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Location: Bulgaria, Sofia Our mission Constructor’s mission is to enable all educational organisations to provide high-quality digital education to 10x people with 10x efficiency. With strong expertise in machine intelligence and data science, Constructor’s all-in-one platform for education and research addresses today’s pressing educational challenges: access inequality, tech clutter, and low engagement of students. Please send your resume in English only. As the Senior Technical Product Manager for Platform , you will own the product strategy for the shared services layer that powers Constructor's learning and research applications. You will drive the evolution of Platform capabilities - including identity, data infrastructure, AI/ML services, and developer tools - into a modular foundation. Your work enables internal teams and external partners to build and ship faster while maintaining enterprise-grade security, compliance, and global readiness. Duties and Responsibilities: Define and drive the product vision for a multi-instance, scalable foundation that supports SaaS and on-premise deployments Collaborate with application product teams to consolidate fragmented components and requirements into unified platform services Stay up-to-date with industry developments and technologies to inform Platform strategy Communicate Platform insights and recommendations to stakeholders and the leadership team Act as a point of contact for cross-functional teams and stakeholders Analyse performance data to identify areas for improvement and optimisation Collaborate with the development team to identify and prioritise new features and capabilities Drive a roadmap with dependencies across the wider organisation, balancing technical constraints with business needs Qualifications and experience: 5+ years of experience working as a program or product manager for a platform, SaaS infrastructure, or API products Computer Science or similar degree A strong technical background. You are comfortable discussing API design, architecture, and authentication flows. Excellent analytical and problem-solving skills Strong communication and collaboration skills Experience leading teams and working with cross-functional stakeholders Nice to Have: Experience with developer platforms or platform-as-a-service products Experience managing AI/ML infrastructure or platforms What We Offer 💻 Choice of work equipment (e.g., laptop, monitor, etc.) 🇬🇧 English classes (iTalki – $130 monthly) ⏰ Flexible schedule (we usually work between 09:00/10:00 and 18:00/19:00) 👶 Newborn bonus (€500 per child) 🧠 Patent remuneration 🌴 Paid leave 🧑‍💻 Remote work in locations without our offices Hybrid work in locations with offices (2 days in-office, 3 days remote) Constructor fosters equal opportunity for people of all backgrounds and identities. We are led by a gender-balanced board committed to building a diverse and inclusive organisation where everyone can become their best self. We do not discriminate based on age, disability, gender identity, sexual orientation, ethnicity, race, religion or belief, parental and family status, or other protected characteristics. We welcome applications from women, men and non-binary candidates of all ethnicities and socio-economic backgrounds. We encourage people belonging to underrepresented groups to apply.

Location: Serbia, Belgrade Our mission Constructor’s mission is to enable all educational organisations to provide high-quality digital education to 10x people with 10x efficiency. With strong expertise in machine intelligence and data science, Constructor’s all-in-one platform for education and research addresses today’s pressing educational challenges: access inequality, tech clutter, and low engagement of students. Please send your resume in English only. As the Senior Technical Product Manager for Platform , you will own the product strategy for the shared services layer that powers Constructor's learning and research applications. You will drive the evolution of Platform capabilities - including identity, data infrastructure, AI/ML services, and developer tools - into a modular foundation. Your work enables internal teams and external partners to build and ship faster while maintaining enterprise-grade security, compliance, and global readiness. Duties and Responsibilities: Define and drive the product vision for a multi-instance, scalable foundation that supports SaaS and on-premise deployments Collaborate with application product teams to consolidate fragmented components and requirements into unified platform services Stay up-to-date with industry developments and technologies to inform Platform strategy Communicate Platform insights and recommendations to stakeholders and the leadership team Act as a point of contact for cross-functional teams and stakeholders Analyse performance data to identify areas for improvement and optimisation Collaborate with the development team to identify and prioritise new features and capabilities Drive a roadmap with dependencies across the wider organisation, balancing technical constraints with business needs Qualifications and experience: 5+ years of experience working as a program or product manager for a platform, SaaS infrastructure, or API products Computer Science or similar degree A strong technical background. You are comfortable discussing API design, architecture, and authentication flows. Excellent analytical and problem-solving skills Strong communication and collaboration skills Experience leading teams and working with cross-functional stakeholders Nice to Have: Experience with developer platforms or platform-as-a-service products Experience managing AI/ML infrastructure or platforms What We Offer 💻 Choice of work equipment (e.g., laptop, monitor, etc.) 🇬🇧 English classes (iTalki – $130 monthly) ⏰ Flexible schedule (we usually work between 09:00/10:00 and 18:00/19:00) 👶 Newborn bonus (€500 per child) 🧠 Patent remuneration 🌴 Paid leave 🧑‍💻 Remote work in locations without our offices Hybrid work in locations with offices (2 days in-office, 3 days remote) Constructor fosters equal opportunity for people of all backgrounds and identities. We are led by a gender-balanced board committed to building a diverse and inclusive organisation where everyone can become their best self. We do not discriminate based on age, disability, gender identity, sexual orientation, ethnicity, race, religion or belief, parental and family status, or other protected characteristics. We welcome applications from women, men and non-binary candidates of all ethnicities and socio-economic backgrounds. We encourage people belonging to underrepresented groups to apply.

Location: Germany, Bremen Our mission Constructor’s mission is to enable all educational organisations to provide high-quality digital education to 10x people with 10x efficiency. With strong expertise in machine intelligence and data science, Constructor’s all-in-one platform for education and research addresses today’s pressing educational challenges: access inequality, tech clutter, and low engagement of students. Please send your resume in English only. Interns are NOT eligible for equipment and other benefits as the position is temporary. We are looking for a highly motivated HR Intern to join our team and gain hands-on experience in international human resources. This internship will provide exposure to various HR functions, including recruitment, employee engagement, HR operations, and policy administration. The ideal candidate is eager to learn, detail-oriented, and passionate about people and organizational development. DUTIES & RESPONSIBILITIES: Assist in the recruitment process, including job postings, screening resumes, and scheduling interviews. Support onboarding and orientation programs for new hires. Maintain employee records and update HR databases. Assist in organizing HR events, training sessions, and employee engagement activities. Handle HR administrative tasks such as preparing documents, reports, and presentations. Research HR best practices and assist in policy development. Support payroll, benefits administration, and compliance-related tasks. Respond to employee inquiries and assist in resolving HR-related issues. Other tasks and duties assigned by the manager. QUALIFICATION & EXPERIENCE: Currently pursuing a degree in Human Resources, Business Administration, Psychology, or a related field. Strong communication and interpersonal skills. Basic understanding of HR principles and employment laws is a plus. Proficiency in Microsoft Office (Word, Excel, PowerPoint). Knowledge of HR software/tools will be an advantage. Ability to handle confidential information with professionalism. Strong organizational skills and attention to detail. Self-motivated, eager to learn, initiative and adaptable in a fast-paced environment. What We Offer For Interns: Internship Duration: from 2 months or more Type of internship: 100% remote or hybrid or in the office in Bremen (GER) What We Offer 💻 Choice of work equipment (e.g., laptop, monitor, etc.) 🇬🇧 English classes (iTalki – $130 monthly) ⏰ Flexible schedule (we usually work between 09:00/10:00 and 18:00/19:00) 👶 Newborn bonus (€500 per child) 🧠 Patent remuneration 🌴 Paid leave 🧑‍💻 Remote work in locations without our offices Hybrid work in locations with offices (2 days in-office, 3 days remote) Constructor fosters equal opportunity for people of all backgrounds and identities. We are led by a gender-balanced board committed to building a diverse and inclusive organisation where everyone can become their best self. We do not discriminate based on age, disability, gender identity, sexual orientation, ethnicity, race, religion or belief, parental and family status, or other protected characteristics. We welcome applications from women, men and non-binary candidates of all ethnicities and socio-economic backgrounds. We encourage people belonging to underrepresented groups to apply.

Location: Bremen, Germany Our mission Constructor’s mission is to enable all educational organisations to provide high-quality digital education to 10x people with 10x efficiency. With strong expertise in machine intelligence and data science, Constructor’s all-in-one platform for education and research addresses today’s pressing educational challenges: access inequality, tech clutter, and low engagement of students. Please send your resume in English only. Interns are NOT eligible for equipment and other benefits as the position is temporary. With this internship, the Frontend Engineering Intern will get full integration into the frontend development team, and he will try a full development cycle. Duties & Responsibilities: Collaborate with cross-functional teams to understand and translate project requirements into responsive and engaging user interfaces. Develop and maintain frontend components using modern web technologies such as HTML5, CSS3, and JavaScript (ES6+). Implement efficient and reusable frontend systems and libraries for future use. Optimize web applications for maximum speed and scalability. Conduct thorough testing of frontend code to ensure high quality and performance. Stay updated on the latest trends and best practices in frontend development. Assist in troubleshooting and debugging frontend issues as they arise. Participate in code reviews to provide feedback and maintain code quality standards. Qualifications & Experience: Pursuing a degree in Computer Science, Software Engineering, or a related field. Strong understanding of web fundamentals including HTML, CSS, and JavaScript. Familiarity with frontend frameworks such as React, Vue.js, or Angular. Experience with version control systems, preferably Git. Basic knowledge of web performance optimization techniques. Excellent problem-solving skills and attention to detail. Ability to work effectively in a team environment and communicate technical concepts clearly. Passion for learning and staying updated on emerging technologies. What We Offer For Interns: Internship Duration: from 2 months or more Type of internship: 100% remote or hybrid in the office in Bremen (GER), Sofia (BG), Belgrade (SRB), Istanbul (TR), Sakarya (TR), Singapore (SGD) What We Offer 💻 Choice of work equipment (e.g., laptop, monitor, etc.) 🇬🇧 English classes (iTalki – $130 monthly) ⏰ Flexible schedule (we usually work between 09:00/10:00 and 18:00/19:00) 👶 Newborn bonus (€500 per child) 🧠 Patent remuneration 🌴 Paid leave 🧑‍💻 Remote work in locations without our offices Hybrid work in locations with offices (2 days in-office, 3 days remote) Constructor fosters equal opportunity for people of all backgrounds and identities. We are led by a gender-balanced board committed to building a diverse and inclusive organisation where everyone can become their best self. We do not discriminate based on age, disability, gender identity, sexual orientation, ethnicity, race, religion or belief, parental and family status, or other protected characteristics. We welcome applications from women, men and non-binary candidates of all ethnicities and socio-economic backgrounds. We encourage people belonging to underrepresented groups to apply.

Location: Bremen, Germany Our mission Constructor’s mission is to enable all educational organisations to provide high-quality digital education to 10x people with 10x efficiency. With strong expertise in machine intelligence and data science, Constructor’s all-in-one platform for education and research addresses today’s pressing educational challenges: access inequality, tech clutter, and low engagement of students. Please send your resume in English only. Interns are NOT eligible for equipment and other benefits as the position is temporary. About the Role We’re seeking a motivated Computer Science student to join our backend engineering team as a C# Backend Developer Intern . This is an excellent opportunity to learn backend development while working on real-world educational platforms that support learners, educators, and institutions worldwide. Interns are NOT eligible for equipment and other benefits as the position is temporary. What You’ll Learn & Do: Learn backend development using C# and .NET Contribute to real backend services used in production Assist in developing and maintaining REST APIs Work with databases and learn how data is modelled and accessed Participate in code reviews and learn clean coding best practices Collaborate with frontend, QA, and product teams Contribute to backend services supporting learning platform functionality and various integrations Gain exposure to the full software development lifecycle Required Qualifications: Current Computer Science / Software Engineering student Experience with at least one programming language (C#, Java, Python, JavaScript, C++, or similar) Basic understanding of object-oriented programming concepts Interest in backend development and distributed systems Good problem-solving skills and attention to detail Ability to work collaboratively in a team environment Eagerness to learn and grow as a software engineer Good to Have (but not required): Basic knowledge of C# and .NET Familiarity with RESTful APIs Introductory understanding of databases ( SQL or NoSQL) Experience using Git or other version control systems Basic knowledge of HTTP, JSON, and web concepts Interest in educational technology (EdTech) What We’ll Teach You: C# and modern .NET backend development Designing and implementing REST APIs Working with databases and data access layers Clean code and basic backend architecture principles Debugging, testing, and performance basics Collaboration in an Agile engineering environment How production backend systems are built and maintained Technology Stack You’ll Work With: Programming: C#, .NET 9.0 Backend: ASP.NET Core Messaging & Events: Apache Kafka Databases: PostgreSQL Tools: Git, CI/CD pipelines, logging & monitoring tools Testing: Unit and integration testing Learning Opportunities: Mentorship from experienced backend developers Exposure to scalable backend architectures Hands-on experience with real production systems Understanding how backend services support large platforms Contribution to products used by students and educators globally What We Offer For Interns: Internship Duration: from 2 months or more Type of internship: 100% remote or hybrid in the office in Bremen (GER), Sofia (BG), Belgrade (SRB), Istanbul (TR), Sakarya (TR), Singapore (SGD) What We Offer 💻 Choice of work equipment (e.g., laptop, monitor, etc.) 🇬🇧 English classes (iTalki – $130 monthly) ⏰ Flexible schedule (we usually work between 09:00/10:00 and 18:00/19:00) 👶 Newborn bonus (€500 per child) 🧠 Patent remuneration 🌴 Paid leave 🧑‍💻 Remote work in locations without our offices Hybrid work in locations with offices (2 days in-office, 3 days remote) Constructor fosters equal opportunity for people of all backgrounds and identities. We are led by a gender-balanced board committed to building a diverse and inclusive organisation where everyone can become their best self. We do not discriminate based on age, disability, gender identity, sexual orientation, ethnicity, race, religion or belief, parental and family status, or other protected characteristics. We welcome applications from women, men and non-binary candidates of all ethnicities and socio-economic backgrounds. We encourage people belonging to underrepresented groups to apply.

Location: Istanbul, Turkey Our mission Constructor’s mission is to enable all educational organisations to provide high-quality digital education to 10x people with 10x efficiency. With strong expertise in machine intelligence and data science, Constructor’s all-in-one platform for education and research addresses today’s pressing educational challenges: access inequality, tech clutter, and low engagement of students. Please send your resume in English only. We are looking for a high-impact Business Manager ( President for Türkiye & the Balkans) to work in close partnership with, directly shadowing and supporting the President for Türkiye & the Balkans. This position combines Executive Assistant responsibilities with hands-on business execution and commercial support. The Business Manager will closely follow the President’s daily agenda, priorities, and decision flow — acting as an extension of the President in execution, coordination, and follow-through. Office address: Harmancı Giz Plaza, Levent Esentepe, Harman Sk. No:5, 12th Floor 34394 Şişli / Istanbul Duties and Responsibilities: President Shadowing & Executive Support Work in close alignment with the President, following daily priorities, meetings, and decision-making Manage and optimize the President’s calendar, meetings, and travel schedule Coordinate meeting preparation, agendas, materials, and follow-ups Track action items and ensure execution after executive meetings Act as a gatekeeper and organizer for the President’s time and focus Business Execution & Strategy Support Actively support the execution of the Türkiye & Balkans strategy alongside the President Track strategic initiatives, execution plans, and regional targets Ensure follow-up on Sales, Customer Success, Strategic Partnerships, and GTM priorities Support cross-functional coordination to keep execution on track Commercial & Sales Exposure Support sales and pipeline tracking, opportunity follow-ups, and partner coordination Assist with the preparation of commercial reviews, dashboards, and reports Gain hands-on exposure to regional commercial execution and deal flow Presentations & Executive Communication Prepare executive-level presentations, board-style decks, and briefing documents Support the President in presentation preparation and delivery Ensure high-quality storytelling, structure, and clarity in all materials Team & Stakeholder Coordination Support leadership and team meeting cadence Coordinate internal and external stakeholders across Türkiye and the Balkans Act as a communication bridge between the President and the teams Qualifications and Experience: Fluent in English (written and spoken) Previous experience in sales, business development, or commercial roles Proven experience in executive support, business management, or similar hybrid roles Strong presentation preparation and presentation delivery skills Experience working closely with senior executives Excellent organisational, planning, and prioritisation skills Ability to manage complex schedules and multiple stakeholders High level of confidentiality, ownership, and accountability Profile We Are Looking For Comfortable operating in a hybrid Executive Assistant and Business Manager role Able to think strategically while executing operationally Proactive, structured, and detail-oriented Strong follow-through and execution discipline Interested in long-term growth into senior business leadership roles Why This Role? Direct exposure to regional leadership and strategic decision-making Opportunity to work side-by-side with the President Hands-on involvement in strategy execution across Türkiye and the Balkans Clear development path into broader business or leadership roles What We Offer 💻 Choice of work equipment (e.g., laptop, monitor, etc.) 🇬🇧 English classes (iTalki – $130 monthly) ⏰ Flexible schedule (we usually work between 09:00/10:00 and 18:00/19:00) 👶 Newborn bonus (€500 per child) 🧠 Patent remuneration 🌴 Paid leave 🧑‍💻 Remote work in locations without our offices Hybrid work in locations with offices (2 days in-office, 3 days remote) Constructor fosters equal opportunity for people of all backgrounds and identities. We are led by a gender-balanced board committed to building a diverse and inclusive organisation where everyone can become their best self. We do not discriminate based on age, disability, gender identity, sexual orientation, ethnicity, race, religion or belief, parental and family status, or other protected characteristics. We welcome applications from women, men and non-binary candidates of all ethnicities and socio-economic backgrounds. We encourage people belonging to underrepresented groups to apply.

Location: Bremen, Germany About the position You are expected to contribute to the development of internationally visible, foundational research in AI-driven semantic structure extraction, automated reasoning-flow modeling, and adaptive content generation. The research focuses on methods for analyzing and representing deep semantic and pedagogical structures in scientific and educational materials; high-fidelity extraction of conceptual and reasoning blocks; inference-time rationale generation; and adaptive, learner-aware sequencing of content. This includes work on semantic parsing, structured NLP, graph-based neural models, metacognitive prompting, ontology alignment across disciplines, and human-in-the-loop optimization. In this context, interdisciplinary research is strongly encouraged—particularly collaborations spanning computer science, computational linguistics, cognitive science, and the learning sciences. You will contribute to developing datasets, baseline models, personalized learning engines, reasoning-graph representations, cross-domain mapping algorithms, and RLHF-style feedback loops that improve system interpretability and instructional quality. The successful candidate will also contribute to high-quality publications, release research prototypes, and support demonstrator systems that deliver structured semantic extraction, rationale-aware content generation, and cross-domain transfer of reasoning structures. Additionally, the successful candidate is expected to support teaching activities in areas such as Machine Learning, Natural Language Processing, AI in Education, Knowledge Representation, and Python-based analytical seminars at the BSc, MSc, and PhD levels. Responsibilities include assisting in course delivery, advising students, supervising Bachelor/Master theses, and engaging in methodological innovation for online, hybrid, and in-person learning environments. The university provides strong support for early-career researchers, including mentorship, administrative assistance, access to computational resources, conference funding, and opportunities to collaborate with other research groups and industrial partners working at the intersection of AI and digital education. Mandatory requirements Master’s or PhD degree in Computer Science, Artificial Intelligence, Machine Learning, Computational Linguistics, or a related field. Strong research interest and practical experience in one or more of the following areas: semantic parsing and structured representation learning knowledge graphs or graph-based reasoning transformer models, sequence modeling, or GNNs natural language generation and explainability educational AI, personalization algorithms, or cognitive modeling Evidence of research potential through publications, a strong thesis, or significant projects. Experience or interest in innovative teaching and learning approaches. Ability to translate theoretical insights into engineered prototypes and systems supporting scientific or educational use cases. Responsible, self-motivated, and capable of working independently as well as collaboratively. Excellent verbal and written communication skills. Intercultural competence and experience in international environments. Fluency with co-pilot tools for coding and writing. Fluency in English, the language of instruction and communication on campus. Funding & Appointment Terms The appointment provides full financial coverage through a dedicated fellowship, comprising: Monthly stipend of €1,650 Monthly research-cost allowance of €100 (Forschungskostenpauschale) Health-insurance subsidy of €100 per month Supplementary €550 mini-job allowance to support parallel part-time employment (optional) Application Details Expected start date: September , 2026 Application package must include: Curriculum Vitae (CV); Academic transcripts ; A detailed letter of motivation outlining research interests and career goals; 2 recommendation letters; Applications to be reviewed on a rolling basis. Shortlisted candidates will be invited to interviews.

Location: Bremen, Germany About the position You are expected to conduct and lead internationally competitive research in AI-driven semantic analysis and automated reasoning-flow modeling, with applications to educational materials, scientific documents, and research authoring. Your work will focus on developing advanced methods for semantic structure extraction, conceptual and argumentative flow reconstruction, rationale-aware content generation, metacognitive prompting, and adaptive personalization. Core research contributions will include designing algorithms for concept and structure extraction, building neural/graph hybrid models for pedagogical reasoning, implementing ontology-alignment methods for cross-domain transfer, and creating human-in-the-loop optimization pipelines that incorporate expert feedback—aligning with the multi-year research roadmap (WP1–WP3) . As a postdoctoral researcher, you will take a leading role in designing experiments, shaping research directions, supervising junior researchers (including PhD students), and contributing to the development of end-to-end demonstrator systems capable of generating structured, rationale-rich, and learner-adaptive content. You will be responsible for coordinating data annotation efforts, overseeing the construction of evaluation frameworks, and driving publication-quality research outputs, including survey papers, methodology papers, and cross-domain transfer studies. Interdisciplinary collaboration is strongly encouraged, especially at the intersection of computer science, computational linguistics, cognitive science, and learning technologies, and you will have opportunities to initiate or co-lead joint projects with internal and external partners. The postdoctoral researcher will also contribute to teaching in areas such as Machine Learning, NLP, AI for Education, Explainable AI, and Python-based applied seminars, supporting course development and supervising Bachelor’s, Master’s, and PhD theses. The university provides a supportive academic environment—including mentoring, administrative support, computational resources, and opportunities for technology transfer and industry engagement—enabling the postdoctoral researcher to establish or strengthen an internationally visible research profile. Mandatory requirements PhD degree in Computer Science, Artificial Intelligence, Machine Learning, Computational Linguistics, or a closely related field. Strong publication record in relevant top-tier venues (e.g., NeurIPS, ACL, ICML, ICLR, AIED, LAK, AAAI). Demonstrated expertise in at least two of the following areas: semantic parsing or structured NLP knowledge representation, reasoning graphs, or GNNs natural language generation, explainability, or rationale modeling ontology alignment, cross-domain transfer, or representation learning personalization algorithms, metacognition, or educational AI human-in-the-loop systems or RLHF Experience in leading research tasks, mentoring junior researchers, and coordinating multi-stage projects. Fluency in Python and modern deep learning frameworks (PyTorch/TensorFlow). Strong analytical, communication, and academic writing skills. Demonstrable ability to design rigorous experimental pipelines and validation methodologies. Responsible, independent, and proactive research personality with strong teamwork skills. Intercultural experience and readiness to work in an international research environment. Fluency with AI co-pilot assistants for coding and writing. Fluency in English, the primary language of research and instruction on campus. Preferred qualifications: Experience in developing research prototypes, evaluation benchmarks, or large-scale datasets. Prior involvement in interdisciplinary or applied research projects. Potential to contribute to competitive funding applications. Experience with open-source releases or reproducible research pipelines. Application Details Starting date: September , 2026 Contract: Full-time (100%), TV-L E13 Work mode: Hybrid Application package must include: Curriculum Vitae (CV); A detailed letter of motivation outlining research interests and career goals; 2 recommendation letters; Applications to be reviewed on a rolling basis. Shortlisted candidates will be invited to interviews.

Location: Bremen, Germany Our mission Constructor’s mission is to enable all educational organisations to provide high-quality digital education to 10x people with 10x efficiency. With strong expertise in machine intelligence and data science, Constructor’s all-in-one platform for education and research addresses today’s pressing educational challenges: access inequality, tech clutter, and low engagement of students. Please send your resume in English only. Interns are NOT eligible for equipment and other benefits as the position is temporary. The QA Intern at Constructor Tech will be responsible for executing manual test cases, identifying bugs, and ensuring software quality. This role involves assisting in the planning, designing, and execution of tests, documenting results, and supporting troubleshooting throughout the Testing Development Life Cycle. The intern will collaborate with QA, engineering, and product teams to enhance testing processes and contribute to software reliability. Job Description The QA Intern at Constructor Tech will support the quality assurance activities across our products by executing manual tests, validating new features, and helping ensure a high-quality user experience. This is an entry-level role designed to provide hands-on experience with real-world QA processes, tools, and collaboration within cross-functional teams. The intern will work closely with QA engineers, developers, and product managers throughout the software development lifecycle. Responsibilities Execute manual test cases for web and API-based applications Validate new features, bug fixes, and regression scenarios before releases Identify, document, and track defects clearly and accurately Participate in requirement reviews and help identify test scenarios early Support different testing phases: functional, regression, smoke, and exploratory testing Verify fixes and ensure issues are resolved as expected Assist in maintaining and improving test documentation and test case coverage Collaborate closely with developers, product managers, and senior QA engineers Learn and apply QA best practices, tools, and processes under mentorship Requirements Currently pursuing or recently completed a degree in IT, Computer Science, or a related field Basic understanding of the software development life cycle (SDLC) Interest in software quality, testing methodologies, and attention to detail Ability to analyze requirements and think from an end-user perspective Basic understanding of web applications and how they work (browser, APIs, etc.) Familiarity with bug tracking or test management tools is a plus Strong analytical and problem-solving skills Willingness to learn, proactive attitude, and ability to follow guidance Good communication skills and fluency in English Nice to Have Understanding of Agile / Scrum development processes Basic knowledge of SQL or databases Familiarity with REST APIs and tools like Postman Experience with exploratory testing or usability testing Exposure to version control systems (e.g., Git) Experience working on team or university projects What We Offer For Interns: Internship Duration: from 2 months or more Type of internship: 100% remote or hybrid in the office in Bremen (GER), Sofia (BG), Belgrade (SRB), Istanbul (TR), Sakarya (TR), Singapore (SGD) What We Offer 💻 Choice of work equipment (e.g., laptop, monitor, etc.) 🇬🇧 English classes (iTalki – $130 monthly) ⏰ Flexible schedule (we usually work between 09:00/10:00 and 18:00/19:00) 👶 Newborn bonus (€500 per child) 🧠 Patent remuneration 🌴 Paid leave 🧑‍💻 Remote work in locations without our offices Hybrid work in locations with offices (2 days in-office, 3 days remote) Constructor fosters equal opportunity for people of all backgrounds and identities. We are led by a gender-balanced board committed to building a diverse and inclusive organisation where everyone can become their best self. We do not discriminate based on age, disability, gender identity, sexual orientation, ethnicity, race, religion or belief, parental and family status, or other protected characteristics. We welcome applications from women, men and non-binary candidates of all ethnicities and socio-economic backgrounds. We encourage people belonging to underrepresented groups to apply.

Location: Bremen, Germany Our mission Constructor’s mission is to enable all educational organisations to provide high-quality digital education to 10x people with 10x efficiency. With strong expertise in machine intelligence and data science, Constructor’s all-in-one platform for education and research addresses today’s pressing educational challenges: access inequality, tech clutter, and low engagement of students. Please send your resume in English only. Interns are NOT eligible for equipment and other benefits as the position is temporary. The Reality The frontier models are converging into commodities; the engine is no longer the differentiator. The scarcity in 2026 is not the model. We are not looking for people to fine-tune Llama on toy datasets or write "better prompts." We are building the runtime systems that turn probabilistic token generation into reliable workers that finish 50-step tasks without spiraling. We are solving the math of multi-step reliability through engineering, not wishful thinking. What You Will Solve You will work on the Agentic Harness , treating the LLM as a component within a larger, deterministic control system. Your research will focus on: Architecting loops that survive error accumulation. You will build verification layers that force the agent to recognize its own hallucinations and self-correct. You will implement systems where the agent compiles its own constraints and the harness enforces them via constrained decoding or external execution. You will optimise KV-cache hit rates and design "restorable compression" strategies to prevent attention decay. Who We Are Looking For We are looking for systems thinkers who happen to know ML, not the other way around. You know that a demo is not a product. You are interested in the "boring" engineering: state machines, retries, idempotency, serialisation — that actually makes agents work. You are comfortable working with the raw output of the model and building robust software in Python or Rust around it. You understand why dynamic tool loading destroys inference economics. You prefer deterministic guardrails over "prompting it to be nicer." You are willing to read a 500-line trace of a failed agent loop to find the exact moment the context drifted. You care about the "last mile" of reliability. What We Offer For Interns: Internship Duration: from 2 months or more Type of internship: 100% remote or hybrid in the office in Bremen (GER), Sofia (BG), Belgrade (SRB), Istanbul (TR), Sakarya (TR), Singapore (SGD) What We Offer 💻 Choice of work equipment (e.g., laptop, monitor, etc.) 🇬🇧 English classes (iTalki – $130 monthly) ⏰ Flexible schedule (we usually work between 09:00/10:00 and 18:00/19:00) 👶 Newborn bonus (€500 per child) 🧠 Patent remuneration 🌴 Paid leave 🧑‍💻 Remote work in locations without our offices Hybrid work in locations with offices (2 days in-office, 3 days remote) Constructor fosters equal opportunity for people of all backgrounds and identities. We are led by a gender-balanced board committed to building a diverse and inclusive organisation where everyone can become their best self. We do not discriminate based on age, disability, gender identity, sexual orientation, ethnicity, race, religion or belief, parental and family status, or other protected characteristics. We welcome applications from women, men and non-binary candidates of all ethnicities and socio-economic backgrounds. We encourage people belonging to underrepresented groups to apply.

Location: Bremen, Germany Our mission Constructor’s mission is to enable all educational organisations to provide high-quality digital education to 10x people with 10x efficiency. With strong expertise in machine intelligence and data science, Constructor’s all-in-one platform for education and research addresses today’s pressing educational challenges: access inequality, tech clutter, and low engagement of students. Please send your resume in English only. Interns are NOT eligible for equipment and other benefits as the position is temporary. Internship Opportunity at the Research Unit of Constructor Technology in Partnership with the Observatory of Higher Education Innovations at Constructor University Overview: The Research Unit of Constructor Technology in Partnership with the Observatory of Higher Education Innovations at Constructor University is looking for a motivated student intern who is passionate about educational technologies and their applications. The ideal candidate is a second or third-year student with a strong interest in research, data analysis, and the EdTech industry. This internship offers valuable learning opportunities, mentorship, and hands-on experience in a dynamic field. Key Responsibilities: Assist in analyzing existing EdTech solutions, including platform and infrastructure software, as well as products aimed at end-users such as students, teachers, and administrative staff. Help investigate and assess the latest trends and innovations in the application of artificial intelligence in education. Collaborate with team members and researchers to explore tools that enhance productivity and optimize routine tasks. Proactively participate in a weekly work-group seminar where we discuss findings. Support the market analysis efforts, including studying economic indicators and trends to identify potential opportunities for the company's development in the EdTech sector. Participate in external EdTech and education-related activities and share insights with the entire team. Requirements: Currently enrolled in a second or third year of a bachelor's program in information technology, economics, or a related field. Basic understanding of market research and data analysis, with coursework or projects in a related area. Strong analytical skills, with the ability to work with information and learn to make informed decisions. Good communication skills and the ability to work effectively within a team. Enthusiasm for learning and contributing to the field of educational technology. What Constructor Technology Offers: A position in a leading company in the EdTech field, actively using innovations to transform education. Hands-on experience and learning opportunities in market analysis and data-driven decision-making. Flexible working hours with an expected duration of 6 months, with the possibility of extension based on performance and company needs. If you are a student with a passion for data, analytics, and educational innovations, we look forward to having you on our team! What We Offer 💻 Choice of work equipment (e.g., laptop, monitor, etc.) 🇬🇧 English classes (iTalki – $130 monthly) ⏰ Flexible schedule (we usually work between 09:00/10:00 and 18:00/19:00) 👶 Newborn bonus (€500 per child) 🧠 Patent remuneration 🌴 Paid leave 🧑‍💻 Remote work in locations without our offices Hybrid work in locations with offices (2 days in-office, 3 days remote) Constructor fosters equal opportunity for people of all backgrounds and identities. We are led by a gender-balanced board committed to building a diverse and inclusive organisation where everyone can become their best self. We do not discriminate based on age, disability, gender identity, sexual orientation, ethnicity, race, religion or belief, parental and family status, or other protected characteristics. We welcome applications from women, men and non-binary candidates of all ethnicities and socio-economic backgrounds. We encourage people belonging to underrepresented groups to apply.

Location: Serbia Our mission Constructor’s mission is to enable all educational organisations to provide high-quality digital education to 10x people with 10x efficiency. With strong expertise in machine intelligence and data science, Constructor’s all-in-one platform for education and research addresses today’s pressing educational challenges: access inequality, tech clutter, and low engagement of students. Please send your resume in English only. Duties and Responsibilities: Strategic Roadmap Ownership: Define and drive a multi-year, outcome-based roadmap that aligns with global business goals and North Star metrics. Market Intelligence: Lead comprehensive market research to identify emerging trends in AI and EdTech, ensuring our product strategy remains ahead of the curve. Monetization & Pricing: Own the pricing strategy for international markets. Conduct analysis to determine price floors and ceilings, and optimize monetization models to maximize LTV. Scientific & Data Leadership: Apply a scientific approach to product discovery. Analyze performance data to validate hypotheses and drive data-informed decision-making across the organization. Stakeholder Management: Act as a key partner for the Leadership Team, delivering clear, data-backed insights and recommendations that influence company-wide strategy. Team Mentorship: Lead, mentor, and scale a team of product managers, fostering a culture of accountability, growth, and high-quality PRD standards. Cross-functional Collaboration: Serve as the primary point of contact for Engineering, Data Science, and Design teams to prioritize features and resolve technical/business trade-offs. Qualifications and Experience: 5+ years of experience as a Product Manager in software development (SaaS, EdTech, or AI-driven products). Bachelor’s or Master’s degree in Computer Science, Data Science, or a related technical/scientific field. Proven ability to manage products using complex data analysis and scientific research methodologies. Expert knowledge of prioritization frameworks (e.g., RICE, WSJF) and experience building outcome-driven (not just feature-driven) roadmaps. Strong track record of writing high-quality PRDs and managing sprints in a fast-paced, agile environment. Experience leading cross-functional stakeholders and directly mentoring other product managers. Fluent English with the ability to articulate technical concepts to non-technical stakeholders clearly. Nice to Have: Academic background in Business (MBA/BBA) or completion of advanced product strategy programs (e.g., Reforge, Kellogg, or similar). Experience in building and scaling AI/ML-powered products . Background in Science or experience with academic/research-focused software. Experience managing products with millions of users across multiple geographical regions. What We Offer 💻 Choice of work equipment (e.g., laptop, monitor, etc.) 🇬🇧 English classes (iTalki – $130 monthly) ⏰ Flexible schedule (we usually work between 09:00/10:00 and 18:00/19:00) 👶 Newborn bonus (€500 per child) 🧠 Patent remuneration 🌴 Paid leave 🧑‍💻 Remote work in locations without our offices Hybrid work in locations with offices (2 days in-office, 3 days remote) Constructor fosters equal opportunity for people of all backgrounds and identities. We are led by a gender-balanced board committed to building a diverse and inclusive organisation where everyone can become their best self. We do not discriminate based on age, disability, gender identity, sexual orientation, ethnicity, race, religion or belief, parental and family status, or other protected characteristics. We welcome applications from women, men and non-binary candidates of all ethnicities and socio-economic backgrounds. We encourage people belonging to underrepresented groups to apply.