Senior Frontend Developer

Location: Limassol, Cyprus Workplace: on-site Mayflower is a technology company building highload products used by millions of people worldwide. Operating at the scale of one of the world's top-50 websites, we solve complex engineering challenges and create solutions that power real-time entertainment for a global audience. We’re hiring a Senior Frontend developer into two teams: the Product team, focused on building new features and improving user experience, and the Technical team, responsible for system architecture, performance, scalability, and fault tolerance. You’ll join one of these teams depending on your strengths and interests. Job Responsibilities Design and implement new functionality for the website and core applications, including performance optimization and enhancement of existing features. Continuously improve code quality by refactoring legacy code, resolving performance bottlenecks, and aligning the codebase with modern standards and best practices. Participate in the design and implementation of scalable and efficient architectural solutions, including modularization of the codebase and development of fault-tolerant systems for high-load environments. Write and maintain unit and integration tests, support ongoing maintenance of existing features, and ensure stability across deployments. Identify and resolve security vulnerabilities; support the integration and migration to new API interfaces. Research and evaluate new technologies for possible integration; maintain and update shared libraries to align with evolving technical standards. You’ll thrive here if you have 7+ years of experience and knowledge of JavaScript: React.js , Vanilla JS, Event Loop, Scope, Context, Prototype, Server-side render, Isomorphic Application; Proficiency in HTML5, CSS, Post & Pre Processing CSS; Experience in creating Single Page Applications on React/Preact/Hyperapp and TypeScript; Understanding of the principles and operation of AJAX, WebSockets, CORS security policies; Experience with Redux, ES2020, Node.js , Sass; Understanding of modular development principles, Micro Frontends; Skills and experience in unit testing of functionality and business logic; Skills and experience in profiling, debugging, and optimization (client/server side); Experience with application build systems webpack, rollup, including esbuild, babel; Technical English (tasks and documentation are in English). Conditions We know that great talent deserves great conditions, so here's what you can expect when joining us: EU-based employment contract and a 3-year Cyprus work visa with full support for your relocation and visa processes, including assistance for your family. EU passport. Opportunity to obtain an EU passport after 4 years of residence Full relocation package: flights to Limassol for you and your family, a company-covered apartment for the first month, and full relocation support to make your move smooth and hassle-free. Transparent performance reviews twice a year, with bonus opportunities and salary adjustments. Private medical insurance for you and your family Corporate mobile plan (unlimited in Cyprus with roaming included) Mindfulness & well-being support, including psychological assistance with 50% coverage. 50% coverage of school and kindergarten fees for your children. Fully covered sports benefits, and also access to in-house electric scooters and bike rentals Provident fund (Cyprus): a long-term savings plan co-funded by you and the Company together (available after probation) that grows throughout your time with us in Cyprus. Professional growth support: language courses, conferences, training programs, and coaching. Peer recognition program: receive and share kudos for great work. A fully equipped office in Limassol’s city center, with everything you need for deep work and collaboration. Free breakfasts and lunches in the office and an in-house coffee bar with high-quality drinks and a health bar stocked with nutritious snacks. A strong engineering culture: international teams, corporate events, team buildings, and hackathons — because great work happens in great communities. Benefits are provided in accordance with the company's policies and eligibility criteria. Recruitment process HR interview (40 min); Technical interview (1,5 hour); Live-coding (1,5 hour); Final interview with the team; Recommendations check; Job offer.