Research Engineer

Location: London About Neo4j: Neo4j is the graph intelligence platform that transforms data into knowledge to power the next generation of intelligent applications and AI systems. It includes enterprise-ready knowledge graphs for accurate, explainable, and governed AI; the most comprehensive, trusted, and easy-to-deploy graph capabilities across any environment and data source; and an unmatched ecosystem trusted by 84 of the Fortune 100 and supported by the world’s largest graph community. Intelligence that works. Results that matter. Built to work everywhere and integrate with everything across every cloud for dynamic, personalized, and autonomous AI systems. We deliver quicker results, contextual knowledge, and solutions that impact customers and employees across the business. Our Vision: At Neo4j, we have always strived to help the world make sense of data. As business, society and knowledge become increasingly connected, our technology promotes innovation by helping organizations to find and understand data relationships. We created, drive and lead the graph database category, and we’re disrupting how organizations leverage their data to innovate and stay competitive. The Team: Our mission in Neo4j Research is to create technology options through research so that our product engineering teams can continue to lead the market. We are computer scientists who enjoy building the technologies that will underpin our future graph intelligence platform. We are ambitious system builders who relish the challenge of trying new things, of upending orthodoxy, and we like to have some fun along the way. The Aurendil project embodies all of these: a new kind of database runtime that allows us to try new ways of executing queries on cloud hardware, that forges its own path parallel to, but separate from, the 40 years of relational database orthodoxy, and a team with an easy camaraderie. The Role: We are expanding our UK-based team with talented post-doctoral researchers to take on the responsibility of realizing the Aurendil vision to build the next-generation of graph databases. The goal of the Aurendil project is to construct a radical new query language runtime for graph databases inspired by advances in programming language technologies. As such, we are building a cross-disciplinary team of post-doctoral researchers to design and implement the Aurendil prototype from the ground up. Post-doctoral researchers joining the team will participate in the end-to-end development of a completely new database system architecture – from theoretical underpinnings, through to implementation and evaluation – and the dissemination of results to Neo4j product teams and the academic research community. We are especially interested to hear from candidates with backgrounds in systems research – such as query languages, databases, compilers, parallel computing, distributed systems, or and hardware acceleration. The ideal candidates will have experience in one of these fields: Query Language(s) and their implementation Programming Language(s) and their implementation Compiler construction and code generation – LLVM, x86, or ARM Managed Runtimes and Virtual Machines – JVM or GraalVM Database internals Parallel Computing Distributed Computing Hardware Acceleration – GPGPUs, FPGAs, or Smart NICs As this is a Research role, the ideal candidate will have experience working in an academic or industrial research environment and bring a robust understanding of research practice. A strong background in designing and developing complex systems using languages like C++, Java, or Rust would be beneficial. The role is based in London, UK and requires significant in-office presence. Neo4j can provide visa support for exceptional international applications. Why Join Neo4j? Neo4j is, without question, the most popular graph intelligence platform in the world. We have customers in every industry globally, and our products are a proven product/market fit. Joining our team is an opportunity to shape the future of data and analytics. Below are just a few exciting facts about Neo4j. Neo4j is one of the fastest-scaling technology companies in this industry. It recently surpassed $200M in annual recurring revenue (ARR), doubling its ARR over the past three years. Raised the biggest funding round in database history ($325M Series F). Backed by world-class investors like Eurazeo, GV (formerly Google Ventures), and Inovia Capital, Neo4j has raised over $600M in funding and is currently valued at over $2Bn. This puts Neo4j among the most well-funded database companies in history. 84% of the Fortune 100 and 58% of the Fortune 500 use Neo4j. Examples include Boston Scientific , BT Group , Caterpillar , Cisco , Comcast , Department for Education UK , eBay , NBC News , Novo Nordisk , Worldline , and others . Co-founder and CEO Emil Eifrem has built an amazing culture that prides itself on relationships, inclusiveness, innovation, and customer success. Countless industry awards . Massive enterprises and individual developers/data scientists love Neo4j. A strong sense of community and ecosystem is built around the platform. A recent Forrester Total Economic Impact™ Study cited Neo4j as delivering 417% ROI to customers. Research shows that members of underrepresented communities are less likely to apply for jobs when they don’t meet all the qualifications. If this is part of the reason you hesitate to apply, we’d encourage you to reconsider and give us the opportunity to review your application. At Neo4j, we are committed to building awareness and helping to improve these issues. One of our central objectives is to provide an inclusive, diverse, and equitable workplace for everyone to develop their potential and have a positive, career-defining experience. We look forward to receiving your application. Neo4j Values: Neo4j is a Silicon Valley company with a Swedish soul. We foster collaboration and each of us is empowered to contribute and put our innovative stamp on projects. We hire candidates who reflect the following Neo4j core values: (we)-[:VALUE]->(relationships) (we)-[:FOCUS_ON]->(userSuccess) (we)-[:THRIVE_IN]->(:Culture {type: [‘Open’, ‘Inclusive’]}) (we)-[:ASSUME]->(:Intent {direction:’Positive’}) (we)-[:WELCOME]->(:Discussions {nature: ‘IntellectuallyHonest’}) (we)-[:DELIVER_ON]->(ourCommitments) Neo4j is committed to protecting and respecting your privacy. Please read the privacy notice regarding Neo4j's recruitment process to understand how we will handle the personal data that you provide. More information at www.neo4j.com . ©2026 Neo4j, Inc., Neo Technology®, Neo4j®, Cypher®, Neo4j Bloom™, Neo4j Graph Data Science Library™, Neo4j® Aura™, and Neo4j® AuraDB™ are registered trademarks or a trademark of Neo4j, Inc. All other marks are owned by their respective companies.