I am partnering with an early-stage UK tech startup focused on using data and AI to optimise and accelerate the design of clinical trails.
Senior Back-End Engineer – Founding Team (London, Full-Time)
Role: Senior Back-End Engineer – Founding Team
Location: London, UK (on-site/hybrid)
Type: Full-time, Senior Level
About the Role:
We’re seeking a highly experienced Senior Back-End Engineer to join a fast-growing, deep-tech venture at an early stage. As a key member of the founding engineering team, you will shape and build the core server-side architecture that underpins our next-generation platform.
You’ll work closely with product and engineering leadership to design, implement, and scale reliable backend services, APIs, and systems — helping to turn cutting-edge ideas into real-world products.
What You’ll Do
* Lead the design, development, and maintenance of scalable, secure, and high-performance backend services and APIs.
* Collaborate across the engineering team — including frontend, product, and QA — to architect solutions that address business needs and technical challenges.
* Drive the full development lifecycle: requirements, design, implementation, testing, deployment, and support.
* Improve and optimise existing systems for performance, reliability, and maintainability.
* Conduct code reviews, provide technical leadership, and mentor junior engineers to uphold best practices.
* Identify and address security, performance, and scaling bottlenecks.
What We’re Looking For
* 4+ years of hands-on experience building backend systems in a production environment.
* Strong experience with backend languages and frameworks (e.g., Java, Spring, Python, Go, Node.js — adaptable to your stack).
* Proven track record designing and implementing RESTful APIs and microservices.
* Solid understanding of databases (SQL and NoSQL) and effective data modeling.
* Familiarity with cloud platforms (AWS, GCP, Azure) and CI/CD pipelines.
* Experience with performance optimisation, security best practices, and scalable architectures.
* Excellent communication skills and ability to work effectively in an agile, cross-functional team.
Nice-to-Have
* Experience with distributed systems and asynchronous architectures.
* Knowledge of observability tools, testing frameworks, and containerisation (Docker, Kubernetes).
* Previous involvement in early-stage or founding engineering teams.
Why Join?
* Play a pivotal role in shaping a product from the ground up
* Influence technical direction and engineering culture
* Work in a collaborative, fast-paced environment where your impact is visible
* Competitive compensation and growth opportunities
Following your application Jay Robins, a specialist AI Recruitment consultant will discuss the opportunity with you in detail. He will be more than happy to answer any questions relating to the industry and the potential for your career growth. The conversation can also progress further to discussing other opportunities, which are also available right now or will be imminently becoming available. This position has been highly popular, and it is likely that it will close prematurely. We recommend applying as soon as possible to avoid disappointment.
Please click ‘apply’ or contact Jay Robins for any further information.
Email: jrobins@barringtonjames.com