Senior Backend Engineer in City of London

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Job Description
A fantastic opportunity for a suitably experienced Senior Backend Engineer seeking a role where they can make a real difference. You will help define how AI is safely used in front line healthcare.
Our client has closed a $12million Series A fundraise and they're now hiring their second back end engineer to work alongside their extremely experienced Head of Backend and VP of engineering as well as closing working with a team of doctors helping build the next of AI powered clinical knowledge tools
As a Senior Backend Engineer, you’ll play a key role in building and scaling the core infrastructure that powers our clients platform. This is a hands-on role requiring deep experience in backend engineering, cloud systems, and architectural thinking.
Senior Backend Engineer
Location: London - Hybrid
Salary: £80,000 - £110,00 + Stock Options + Benefits
Tech Stack
Cloud- platform. Experience with the following will be highly desirable:
AWS – Lambda, API Gateway, Cognito, S3 and OpenSearch Node.js / TypeScript and Python DynamoDB and PostgreSQL Serverless Architecture and microservices patterns. Infrastructure tools like Terraform, Docker, and CI/CD pipelines. Security and compliance practices, especially relevant in healthcare.
Responsibilities:
Design and build robust, scalable cloud-first backend systems. Contribute to infrastructure-as-code practices and DevOps tooling. Build and maintain LLM-powered features such as RAG pipelines for clinical information. Develop and optimise agentic document extraction workflows to process clinical PDFs, policies, and handbooks into structured formats. Collaborate closely with our product and frontend teams to deliver high-impact features. Write clean, well-tested code and guide best practices across the engineering team. Take ownership of system reliability, performance, and security in a healthcare context.
Key Skills:
5+ years of backend engineering experience in production environments. Strong AWS proficiency - hands-on experience building and deploying systems in the cloud. Familiarity with embedding models, chunking strategies, and semantic search. Experience working in a small team or startup environment. A pragmatic problem-solver who balances speed with sustainability. Passion for writing maintainable, scalable code. Knowledge of security and compliance best practices (e.g. HIPAA/GDPR, NHS DTAC, SOC 2). Bonus: experience in healthcare, medtech, or regulated environments.
If you are interested in applying for this job please press the Apply Button and follow the application process. Energy Jobline wishes you the very best of luck in your next career move.
Apply
Location:
City Of London
Job Type:
FullTime
Category:
Engineer, Senior, Engineering

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