51 to 62 of 62 FastAPI Jobs in London

Engineer (Python, FastAPI/Django/Flask, Agentic AI Systems, LLM's, ML, Cloud Tech) London/Hybrid Remote Working (2 days per week) £40,000 - £65,000 D.O.E & Plus Benefits We are working with an established & growing global technology driven business who are looking for their latest star developer … delivery. You will be: An expert in Machine Learning concepts & LLM Developments Proficient in the use of Python. Experience in back end frameworks (FastAPI, Flask or Django) Ideally experienced in deploying AI Systems in cloud environments such as Azure, GCP or AWS Understanding of best practices. As part ...

workflows. What You’ll Do Build & own core backend systems · Build and optimise databases for complex, real-world data · Design and implement APIs using FastAPI for AI workflows and product features · Build and scale LangGraph-based multi-agent systems with checkpointing, retries, and observability · Integrate and scale vector search, knowledge … real customer usage and feedback What We’re Looking For Essential · 2-3 years building backend systems for real users · Production experience with FastAPI (or similar modern Python frameworks) · Solid understanding of API design, PostgreSQL, and distributed systems fundamentals · Experience deploying and operating services on cloud infrastructure ...

cost/safety guardrails). Essential Requirements 3-6+ years building production backends/services , with shipped work and clear ownership. Strong Python (FastAPI) and database skills ( PostgreSQL/MongoDB ); solid API design fundamentals. Familiarity with AWS serverless patterns and Docker for bespoke services; basic CI/CD concepts. … Security hygiene (secrets, permissions, least-privilege) and practical data-privacy basics. Planning & execution in Linear (or similar). Tools & Stack Backend/Runtime: Python (FastAPI), Node.js. Datastores: PostgreSQL, MongoDB (as appropriate), Redis (caching/sessions). Vectors/Embeddings: Chroma (or similar). AI Models & APIs: Claude (Anthropic), Gemini (Google ...

part of a team that's pushing boundaries. What you'll do Design, build, and optimize high-performance Back End systems in Python and FastAPI Develop and maintain Back End systems that handle large volumes of Real Time data Write clean, testable, and maintainable code following best practices Contribute … collaborative, fast-moving environment What we're looking for Strong professional experience with Python Solid experience building RESTful APIs with FastAPI (or similar frameworks like Flask/Django) Passion for performance, scalability, and automation Experience or interest in AI A proactive mindset - someone who loves solving problems and experimenting with ...

flows, while also contributing to the frontend where needed. What you’ll do Design and build backend services and APIs in Python, typically using FastAPI or similar frameworks Build and maintain frontend features using React and Next.js Own data models, background workers, async processing, and system behaviour Work with relational … Collaborate closely with other engineers to ship production features quickly and safely How the stack looks in practice Python for backend services and APIs FastAPI or similar modern Python frameworks React with Next.js on the frontend Relational databases with Redis for caching and background jobs Async processing and worker based ...

Technical Lead | Product Technical Lead | Tech Lead | Product Manager | AI/Data Science | Python | FastAPI | SaaS | Hybrid 2 days a week | Central London | £85,000 + 15% bonus I am currently working with a brilliant consultancy with deep expertise in their field of Data and Cyber Security solutions, predominantly with … fullest. Key skills Strong software engineering skills, delivering end-to-end software products. Highly product orientated. Highly skilled in Python development, with knowledge of FastAPI framework. Good databases knowledge with schema design and SQL. Some front-end development preferably TypeScript & React is highly desirable. Experience of designing scalable systems ...

Senior Backend Engineer | London | £100,000 - £160,000 | Python | FastAPI | Systems Location: London based - hybrid Salary: £100,000 - £160,000 + equity Tech Stack: Backend: Python (FastAPI) Cursor, Claude Code AWS Are you a backend engineer who cares more about building robust systems than chasing AI hype? We are working ...

Founding BE Engineer (Python, FastAPI) Salary up to £85,000 +Equity London - 3 days a week Early stage MedTech Startup, building tools that help design better, fairer, and more effective clinical trials. Their work sits at the intersection of data, science, and human decision-making, which have a direct impact … direct impact on shaping the product and overall feel of the platform and useability. Design and build core back-end services in Python (FastAPI) Produce prototypes, including data ingestion pipelines, embedding workflows, and recommendation components Develop high-performance APIs supporting semantic search, clustering insights, and protocol-generation features Deploy, operate ...

user-facing features and reporting. Continuously improve reliability, performance, deployment, and monitoring as the platform scales. What We're Looking For: Tech Stack: Backend: FastAPI, Airflow Databases: PostgreSQL, MongoDB Messaging & Streaming: Kafka Ideal Experience: 5+ years' experience building and maintaining mission-critical backend systems. Strong background in microservices-based architectures. … annual leave. If you are interested in the above role, click the 'Apply Now' button for immediate review. Senior Backend Engineer, Backend Engineer, Python, FastAPI, Kafka, Airflow, PostgreSQL, MongoDB, Microservices, Event-Driven Architecture, Cybersecurity, SaaS Circle Recruitment is acting as an Employment Agency in relation to this vacancy. Earn yourself ...

Senior Backend Engineer – High-Scale Systems | Python & FastAPI | Security SaaS Salary: £75k - £85k plus bonus Location: Fully remote, (UK-based) Sponsorship is not available for this role Prism Digital have partnered with a super interesting and niche VC-backed client specialising in attack surface management and automated red teaming. Their … messaging queues e.g., Kafka (nice to have) This is entirely a Python back-end development role (Python 3), where the core framework used is FastAPI and Kafka for the messaging queues. The data sits in PostreSQL and MongoDB. Benefits Up to £85,000 Fully remote 28-day holidays (including bank ...

Founding FullStack Engineer (VueJS/React, TypeScript,Python, FastAPI) Salary up to £95,000 +Equity London - 3 days a week Early stage MedTech Startup, building tools that help design better, fairer, and more effective clinical trials. Their work sits at the intersection of data, science, and human decision-making, which … direct impact on shaping the product and overall feel of the platform and useability. Design and build back-end services and APIs in Python (FastAPI) that power the core platform Develop front-end components in Vue.js , turning complex data and AI outputs into intuitive user experiences Own features ...

About Linda AI Healthcare runs on conversations - scheduling, intake, triage, refills, follow-ups. But humans are drowning in them. Linda AI builds autonomous healthcare agents that handle these workflows end-to-end, over voice, with ...