151 to 175 of 279 FastAPI Jobs

Senior Software Engineer

Hiring Organisation
Intellect Group
Location
Ipswich, Suffolk, UK
Employment Type
Full-time
hands on role where you'll work across the stack, leading frontend development with React and Next.js while also contributing to a Python (FastAPI) backend that powers AI driven insights and data heavy systems. You'll have real ownership, influence technical direction, and help shape a platform used to simplify … Working closely with product, design, and data teams to create intuitive user experiences Building and maintaining scalable APIs and backend services in Python using FastAPI Contributing to architectural decisions as the platform evolves and transitions from Azure to GCP Ensuring strong integration between frontend and backend with a focus ...

Senior Software Engineer

Hiring Organisation
Intellect Group
Location
Norwich, Norfolk, UK
Employment Type
Full-time
hands on role where you'll work across the stack, leading frontend development with React and Next.js while also contributing to a Python (FastAPI) backend that powers AI driven insights and data heavy systems. You'll have real ownership, influence technical direction, and help shape a platform used to simplify … Working closely with product, design, and data teams to create intuitive user experiences Building and maintaining scalable APIs and backend services in Python using FastAPI Contributing to architectural decisions as the platform evolves and transitions from Azure to GCP Ensuring strong integration between frontend and backend with a focus ...

Senior Software Engineer

Hiring Organisation
Intellect Group
Location
Wakefield, West Yorkshire, UK
Employment Type
Full-time
hands on role where you'll work across the stack, leading frontend development with React and Next.js while also contributing to a Python (FastAPI) backend that powers AI driven insights and data heavy systems. You'll have real ownership, influence technical direction, and help shape a platform used to simplify … Working closely with product, design, and data teams to create intuitive user experiences Building and maintaining scalable APIs and backend services in Python using FastAPI Contributing to architectural decisions as the platform evolves and transitions from Azure to GCP Ensuring strong integration between frontend and backend with a focus ...

Senior Software Engineer

Hiring Organisation
Intellect Group
Location
Hemel Hempstead, Hertfordshire, UK
Employment Type
Full-time
hands on role where you'll work across the stack, leading frontend development with React and Next.js while also contributing to a Python (FastAPI) backend that powers AI driven insights and data heavy systems. You'll have real ownership, influence technical direction, and help shape a platform used to simplify … Working closely with product, design, and data teams to create intuitive user experiences Building and maintaining scalable APIs and backend services in Python using FastAPI Contributing to architectural decisions as the platform evolves and transitions from Azure to GCP Ensuring strong integration between frontend and backend with a focus ...

Senior Software Engineer

Hiring Organisation
Intellect Group
Location
Newport, Isle of Wight, UK
Employment Type
Full-time
hands on role where you'll work across the stack, leading frontend development with React and Next.js while also contributing to a Python (FastAPI) backend that powers AI driven insights and data heavy systems. You'll have real ownership, influence technical direction, and help shape a platform used to simplify … Working closely with product, design, and data teams to create intuitive user experiences Building and maintaining scalable APIs and backend services in Python using FastAPI Contributing to architectural decisions as the platform evolves and transitions from Azure to GCP Ensuring strong integration between frontend and backend with a focus ...

Senior Software Engineer

Hiring Organisation
Intellect Group
Location
Crawley, West Sussex, UK
Employment Type
Full-time
hands on role where you'll work across the stack, leading frontend development with React and Next.js while also contributing to a Python (FastAPI) backend that powers AI driven insights and data heavy systems. You'll have real ownership, influence technical direction, and help shape a platform used to simplify … Working closely with product, design, and data teams to create intuitive user experiences Building and maintaining scalable APIs and backend services in Python using FastAPI Contributing to architectural decisions as the platform evolves and transitions from Azure to GCP Ensuring strong integration between frontend and backend with a focus ...

Senior Software Engineer

Hiring Organisation
Intellect Group
Location
Brighton, East Sussex, UK
Employment Type
Full-time
hands on role where you'll work across the stack, leading frontend development with React and Next.js while also contributing to a Python (FastAPI) backend that powers AI driven insights and data heavy systems. You'll have real ownership, influence technical direction, and help shape a platform used to simplify … Working closely with product, design, and data teams to create intuitive user experiences Building and maintaining scalable APIs and backend services in Python using FastAPI Contributing to architectural decisions as the platform evolves and transitions from Azure to GCP Ensuring strong integration between frontend and backend with a focus ...

Senior Software Engineer

Hiring Organisation
Intellect Group
Location
Newcastle upon Tyne, UK
Employment Type
Full-time
hands on role where you'll work across the stack, leading frontend development with React and Next.js while also contributing to a Python (FastAPI) backend that powers AI driven insights and data heavy systems. You'll have real ownership, influence technical direction, and help shape a platform used to simplify … Working closely with product, design, and data teams to create intuitive user experiences Building and maintaining scalable APIs and backend services in Python using FastAPI Contributing to architectural decisions as the platform evolves and transitions from Azure to GCP Ensuring strong integration between frontend and backend with a focus ...

Senior Full Stack Engineer

Hiring Organisation
Crooton
Location
Peterborough, Cambridgeshire, East Anglia, United Kingdom
Employment Type
Work From Home
Salary
£55,000
Senior Full Stack Engineer | AI-Recruitment SaaS (React & Python) Location: Peterborough/Hybrid Salary: £55,000 £65,000 + Bonus Tech: React (TS), Python (FastAPI), Google Vertex AI, Postgres, GCP Build the Future of AI-Driven Recruitment Are you a Senior Engineer who thrives on "greenfield" projects? Do you want … platform thats already making an impact. The Tech Stack Youll be working with: Frontend: React, TypeScript, Vite, Tailwind CSS, Zustand. Backend: Python 3.10+ (FastAPI), Postgres, Redis. AI/Infrastructure: Google Vertex AI, GCP (Cloud Run), Docker, CI/CD. What Youll Be Doing End-to-End Ownership: Building and shipping ...

Backend Software Engineer

Hiring Organisation
Private Company
Location
San Francisco, California, United States
Employment Type
Any
Salary
USD Annual
ambiguity. Key Responsibilities: Design, build, and maintain scalable backend services in a production environment Develop APIs from the ground up using modern Python frameworks (FastAPI, Django) Build and iterate on GenAI systems using techniques such as RAG, prompt engineering, evaluation frameworks, and fine-tuning Rapidly learn and apply … pipelines to support fast iteration and reliability Must-Have Qualifications: 3+ years of professional software development experience Strong experience building backend APIs using Python (FastAPI, Django, or similar ...

Backend Engineer

Hiring Organisation
Anson Mccade
Location
Central London, London, United Kingdom
Employment Type
Permanent, Work From Home
contribute to team learning and development Technology Stack The team leverages modern technologies to deliver robust and scalable solutions: Languages & Frameworks: Python, Django, FastAPI Databases & Search: PostgreSQL, OpenSearch Cloud & DevOps: AWS, Kubernetes, Helm, Terraform Collaboration & Source Control: GitHub About the Candidate The ideal candidate will bring strong technical expertise … passion for building backend systems that scale. Essential skills and experience: Proficient in Python development, with experience in any major framework (e.g., Django, FastAPI) Strong understanding of databases, object-oriented design, data structures and SOLID principles Analytical and problem-solving mindset, with a focus on continuous improvement Ability to collaborate ...

Senior Software Engineer

Hiring Organisation
Addition
Location
Slough, Berkshire, UK
Employment Type
Full-time
Senior Software Engineer (Python - FastAPI) This fast-growing consultancy is pushing the boundaries of AI and data science, helping clients turn complex challenges into scalable, production-ready solutions. They're now hiring a Senior Software Engineer who can blend deep technical expertise with a practical, delivery-focused mindset. Role Overview … data-led software solutions. Developing scalable data pipelines and backend services that support complex modelling work. Setting standards for clean, efficient engineering across Python(FastAPI), SQL and cloud environments. Training, tuning and deploying machine learning models into production. Creating processes for robust data extraction, transformation and management. Integrating new solutions ...

Senior Software Engineer

Hiring Organisation
Addition
Location
City of London, London, United Kingdom
Senior Software Engineer (Python - FastAPI) This fast-growing consultancy is pushing the boundaries of AI and data science, helping clients turn complex challenges into scalable, production-ready solutions. They’re now hiring a Senior Software Engineer who can blend deep technical expertise with a practical, delivery-focused mindset. Role Overview … data-led software solutions. Developing scalable data pipelines and backend services that support complex modelling work. Setting standards for clean, efficient engineering across Python(FastAPI), SQL and cloud environments. Training, tuning and deploying machine learning models into production. Creating processes for robust data extraction, transformation and management. Integrating new solutions ...

Senior Software Engineer

Hiring Organisation
SR2
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 - £140,000 per annum, Negotiable
London | £80,000 - £150,000 | Python | React Location: London-based (hybrid) Salary: £80,000 - £150,000 + equity Tech Stack: Backend: Python (Flask or FastAPI or Django - ideally a blend of 2) Frontend: React, TypeScript Cloud Systems: GCP or AWS Are you a software engineer who enjoys shipping real products … impact without layers of process getting in the way. What you will be doing: Designing, building, and maintaining backend services and APIs using Flask & FastAPI Building and evolving user facing web components using React/TypeScript Integrating third party services and AI models into production workflows Investigating production issues ...

Lead AI Engineer

Hiring Organisation
Euphoric
Location
City of London, London, United Kingdom
benchmark these systems rigorously to ensure they actually work, not just "feel" smart. Build the Backend Foundation: You will spend significant time in Python (FastAPI, SQLAlchemy) building the APIs, data structures, and services that power the product. You are an engineer who ensures the "AI" is delivered on reliable, production … Experience Production Engineering (5+ years): You are a strong software engineer first. You have extensive experience building and maintaining backend services in Python (ideally FastAPI or similar async frameworks) deployed to modern cloud providers (GCP/AWS) or point solutions (Railway, Render, Vercel) Applied AI Architecture: You have built complex ...

Lead AI Engineer

Hiring Organisation
Euphoric
Location
Slough, Berkshire, UK
Employment Type
Full-time
benchmark these systems rigorously to ensure they actually work, not just \"feel\" smart. Build the Backend Foundation: You will spend significant time in Python (FastAPI, SQLAlchemy) building the APIs, data structures, and services that power the product. You are an engineer who ensures the \"AI\" is delivered on reliable, production … Experience Production Engineering (5+ years): You are a strong software engineer first. You have extensive experience building and maintaining backend services in Python (ideally FastAPI or similar async frameworks) deployed to modern cloud providers (GCP/AWS) or point solutions (Railway, Render, Vercel) Applied AI Architecture: You have built complex ...

AI Engineer

Hiring Organisation
Pulse IT Recruitment Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£40,000 - £65,000 per annum
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 ...

Backend Engineer (AI Platform) - London

Hiring Organisation
Revax
Location
London, England, United Kingdom
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 ...

Full Stack Developer - Python, react, AWS

Hiring Organisation
Reed Technology
Location
Birmingham, West Midlands, West Midlands (County), United Kingdom
Employment Type
Permanent
Salary
£42000 - £55000/annum
make a real impact in the industry. What you'll do as the Full Stack Developer: Design and develop robust backend systems using Python (FastAPI or Flask). Build and integrate RESTful and GraphQL APIs . Develop React-based front-end components for a seamless user experience. Architect and deploy … Debug and troubleshoot issues to keep things running smoothly. What my client are looking for in their next Full Stack Developer: Proven Python experience (FastAPI or Flask preferred). React expertise -this is essential. Strong experience with AWS cloud services (EC2, Lambda, S3, DynamoDB, etc.). Solid understanding ...

Senior Engineer Data, AI & Analytics (m/w/d) - Hybrid

Hiring Organisation
Purpose Green
Location
Charlottenburg, Berlin, Germany
Employment Type
Permanent
Salary
EUR 50,000 - 75,000 Annual
e.g., Census, Hightouch) or building custom syncs to HubSpot, Slack, APIs Responsibilities: AI & Application Engineering • Architect and deploy AI-powered systems into production (e.g., FastAPI apps with RAG architecture using OpenSearch and Langfuse) • Optimize agentic workflows, prompt & embedding pipelines, and retrieval quality through experimentation and tracing • Extend LLM capabilities with … high-performing Data & AI team. Help hire, mentor, and establish best practices as we grow Technologies: AI AWS Architect Azure Cloud ETL FastAPI GCP IAM Support LLM Looker Power BI Python SQL Slack Terraform dbt More: Welcome We are looking for a senior-level engineer to take full ownership ...

Founding Engineer (Full Stack / Backend)

Hiring Organisation
Affinity Labs
Location
London Area, United Kingdom
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 ...

Founding Engineer (Full Stack / Backend)

Hiring Organisation
Affinity Labs
Location
Slough, Berkshire, UK
Employment Type
Full-time
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 ...

Full Stack Developer

Hiring Organisation
Reed
Location
Walsall, West Midlands, England, United Kingdom
Employment Type
Full-Time
Salary
£45,000 - £55,000 per annum, Negotiable
make a real impact in the industry. What you’ll do as the Full Stack Developer: Design and develop robust backend systems using Python (FastAPI or Flask). Build and integrate RESTful and GraphQL APIs . Develop React-based front-end components for a seamless user experience. Architect and deploy … Debug and troubleshoot issues to keep things running smoothly. What my client are looking for in their next Full Stack Developer: Proven Python experience (FastAPI or Flask preferred). React expertise —this is essential. Strong experience with AWS cloud services (EC2, Lambda, S3, DynamoDB, etc.). Solid understanding ...

Backend Software Developer (Python) - London - £100,000 + Comps

Hiring Organisation
Hunter Bond
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 100,000 Annual
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 ...

Full Stack Engineer

Hiring Organisation
Trust In SODA
Location
City of London, London, United Kingdom
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 ...