FastAPI Jobs in the South East

51 to 75 of 86 FastAPI Jobs in the South East

Lead Backend Engineer

london (city of london), south east england, united kingdom
Hybrid / WFH Options
Few&Far
embark on their next phase of expansion. You'll be 100% hands-on, with the opportunity to step into a leadership role as the team scales. Tech Stack - Python, FastAPI, AWS, PostgreSQL, NumPy, Pandas What You’ll Be Doing - Designing, building, and maintaining scalable backend systems for AI-driven healthcare solutions. Working closely with the ML engineers to integrate AI More ❯
Posted:

Lead Backend Engineer

slough, south east england, united kingdom
Hybrid / WFH Options
Few&Far
embark on their next phase of expansion. You'll be 100% hands-on, with the opportunity to step into a leadership role as the team scales. Tech Stack - Python, FastAPI, AWS, PostgreSQL, NumPy, Pandas What You’ll Be Doing - Designing, building, and maintaining scalable backend systems for AI-driven healthcare solutions. Working closely with the ML engineers to integrate AI More ❯
Posted:

AI Engineer

London, South East, England, United Kingdom
Hybrid / WFH Options
Circle Recruitment
through to deployment Should have experience in agile product delivery, working within a small interdisciplinary team to deliver as a group Assisting with the maintenance and iteration of a FastAPI-based web API hosted on AWS. Enhancing the existing product in line with the roadmap, focusing on data ingestion, UI updates (with a Fullstack Developer), and potential agentic features. Supporting More ❯
Employment Type: Contractor
Rate: £700 - £850 per day
Posted:

Lead Engineer - Stealth AI Startup

london, south east england, united kingdom
Urban Digital Recruitment Ltd
in project delivery : taking ideas from concept to production under tight timelines. Comfort with ambiguity and speed — this is an early-stage, high-autonomy environment. Tech Snapshot Python 3.11+, FastAPI, SQLAlchemy, Alembic, PostgreSQL AWS (IAM, SES, Bedrock) Event-driven architecture, API-first development AI/ML pipelines integrated into core workflows Why This Role Take over a Lead position and More ❯
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Lead Engineer - Stealth AI Startup

slough, south east england, united kingdom
Urban Digital Recruitment Ltd
in project delivery : taking ideas from concept to production under tight timelines. Comfort with ambiguity and speed — this is an early-stage, high-autonomy environment. Tech Snapshot Python 3.11+, FastAPI, SQLAlchemy, Alembic, PostgreSQL AWS (IAM, SES, Bedrock) Event-driven architecture, API-first development AI/ML pipelines integrated into core workflows Why This Role Take over a Lead position and More ❯
Posted:

Lead Engineer - Stealth AI Startup

london (city of london), south east england, united kingdom
Urban Digital Recruitment Ltd
in project delivery : taking ideas from concept to production under tight timelines. Comfort with ambiguity and speed — this is an early-stage, high-autonomy environment. Tech Snapshot Python 3.11+, FastAPI, SQLAlchemy, Alembic, PostgreSQL AWS (IAM, SES, Bedrock) Event-driven architecture, API-first development AI/ML pipelines integrated into core workflows Why This Role Take over a Lead position and More ❯
Posted:

Full Stack Engineer

london, south east england, united kingdom
Hybrid / WFH Options
Futuria
world needs, contributing directly to products that redefine how humans and intelligent agents collaborate. Key Responsibilities Design, implement, and maintain scalable back-end systems and RESTful APIs using Python (FastAPI/D) Apply domain-driven design and test-driven development to build microservices using agile methodologies, with a focus on reliability Develop, test, and deploy LLM-based applications in secure … re motivated by the opportunity to build meaningful, production-ready tools at the frontier of LLMs, agentic AI, and enterprise software. Essential: Strong experience with Python and proficiency in FastAPI or Django Proven experience building secure, enterprise-grade, public-facing software in an agile delivery environment Familiarity with SQL and NoSQL databases, including PostgreSQL, Redis, or MongoDB Solid understanding of More ❯
Posted:

Full Stack Engineer

slough, south east england, united kingdom
Hybrid / WFH Options
Futuria
world needs, contributing directly to products that redefine how humans and intelligent agents collaborate. Key Responsibilities Design, implement, and maintain scalable back-end systems and RESTful APIs using Python (FastAPI/D) Apply domain-driven design and test-driven development to build microservices using agile methodologies, with a focus on reliability Develop, test, and deploy LLM-based applications in secure … re motivated by the opportunity to build meaningful, production-ready tools at the frontier of LLMs, agentic AI, and enterprise software. Essential: Strong experience with Python and proficiency in FastAPI or Django Proven experience building secure, enterprise-grade, public-facing software in an agile delivery environment Familiarity with SQL and NoSQL databases, including PostgreSQL, Redis, or MongoDB Solid understanding of More ❯
Posted:

Senior Backend Software Engineer - Pathogen

Oxford, Oxfordshire, United Kingdom
Ellison Institute, LLC
Overview Led by a world-class faculty of scientists, technologists, policy makers, economists and entrepreneurs, the Ellison Institute of Technology aims to develop and deploy commercially sustainable solutions to solve some of humanity's most enduring challenges. Our work is More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Software Engineer (Python/Rust)

london, south east england, united kingdom
Realm
Engineer (3+ years’ experience) to take ownership of core backend systems end-to-end, from infrastructure to database design. Ideal Profile: Strong experience with Python and SQL Familiarity with FastAPI , Pydantic , and PostgreSQL Bonus: experience with lower-level languages such as Rust Role Details: Compensation: £80K–£130K + equity (0.1–0.3%) Location: On-site in London, 4/5 days More ❯
Posted:

Software Engineer (Python/Rust)

london (city of london), south east england, united kingdom
Realm
Engineer (3+ years’ experience) to take ownership of core backend systems end-to-end, from infrastructure to database design. Ideal Profile: Strong experience with Python and SQL Familiarity with FastAPI , Pydantic , and PostgreSQL Bonus: experience with lower-level languages such as Rust Role Details: Compensation: £80K–£130K + equity (0.1–0.3%) Location: On-site in London, 4/5 days More ❯
Posted:

Software Engineer (Python/Rust)

slough, south east england, united kingdom
Realm
Engineer (3+ years’ experience) to take ownership of core backend systems end-to-end, from infrastructure to database design. Ideal Profile: Strong experience with Python and SQL Familiarity with FastAPI , Pydantic , and PostgreSQL Bonus: experience with lower-level languages such as Rust Role Details: Compensation: £80K–£130K + equity (0.1–0.3%) Location: On-site in London, 4/5 days More ❯
Posted:

Lead Data Scientist - Remote

London, South East, England, United Kingdom
Hybrid / WFH Options
Exposed Solutions
tuning, prompt engineering and productionisation · Deep experience in MLOps on Azure, including CI/CD, monitoring and scaling pipelines. · Strong coding skills in Python, with frameworks such as PyTorch, FastAPI and Azure CLI. ALL APPLICANTS MUST BE FREE TO WORK IN THE UK Exposed Solutions is acting as an employment agency to this client. Please note that no terminology in More ❯
Employment Type: Full-Time
Salary: £60,000 - £80,000 per annum
Posted:

AWS Integration Architect

South East, United Kingdom
Anson Mccade
including secure deployments on Lambda and EKS . Strong API design and security expertise (OpenAPI, OAuth2, JWT). Proven integration experience with SAP, Salesforce, Oracle . Proficiency in Flask, FastAPI , or similar frameworks in cloud-native environments. Experience with event-driven patterns and AWS messaging services. Solid understanding of Kubernetes security , IAM roles, encryption, and CI/CD tooling What More ❯
Employment Type: Permanent
Posted:

Python Software Engineer – Hybrid (3 days per week, London) – Up to £90K

london, south east england, united kingdom
Hybrid / WFH Options
Kioni Talent
and problem-solvers — all passionate about writing clean, scalable code and continuously improving their platform. ⭐ What You'll Do Design, build, and maintain backend services using Python (Django/FastAPI) Contribute to architecture and technical design discussions Write clean, maintainable, and well-tested code Work closely with Product and Frontend teams to deliver new features Help improve scalability, performance, and … practices and contribute to a culture of engineering excellence Work on meaningful challenges that have a direct impact on customers 👩 💻 What You'll Need Strong experience with Django or FastAPI Solid understanding of RESTful APIs and database design (SQL/PostgreSQL) Experience with testing frameworks and version control (Git) Familiarity with cloud environments (AWS/GCP/Azure) A collaborative … love to hear from you. 📩 Apply now to learn more about the company and this opportunity! (Python Engineer, Python Developer, Backend Developer, Software Developer, Software Engineer, Django Developer, Django, FastAPI, Flask, AWS, SaaS, REST API, Cloud, CI/CD, Start-up, London, Hybrid More ❯
Posted:

Python Software Engineer – Hybrid (3 days per week, London) – Up to £90K

london (city of london), south east england, united kingdom
Hybrid / WFH Options
Kioni Talent
and problem-solvers — all passionate about writing clean, scalable code and continuously improving their platform. ⭐ What You'll Do Design, build, and maintain backend services using Python (Django/FastAPI) Contribute to architecture and technical design discussions Write clean, maintainable, and well-tested code Work closely with Product and Frontend teams to deliver new features Help improve scalability, performance, and … practices and contribute to a culture of engineering excellence Work on meaningful challenges that have a direct impact on customers 👩 💻 What You'll Need Strong experience with Django or FastAPI Solid understanding of RESTful APIs and database design (SQL/PostgreSQL) Experience with testing frameworks and version control (Git) Familiarity with cloud environments (AWS/GCP/Azure) A collaborative … love to hear from you. 📩 Apply now to learn more about the company and this opportunity! (Python Engineer, Python Developer, Backend Developer, Software Developer, Software Engineer, Django Developer, Django, FastAPI, Flask, AWS, SaaS, REST API, Cloud, CI/CD, Start-up, London, Hybrid More ❯
Posted:

Senior Software Engineer Python FastAPI Data

London, South East, England, United Kingdom
Hybrid / WFH Options
Client Server Ltd
Senior Software Engineer/Developer (Python FastAPI Data) London to £90k Are you a data centric Software Engineer with strong Python and SQL skills? You could be progressing your career in a senior, hands-on role at a fast growing, global Insurance Underwriting technology provider that focusses on developing a complex SaaS calculation platform for rapidly growing Cybersecurity insurance markets. … days per year Season ticket loan Employee Assistance Programme Impactful role with great career progression Apply now to find out more about this Senior Software Engineer/Developer (Python FastAPI Data) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people More ❯
Employment Type: Full-Time
Salary: £75,000 - £90,000 per annum
Posted:

Software Engineer - Python (Contract)

slough, south east england, united kingdom
Harnham
and data infrastructure. You'll work closely with data engineers, AI specialists, and frontend developers to deliver robust, production-quality software. Key Responsibilities: Build and maintain Python web applications (FastAPI preferred) Integrate AI/ML components with backend, data, and compute infrastructure Deliver clean, well-documented code following best practices Implement automated testing frameworks and CI/CD workflows Monitor … and improve performance metrics across deployed tools Collaborate with technical teams to develop end-to-end data pipelines YOUR SKILLS AND EXPERIENCE Essential: Proven Python backend development experience (FastAPI, Flask, or similar) Strong cloud experience (GCP preferred) and understanding of core web app infrastructure Skilled in automated testing (pytest) and modern DevOps tools (Git/GitHub, CI/CD) Experience More ❯
Posted:

Software Engineer - Python Contract

London, South East, England, United Kingdom
Harnham - Data & Analytics Recruitment
and data infrastructure. You'll work closely with data engineers, AI specialists, and frontend developers to deliver robust, production-quality software. Key Responsibilities: Build and maintain Python web applications (FastAPI preferred) Integrate AI/ML components with backend, data, and compute infrastructure Deliver clean, well-documented code following best practices Implement automated testing frameworks and CI/CD workflows Monitor … and improve performance metrics across deployed tools Collaborate with technical teams to develop end-to-end data pipelines YOUR SKILLS AND EXPERIENCE Essential: Proven Python backend development experience (FastAPI, Flask, or similar) Strong cloud experience (GCP preferred) and understanding of core web app infrastructure Skilled in automated testing (pytest) and modern DevOps tools (Git/GitHub, CI/CD) Experience More ❯
Employment Type: Contractor
Rate: £700 - £800 per day
Posted:

Full Stack AI Software Engineer

London, South East, England, United Kingdom
Ada Meher
play a part in shaping the technical vision of this business and work on their product from an early stage. What you'll work on: Backend APIs (Python/FastAPI): Build and maintain secure, high-performance services that drive AI features and data access at scale. RAG & vector search: Design and improve retrieval pipelines (embeddings, chunking, hybrid search, ranking, feedback … pgvector, FAISS, Weaviate, Elasticsearch k-NN), embeddings, and hybrid search methods. Practical knowledge of chunking strategies, indexing, precision/recall trade-offs, reranking, and evaluation techniques. Proficient in Python (FastAPI) and React/Next.js . Solid experience with both SQL and NoSQL databases (Postgres, DynamoDB, etc.). Exposure to LLMs, embeddings, and vector search APIs . Strong understanding of data More ❯
Employment Type: Full-Time
Salary: Competitive salary
Posted:

Backend Software Engineer - GenAI

London, South East, England, United Kingdom
Harnham - Data & Analytics Recruitment
What you'll be doing: Build and maintain Python backend systems for GenAI evaluation Integrate LLM components with data and compute infrastructure Deliver clean, well-tested, production-grade code (FastAPI preferred) Collaborate with ML engineers, data scientists, and DevOps teams Participate in agile delivery and CI/CD improvement initiatives Key Skills: Python, FastAPI, Cloud (GCP/AWS), CI/ More ❯
Employment Type: Contractor
Rate: £33,600 - £38,400 per annum
Posted:

Python Developer

London, South East, England, United Kingdom
Hirexa Solutions UK
Principal Accountabilities Develop backend systems using Python, FastAPI, and related frameworks Manage data with SQL Alchemy, working across PostgreSQL, CosmosDB, and Redis Build scalable cloud solutions using Azure PaaS services (App Services, Function Apps, API Management, etc.) Design and implement RESTful APIs and microservices architecture using Swagger and Postman Handle distributed task processing with Celery Apply TDD principles using PyTest … onboarding Collaborate with cross-functional teams to align on technical goals Foster a culture of innovation and continuous improvement Technical Skills Python Expertise: Strong proficiency in Python, especially with FastAPI, SQL Alchemy, and Celery. Azure PaaS: Hands-on experience with Azure services like App Services, Function Apps, API Management, Service Bus, Storage, Key Vaults, Azure SQL, and Cosmos DB. API More ❯
Employment Type: Full-Time
Salary: Salary negotiable
Posted:

Backend Software Engineer AI

London, South East, England, United Kingdom
Harnham - Data & Analytics Recruitment
components with data, compute, and frontend systems to create scalable, high-performance solutions. Day-to-day responsibilities include: Designing and implementing backend services for Python-based web applications (e.g., FastAPI). Integrating AI and ML components into production systems and APIs. Writing high-quality, well-tested, and well-documented code following best practices. Developing and monitoring metrics to improve system … to build end-to-end pipelines. Participating in agile ceremonies and code reviews to uphold quality and delivery standards. Tech Stack & Skills Core skills: Strong Python backend development experience (FastAPI or similar frameworks) Cloud-native deployment experience (preferably Google Cloud and Cloud Run) Unit testing experience (pytest or similar frameworks) Familiarity with agile development and CI/CD processes Strong More ❯
Employment Type: Contractor
Rate: £750 - £800 per day
Posted:

Software & AI Engineer

London, South East, England, United Kingdom
Harnham - Data & Analytics Recruitment
components with data, compute, and frontend systems to create scalable, high-performance solutions. Day-to-day responsibilities include: Designing and implementing backend services for Python-based web applications (e.g., FastAPI). Integrating AI and ML components into production systems and APIs. Writing high-quality, well-tested, and well-documented code following best practices. Developing and monitoring metrics to improve system … to build end-to-end pipelines. Participating in agile ceremonies and code reviews to uphold quality and delivery standards. Tech Stack & Skills Core skills: Strong Python backend development experience (FastAPI or similar frameworks) Cloud-native deployment experience (preferably Google Cloud and Cloud Run) Unit testing experience (pytest or similar frameworks) Familiarity with agile development and CI/CD processes Strong More ❯
Employment Type: Contractor
Rate: £750 - £800 per day
Posted:

Backend Software Engineer - AI/ML

London, South East, England, United Kingdom
Harnham - Data & Analytics Recruitment
Backend Software Engineer to lead development of APIs and data infrastructure supporting these ML applications. What you'll be doing: Develop backend systems for ML-driven applications using Python (FastAPI) Build data and compute integration pipelines with cross-functional AI teams Design testing and deployment frameworks for model reliability Work collaboratively in agile sprints alongside data and DevOps teams Key … Skills: Python, FastAPI, Git/GitHub, CI/CD, cloud infrastructure (GCP), automated testing (pytest) Nice to Have: Experience with ML model deployment or scientific data systems Ideal for: Engineers who thrive building robust, production-ready backends for AI/ML platforms. More ❯
Employment Type: Contractor
Rate: £700 - £800 per day
Posted:
FastAPI
the South East
10th Percentile
£42,225
25th Percentile
£50,438
Median
£60,000
75th Percentile
£73,125
90th Percentile
£74,250