1 to 25 of 28 FastAPI Jobs in the South East

GenAI Full Stack Developer SC Cleared/Eligible

Hiring Organisation
Sanderson
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £88,000 per annum, OTE
public services and deliver real impact. What You'll Do Develop GenAI applications using frameworks like LangChain, LangGraph, CrewAI . Build microservices with Python (FastAPI) or TypeScript (Express) . Create front-end solutions using React, TypeScript , and modern frameworks like Next.js . Integrate LLMs (OpenAI, Anthropic, Mistral) and vector databases ...

GenAI Full Stack Engineer - Consultant / Senior Consultant

Hiring Organisation
83zero Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£45,000 - £70,000 per annum
skills by exploring and experimenting with emerging technologies, including GenAI. Your skills and experience: Backend Development: Experience in building microservices using either Python with FastAPI, or TypeScript with Express or equivalent Frontend Development: Experience in building React applications using TypeScript, leveraging frameworks such as Next.js or Vite. GenAI Frameworks: Familiarity ...

GenAI Full Stack Engineer - Managing Consultant

Hiring Organisation
83zero Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 - £85,000 per annum
skills by exploring and experimenting with emerging technologies, including GenAI. Your skills and experience: Backend Development: Experience in building microservices using either Python with FastAPI, or TypeScript with Express or equivalent Frontend Development: Experience in building React applications using TypeScript, leveraging frameworks such as Next.js or Vite. GenAI Frameworks: Familiarity ...

GenAI Full Stack Developer (SC Eligible)

Hiring Organisation
Stealth iT Consulting
Location
Maidstone, Kent, UK
Employment Type
Full-time
client site travel). Primary requirements: Must be eligible for SC Clearance Backend Development: Experience in building microservices using either Python with FastAPI, or TypeScript with Express or equivalent Frontend Development: Experience in building React applications using TypeScript, leveraging frameworks such as Next.js or Vite. GenAI Frameworks: Familiarity with tools ...

Senior Developer

Hiring Organisation
Reed
Location
Slough, Berkshire, UK
Employment Type
Full-time
years of commercial software development experience. Proven success in high-performing engineering teams within fast-paced environments. Deep expertise in: Python (Django, Flask, or FastAPI) PostgreSQL (design, optimisation, maintenance) Containerisation (Docker/Kubernetes) Event-driven architecture (Kafka/RabbitMQ) Desirable experience includes: TypeScript/JavaScript (NextJS, NodeJS, Tailwind) Terraform ...

Artificial Intelligence Engineer

Hiring Organisation
Thales
Location
Crawley, West Sussex, UK
Employment Type
Full-time
Biases). Data wrangling and analysis (Pandas, NumPy, SQL); familiarity with Spark or similar is a plus. Model optimisation and deployment fundamentals: ONNX, TorchScript, FastAPI/gRPC; GPU acceleration (CUDA basics desirable). Responsible AI and security awareness: explainability, privacy‐preserving methods (e.g., differential privacy, federated learning), adversarial robustness. Proficient ...

Senior Python Engineer

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£85,000 - £100,000 per annum
streamline operations. As part of their engineering team, you'll design and build robust backend systems and APIs using Python and frameworks like FastAPI, Flask, or Django. The role involves integrating AI models into production environments and optimizing data pipelines for efficiency and scalability. You'll work with cloud platforms ...

Python/ AI Developer

Hiring Organisation
FDM Group
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£55,000 - £75,000 per annum
protection, and API security. About You Python Development: Proficient in Python 3.x (OOP, data structures, exception handling, modules); experience with requests, pandas, numpy, asyncio, FastAPI/Flask; familiar with type hints, virtual environments, and dependency management (pip, poetry). (Reviewing and refactoring existing code in manageable modules added advantage). ...

Back end Engineer

Hiring Organisation
Lorien
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
NatWest platform standards is a strong plus. Experience working within NatWest engineering standards and governance. Ability to deliver microservices in Python when needed (FastAPI/Django). Terraform/IaC, EKS, service meshes, Postgres performance, Kafka. Guidant, Carbon60, Lorien & SRG - The Impellam Group Portfolio are acting as an Employment Business ...

Senior Python Software Engineer - £90k - £100k

Hiring Organisation
Creo Recruitment
Location
Slough, Berkshire, UK
Employment Type
Full-time
technical roadmap: Collaborate with Product, Design, and Data teams to align on priorities and ensure value is delivered incrementally. Core Tech Stack Languages: Python (FastAPI, Flask, or Django) Cloud: AWS (Lambda, ECS/Fargate, S3, DynamoDB, CloudWatch, API Gateway) Data & Messaging: PostgreSQL, Redis, Kafka or SQS CI/CD & Infrastructure ...

Founding Software Engineer

Hiring Organisation
Synkka LTD
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
where your work directly influences how global delivery works. The Stack We work at the frontier of software engineering and AI: Backend: Python + FastAPI Frontend: React Infra: Azure (infra-as-code, CI/CD, observability) AI Stack: LLM pipelines for agentic codegen, testing, and self-healing interfaces What ...

Product Technical Lead

Hiring Organisation
C4S Search Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£65,000 - £83,000 per annum
Continuously improve systems, processes, and infrastructure to enhance scalability, performance, and delivery speed. YOUR KEY SKILLS: Strong software engineering background with advanced Python skills (FastAPI or similar) and solid SQL/database expertise. Experience delivering end-to-end software products and designing scalable, cloud-based systems with CI/ ...

Software Engineer

Hiring Organisation
develop
Location
Slough, Berkshire, UK
Employment Type
Full-time
Improve system performance, reliability, and developer experience Contribute to a positive, inclusive, and high-trust engineering culture Tech Stack Languages & Frameworks: TypeScript (Next.js), Python (FastAPI), Node.js Infrastructure: Vercel, Google Cloud Platform Architecture: Monorepo with shared internal packages AI & Data: Production AI features with ongoing development and iteration What They ...

Data Software Engineer Python Spark SaaS

Hiring Organisation
Client Server
Location
Slough, Berkshire, UK
Employment Type
Full-time
Apache Spark You believe in automating wherever possible You're a collaborative problem solver with great communication skills Other technology in the stack includes: FastAPI, Django, Airflow, Kafka, ETL, CI/CD, experience with some or all would be beneficial but you'll pick it up on the job What ...

Software Engineer

Hiring Organisation
Oscar Associates (UK) Limited
Location
Oxford, Oxfordshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£55,000
include real-time collaboration tools, data-driven platforms, and internal applications supporting customer-facing software. Tech Stack (Open-Source) Backend: Python Frontend: Vue.js Frameworks: FastAPI, Vue 3 Databases: PostgreSQL, Redis Infrastructure: Linux, Docker, CI/CD pipelines Cloud: AWS Testing: Pytest, Jest You don't need experience with every tool ...

Founding Data Engineer

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £80,000 per annum
detail, and ability to work independently Experience with workflow orchestration (Prefect, Airflow, Dagster), cloud data warehouses (BigQuery, Snowflake), or backend Python frameworks (Django, FastAPI) is a plus Benefits 25 days annual leave plus bank holidays Meaningful equity options as the first engineering hire Flexible working: 3 days/week ...

Senior Backend Engineer

Hiring Organisation
Tech Talent Partners
Location
Slough, Berkshire, UK
Employment Type
Full-time
building end-to-end and from zero-to-one, working closely with the founding team as well as clients using the product. Required: Python, FastAPI, Postgres, ElasticSearch, RabbitMQ and -ideally- LLMs. Experience building scalable data pipelines, developing robust APIs and services, improving connectivity and maintaining high code quality. To find ...

Artificial Intelligence Engineer

Hiring Organisation
Wave Talent
Location
Slough, Berkshire, UK
Employment Type
Full-time
built and scaled inside the organisation. What You'll Bring Strong Python engineering skills with experience delivering production AI systems (assumed FastAPI/Flask familiarity). Practical experience working with structured and unstructured data — beyond notebooks and prototypes. Understanding of RAG, embedding retrieval algorithms, self-refinement patterns and knowledge graph ...

Technical Lead

Hiring Organisation
EMBL-EBI
Location
Saffron Walden, Essex, South East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£85,000
About the Team We are looking for a Technical Lead to join the Chemical Biology Resources team at the European Bioinformatics Institute (EMBL-EBI). The Chemical Biology Resources team provides world-leading chemogenomics resources ...

Full Stack Developer

Hiring Organisation
Hays Specialist Recruitment Limited
Location
Uxbridge, Middlesex, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
About the Role We are looking for a skilled senior Full Stack Developer to join our dynamic team. You will work with cutting-edge technologies, maintaining robust applications using Next.js overreact and Tailwind CSS for ...

Software Engineer

Hiring Organisation
Primis
Location
Slough, Berkshire, UK
Employment Type
Full-time
work with one of the UK's fastest growing Scale-Ups as a Backend & Integrations Engineer across thier SaaS apps. A hands on FastAPI & Python focused role for someone who is ready for the fast paced scale-up environment. What you'll do Own backend features and API integrations (Python … FastAPI, gRPC, SQL). Adapt and extend auto-generated pipelines and front-end outputs. Build connectors for APIs, files, and external systems. Integrate LLM-based capabilities with robust evaluation and monitoring. What we're looking for Strong Python backend/API experience; SQL and data modeling skills. Proven integrations experience ...

Software Engineer

Hiring Organisation
Pangea
Location
Slough, Berkshire, UK
Employment Type
Full-time
London | £70,000–£85,000 per year |Hybrid (3 days in office) We are seeking a talented Software Engineer to join a leading asset management technology team, driving innovation through transformative, data‐driven, and scalable ...

Senior Software Engineer

Hiring Organisation
Tiro Partners Limited
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £100,000 per annum
Software Engineer - Python/FastAPI/React/Functional programming/Typescript Location: London, UK (Hybrid) Type: Full-time Level: Mid to Senior Salary: £70,000 to £100,000 Company: VC back Startup About the Role: This startup is building a cutting-edge platform to transform how engineers design physical … Google across Software Engineering, Data Science, Theoretical Physics, and Computational Geometry. Opportunities: Frontend or Backend Tech Stack within the engineering environment: Backend: Python, FastAPI, Pydantic, PostgreSQL, Docker Frontend: React, TypeScript, Vite Infrastructure: GitHub Actions, GCP, Kubernetes (optional) Paradigms: Functional programming, async APIs, event-driven architecture Responsibilities Build and maintain backend ...

Back End Developer

Hiring Organisation
Tiro Partners Limited
Location
Slough, Berkshire, UK
Employment Type
Full-time
Backend Software Engineer – Python/FastAPI/Event Driven Architecture Location: London, UK (Hybrid) Type: Full-time Level: Mid to Senior Salary: £70,000 to £100,000 About the Role: This startup is building a cutting-edge platform to transform how engineers design physical products. Instead of creating one solution … real-world engineering not just building software, but helping change how things are designed and built. Tech Stack within the engineering environment: Backend: Python, FastAPI, Pydantic, PostgreSQL, Docker Infrastructure: GitHub Actions, GCP, Kubernetes (optional) Paradigms: event-driven architecture Responsibilities Build and maintain backend services using FastAPI and Python for geometry ...

Technical Lead

Hiring Organisation
Burns Sheehan
Location
Slough, Berkshire, UK
Employment Type
Full-time
Tech Strategy for a Profitable FinTech Scale-Up Hybrid (London) or remote within the UK £160,000 per annum plus stock options Python | Django | FastAPI | AWS | Rust | Postgres | Event-Driven Architecture | Machine Learning Technical Lead - We're working with a leading fintech scale-up that's transforming how small businesses … Tech Strategy for a Profitable FinTech Scale-Up Hybrid (London) or remote within the UK £160,000 per annum plus stock options Python | Django | FastAPI | AWS | Rust | Postgres | Event-Driven Architecture | Machine Learning ...