1 to 25 of 32 FastAPI Jobs in the South East

Senior Python Engineer

Hiring Organisation
INTEC SELECT LIMITED
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£450.00 per day
cloud engineering, and language assessment. Key Skills & Experience: Strong commercial Python development experience, including object-oriented and functional programming. Strong experience with FastAPI, Pydantic, SQLAlchemy, Alembic, Pytest, and type checking. Experience with Pandas, NumPy, Jupyter, OpenTelemetry, Git/GitHub, GitHub Actions, and Docker. Experience developing microservices and/or Lambda ...

Senior Software Engineer Python

Hiring Organisation
MarkIT Placements
Location
Didcot, Oxfordshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
environment, this role offers both autonomy and real impact. Requirements Backend Architecture & APIs (Primary Focus) Design and evolve scalable backend services in Python using FastAPI for high-availability, high-throughput workloads. Build well-versioned RESTful APIs aligned to OpenAPI/Swagger, with strong conventions for consistency, idempotency, and backward compatibility. ...

Software Engineer - Data & AI

Location
Woking, England, United Kingdom
agile sprints, balancing exploratory R&D with production-grade delivery. Give honest estimates and flag scope risk early. What You'll Bring Python (FastAPI), Node.js, REST APIs. SQL and PostgreSQL. Redis/Valkey for session and WebSocket coordination at scale. Strong JavaScript/TypeScript, HTML5, CSS React (or equivalent), component ...

Full Stack Engineer - Contract - Must Be SC Cleared

Hiring Organisation
VIQU IT Recruitment
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
partners and turning what they need into something buildable. What You Will Need Python. Serious commercial experience building back end services, APIs and tooling. FastAPI, Django, Flask, whichever you have used in anger. TypeScript. Serious commercial experience on modern front ends with React, Vue or Angular. Linux. Properly comfortable without ...

Software Engineer - Data & AI

Hiring Organisation
McLaren Group
Location
Woking, Surrey, United Kingdom
Salary
£ 80 K
agile sprints, balancing exploratory R&D with production-grade delivery. Give honest estimates and flag scope risk early. What You'll Bring Python (FastAPI), Node.js, REST APIs.SQL and PostgreSQL.Redis/Valkey for session and WebSocket coordination at scale.Strong JavaScript/TypeScript, HTML5, CSSReact (or equivalent), component architecture, state management.Responsive design ...

Python Developer

Location
Reading, England, United Kingdom
ongoing platform reliability Strengthen application security, deployment practices and technical documentation We are looking for: 5+ years of commercial Python development experience, ideally including FastAPI and strong asynchronous Python Strong PostgreSQL/SQL experience alongside SQLAlchemy or SQLModel Docker, Kubernetes/OpenShift, CI/CD and automated testing with pytest ...

Python Developer - AI / LLM Platform

Hiring Organisation
Ncounter
Location
Reading, Berkshire, United Kingdom
Employment Type
Full-Time
Salary
£90,000 - £100,000 per annum
ongoing platform reliability • Strengthen application security, deployment practices and technical documentation We are looking for: • 5+ years of commercial Python development experience, ideally including FastAPI and strong asynchronous Python • Strong PostgreSQL/SQL experience alongside SQLAlchemy or SQLModel • Production experience integrating OpenAI, Azure OpenAI or comparable LLM APIs • Docker, Kubernetes ...

Machine Learning Engineer - Conversational AI & MLOps

Hiring Organisation
Robert Walters
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £90,000 per annum
Automatic Speech Recognition (ASR), Text-to-Speech (TTS), LLM and Small Language Model (SLM) pipelines. Building high-performance asynchronous REST and WebSocket APIs using FastAPI to support real-time conversational AI applications. Deploying machine learning workloads across AWS, Azure, GCP and on-premise/bare-metal infrastructure . Designing automated ...

Lead AI Engineer

Location
Crawley, England, United Kingdom
between technical developers and business teams, showcasing strong leadership, creativity, and ethical problem‐solving. **Technical Expertise & Tools**: Python: Advanced, production‐grade proficiency (Pandas, NumPy, FastAPI/Flask) with an absolute focus on writing clean, modular, and highly testable code. SQL: Expert querying, database design, partitioning, and optimization strategies for large ...

Lead AI Engineer

Hiring Organisation
Hackajob Ltd
Location
Crawley, West Sussex, South East, United Kingdom
Employment Type
Permanent, Work From Home
between technical developers and business teams, showcasing strong leadership, creativity, and ethical problem-solving. Technical Expertise & Tools : Python: Advanced, production-grade proficiency (Pandas, NumPy, FastAPI/Flask) with an absolute focus on writing clean, modular, and highly testable code. SQL: Expert querying, database design, partitioning, and optimization strategies for large ...

Lead Data Scientist - AI

Hiring Organisation
Hackajob Ltd
Location
Crawley, West Sussex, South East, United Kingdom
Employment Type
Permanent, Work From Home
between technical developers and business teams, showcasing strong leadership, creativity, and ethical problem-solving. Technical Expertise & Tools : Python: Advanced, production-grade proficiency (Pandas, NumPy, FastAPI/Flask) with an absolute focus on writing clean, modular, and highly testable code. SQL: Expert querying, database design, partitioning, and optimization strategies for large ...

Principal Data Scientist - AI, MLOps & GenAI Lead

Hiring Organisation
Hackajob Ltd
Location
Crawley, West Sussex, South East, United Kingdom
Employment Type
Permanent, Work From Home
between technical developers and business teams, showcasing strong leadership, creativity, and ethical problem-solving. Technical Expertise & Tools : Python: Advanced, production-grade proficiency (Pandas, NumPy, FastAPI/Flask) with an absolute focus on writing clean, modular, and highly testable code. SQL: Expert querying, database design, partitioning, and optimization strategies for large ...

Agentic AI Software Engineer

Hiring Organisation
Adecco
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
generation AI platforms, cloud native infrastructure, and intelligent agent based applications that support cutting edge scientific research. Key Skills & Experience Strong Python development experience FastAPI and backend API development Cloud platforms (GCP and/or Azure) Kubernetes, Docker, and cloud-native architectures CI/CD, Infrastructure as Code, and DevOps ...

Senior AI Developer

Hiring Organisation
Tribe Appointments Ltd
Location
Reading, Berkshire, South East, United Kingdom
Employment Type
Permanent
Salary
£80,000
delivery strategy, identifying opportunities to package AI capabilities. Required Skills & Experience Strong full-stack development experience (React/Node.js, .NET/C#, Python/FastAPI). Proven background delivering production software in client-facing environments. Experience with LLM integration, prompt engineering, RAG or agentic AI development. Familiarity with AI-assisted ...

Senior Threat Modelling & Application Security Engineer

Hiring Organisation
Sanderson
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£450.00 - £500.00 per day
Knowledge of OWASP, CWE, authentication, authorisation, encryption and infrastructure security. Experience with Terraform/CloudFormation, CI/CD and Jira. Strong Python skills, including FastAPI and Pytest. Experience within a regulated environment. Desirable Docker, Kubernetes, Helm, Serverless, GitOps and CDK. Penetration testing exposure. Snowflake, MongoDB, Databricks, GitHub and Terraform Cloud. ...

AI Technical Lead - Contract

Hiring Organisation
167 Solutions Ltd
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£500.00 - £700.00 per day
Multi-agent systems Voice AI Speech-to-text/text-to-speech ElevenLabs AWS Bedrock Amazon SageMaker Google Cloud Platform (GCP) Vertex AI Python FastAPI/APIs LangChain/LangGraph Vector databases Embeddings and semantic search Hugging Face/open-source AI models Prompt engineering Model evaluation and optimisation MLOps ...

Network DevOps Engineer

Hiring Organisation
Anson Mccade
Location
Stevenage, Hertfordshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£55,000
ground up for applications and APIs. Strong experience designing, consuming, and integrating REST and GraphQL APIs using frameworks such as Django REST Framework, FastAPI, and Pydantic. Proficiency with standard data structures, serialisation, and templating languages (JSON, YAML, Jinja2). In-depth understanding of DevOps principles and Agile methodologies (Scrum, Kanban ...

Lead AI Engineer

Location
Crawley, England, United Kingdom
between technical developers and business teams, showcasing strong leadership, creativity, and ethical problem‐solving. Technical Expertise & Tools: Python: Advanced, production‐grade proficiency (Pandas, NumPy, FastAPI/Flask) with an absolute focus on writing clean, modular, and highly testable code; SQL: Expert querying, database design, partitioning, and optimization strategies for large ...

Software Engineer II, Agentic AI

Location
Oxford, England, United Kingdom
options and contribute to implementation plans. Design, develop, test and maintain cloud-native microservices and REST APIs using Python and relevant frameworks such as FastAPI , FastMCP and Temporal. Contribute to LLM-powered applications and the supporting services used to develop, deploy, observe and operate them. Integrate data technologies such … Sound Python development skills and the ability to produce readable, maintainable and tested code. Working knowledge of API development and a framework such as FastAPI, Flask or Django. Working knowledge of AWS services and cloud‐native application concepts. Working knowledge of Docker, Kubernetes, CI/CD and Unix/Linux ...

Senior Data Scientist

Hiring Organisation
Sirius Analysis Limited
Location
Portsmouth, Hampshire, South East, United Kingdom
Employment Type
Permanent
Salary
benefits, pension (7% contribution), 25 days holiday & life insurance
translating customer requirements intotechnical requirements and development objectives. Pythonexpertisecovering standard data sciencelibraries (NumPy, pandas, matplotlib, Scikit-learn,PyTorch, etc),web frameworks (Flask or FastAPI) and visualisation(Dash,Plotly,&Streamlit). Proficient inSQL. Working with unstructured data Building customer and stakeholder relationships. Supporting and leading authoring of technical reports and presenting ...

Software Engineer II – AI & Cloud Microservices

Location
Oxford, England, United Kingdom
Agentic AI team in Canada. You will design, build and support AI-powered cybersecurity capabilities, delivering cloud-native microservices and REST APIs with Python, FastAPI and Temporal. You will collaborate across engineering, product, DevOps and security to ensure secure, scalable services and responsible AI practices. The role emphasizes cloud-native ...

Senior Azure AI Full-Stack Developer (Hybrid, Reading)

Location
Reading, England, United Kingdom
enterprise customers. You’ll work across customer projects, turning business needs into production-grade software using React, Node.js, .NET/C#, Python and FastAPI, with a focus on secure, scalable solutions in Azure. This hybrid role combines hands-on development with mentoring and defining reusable AI patterns. #J-18808-Ljbffr ...

Infrastructure Developer

Hiring Organisation
Ncounter
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£110,000 - £130,000 per annum
cloud • Working closely with infrastructure, platform, security and application engineering teams We are particularly interested in engineers with: • Strong commercial Python software development experience • FastAPI, SQLAlchemy, Pydantic and PostgreSQL exposure • Excellent REST API design and systems integration knowledge • Experience modelling complex infrastructure or configuration data • Knowledge across at least ...

Threat Modeling – Cyber Security

Hiring Organisation
Diana Duggan UK Limited
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£450.00 - £500.00 per day
CloudFormation) Understanding of docker/K8S/serverless/helm – must. Strong proficiency in Programming Languages, with a preference for Python (asynchronous programming), and FastAPI Unit Testing: Developing and executing unit tests using frameworks like Pytest to ensure code quality Ensure all software platforms adhere to security standards and Software ...

AI Engineer - LLM & Agentic Systems

Hiring Organisation
INTEC SELECT LIMITED
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£600.00 - £650.00 per day, Negotiable
problems. Owning delivery end-to-end - from initial exploration through to production deployment, integration and ongoing iteration. Working with MCP-style architectures (FastMCP/FastAPI) and LangChain/LangGraph or equivalent frameworks to build reliable, scalable systems. Integrating AI into products, APIs and core business workflows - with a sharp ...