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Job Title: Python Fast API Developer - Onsite in Bristol 2/3 days per week
Job Description
This role focuses on designing and developing robust Python-based backend applications and services, with a strong emphasis on REST API design and implementation using FastAPI. You will work with Pydantic for schema validation and SQLite for lightweight relational data storage, ensuring high-quality, maintainable, and well-tested code. The position requires close collaboration with a diverse team to deliver scalable, reliable solutions and to continuously improve development and release processes.
Responsibilities
Join a world-leading organisation in the aerospace sector, where you contribute to high-impact, technologically advanced projects. You will work in an environment that values technical excellence, collaboration, and continuous improvement, giving you the opportunity to develop your skills while working with modern tools and practices.
Work Environment
You will work in a professional engineering and software development environment focused on building high-quality backend services and APIs. The role involves daily use of Python, FastAPI, Pydantic, and SQLite, along with modern development and testing practices. You will collaborate closely with a diverse team of technical professionals, participating in code reviews, testing activities, and release processes within a structured, quality-driven setting.
Location
Bristol, UK
Rate/Salary
400.00 - 450.00 GBP Daily
Trading as TEKsystems. Allegis Group Limited, Maxis 2, Western Road, Bracknell, RG12 1RT, United Kingdom. No. 2876353. Allegis Group Limited operates as an Employment Business and Employment Agency as set out in the Conduct of Employment Agencies and Employment Businesses Regulations 2003. TEKsystems is a company within the Allegis Group network of companies (collectively referred to as "Allegis Group"). Aerotek, Aston Carter, EASi, Talentis Solutions, TEKsystems, Stamford Consultants and The Stamford Group are Allegis Group brands. If you apply, your personal data will be processed as described in the Allegis Group Online Privacy Notice available at https://www.allegisgroup.com/en-gb/privacy-notices.
To access our Online Privacy Notice, which explains what information we may collect, use, share, and store about you, and describes your rights and choices about this, please go to https://www.allegisgroup.com/en-gb/privacy-notices.
We are part of a global network of companies and as a result, the personal data you provide will be shared within Allegis Group and transferred and processed outside the UK, Switzerland and European Economic Area subject to the protections described in the Allegis Group Online Privacy Notice. We store personal data in the UK, EEA, Switzerland and the USA. If you would like to exercise your privacy rights, please visit the "Contacting Us" section of our Online Privacy Notice at https://www.allegisgroup.com/en-gb/privacy-notices for details on how to contact us. To protect your privacy and security, we may take steps to verify your identity, such as a password and user ID if there is an account associated with your request, or identifying information such as your address or date of birth, before proceeding with your request. If you are resident in the UK, EEA or Switzerland, we will process any access request you make in accordance with our commitments under the UK Data Protection Act, EU-U.S. Privacy Shield or the Swiss-U.S. Privacy Shield.
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Job Title: Python Fast API Developer - Onsite in Bristol 2/3 days per week
Job Description
This role focuses on designing and developing robust Python-based backend applications and services, with a strong emphasis on REST API design and implementation using FastAPI. You will work with Pydantic for schema validation and SQLite for lightweight relational data storage, ensuring high-quality, maintainable, and well-tested code. The position requires close collaboration with a diverse team to deliver scalable, reliable solutions and to continuously improve development and release processes.
Responsibilities
- Design and develop Python-based applications and backend services.
- Build, document, and maintain REST APIs using FastAPI, ensuring secure and reliable integrations.
- Develop and maintain backend systems that support application functionality and data workflows.
- Streamline the versioning, release, and packaging processes for application code to support efficient deployments.
- Establish and maintain a comprehensive testing strategy, including unit, integration, end-to-end, performance, and resilience tests.
- Write clean, maintainable, and well-tested code that adheres to agreed development standards and best practices.
- Optimise application performance, scalability, and reliability across the backend stack.
- Troubleshoot production issues, perform root cause analysis, and implement long-term fixes.
- Conduct code reviews to ensure code quality, consistency, and adherence to standards.
- Collaborate effectively with a diverse team to refine requirements, propose technical solutions, and deliver features.
- Strong experience in backend development using Python.
- Proven experience in designing and developing REST APIs with FastAPI.
- Hands-on experience with Pydantic for data modelling and schema validation.
- experience working with SQLite or similar relational databases for lightweight data storage.
- Solid understanding of software testing practices, including unit, integration, end-to-end, performance, and resilience testing.
- Ability to write clean, maintainable, and well-structured code.
- Strong problem-solving skills for diagnosing and resolving production issues.
- Ability to communicate effectively and collaborate with a diverse team.
- experience with integration of backend services with other systems and APIs.
- Exposure to DevOps concepts and practices related to versioning, release management, and packaging.
- Familiarity with performance optimisation and scalability techniques for backend systems.
- Understanding of code review processes and development standards.
Join a world-leading organisation in the aerospace sector, where you contribute to high-impact, technologically advanced projects. You will work in an environment that values technical excellence, collaboration, and continuous improvement, giving you the opportunity to develop your skills while working with modern tools and practices.
Work Environment
You will work in a professional engineering and software development environment focused on building high-quality backend services and APIs. The role involves daily use of Python, FastAPI, Pydantic, and SQLite, along with modern development and testing practices. You will collaborate closely with a diverse team of technical professionals, participating in code reviews, testing activities, and release processes within a structured, quality-driven setting.
Location
Bristol, UK
Rate/Salary
400.00 - 450.00 GBP Daily
Trading as TEKsystems. Allegis Group Limited, Maxis 2, Western Road, Bracknell, RG12 1RT, United Kingdom. No. 2876353. Allegis Group Limited operates as an Employment Business and Employment Agency as set out in the Conduct of Employment Agencies and Employment Businesses Regulations 2003. TEKsystems is a company within the Allegis Group network of companies (collectively referred to as "Allegis Group"). Aerotek, Aston Carter, EASi, Talentis Solutions, TEKsystems, Stamford Consultants and The Stamford Group are Allegis Group brands. If you apply, your personal data will be processed as described in the Allegis Group Online Privacy Notice available at https://www.allegisgroup.com/en-gb/privacy-notices.
To access our Online Privacy Notice, which explains what information we may collect, use, share, and store about you, and describes your rights and choices about this, please go to https://www.allegisgroup.com/en-gb/privacy-notices.
We are part of a global network of companies and as a result, the personal data you provide will be shared within Allegis Group and transferred and processed outside the UK, Switzerland and European Economic Area subject to the protections described in the Allegis Group Online Privacy Notice. We store personal data in the UK, EEA, Switzerland and the USA. If you would like to exercise your privacy rights, please visit the "Contacting Us" section of our Online Privacy Notice at https://www.allegisgroup.com/en-gb/privacy-notices for details on how to contact us. To protect your privacy and security, we may take steps to verify your identity, such as a password and user ID if there is an account associated with your request, or identifying information such as your address or date of birth, before proceeding with your request. If you are resident in the UK, EEA or Switzerland, we will process any access request you make in accordance with our commitments under the UK Data Protection Act, EU-U.S. Privacy Shield or the Swiss-U.S. Privacy Shield.
Key Skills
Ranked by relevance
python
fastapi
sqlite
storage
devops
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- Posted
- Jul 02, 2026
- Type
- Full-time
- Level
- Not Applicable
- Location
- Bristol
- Company
- TEKsystems
Industries
IT Services
IT Consulting
Categories
Engineering
Information Technology
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3 roles aligned with this opportunity
View Job Details
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Python Developer
2026-05-20
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United Kingdom
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Engineering
View Job Details
Related
Software Developer
2026-05-05
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Ireland
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View Job Details
Related
Front End Developer
2026-05-16
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United States
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Engineering