Senior Backend Python Developer in Leeds, West Yorkshire

Senior Backend Python Developer

6-Month contract - Inside IR35 - up to £450 per day

Leeds based - hybrid working - 3 days onsite

Responsibilities

• Build and maintain backend services and APIs in line with existing architectural patterns and standards.
• Implement business logic, data access layers, and integrations with internal and external systems.
• Develop and enhance RESTful APIs, following defined contracts and API standards.
• Write clean, maintainable, well-tested code, adhering to agreed engineering best practices.
• Contribute unit and integration tests to ensure functional correctness and regression safety.
• Support feature delivery by implementing backend components from pre-defined designs and tickets.
• Participate in code reviews, addressing feedback and continuously improving code quality.
• Troubleshoot backend issues using logs and diagnostics, escalating complex design concerns to onshore leads.
• Work within an Agile/Scrum team, contributing to sprint delivery and estimations for assigned work.
• Follow established security, performance, and reliability guidelines when implementing backend changes.

Skills & Experience

Core backend engineering

• 3-6+ years of backend development experience.
• Strong experience with Python or equivalent backend frameworks.
• Solid understanding of REST API development, request/response models, and error handling.
• Experience working in microservices-based architectures.

Cloud & infrastructure awareness

• Hands-on experience deploying or running services on GCP or another hyperscaler.
• Familiarity with managed databases (e.g. Cloud SQL, PostgreSQL).
• Understanding of containerised workloads (Docker) and serverless/container platforms (e.g. Cloud Run or Kubernetes).

Data & integration

• Strong SQL skills, including schema usage, query optimisation, and data consistency.
• Experience integrating with external systems via APIs or messaging.
• Awareness of data validation, idempotency, and failure handling patterns.

  Quality & delivery

• Experience writing unit and integration tests for backend services.
• Familiarity with CI/CD pipelines and version control (Git-based workflows).
• Comfortable working from clear requirements, tickets, and technical guidance provided by onshore leads.

  Ways of working
  Experience working as part of a distributed or offshore delivery team.

• Able to communicate progress, blockers, and risks clearly to onshore counterparts.
• Willingness to follow established standards rather than redefine architecture.

Disclaimer

This vacancy is being advertised by either Advanced Resource Managers Limited, Advanced Resource Managers IT Limited or Advanced Resource Managers Engineering Limited ("ARM"). ARM is a specialist talent acquisition and management consultancy. We provide technical contingency recruitment and a portfolio of more complex resource solutions. Our specialist recruitment divisions cover the entire technical arena, including some of the most economically and strategically important industries in the UK and the world today. We will never send your CV without your permission. Where the role is marked as Outside IR35 in the advertisement this is subject to receipt of a final Status Determination Statement from the end Client and may be subject to change.