API Developer - Golang/Python
CV-LibraryS1, Orchard Square, SheffieldcontractPosted: 23 April 2026
Apply NowAPI Developer (Golang/Python) – Financial Services
* Inside IR35
* Sheffield (1–2 days/month onsite)
A leading financial services organisation is seeking an experienced API Developer to join their team on a contract basis. This is a great opportunity to work on modern, scalable systems within a highly regulated and fast-paced environment.
This role would suit a developer who enjoys working on backend systems but is comfortable contributing to full-stack solutions when needed. If you’re looking to make an impact within a major financial organisation, this could be a strong fit.
Role Overview
You’ll be responsible for designing, building, and integrating high-performance APIs, with a strong focus on Golang (preferred) or Python. You’ll also collaborate with front-end teams, contributing to web-facing components using technologies such as React or Node.js.
Key Responsibilities
* Design, develop, and maintain robust APIs
* Ensure seamless integration across internal and external systems
* Collaborate with cross-functional teams including front-end developers
* Contribute to architecture decisions and best practices
* Support performance optimisation and scalability initiatives
Required Skills & Experience
* Strong experience with Golang (preferred) or Python
* Proven track record in API development (design, build, integration)
* Understanding of modern software engineering practices
Nice to Have
* Experience with React or Node.js
* Working knowledge of Python (if not primary language)
* Exposure to Rust
Highly Desirable
* Experience with Identity and Access Management (IAM)
* Familiarity with Google Cloud Platform (GCP)
More details available on successful application
* Inside IR35
* Sheffield (1–2 days/month onsite)
A leading financial services organisation is seeking an experienced API Developer to join their team on a contract basis. This is a great opportunity to work on modern, scalable systems within a highly regulated and fast-paced environment.
This role would suit a developer who enjoys working on backend systems but is comfortable contributing to full-stack solutions when needed. If you’re looking to make an impact within a major financial organisation, this could be a strong fit.
Role Overview
You’ll be responsible for designing, building, and integrating high-performance APIs, with a strong focus on Golang (preferred) or Python. You’ll also collaborate with front-end teams, contributing to web-facing components using technologies such as React or Node.js.
Key Responsibilities
* Design, develop, and maintain robust APIs
* Ensure seamless integration across internal and external systems
* Collaborate with cross-functional teams including front-end developers
* Contribute to architecture decisions and best practices
* Support performance optimisation and scalability initiatives
Required Skills & Experience
* Strong experience with Golang (preferred) or Python
* Proven track record in API development (design, build, integration)
* Understanding of modern software engineering practices
Nice to Have
* Experience with React or Node.js
* Working knowledge of Python (if not primary language)
* Exposure to Rust
Highly Desirable
* Experience with Identity and Access Management (IAM)
* Familiarity with Google Cloud Platform (GCP)
More details available on successful application