Senior Python Developer (Fast API)

Insight Global; England; Hybrid; GBP 120,000 - 157,000; Full time

Job summary

A leading staffing agency is seeking a Senior Python Developer with a focus on FastAPI for a premier energy client in London. This mid-senior level contract position involves designing and deploying scalable backend services, collaborating with cross-functional teams, and developing high-performance APIs. The role requires extensive Python experience, API development skills, and proficiency in Azure environments. This is a hybrid position with three days onsite and two days remote, offering a 12-month contract inside IR35.

Qualifications

• Extensive experience with backend Python development.
• Solid understanding of object-oriented programming and software design principles.
• Hands-on experience with API development (REST/GraphQL).
• Proficient with FastAPI.
• Experience working in an Azure cloud environment.
• Experience with Git, CI/CD pipelines, and DevOps tools.
• Strong problem-solving and debugging skills.
• Excellent communication and collaboration abilities.

Responsibilities

• Design, develop, test, and deploy scalable Python-based backend services.
• Collaborate with cross-functional teams including product managers, data engineers, and DevOps.
• Develop and maintain APIs and microservices with high performance and security.
• Optimize applications for maximum speed and scalability.

Skills

Backend Python development

API development

FastAPI

Azure cloud experience

Git

CI/CD pipelines

DevOps tools

Problem-solving skills

Communication skills

Communication

Tools

Azure Functions

PySpark

CI/CD tooling

Job description

Insight Global are seeking a highly motivated Senior Python Developer (Fast API Focused) for one of their premier energy clients in London. This role will be for a 12‑month extended contract (Inside IR35), based 3 days a week onsite in London, 2 days remote.

Overview of Day‑to‑Day

Your initial work will involve abstracting code from our product teams into a shared, common python library leveraging PySpark/data frames. You will also be building microservices in the form of python‑based Azure Functions. After the initial pre‑defined work, you will serve as an extension of the product teams building microservices and libraries to solve the common needs across the teams.

Key Responsibilities

• Design, develop, test, and deploy scalable Python‑based backend services.
• Collaborate with cross‑functional teams including product managers, data engineers, and DevOps.
• Develop and maintain APIs and microservices with high performance and security.
• Optimize applications for maximum speed and scalability.

Must‑Have Requirements

• Extensive experience with backend Python development
• Solid understanding of object‑oriented programming and software design principles
• Hands‑on experience with API development (REST/GraphQL)
• Proficient with FastAPI
• Experience working in an Azure cloud environment
• Experience with Git, CI/CD pipelines, and DevOps tools
• Strong problem‑solving and debugging skills
• Excellent communication and collaboration abilities

Seniority Level

Mid‑Senior level

Employment Type

Contract

Job Function

Information Technology