Senior Python Backend Engineer (FastAPI) - 4-Month Contract

djr; Watford; On-site; GBP 92,000 - 129,000; Full time

Job summary

djr is seeking an experienced Senior Python Backend Engineer to join on a 4-month contract. The role focuses on hands-on development of production backend services, using FastAPI and modern Python patterns.

You will design, build and improve scalable REST APIs and distributed systems, work with Kafka or RabbitMQ, debug production code, and contribute to code quality alongside senior backend engineers.

Qualifications

• Experience designing and maintaining production REST APIs.
• Hands-on design, build and improvement of production backend services.
• Comfortable debugging and improving existing production code.

Responsibilities

• Designing and building production Python backend services using FastAPI.
• Developing scalable REST APIs and distributed backend systems.
• Working with event-driven architectures using Kafka or RabbitMQ.
• Improving performance, reliability and maintainability of existing services.
• Collaborating with experienced backend engineers on architecture and code quality.

Skills

Strong SQL knowledge

Distributed systems design

REST API design

Production backend experience

Debugging production code

Tools

FastAPI

Kafka

RabbitMQ

Docker

SQLAlchemy

Pytest

Job description

djr is seeking an experienced Senior Python Backend Engineer to join on a 4-month contract. The role focuses on hands-on development of production backend services, using FastAPI and modern Python patterns.

You will design, build and improve scalable REST APIs and distributed systems, work with Kafka or RabbitMQ, debug production code, and contribute to code quality alongside senior backend engineers.