Python Developer

Spencer Rose Ltd; Watford; Hybrid; GBP 68,000 - 83,000; Full time

Benefits offered by this job

Hybrid work in Watford office

Job summary

Spencer Rose Ltd is seeking a Python Developer for a hybrid role in Watford, Hertfordshire. The candidate will build high-throughput, production-grade back-end services in Python (3.10+), focusing on reliability, performance, and clean code.

You will collaborate with Principal Engineers, mentor peers, review code, and help shape the product roadmap. Experience with FastAPI, Docker, Kubernetes, and cloud-native development on Azure is essential.

Qualifications

• Senior-level Python back end experience with production systems.
• Strong engineering judgement and delivery experience.
• Experience designing and building API-first services with a focus on performance and reliability.
• Hands-on with containerisation (Docker) and orchestration (Kubernetes).
• Experience with messaging/event platforms and cloud-native development on Azure.

Responsibilities

• Collaborate with Principal Engineers and provide mentorship.
• Lead reviews, help shape the roadmap, and promote best practices.
• Develop high-quality Python software for complex business needs.
• Ensure tests, docs, and monitoring are in place.
• Deliver reliable, scalable back-end services meeting acceptance criteria.

Skills

Python

API design

RESTful APIs

OpenAPI/Swagger

Azure

Docker

Kubernetes

Message-driven systems

Back End development

System scalability

Tools

FastAPI

Kafka

RabbitMQ

Azure Service Bus

Job description

Python Developer

Watford, Hertfordshire (Hybrid)

£75,000 per annum + Excellent benefits

On behalf of an industry Leading organisation, I am seeking a Python Developer with strong production experience building high-throughput, message-driven platforms. This role suits someone comfortable working on real-world, always-on systems where reliability, performance, and clear engineering judgement matter as much as clean code.

The business is pleased to offer this role on a hybrid basis with 1-2 days in office; therefore, you must be within reach of their Watford-based offices.

Responsibilities:

• Collaborate closely with Principal Engineers.
• Provide technical guidance, insight, and mentorship to other engineers.
• Participate in peer reviews and offer constructive feedback.
• Support product stakeholders in shaping the roadmap.
• Contribute to best practices and engineering standards across the wider engineering organization.
• Participate in modern software development practices including pairing, code reviews, documentation reviews, testing, and continuous delivery.
• Translate requirements into implementable technical specifications and tasks.
• Maintain accurate and reliable technical documentation.
• Provide regular updates on progress, timelines, risks, and dependencies.
• Lead troubleshooting and incident resolution, including occasional out-of-hours support.
• Ensure unit tests are implemented and fit for purpose.
• Research and evaluate new technologies that could benefit the organisation.
• Design and develop high-quality Python software that meets complex business needs.
• Ensure code, documentation, and testing align with engineering standards.
• Deliver solutions that meet acceptance criteria, performance expectations, and operational reliability.
• Integrate products with monitoring and support tooling.

Experience/Skills required:

• Experienced Python Developer who can make sound trade-offs, design for scale, and contribute to complex systems without over-engineering.
• Strong engineering judgement and real-world delivery experience.
• Senior-level experience designing and building production Back End services in Python (3.10+).
• Strong background in high-throughput, message-based or event-driven systems.
• Proven experience building API-first services, with a focus on performance, reliability, and maintainability.
• Python Back End development, primarily using FastAPI and modern API patterns.
• Strong understanding of RESTful API design, schema validation, and OpenAPI/Swagger.
• Experience working with messaging and eventing platforms such as Kafka, RabbitMQ, Azure Service Bus, MQTT, or similar.
• Cloud-native development experience is essential (ideally on Azure).
• Hands-on experience with containerisation (Docker) and orchestration platforms such as Kubernetes.
• Exposure to building and supporting shared or internal libraries used across multiple services.