> Markdown version of [/jobs/ext/2970565-principal-developer](https://www.wearedevelopers.com/jobs/ext/2970565-principal-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Principal Developer

- **Company:** LSL Property Services
- **Location:** Kettering, UK (Remote available)
- **Salary:** £56,090.0
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Application Services, Computer Vision, Unit Testing, Microsoft Azure, Cloud Engineering, Code Review, Continuous Integration, Django Web Framework, Python (Programming Language), PostgreSQL, Machine Learning, Microsoft SQL Server, Performance Tuning, Scrum Methodology, Release Management, Azure DevOps Pipelines, SQL Databases, Systems Integration, Web Applications, Enterprise Software Applications, Cloud Platform System, ReactJS, Flask (Web Framework), Integration Tests, Deployment Automation, Api Design, Software Coding, Restful APIs, Devsecops, Docker
- **Published:** September 18, 2026
- **Apply:** https://www.adzuna.co.uk/jobs/details/5888033946

## About the Role

* Expert-level Python development skills.
 * Strong architecture and solution design expertise.
 * Use of AI to augment the development process.
 * Extensive experience with Django, Flask and React.js and SQL.
 * Strong understanding of API-first architectures.
 * Proven ability in performance optimisation.
 * Experience with Docker containerisation.
 * Advanced DevSecOps, CI/CD and cloud-native application knowledge
 * Experience leading Agile Scrum delivery teams.
 * Excellent communication, stakeholder engagement and documentation skills.

Essentials Experience

 * Significant commercial experience developing enterprise applications using Python.
 * Experience with AI, machine learning or computer vision technologies.
 * Proven experience designing and deploying production-grade web applications and APIs.
 * Experience implementing DevSecOps practices within CI/CD pipelines.
 * Experience deploying containerised applications to cloud environments.
 * Demonstrable experience with:
 * Unit testing
 * Integration testing
 * Functional testing
 * Security testing
 * Automated deployment pipelines
 * Proven experience performing code reviews and maintaining coding standards.

Role values

 * Delivering what we promise, when we promise it - Maintains focus on achieving and exceeding team targets through tenacity and dedication to the role.
 * Putting our customers and their needs first - Demonstrates a quality work ethic, delivering results consistently and accurately and responding to requests respectfully, politely, and professionally at all times.
 * Taking an honest approach to business - Is clear, accountable, reliable, knowledgeable, and direcListening, learning, and finding better ways to make a difference - Looks for opportunities to improve business processes by collaborating with others; is receptive to new ideas and offers solutions to challenges.

## Description

* Build enterprise applications using Python, Django, Flask, React.js and SQL.
 * Develop secure REST APIs and integration services.
 * Apply advanced Python development techniques and best practices.
 * Design, administer, and optimise PostgreSQL and SQL Server databases.
 * Establish coding standards and mentor developers.
 * Design and maintain Azure DevOps pipelines.
 * Implement automated build, test, and deployment processes.
 * Manage containerised applications using Docker and Azure Container Registry (ACR).
 * Oversee release management, environment governance, and deployment controls.


## Related Videos

- [The Evolving Landscape of Application Development: Insights from Three Years of Research](https://www.wearedevelopers.com/videos/1459-the-evolving-landscape-of-application-development-insights-from-three-years-of-research)
- [DevSecOps: Injecting Security into Mobile CI/CD Pipelines](https://www.wearedevelopers.com/videos/273-devsecops-injecting-security-into-mobile-ci-cd-pipelines)
- [Watch Tests Go Brrrr! : Getting Started with Cypress in ReactJS](https://www.wearedevelopers.com/videos/282-watch-tests-go-brrrr-getting-started-with-cypress-in-reactjs)
- [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered)
- [Navigating the Corporate Jungle: Life as a Developer in a large Company](https://www.wearedevelopers.com/videos/621-navigating-the-corporate-jungle-life-as-a-developer-in-a-large-company)
- [DevSecOps: Security in DevOps](https://www.wearedevelopers.com/videos/36-devsecops-security-in-devops)

## Related Articles

- [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers)
- [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs)
- [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer)
- [Navigating the AI Shift](https://www.wearedevelopers.com/magazine/629-navigating-the-ai-shift)
- [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market)
- [7 Most Popular Web Developer Jobs in Europe](https://www.wearedevelopers.com/magazine/163-7-most-popular-web-developer-jobs-in-europe)