Lead Python Developer - £90,000 - DV Cleared

JR United Kingdom; Hounslow; On-site; GBP 90,000; Full time

Job summary

A leading company in the Defence and National Security sector is seeking a highly skilled Lead Python Developer. In this crucial role, you will design and develop advanced software systems in secure environments, ensuring engineering excellence while mentoring your team. This position offers a unique opportunity to contribute directly to national safety operations with a competitive salary and requires active DV Clearance.

Qualifications

• Active DV Clearance required.
• Experience in secure or regulated industries preferred.

Responsibilities

• Lead the design and development of Python software systems in secure settings.
• Work with cross-functional teams to deliver scalable solutions.
• Mentor developers and enforce best practices.

Skills

Python

Agile/Scrum

CI/CD

Containerisation

Mentoring

Tools

Docker

Kubernetes

Job description

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Lead Python Developer - £90,000 - DV Cleared, south west london

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Client:

iO Associates - UK/EU

Location:

south west london, United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Views:

3

Posted:

07.06.2025

Expiry Date:

22.07.2025

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Job Description:

Clearance Required: DV

We're looking for an experienced Lead Python Developer to join a high-impact programme within the UK Defence and National Security sector. This is a unique opportunity to play a key role in delivering secure, mission-critical software systems that directly support national safety and strategic defence operations.

As a technical leader, you'll drive the design and development of advanced Python-based systems-often in highly secure environments guiding cross-functional teams, ensure engineering excellence, and oversee the full software lifecycle, from concept and prototyping to secure deployment and ongoing support.

Key Responsibilities:

• Leading the design and development of Python-based software systems in a high-security setting
• Working closely with data scientists, analysts, and engineering teams to deliver scalable, reliable solutions
• Architecting secure applications and services in line with defence-grade standards
• Mentoring developers and enforcing best practices across code, testing, and deployment
• Integrating machine learning models and real-time data pipelines where applicable
• Collaborating with stakeholders to gather requirements and showcase technical progress
• Experience in secure or regulated industries (Defence, Government, Aerospace, etc.)
• Solid grasp of CI/CD, containerisation (Docker/Kubernetes), and cloud or on-premise deployments
• Ability to lead technical discussions, reviews, and deliverables across cross-functional teams
• Familiarity with Agile/Scrum delivery
• Active DV Clearance

If you are interested in the above position, please contact me, James Chapman on 07903 438136 or drop me an email at [emailprotected]