Lead Python Developer - £90,000 - DV Cleared

JR United Kingdom; Cheltenham; On-site; GBP 50,000 - 80,000; Full time

Job summary

A leading UK Defence and National Security programme seeks a skilled Lead Python Developer. This role involves driving the design and development of secure software systems, mentoring teams, and ensuring engineering excellence. Ideal candidates possess experience in regulated environments and an active DV Clearance.

Qualifications

• Experience in secure or regulated industries (Defence, Government, Aerospace).
• Active DV Clearance required.
• Ability to guide cross-functional teams.

Responsibilities

• Lead the design and development of Python-based software systems in a high-security setting.
• Mentor developers and enforce best practices.
• Collaborate with stakeholders to gather requirements.

Skills

Python programming

Agile/Scrum

CI/CD

Containerisation (Docker/Kubernetes)

Machine Learning integration

Job description

Social network you want to login/join with:

col-narrow-left

Client:

iO Associates - UK/EU

Location:

Job Category:

Other

-

EU work permit required:

Yes

col-narrow-right

Job Views:

2

Posted:

07.06.2025

Expiry Date:

22.07.2025

col-wide

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]