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Lead Software Developer- London

Hiring from
United Kingdom
Work type
Hybrid
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About The Role

FDM is a global business and technology consultancy seeking a Lead Software Developer (Python/Django and React) with Active SC to work for our client within the Public sector. This is initially a 3 month contract with the potential to extend and will be a Hybrid role that will be based in London .

Our client is seeking a Lead Software Developer at SFIA level 5 to lead the build of a reusable government CRM. The existing tool helps government teams engage with the UK's most strategically important companies, and a new version is now being built for a team that supports high growth UK businesses. The new version will keep around 90% of the existing functionality and add a small number of targeted features. You will set the technical direction for the squad, working with the client's CRM teams and architects to make sure the new version is reusable and consistent with the core design. You will also support two senior developers along the way. The project runs in agile sprints and ends with a clear handover.

Responsibilities

  • Lead the technical design and build of the new CRM instance, from MVP to rollout.
  • Agree the reuse architecture and the changes from the core CRM with the client's architects and CRM group.
  • Own code quality, peer review, testing standards and CI/CD practice in the squad.
  • Guide the senior developers and help shape sprint priorities with the Delivery Manager and the client team.
  • Make sure new functionality is documented and built for future reuse.
  • Support security, accessibility and technical assurance before rollout.
  • Produce technical documentation and runbooks, and lead the handover to the client's teams

About You

  • Active SC clearance.
  • Strong full stack engineering with Python/Django and React (JavaScript/TypeScript)Experience building REST APIs with Django REST Framework.
  • AWS hosting and deployment experience, plus GitHub based CI/CD.
  • Automated testing with pytest and Cypress or Playwright.
  • Technical leadership in a multidisciplinary agile team, including code review and setting standards.
  • Experience extending an existing codebase and designing for reuse without breaking the core.
  • Comfortable working to the GOV.UK Service Manual and accessibility standards (WCAG 2.2 AA).
  • Desirable: event driven architecture such as AWS SQS/SNS, Datadog monitoring and observability, CRM or shared data layer experience, and central government delivery experience.
  • Minimum of 10 years' experience in full stack development, including technical leadership.

About Us

FDM is an award-winning global leader in tech and business talent solutions, backed by more than 35 years of industry experience. We have centres across Europe, North America, and Asia-Pacific, and a global workforce of over 2500 employees. FDM has shown exponential growth throughout the years, firmly establishing itself as an award-winning employer, currently listed on the FTSE4Good Index and as a 2026 Financial Times UK ‘Best Employer’.

Diversity and Inclusion

FDM Group is an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, colour, religion, sex, sexual orientation, national origin, age, disability, veteran status or any other status protected by federal, provincial or local laws.


Why join us
  • Career coaching, mentoring and access to upskilling throughout your entire FDM career
  • Assignments with global companies and opportunities to work abroad
  • Opportunity to re-skill and up-skill into new areas, develop non-linear career paths and build a skillset within your field
  • Annual leave and work-place pension

Skills

Software Engineering - JAVASCRIPT, Software Engineering - PYTHON, Unsure - FORCE.COM, Software Engineering - REST, Software Engineering - ARCHITECTURE

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