Senior/Principal Software Engineer

Company: Gemba Advantage
Apply for the Senior/Principal Software Engineer
Location: London
Job Description:

Please note: This role requires applicants to hold active, or recently active, SC or DV clearance.

Check out the role overview below If you are confident you have got the right skills and experience, apply today.

This role also requires applicants to be willing to work on-site up to 4 days per week.

At Gemba Advantage, we build secure, user-centred digital products for critical public sector organisations across the UK. Our teams work on complex, high-impact systems, the kind that have to be secure, scalable, and actually usable by the people who rely on them.

We’re looking for Senior and Principal Engineers who want to shape meaningful systems, influence technical direction, and work alongside capable people who care about doing the job properly. You’ll help design and build modern cloud‑native services, guide engineering standards, and solve genuinely hard problems with our customers.

The role

  • Design and deliver secure, scalable software in small agile teams
  • Stay hands‑on while shaping architecture and technical direction
  • Set engineering standards and mentor others
  • Work directly with customers to solve complex problems

You’ll likely bring

  • Active, or recently active, SC or DV clearance (essential)
  • Strong experience delivering production systems in complex environments
  • Depth in at least one modern language (Java, TypeScript, Python, Go etc.)
  • Cloud/container experience and a security‑first mindset
  • Confidence influencing technical decisions and improving teams

Tech we commonly use

  • React / Angular

Why join Gemba?

Gemba is built upon four core values that we believe make Gemba a great place to work:

  • Our people are our most important asset and we prioritise their needs accordingly
  • We succeed and fail as a team not as individuals.
  • We do the right thing and we do the thing right. xwzovoh
  • We maintain an overwhelming focus on the customers’ needs.

Posted: March 13th, 2026