Senior/Principal Software Engineer (SC/DV) – On‑Site 4 Days

Gemba Advantage; Greater London; Hybrid; GBP 70,000 - 100,000; Full time

Job summary

Gemba Advantage seeks Senior/Principal Software Engineers to design and deliver secure, scalable software in small agile teams in London. You’ll stay hands-on while shaping architecture, set engineering standards, and work directly with customers to solve complex problems.

The role requires active SC or DV clearance, willingness to work on-site up to 4 days per week, and a track record delivering production systems in complex environments. Hybrid London workplace with cloud-native tech.

Qualifications

• 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.

Responsibilities

• 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.
• Champion modern engineering practices (cloud, CI/CD, DevSecOps).

Skills

SC/DV clearance

Production systems

Java

TypeScript

Python

Go

Cloud experience

Kubernetes

Docker

AWS

CI/CD

GitOps

infrastructure as code

Security mindset

Technical influence

Tools

Java

TypeScript

Python

Go

React/Angular

AWS

Kubernetes

Docker

Elasticsearch

MongoDB

relational DBs

CI/CD

GitOps

infrastructure as code

Job description

Gemba Advantage seeks Senior/Principal Software Engineers to design and deliver secure, scalable software in small agile teams in London. You’ll stay hands-on while shaping architecture, set engineering standards, and work directly with customers to solve complex problems.

The role requires active SC or DV clearance, willingness to work on-site up to 4 days per week, and a track record delivering production systems in complex environments. Hybrid London workplace with cloud-native tech.