Principal Full Stack Software Engineer
Profile 29 · SE17SJ · posted 3 days ago
Going rate £58,200UK median £58,373
Home Office going rates from
Occupation
Going rate for this occupation: £58,200 · UK median pay £58,373
Home Office going rates from
Where this salary sits
- UK pay for this occupation
- This role£70,000 to £90,000stated · above the range ONS published
- Going rate£58,200
- UK median£58,373
View these figures as a table
| Percentile | Pay |
|---|---|
| 10th | £34,838 |
| 25th | £41,423 |
| 50th | £58,373 |
| 75th | £74,823 |
| Going rate | £58,200 |
| UK median | £58,373 |
Sponsorship
Sponsorship chance
Low
- Not matched to a licence on the register
- Occupation is eligible for Skilled Worker
- Salary clears the going rate
On the public records we hold, sponsorship for this role looks unlikely: not matched to a licence on the register, and occupation is eligible for Skilled Worker.
We hold the employer, the occupation, a stated salary and the advert's own wording.
Why
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Principal Software Engineer
Salary to £80k, poss. higher for their ‘Unicorn’ candidate Role can be based remotely, as long as you can occasionally travel to London for client work (travel expenses paid) - approx. once a month.
NB: Please only apply if you are a UK National & UK passport holder, have resided in the UK for the past 5 years and are prepared to go through UK SC Security Clearance. Proof of ID will be required prior to interview.
This role is with a growing is a technology consultancy. This is a hands-on principal engineering role: architecture ownership across multiple services, technical leadership across teams, and direct contribution to engineering standards and hiring. Their successful candidate will be writing code as well as setting direction - this is not a purely architectural or management position. Current delivery is a Java/Spring Boot microservices platform on AWS EKS, with a Next.js frontend and Camunda-based process orchestration.
Essential
Experience level: 10+ years minimum, principal or staff grade equivalent.
Backend and cloud:
Java 17 or 21, at expert level - modern language features
Spring Boot in depth: security, transaction management, async/reactive
Microservices architecture design - has designed services from scratch
Kubernetes and Docker in production (not local development use)
AWS, hands-on: EKS, Lambda, S3, RDS, EventBridge
CI/CD pipeline ownership
Automated testing discipline: JUnit, Mockito, integration testing, TDD or BDD
Frontend:
Held a lead or tech lead role on frontend development in React. Leadership must have been over React work itself.
Understands and has implemented FFE/BFE separation - the split between the presentation layer (components, styling, client state) and the frontend's own server-side tier (data aggregation for the UI, session and auth handling, server-side rendering, API route composition).
Leadership:
Architecture ownership across multiple systems
Cross-team technical leadership
Track record of influencing engineering standards, technology choices, or hiring
Evidence of growing other engineers
Security clearance: UK SC clearance required. Active clearance strongly preferred; eligible candidates considered - must be a UK national with 5+ years continuous UK residency.
Desirable:
Camunda 8 / BPMN process orchestration
Information from public records, not immigration advice.