Full Stack Java/Python Engineer

Senior Full Stack Engineer (Java / Python)

Skills, Experience, Qualifications, If you have the right match for this opportunity, then make sure to apply today.

Contract Length - 6 months

Location - London (2 days onsite)

We are hiring a Senior Full Stack Engineer for a high-priority, ASAP-start contract role with a leading UK tech platform.

This is a hands-on senior engineering position within an established team building scalable, modern full stack systems.

The Role

You'll be a senior individual contributor working across backend and frontend systems, helping shape technical direction and confidently engaging with stakeholders to influence engineering decisions.

The core stack is Java-first, with increasing importance on Python-based services (including orchestration, agents, and modern AI/LLM integrations), alongside a strong React frontend.

This is not a leadership/management role, but you must be able to operate at senior level, challenge decisions, and drive engineering quality.

What you'll bring

We're looking for a strong Full Stack Engineer with recent commercial experience across:

Java + Spring Boot (core requirement, must be recent - ideally last 12-24 months)

Python (recent hands-on experience essential - services, orchestration, or AI/LLM work highly valued)

React (strong frontend experience is critical)

Experience building and delivering end-to-end full stack applications (frontend, backend, APIs)

Plus exposure to

Cloud platforms (AWS preferred; Azure/GCP also fine)

Containers (Docker, Kubernetes - Kubernetes preferred)

Data systems (Postgres / NoSQL; bonus for vector DBs, embeddings, semantic search)

Agile delivery environments

Engineering best practices (TDD, SOLID, XP principles)

Other Key Skills

Strong communication skills and stakeholder management

Ability to challenge technical decisions xwwtmva constructively

Senior-level ownership and accountability (IC role, not managerial)

Reliable, collaborative, and comfortable in fast-moving environments

?? Important notes

Must have recent Java AND Python experience (last 1-2 years ideal)

Frontend (React) experience is essential - full stack capability required

Candidates must be comfortable working onsite in London twice per week (Soho)

Please note - candidates must have full right to work in the UK. This is a fast moving requirement, and we are prioritising candidates who are immediately available or on short notice.