Senior Java Engineer – Greenfield FinTech (London)

JUXT; Greater London; On-site; GBP 70,000 - 120,000; Full time

Job summary

JUXT is seeking Java developers of all levels to join London teams working on long‑term greenfield projects for a leading financial institution. You’ll be part of small, high‑calibre teams delivering strategic rebuilds and modernisation, replacing legacy systems with cloud‑aligned Java tech.

This role focuses on writing great code, solving hard problems, and shaping architecture end‑to‑end. Expect collaboration on greenfield builds with autonomy and real technical input in a trusted, friendly

Qualifications

• Very good command of Java + Spring Framework.
• Knowledge and experience with OpenID Connect.
• Experience with databases (esp. PostgreSQL).
• Good understanding of Kubernetes environments.

Responsibilities

• Join small, high‑calibre teams delivering strategic rebuilds and modernisation projects.
• Write high‑quality code and shape architecture from the ground up.
• Work on greenfield, strategic rebuilds with autonomy and end‑to‑end ownership.
• Collaborate within financial institutions on large‑scale distributed systems.

Skills

Java

Spring Framework

OpenID Connect

PostgreSQL

Kubernetes

Job description

JUXT is seeking Java developers of all levels to join London teams working on long‑term greenfield projects for a leading financial institution. You’ll be part of small, high‑calibre teams delivering strategic rebuilds and modernisation, replacing legacy systems with cloud‑aligned Java tech.

This role focuses on writing great code, solving hard problems, and shaping architecture end‑to‑end. Expect collaboration on greenfield builds with autonomy and real technical input in a trusted, friendly