Senior Java Engineer - FinTech Real-Time Payments (Hybrid)

X4 Technology; Greater London; Hybrid; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Training & progression

Wellbeing initiatives

Lifestyle benefits

Job summary

X4 Technology is seeking a Senior Software Engineer to join a market‑leading fintech platform in London. You will work on real‑time payment infrastructure, integrating scalable, resilient Java applications within a collaborative product engineering team.

You’ll contribute to architectural decisions, build high‑quality reusable code, and help shape future capabilities while embracing CI/CD, Agile delivery, and cutting‑edge tech such as Kafka, Spring, and distributed systems.

Qualifications

• Proficiency in Java 11+ and Spring.

Responsibilities

• Develop and maintain scalable, resilient Java services in a FinTech platform.
• Collaborate with product engineering to drive architectural decisions and best practices.

Skills

Java 11+

Spring framework

Kafka

Distributed systems

CI/CD

Agile delivery

High availability

FinTech/payments experience

Tools

AKKA

Docker

Kubernetes

MongoDB

Angular

Ansible

Job description

X4 Technology is seeking a Senior Software Engineer to join a market‑leading fintech platform in London. You will work on real‑time payment infrastructure, integrating scalable, resilient Java applications within a collaborative product engineering team.

You’ll contribute to architectural decisions, build high‑quality reusable code, and help shape future capabilities while embracing CI/CD, Agile delivery, and cutting‑edge tech such as Kafka, Spring, and distributed systems.