Explore Group
Greater London / Global
GET
The Big Jobsite
You have blocked notifications
Oops! You have blocked notifications. Click here for more info
You have blocked notifications, please check your browser settings.
You're currently subscribed to job notifications
Subscribe to notifications
You will no longer receive notifications
Greater London / Global
Senior Java Engineer (Contract) – Greenfield Fintech Platform
Location: London / Hybrid (1 day/week in office)
About the Role We are seeking an exceptionally skilled Senior Java Contractor to join a high-impact team building a next-generation algorithmic trading engine. You will work on low-latency, high-throughput microservices, owning features from architecture design to production deployment.
Key Responsibilities
Architect, build, and optimize scalable back-end services using Java 21+ and Spring Boot.
Partner with product and risk teams to deliver resilient event-driven architectures.
Drive engineering best practices, including TDD, automated CI/CD pipelines, and rigorous code reviews.
Refactor legacy components to improve latency and system throughput.
Required Experience
Core Java: 7+ years of deep expertise in Java (Java 17/21 features, memory management, multithreading, and concurrency).
Frameworks: Extensive experience with Spring Boot, Spring Cloud, and Hibernate/JPA.
Architecture: Proven track record with microservices, event-driven design (Kafka, RabbitMQ), and RESTful APIs.
Database & Caching: Strong relational database knowledge (PostgreSQL) alongside Redis or Hazelcast.
Cloud & DevOps: Hands-on experience with AWS (EKS, Lambda, S3), Docker, Kubernetes, and Terraform.
Nice to Have
Prior domain experience in banking, fintech, or high-frequency trading.
Familiarity with reactive programming (Project Reactor, RxJava).
#J-18808-Ljbffr
Greater London / Global
Whitehall / Global
Whitehall / Global
, England, United Kingdom / Global
Greater London / Global
GB / Global