Job Description
Senior Java Developers x 5 – Banking
Contract: 12 months
Rate: £775 per day (Inside IR35)
Location: 3 days onsite in Canary Wharf, 2 days elsewhere in London (hybrid)
Overview
We are seeking an experienced Senior Java Developer with strong banking / financial services experience to join a high-profile programme delivering mission-critical trading and core banking systems. You will work in a fast-paced, agile environment building highly scalable and resilient backend services.
This role suits a senior engineer comfortable working in complex, regulated environments and contributing to architecture and technical direction.
Key Responsibilities
* Design, build and maintain high-performance Java microservices
* Work on low-latency, high-throughput systems in a banking environment
* Contribute to solution architecture and technical design
* Collaborate with traders, quants, product owners and DevOps teams
* Improve system performance, resilience and scalability
* Write clean, testable, maintainable code following best practices
* Support CI/CD pipelines and cloud-native deployments
* Participate in code reviews and mentor junior developers
* Ensure solutions meet security and regulatory requirements
Required Skills & Experience
* Strong Java development experience (Java 11/17+)
* Spring Boot / Spring ecosystem
* Microservices architecture
* REST APIs and distributed systems
* Multithreading and concurrency
* SQL and NoSQL databases (Oracle, PostgreSQL, MongoDB etc.)
* Messaging systems (Kafka, MQ or similar)
* CI/CD pipelines (Jenkins, GitLab CI, etc.)
* Containerisation (Docker, Kubernetes)
* Cloud exposure (AWS / Azure / GCP)
Banking / Finance Experience (Essential)
* Experience working in investment banking, trading, or capital markets
* Understanding of:
* Market data / pricing / risk / payments / trading systems
* Regulatory and security considerations
* High-availability production systems
Desirable Skills
* Low-latency / high-frequency trading systems
* Event-driven architecture
* Infrastructure as Code (Terraform)
* Observability tools (Prometheus, Grafana, ELK)
* Agile / Scrum environment experience
Soft Skills
* Strong stakeholder communication
* Ability to work in large enterprise environments
* Proactive and solution-oriented mindset
* Experience mentoring or leading developers
Working Model
* Hybrid: 3 days onsite in Canary Wharf, 2 days elsewhere in London
* Long-term programme (12-month contract with likely extensions)
* Inside IR35 engagement