Senior Java Software Engineer

Senior Java Developer (Kafka / AWS / Kubernetes)

Location: Canary Wharf, London – 3 days onsite / 2 days remote

Rate: £750–£775 per day (Inside IR35)

Contract Length: 12 Months

The Role

We are seeking an experienced Senior Java Developer to join a high-performing engineering team delivering critical platforms within a fast-paced financial services environment. This role is ideal for a hands-on engineer who thrives in modern cloud-native architectures and has deep domain knowledge within Retail Banking, Payments, or FinTech (mandatory).

You’ll be working on large-scale, distributed systems handling high-volume transactions, helping to design, build, and enhance resilient microservices and event-driven platforms.

Key Responsibilities

• Design and develop scalable, high-availability Java microservices
• Build and maintain event-driven architectures using Kafka
• Develop and deploy cloud-native solutions on AWS
• Containerise and orchestrate services using Kubernetes
• Collaborate with architects, DevOps, and product teams to deliver end-to-end solutions
• Ensure code quality through best practices, testing, and code reviews
• Contribute to system design, performance tuning, and reliability improvements

Mandatory Experience

• 10+ years of commercial software engineering experience
• Proven experience within Retail Banking, Payments, or FinTech
• Expert-level Java development (Java 11+ preferred)
• Strong experience with Apache Kafka
• Hands-on experience with AWS (e.g., ECS/EKS, Lambda, S3, RDS, etc.)
• Experience with Kubernetes and containerisation (Docker)
• Strong background in microservices and distributed systems
• Experience working in Agile delivery environments

Desirable Skills

• Infrastructure as Code (Terraform or CloudFormation)
• CI/CD pipelines and DevOps practices
• Observability tooling (Prometheus, Grafana, ELK, etc.)
• Experience with high-throughput, low-latency systems

Working Arrangement

• Hybrid: 3 days per week onsite in Canary Wharf, 2 days remote
• Contract: 12 months
• Rate: £750–£775 per day (Inside IR35)