Senior Java Engineer - Apache Flink | Kafka

Korn Ferry; Greater London; On-site; GBP 88,000 - 115,000; Part time

Job summary

Korn Ferry seeks a highly experienced Senior Java Engineer to join a major financial services client in the UK. You will design and build scalable distributed systems, real-time data processing with Flink/Kafka, and RESTful services using Spring Boot and microservices.

Expect Kubernetes, Docker, Terraform, and Azure-based deployments, with a focus on security and high availability. The role emphasizes CQRS/Event Sourcing, low-latency design, and comprehensive CI/CD automation in a cloud-native

Qualifications

• Extensive commercial Java development experience in enterprise environments.
• Strong hands-on Spring Boot and microservices design and implementation.
• Experience with real-time streaming, distributed systems and low-latency designs.
• Knowledge of cloud-native deployments using Kubernetes, Docker and Terraform.
• Familiarity with Azure cloud services and security (OAuth, IAM) practices.
• CI/CD tooling and automated testing in complex back-end pipelines.

Responsibilities

• Design, develop and optimise highly scalable distributed and event-driven systems.
• Build real-time streaming and data-processing solutions with Flink and Kafka.
• Develop enterprise Java applications using Spring Boot and microservices.
• Ensure fault-tolerance for high-throughput environments and implement CQRS/Event Sourcing.
• Develop and optimise REST APIs and backend services; deploy on Kubernetes/Azure.
• Improve performance, resilience, security, and availability of platforms.

Skills

Java

Spring Boot

Microservices

Distributed systems

Kafka

Apache Flink

REST APIs

Kubernetes

Docker

Terraform

Azure

OAuth

IAM

CI/CD

Testing

Tools

Kubernetes

Docker

Terraform

Azure

Kafka

Apache Flink

Job description

Contract: 12 months

Rate: Up to £550 per day inside IR35

We are looking for a highly experienced Senior Java Engineer to join a major financial services organisation, working on highly scalable, mission-critical platforms supporting real-time data processing and distributed systems.

Key Responsibilities

• Design, develop and optimise highly scalable distributed and event-driven systems.
• Build real-time streaming and data-processing solutions using Apache Flink and Kafka.
• Develop enterprise applications using Java, Spring Boot and microservices architectures.
• Design fault-tolerant solutions capable of operating in high-throughput, mission-critical environments.
• Apply architectural patterns including CQRS and Event Sourcing.
• Develop and optimise REST APIs and backend services.
• Deploy and operate applications using Kubernetes, Docker and Terraform.
• Work within Azure/cloud-native environments.
• Improve system performance, resilience, scalability and availability.
• Implement appropriate security controls including OAuth and identity/access management.
• Extensive commercial Java development experience, ideally including Java 17/21.
• Strong hands-on Spring Boot and microservices experience.
• Strong experience designing and developing distributed systems.
• Hands-on Apache Flink experience.
• Strong Apache Kafka and event-driven architecture experience.
• Experience building real-time/stream-processing platforms.
• Understanding of high-throughput, low-latency and fault-tolerant system design.
• Kubernetes and Docker experience.
• Experience working with Microsoft Azure.
• CI/CD and automated testing experience.

About Korn Ferry

Korn Ferry unleashes potential in people, teams, and organizations. We work with our clients to design optimal organization structures, roles, and responsibilities. We help them hire the right people and advise them on how to reward and motivate their workforce while developing professionals as they navigate and advance their careers. To learn more, please visit Korn Ferry at www.Kornferry.com