Senior Java Architect — Spring Boot, Kafka & Cloud

Luxoft; Greater London; Hybrid; GBP 60,000 - 90,000; Full time

Job summary

DXC Luxoft Financial Services is seeking a skilled Java developer to upgrade and modernize core applications for large financial institutions. The role focuses on Spring Boot migrations, distributed systems modernization, and resilient microservice design.

You will work with Kafka-based integrations, cloud-enabled architectures, and collaborate across QA, DevOps and architecture teams to ensure high performance and security. Strong Java and tooling experience is essential for success.

Qualifications

• Must have strong commercial Java development experience.
• Solid knowledge of Java and the wider Java ecosystem.
• Experience with Spring and/or Spring Boot.
• Experience managing dependencies using Maven and/or Gradle.
• Experience upgrading Java libraries, frameworks and third-party dependencies.
• Experience identifying, investigating and remediating software security vulnerabilities.
• Good understanding of secure coding practices and common application security risks.
• Strong debugging, troubleshooting and problem-solving skills.
• Experience working with Git and CI/CD pipelines.
• Experience working with established or legacy Java applications.
• Experience assessing the impact of upgrades and remediation changes on existing systems.
• Experience with unit and integration testing.

Responsibilities

• Upgrade legacy applications to modern Spring Boot versions and related components.
• Decommission and replace Hazelcast across distributed systems.
• Refactor applications toward stateless, scalable microservices and cloud readiness.
• Enhance integrations using Kafka-based event-driven architecture.
• Collaborate with QA, DevOps, and architecture teams on migration and rollout strategy.

Skills

Strong commercial Java development

Java ecosystem

Spring / Spring Boot

Maven / Gradle

Upgrade Java libraries/frameworks

Secure coding practices

Security vulnerability remediation

Git and CI/CD pipelines

Legacy Java applications

Unit and integration testing

Job description

DXC Luxoft Financial Services is seeking a skilled Java developer to upgrade and modernize core applications for large financial institutions. The role focuses on Spring Boot migrations, distributed systems modernization, and resilient microservice design.

You will work with Kafka-based integrations, cloud-enabled architectures, and collaborate across QA, DevOps and architecture teams to ensure high performance and security. Strong Java and tooling experience is essential for success.