Senior Java Developer

LA International; Greater London; Hybrid; GBP 110,700 - 166,050; Full time

Benefits offered by this job

Hybrid work model

Job summary

LA International seeks a Senior Java Developer for a 12-month contract in London. Role is hybrid with up to one day onsite weekly, on a market-rate daily basis via Umbrella.

You’ll design, build and maintain cloud-native applications using Java, Spring Boot, and microservices, with Kafka for event-driven flows and AWS with Docker/Kubernetes (EKS). Responsibilities include RESTful API design, IaC with Terraform, CI/CD pipelines with GitHub, and performance monitoring using New Relic.

Qualifications

• Strong hands-on Java development experience with Spring Boot.

Responsibilities

• Develop, maintain and enhance cloud-native Java applications using Spring Boot and microservices.

Skills

Java 21/25

Spring Boot

Microservices

Apache Kafka

AWS

Docker

Kubernetes (EKS)

REST APIs

Terraform

Databases (MongoDB/PostgreSQL/Redis)

CI/CD GitHub

Monitoring (New Relic)

Tools

Docker

Kubernetes

Job description

Senior Java Developer

12 Month contract initially + Extensions

Based: Hybrid. Max 1 day p/w onsite in London

Rate: £Market rates p/d - (via Umbrella company)

We have a great opportunity with a world leading organisation where you will be provided with all of the support and development to succeed. A progressive organisation where you can really make a difference.

Key Responsibilities

• Develop, maintain, and enhance cloud-native applications using Java, Spring Boot, and microservices architecture.
• Design and implement event-driven solutions using Apache Kafka to support scalable and resilient business processes.
• Build, deploy, and support applications on AWS using containerized platforms including Docker and Kubernetes (EKS).
• Design, develop, and maintain RESTful APIs to enable seamless integration across enterprise systems.
• Implement Infrastructure as Code using Terraform and contribute to automation and environment management.
• Build and maintain CI/CD pipelines using GitHub and modern DevOps practices.
• Optimize application performance, availability, and scalability using monitoring and observability tools including New Relic and Bosun.
• Collaborate with cross-functional teams to deliver secure, high-quality software solutions aligned with business objectives.

Key Skills & Experience

• Strong hands‑on experience with Java 21/25 and Spring Boot.
• Proven experience designing and implementing microservices-based applications.
• Hands‑on experience with Apache Kafka and event‑driven architectures.
• Strong experience developing REST APIs and distributed systems.
• Experience with AWS cloud services and container orchestration platforms such as Kubernetes (EKS).
• Hands‑on experience with Docker and containerized application deployment.
• Experience managing infrastructure using Terraform and Infrastructure as Code practices.
• Strong knowledge of MongoDB, Mongo Atlas, PostgreSQL, and Redis.
• Experience with CI/CD pipelines and source control using GitHub.
• Experience with application monitoring, troubleshooting, and performance optimisation using tools such as New Relic and Bosun.

Desirable skills/knowledge/experience

• Experience working within large‑scale retail or eCommerce environments.
• Knowledge of cloud‑native architecture patterns and distributed system design.
• Exposure to AI‑assisted engineering tools and modern software development practices.
• Experience with performance testing and non‑functional testing methodologies.
• Understanding of security best practices for cloud and microservices‑based applications.
• Experience mentoring developers and contributing to engineering standards and best practices.
• Familiarity with Agile, Scrum, and DevOps delivery methodologies.

We are committed to fostering an inclusive, equitable and accessible workplace where everyone feels valued and supported. We welcome applications from all individuals, regardless of background or identity, and we encourage candidates who may not meet every listed requirement to still apply. If you require any adjustments or support during the recruitment process, please let us know and we will work with you to ensure a fair and accessible experience.