Senior Java Developer (Rxjava, Java)

VARITE is looking for a qualified Software Development Engineer III for one of its clients located in Welwyn Garden City, UK.

WHAT THE CLIENT DOES?

Our client is a global IT consulting and digital transformation company specializing in software development, cloud, data & AI, DevOps, Agile transformation, and technology consulting. We partner with organizations worldwide to deliver innovative, scalable, and high-quality solutions that accelerate digital growth and business excellence.

WHAT WE DO?

Established in the Year 2000, VARITE is an award-winning minority business enterprise providing global consulting & staffing services to Fortune 1000 companies and government agencies. With 850+ global consultants, VARITE is committed to delivering excellence to its customers by leveraging its global experience and expertise in providing comprehensive scientific, engineering, technical, and non-technical staff augmentation and talent acquisition services.

HERE'S WHAT YOU’LL DO:

Job title: Software Development Engineer III (Customer Fulfilment)

Location: Welwyn Garden City, UK (Hybrid)

Contract: 6 Months

We are in the process of building and rolling out our next-generation, dynamic, scalable, and resilient Fulfilment Platform. This platform supports both manual and robotic-powered fulfilment across geographies and product categories including Grocery, GM, and Fashion.

The Fulfilment Point System (FPS) enables fulfilment centres to efficiently pick, marshal, and dispatch orders with real-time visualization and workflow management.

Key Responsibilities:

• Design and build high-performance distributed applications
• Develop APIs and microservices
• Improve scalability, reliability, and system performance
• Write clean, maintainable, well-documented code
• Troubleshoot complex production issues
• Mentor junior engineers and collaborate cross-functionally

WHAT YOU’LL NEED TO WIN:

Required Experience:

• Product development experience using Agile methodologies
• Strong hands-on experience with distributed Java systems
• Experience in globally distributed teams is an advantage

Technical Skills:

• Java, Spring Boot
• Kafka, PostgreSQL, Couchbase
• CI/CD using Azure Pipelines or GitHub Actions
• Azure Cloud
• Performance-oriented system design and event-driven architectures.