Full stack Java developer

Position: Full stack Java developer Location: Basildon, UK (On-Site) 6–12-month contract position Role Summary We are looking for Full‑Stack Engineers with a strong backend foundation to help scale an existing merchant risk and compliance platform for multi‑regional deployment. The role focuses on building and enhancing Java/Spring Boot microservices, integrating with AWS cloud services, and contributing to both server‑rendered and SPA‑based frontends. This is a hands‑on role in a high‑throughput, compliance‑sensitive environment, working closely with platform, data, and risk engineering teams. Core Responsibilities: * Design, develop, and scale Spring Boot microservices supporting MRV/MRD workflows * Build secure, well‑designed REST APIs integrated with frontend and downstream systems * Contribute to frontend development using Angular and/or server‑side templating (Thymeleaf) * Work with event‑driven and messaging systems to support real‑time risk processing * Develop and optimize data access using relational databases and caching layers * Collaborate across product, cloud, and risk teams to support multi‑region scaling * Support production readiness, performance tuning, and operational stability Required Skills & Experience * Strong hands‑on experience in Java and Spring Boot, including REST API development and microservice‑based architectures in production environments. * Experience working across the full stack, with practical exposure to frontend development using Angular or server‑side templating frameworks (e.g., Thymeleaf). * Working experience with AWS cloud services, such as ECS, API Gateway, S3, RDS/Aurora, or ElastiCache, in deploying and running backend services. * Solid understanding of API security concepts, including OAuth2, JWT, and secure service‑to‑service communication. * Hands‑on experience with relational databases (e.g., PostgreSQL) and familiarity with caching technologies such as Redis. * Working knowledge of event‑driven architectures, including experience consuming or producing messages using Kafka and/or Amazon SQS. * Experience working in regulated, risk‑sensitive, or high‑availability systems, with an emphasis on reliability, auditability, and scalability. Required Personal Skills: * Good communication skills and will be able to work within an international team * Self-motivated individual and creative thinker who will take ownership of tasks assigned. * Able to thrive in a fast-paced, high energy, demanding and team-orientated environment. * Excellent problem-solving skills * Strong communication skills both verbal and written. Capable of collaborating effectively across a variety of IT and Business groups, across regions and different roles * Good customer service skills. Ability to deal with difficult situations/individuals gracefully Skills Desired: * Exposure to fraud, risk, or compliance platforms * Familiarity with Node.js in support or integration roles * Experience with Snowflake or data lake architectures * Prior work in multi‑region or globally distributed systems