Java Backend Engineer

Job title: Java Backend Engineer

Location: Bentonville, AR

Duration: Long term Contract

Job Description:

What you'd own: one or more services in a microservices architecture spanning REST APIs, event-driven consumers, and an API gateway

Must have:

• Java (recent LTS — e.g. Java 17/21)
• Spring Boot 3.x (REST controllers; reactive/WebFlux for gateway and high-throughput query-service work; dependency injection; auto-configuration patterns)
• Apache Kafka — consumer group patterns, event/CDC-style ingestion, producer patterns
• A NoSQL/document database (e.g. Azure Cosmos DB, MongoDB, DynamoDB) — including change-feed/streaming-style read patterns, not just basic CRUD
• Working knowledge of at least one relational database (e.g. Oracle, SQL Server/Azure SQL) via JDBC
• Maven or Gradle build tooling, multi-module dependency management
• Comfort designing and maintaining services that support multiple markets/regions without hardcoded assumptions baked into business logic
• Experience with a CI/CD pipeline and Kubernetes-based deployment as a routine part of the development workflow, not an occasional platform-team handoff

Nice to have:

• API gateway experience (e.g. Spring Cloud Gateway)
• Node.js/Express, for teams running a polyglot backend (e.g. GraphQL services, internal tooling servers)
• In-process caching (e.g. Caffeine) and/or distributed caching (e.g. Redis)
• Secrets management tooling (e.g. HashiCorp Vault)