Sr. Java Backend Developer - Java, Spring Boot, Microservices, MongoDB, AWS

• Location: Irving, TX
• No subcontractors allowed to apply for this role. Only open for candidates who can work directly with us (no layers)

Based on the specific technical requirements and workflow you provided, here is a comprehensive Job Description for a Senior Backend Engineer (Microservices & Cloud).

Job Title: Senior Backend Engineer (Microservices & AWS)

Role Overview

We are looking for a seasoned Backend Developer to design, develop, and scale our core microservices architecture. You will be responsible for building resilient inter-service communication patterns, managing high-volume data processing, and ensuring the seamless onboarding of merchants via our portal. You will own the end-to-end lifecycle of services, from initial bootstrapping with Spring Initializr to production monitoring and defect resolution.

Key Responsibilities

• Microservices Architecture: Design and implement distributed systems using Spring Boot. You will handle inter-service communication using Feign Clients, ensuring optimal configuration for timeouts and retries.

• API Management & Security: Configure AWS API Gateway for request routing and implement secure authentication flows using OAuth2, managing token exchange and endpoint security.

• Data Strategy: Write complex queries for MongoDB (including lookup/aggregation for joins) and utilize DynamoDB for high-throughput, low-latency requirements. Manage relational data using Spring Data JPA and @Transactional management.

• Performance & Scaling: Design systems to handle millions of transactions using Spring Batch and multi-layered Caching mechanisms.

• Resiliency: Implement global error handling using @ControllerAdvice and ensure standardized HTTP response codes across the ecosystem.

• Cloud Operations: Deploy and manage services using AWS EKS (Kubernetes), Lambda, and S3.

• Observability: Take ownership of production health by using New Relic for monitoring and lead the debugging of complex production defects.

Technical Requirements