Senior Java Backend Engineer

Overview

Hybrid 4 onsite / 1 work from home in Greenwood Village, CO

The organization is hiring a backend engineer to implement Java 17 and Spring Boot services, design REST and Graph

QL APIs, and support data-intensive workflows across Postgre

SQL and Apache Cassandra. The role will contribute to event‑driven architectures using Kafka and improve performance with Redis while ensuring high-quality, tested code and close collaboration with cross‑functional teams.

Due to client requirements, applicants must be willing and able to work on a w2 basis. For our w2 consultants, we offer a great benefits package that includes Medical, Dental, and Vision benefits, 401k with company matching, and life insurance.

Rate: $40.00 to $50.00/hr. w2

• Analyze existing Java backend services to understand business logic and data flows.
• Implement APIs using Java 17 and Spring Boot within a shared backend platform.
• Design and build Graph
  
  QL APIs aligned with frontend requirements.
• Develop and maintain RESTful APIs.
• Work with Postgre
  
  SQL and Apache Cassandra data stores.
• Support data migration and legacy system coexistence strategies.
• Implement event‑driven workflows using Kafka.
• Use Redis for caching and performance optimization.
• Write unit and integration tests to ensure production‑ready code.
• Follow architectural patterns, coding standards, and review processes.
• Collaborate with the Backend Architect, frontend, QA, and Dev Ops teams.

• 5+ years of backend development experience.
• Strong understanding of microservices or modular backend architecture.
• Expertise in Java 17, Spring Boot, and Spring Framework.
• Hands‑on experience designing Graph
  
  QL APIs.
• Experience developing RESTful APIs.
• Strong experience with Postgre
  
  SQL.
• Working knowledge of Apache Cassandra.
• Experience with Kafka‑based event‑driven systems.
• Experience using Redis.
• Strong communication and collaboration skills.
• Docker‑based application development (preferred).
• Maven builds and dependency management (preferred).
• AWS experience, especially S3 (preferred).
• Strong unit and integration testing experience (preferred).
• Kubernetes fundamentals (preferred).
• Splunk or similar logging and monitoring tools (preferred).
• Experience with legacy system migration or modernization (preferred).