Senior Software Engineer

Onsite 3 days per week in Holtsville, NY

Pay: $73-$77/hour. W2 Only.

Sponsorship is not available for this position.

Duration: 6 months with extensions thereafter based on client need and performance.

• Go and Java programming
• Understanding of REST APIs
• Experience with messaging brokers like MQTT and Kafka
• Database experience
• Ideally Postgres
• GORM and JPA
• Docker and docker-compose (K8s would be a plus)
• Knows how to write unit tests

We are looking for a Senior Software Engineer with strong experience in Go and Java to design and build scalable backend services. You will work on API-driven systems that integrate with messaging platforms such as MQTT and Kafka
, interact with relational databases (ideally PostgreSQL
), and run in containerized environments using Docker
. This role involves hands‑on development, technical leadership, and collaboration across teams.

• Design, develop, and maintain backend services using Go and Java
• Build and consume RESTful APIs
  , ensuring scalability, reliability, and security
• Integrate and manage messaging brokers such as MQTT and Kafka
• Design and optimize database schemas and queries, primarily using PostgreSQL
• Implement data access layers using GORM (Go) and JPA (Java)
• Containerize applications using Docker and docker-compose
• Collaborate on deployment and orchestration strategies (Kubernetes is a plus)
• Write and maintain unit tests to ensure code quality and reliability
• Participate in code reviews, architectural discussions, and technical decision-making
• Mentor junior engineers and promote best practices across the team

• Bachelor's degree with 4+ years of relevant experience is required. Strong professional experience with Go and Java is mandatory.
• Solid understanding of REST API design and implementation
• Hands‑on experience with messaging systems such as MQTT and Kafka
• Experience working with relational databases;
  PostgreSQL preferred
• Practical knowledge of GORM and JPA for ORM-based data access
• Experience using Docker and docker-compose in development and deployment
• Proven ability to write unit tests and maintain testable code
• Strong problem-solving and debugging skills