What are the responsibilities and job description for the Software Engineer position at Sigma Software?
Overview
We are looking for a skilled Software Engineer to design and deliver scalable, cloud-native microservices within our Connected Services platform. You will own the full software lifecycle — from architecture through deployment — building robust APIs and event-driven systems that power real-time device and data integrations.
Responsibilities
Design and develop RESTful and event-driven microservices using Java 17 and Spring Boot 3
Build and maintain integrations with IoT devices, third-party APIs, and connected platforms
Implement messaging pipelines with Kafka or RabbitMQ for real-time data streaming
Write clean, testable code with JUnit, Mockito, and integration test suites
Collaborate with product and DevOps on CI/CD pipelines using Docker, Kubernetes, and Helm
Participate in architecture reviews and define best practices for the team
Requirements
Required Skills
5 years with Java and the Spring Boot ecosystem; Java 17 preferred
Strong knowledge of Spring Cloud, Spring Security, and Spring Data JPA
Experience with Kafka, RabbitMQ, or similar messaging technologies
Familiarity with OAuth 2.0, JWT, and API security patterns
Proficient with SQL/NoSQL databases, including PostgreSQL, MongoDB, and Redis
Hands-on with Docker and Kubernetes in cloud environments (AWS, GCP, or Azure)
Contributions to open-source Java or Spring Boot projects
Nice to Have
Experience with MQTT, AMQP, or CoAP for IoT device communication
Knowledge of OpenAPI / Swagger specification and contract-first design
Exposure to service mesh technologies, including Istio and Linkerd, and observability tooling