Software Engineer

Vertex Sigma Software; Indiana; On-site; USD 110,000 - 160,000; Full time

Job summary

Vertex Sigma Software is seeking a Software Engineer to design and deliver scalable, cloud-native microservices within our Connected Services platform. You own the full software lifecycle from architecture through deployment.

Design RESTful and event-driven microservices using Java 17+ and Spring Boot 3, integrate with IoT devices and third-party APIs, and build real-time data pipelines. Collaborate with product and DevOps on CI/CD with Docker, Kubernetes, and Helm; participate in architecture

Qualifications

• 5+ years with Java and the Spring Boot ecosystem; Java 17+ preferred.
• 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.

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

Skills

Java

Spring Boot

Spring Cloud

Spring Security

Spring Data JPA

Kafka

RabbitMQ

OAuth 2.0 / JWT

SQL / NoSQL

PostgreSQL

MongoDB

Redis

Docker

Kubernetes

Cloud (AWS/GCP/Azure)

Open-source contributions

Tools

OpenAPI/Swagger

Istio / Linkerd

CI/CD tooling

Job description

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

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