Senior Full Stack Java Developer

Quick Facts

• Senior Full Stack Java Developer (contract)
• Hybrid in Lansing, MI; only locals
• 9-month contract with extension; W-2 employment (no C2C/1099)

Description

You will design, develop, and maintain enterprise full-stack applications using Java (Spring Boot) for the back end and modern JavaScript frameworks such as React or Angular for the front end. The role emphasizes scalable, secure, high-performance solutions, REST API integration, and improving delivery through CI/CD, containerization, and automated testing.

Responsibilities

• Design, develop, and maintain full stack applications (Java/Spring Boot back end; React/Angular front end)
• Lead scalable, secure, high-performance solutions using Java-based technologies
• Collaborate with product owners, architects, and cross-functional teams to deliver business-aligned solutions
• Build and consume RESTful APIs and integrate third-party services
• Create responsive UI components and ensure a seamless user experience across devices
• Contribute to DevOps: CI/CD, Docker/Kubernetes containerization, and automated testing
• Participate in Agile/Scrum ceremonies and execute work via Jira user stories
• Analyze, design, document, implement, and test software solutions based on detailed user stories
• Ensure accurate time tracking for billing and reporting
• Provide knowledge transfer and mentorship for the team

Requirements

• 10+ years of professional software/application development with strong Java expertise
• 3+ years with microservices architecture
• 3+ years with Docker and orchestration (OpenShift or Kubernetes)
• Strong distributed systems and high-availability design experience
• Strong REST API and service integration pattern knowledge
• CI/CD experience and secure application design
• Authentication/authorization experience: OAuth 2.0, SAML, OpenID Connect, JWT
• Hands-on full stack experience across front-end and back-end
• Strong Java/Spring/Spring Boot plus Oracle and Hibernate/JPA proficiency
• Front-end skills: Angular and/or React; HTML5, CSS3, JavaScript, TypeScript
• Relational and NoSQL database experience
• Message queuing experience (IBM MQ or equivalent)
• Agile/Scrum familiarity and ability to thrive in iterative development
• DevOps practices/tools: Git, Jenkins, Docker, Kubernetes, Maven
• Expert Core Java: multithreading, collections, concurrency, JVM performance tuning
• Automated testing and TDD (JUnit, Selenium; Playwright desirable)

Benefits

• 9-month contract with extension opportunity
• Hybrid working model in Lansing, MI (local candidates only)
• W-2 employment; no C2C/1099