Full-Stack Engineer (Java/React/Mobile) - 3711500

Lighthouse Technology Services is partnering with our client to fill their Full-Stack Engineer (Java/React/Mobile) position! This is a 3-4 month contract with possible extension and will be hybrid in Buffalo, NY or Wilmington, DE.

This role will be a W2 employee of Lighthouse Technology Services. No C2C or subcontracting arrangements will be considered.

What You’ll Be Doing:

• Design and build backend services using Java and Spring Boot to power application data and logic
• Develop user-facing features in React for web applications
• Build native mobile features using Swift UI for iOS and Jetpack Compose for Android
• Architect technical solutions for complex problems and drive implementation from concept to deployment
• Own end-to-end delivery of complex system components including design, development, testing, and documentation
• Mentor and guide other developers through code reviews and technical decision-making
• Collaborate with engineering teams and business stakeholders to translate requirements into technical solutions
• Write comprehensive documentation to ensure system maintainability and knowledge transfer
• Lead testing efforts and quality assurance processes to ensure robust, production-ready code
• Navigate and solve problems across interconnected systems and multiple platforms

• 6+ years of hands-on software development experience with demonstrated ability to design and architect solutions
• Strong proficiency across Java/Spring Boot microservices, React, and native mobile development (Swift UI and/or Jetpack Compose)
• Proven experience mentoring developers and leading technical decisions through code reviews and guidance
• Excellent communication skills with ability to present technical concepts to both engineering and non-technical stakeholders
• Demonstrated ability to work independently and take ownership of complex technical challenges
• Strong problem-solving skills for untangling complex, interconnected systems across multiple platforms
• Ability to manage multiple competing priorities and projects simultaneously
• Experience working in regulated environments such as banking is a plus