Senior Full-Stack Engineer: Java, Spring Boot & React

Sage IT; Charlotte (NC); On-site; USD 140,000 - 190,000; Full time

Job summary

Sage IT in Charlotte, NC is seeking a Senior Full Stack Engineer (Java, Spring Boot & React) for a permanent on-site role. You will own end-to-end architecture, implement backend microservices, and deliver scalable web applications for enterprise clients.

Responsibilities include designing and deploying RESTful APIs, ensuring performance, applying security standards, and mentoring junior engineers. Visa status must be confirmed, and on-site availability is required.

Qualifications

• Bachelor’s or Master’s degree in Computer Science, Software Engineering, Information Technology, or a related technical discipline.
• Progressive professional hands-on experience in full-stack software development with Java, Spring Boot, and React.
• Strong, demonstrable operational programming proficiency in Java, Spring Framework, Spring Boot, and microservices architecture.
• Comprehensive working knowledge and practical hands-on experience with modern frontend frameworks (React, Redux, JavaScript/TypeScript, HTML5, CSS3).
• Solid practical grasp of relational databases (PostgreSQL, MySQL, Oracle) and ORM frameworks (Hibernate/JPA).
• Proven expertise in building responsive web applications, managing state, and securing REST APIs.
• Strong analytical problem-solving skills and effective stakeholder communication capabilities.
• Mandatory legal work authorization and physical availability for professional operations in Charlotte, North Carolina.

Responsibilities

• Design, develop, test, and deploy scalable enterprise full-stack applications utilizing Java, Spring Boot, and React.
• Architect and implement high-performance RESTful APIs, microservices, and reactive frontend component libraries.
• Optimize frontend rendering performance, state management (Redux/Context), and backend database query efficiency.
• Conduct rigorous code reviews, unit testing (JUnit, Jest), integration testing, and performance profiling.
• Collaborate proactively with cross-functional product management, UI/UX design, and QA engineering squads.
• Enforce strict adherence to enterprise security standards, OWASP guidelines, and modern software design patterns.
• Investigate production incidents, diagnose complex full-stack software bugs, and execute rapid root-cause analysis (RCA).
• Maintain meticulous technical documentation, API specifications, system architecture diagrams, and version control repositories.
• Participate actively in sprint planning, architectural design sessions, and technical roadmap discussions.
• Provide technical leadership and mentorship to junior full-stack engineers across project teams.

Skills

Java

Spring Boot

React

Redux

Education

Bachelors or Masters in CS/SE

Tools

Docker

Kubernetes

Jenkins

GitLab CI

Job description

Sage IT in Charlotte, NC is seeking a Senior Full Stack Engineer (Java, Spring Boot & React) for a permanent on-site role. You will own end-to-end architecture, implement backend microservices, and deliver scalable web applications for enterprise clients.

Responsibilities include designing and deploying RESTful APIs, ensuring performance, applying security standards, and mentoring junior engineers. Visa status must be confirmed, and on-site availability is required.