Senior Full-Stack Software Engineer

Senior Full-Stack Software Engineer Type – Full Time Location: Atlanta, GA Position Summary Certified Technical Experts, Inc. (CTE) is seeking an experienced Senior Full-Stack Software Engineer to design, develop, test, and maintain modern full-stack capabilities for mission-critical Federal public health applications. The Senior Full-Stack Software Engineer works across backend services, web interfaces, APIs, data access, and integrations while contributing to secure, maintainable, and automated software delivery. Key Responsibilities • Design and implement full-stack application features using modern backend and front-end technologies. • Develop and maintain Java and Spring Boot services, REST APIs, web interfaces, and data-access components. • Collaborate with Product Managers, UX specialists, analysts, QA engineers, DevSecOps engineers, and architects to deliver complete features. • Write clean, maintainable, testable, and secure code and participate actively in peer reviews. • Develop automated unit, integration, and API tests and support broader end-to-end testing. • Troubleshoot application defects, performance issues, integration problems, and production support escalations. • Contribute to modernization and refactoring of existing application components. • Support CI/CD pipelines, containerized deployments, release readiness, and operational documentation. • Apply secure coding, accessibility-aware development, logging, and observability practices. • Mentor less-experienced developers and contribute to engineering standards and knowledge sharing. Required Qualifications • 8+ years of professional full-stack software development experience. • Strong experience with Java, Spring Boot, REST APIs, SQL, and modern front-end development using TypeScript/React or comparable frameworks. • Experience developing and integrating APIs in enterprise environments. • Experience with automated testing, source control, code review, and CI/CD practices. • Working knowledge of cloud platforms, containers, and modern application deployment patterns. • Ability to diagnose complex software defects and performance issues. • Understanding of secure coding and software quality practices. • Strong collaboration, documentation, and communication skills. Education Required: Bachelor's degree in Computer Science, Software Engineering, Information Technology, or a related field. Preferred: Master's degree in Computer Science or a related technical discipline. Target Certifications • AWS Developer Associate or Microsoft Azure Developer Associate Equivalent or advanced certifications may be considered where appropriate based on the candidate’s experience and the needs of the position. Preferred Experience • Federal health IT or public health application experience. • Experience supporting NBS or comparable mission-critical enterprise applications. • Experience with FHIR or health-related APIs. • Experience with Kubernetes, Docker, GitHub Actions, and automated security/quality scanning. • Experience with accessibility-aware front-end development. Work Authorization and Federal Suitability • Must be legally authorized to work in the United States. • Must be able to successfully complete the applicable Government background investigation. • Must be eligible to obtain and maintain required Federal credentials and information-system access. • Must comply with applicable Federal security, privacy, confidentiality, and acceptable-use requirements.