Senior Full-Stack Engineer – Java/Spring REST APIs

Now100; Atlanta (GA); On-site; USD 120,000 - 180,000; Full time

Job summary

Certified Technical Experts, Inc. (CTE) is seeking a Senior Full-Stack Software Engineer to design, develop, test, and maintain modern full-stack capabilities for mission-critical Federal public health applications.

The role spans backend services, API design, data access, and front-end work with TypeScript/React. 8+ years of experience and strong Java/Spring Boot are required, along with cloud, CI/CD, and secure coding practices.

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.
• 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.

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.

Skills

Java

Spring Boot

REST APIs

SQL

TypeScript/React

Education

Bachelor's degree

Master's degree

Tools

Kubernetes

Docker

GitHub Actions

Automated security scanning

Automated quality scanning

Job description

Certified Technical Experts, Inc. (CTE) is seeking a Senior Full-Stack Software Engineer to design, develop, test, and maintain modern full-stack capabilities for mission-critical Federal public health applications.

The role spans backend services, API design, data access, and front-end work with TypeScript/React. 8+ years of experience and strong Java/Spring Boot are required, along with cloud, CI/CD, and secure coding practices.