Senior Full-Stack Software Engineer

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 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.