Senior Backend Engineer – Secure APIs & Integrations

Valiant-Harbor-International,-LL; Bedford (MA); Hybrid; USD 120,000 - 160,000; Full time

Job summary

Valiant Harbor International, LLC is seeking a Full-Stack Software Engineer to support advanced U.S. Air Force programs at Hanscom AFB, delivering secure backend services, APIs, and enterprise integrations in Linux environments.

You will work with Air Force engineers and stakeholders to translate mission needs into technical solutions, adhering to DevSecOps practices and modern software engineering standards.

Qualifications

• Active Secret clearance required at time of selection; eligible for Top Secret with SCI eligibility.
• Bachelor's degree in Computer Science, Software Engineering, or related STEM discipline.
• 7–10 years of professional software engineering experience.
• Full-stack experience with deep backend engineering expertise designing and developing secure backend software applications, APIs, and enterprise integrations.
• Experience integrating multiple software systems, services, or data sources within enterprise or mission-critical environments.
• Experience with Java in Linux/Unix environments.
• Experience with containers, CI/CD pipelines, cloud technologies, modern Java frameworks, or enterprise integration technologies is preferred.
• Strong analytical, troubleshooting, and problem-solving skills.
• Ability to communicate effectively with technical and non-technical stakeholders.
• Willingness to travel as required.

Responsibilities

• Design, develop, and maintain secure backend software applications and services using Java.
• Build scalable REST APIs, enterprise integrations, and database-driven applications.
• Develop software to support reliable communication between multiple systems and data sources.
• Develop software that operates within Linux/Unix environments and supports deployment in secure government networks.
• Collaborate directly with Air Force stakeholders to translate mission needs into technical solutions.
• Develop clean, maintainable, and well-tested code following modern software engineering best practices.
• Participate in code reviews and contribute to technical design discussions.
• Troubleshoot complex backend, integration, and performance issues across distributed systems.
• Support secure software development and DevSecOps practices throughout the software lifecycle.
• Contribute to continuous improvement of shared libraries, development tools, and engineering processes.
• Stay current with emerging technologies and recommend new tools and approaches that improve system performance, security, and maintainability.

Skills

Java

Linux/Unix

REST APIs

Enterprise integration

CI/CD

Containerization

Cloud technologies

Security engineering

Problem-solving

Team collaboration

Education

Bachelor's degree in Computer Science or related STEM

Tools

Docker

Kubernetes

Git

XML

Job description

Valiant Harbor International, LLC is seeking a Full-Stack Software Engineer to support advanced U.S. Air Force programs at Hanscom AFB, delivering secure backend services, APIs, and enterprise integrations in Linux environments.

You will work with Air Force engineers and stakeholders to translate mission needs into technical solutions, adhering to DevSecOps practices and modern software engineering standards.