Senior Software & Security Engineer

About the Role

We are looking for a senior software engineer who can operate comfortably across software development, cloud infrastructure, and security compliance-and take ownership of it.

This is not a pure development role, and it's not a pure security role. It's a hybrid position where you will drive both technical delivery and NIST Risk Management Framework (RMF) / Authority to Operation (ATO) execution for a cloud-based application.

You'll work directly with engineers and clients, ensuring the system is not only built correctly-but also secure, compliant, and ready for authorization.

What You'll Be What You Will Be Doing

You'll play a central role in both engineering and compliance.

• Lead the RMF/ATO lifecycle, including documentation, control implementation, and audit readiness
• Design and guide development and enhancement of a secure, cloud-native application
• Work closely with engineers to ensure security is built into the development process, not added later
• Support and mentor junior engineers, helping them grow into hybrid roles
• Collaborate directly with clients and stakeholders to navigate compliance requirements
• Oversee deployments in cloud environments using Docker/Docker Swarm/Kubernetes
• Help integrate security into CI/CD pipelines and DevSecOps practices

What We're Looking For

This role requires someone who has already worked in this space-not just studied it.

• 7+ years of experience in software engineering, cybersecurity, or a related field
• Demonstrated experience with RMF / ATO execution (not just exposure)
• Strong understanding of NIST frameworks (e.g., 800-53)
• Experience building applications using:
  
  
  
  • Node.js / TypeScript / JavaScript
  • C#
  • Modern front-end frameworks (Vue.js or similar)
  
  
  
  
• Experience working in AWS and/or Azure environments
• Solid understanding of databases (PostgreSQL, MongoDB, Redis)
• Hands-on experience with Docker and containerized deployments
• Ability to communicate effectively with both technical teams and clients

What Will Set You Apart

• Experience working in federal, DoD, or regulated environments
• Background in leading RMF/ATO efforts or accreditation strategy
• Experience with microservices architectures
• Familiarity with DevSecOps tooling and automated compliance

Clearance Type: Able to obtain a security clearance

Position Type: Full time

Applied Training Solutions, LLC is a leading simulations company providing innovative systems, products, and solutions to government and commercial customers.

Applied Training Solutions, LLC is committed to hiring and retaining a diverse workforce. We are an Equal Opportunity Employer, making decisions without regard to race, color, religion, sex, national origin, age, veteran status, disability, or any other protected class. U.S. Citizenship is required for most positions.