Sr. Software Engineer; Microservices, C++, Linux

Sr. Software Engineer (Microservices, C++, Linux) Locations

Salem, NH Office, 9 Northeastern Blvd, Suite 600, Salem, NH 03079, USA

Make an Impact on Mission-Critical Security Technology

We’re seeking a Senior Software Engineer to join a high-impact team supporting advanced, network-connected security screening systems. This is a hands‑on role focused on stabilizing and enhancing production systems while contributing to next‑generation (greenfield) capabilities. If you enjoy solving complex problems, improving real‑world systems, and working across engineering disciplines—this role offers a strong balance of ownership, technical depth, and visible impact.

• Architect and deliver new features that coordinate across multiple systems, designing secure and reliable inter-service communication to support them.
• Own and enhance existing production codebases
• Contribute to targeted greenfield development as new capabilities are introduced
• Support software releases, debugging, and issue resolution in production environments
• Partner with systems, test, field, and manufacturing teams to resolve integration challenges
• Create and improve technical documentation to support long‑term system sustainability

• Experience with microservices architectures
  , including:
• Message brokers
• Containerization
• Experience in C++, including multi‑threading.
• Proven background working in Linux environments (must‑have)
• Experience supporting distributed / networked systems in production
• Comfortable working in and improving established codebases

• Experience balancing system sustainment and new development
• Strong debugging, code review, and system‑level problem‑solving skills
• Background in complex, integrated environments where uptime and reliability are critical
• Ability to operate independently while influencing technical direction
• Passion for improving documentation and knowledge continuity

• Work on real‑world, mission‑critical technology
• High visibility across cross‑functional teams
• Blend of stability work + forward‑looking innovation

Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities
This employer is required to notify all applicants of their rights pursuant to federal employment laws. For further information, please review the Know Your Rights notice from the Department of Labor.