Principal / Senior Software Engineer (C++, Linux)

Full-time, on-site position in Salem, NH.

About the role

Work on real-world, mission-critical technology with high visibility across cross-functional teams. Opportunity to make an immediate impact in a 6–12 month engagement blending stability work and forward-looking innovation.

Responsibilities

• Own and enhance existing production codebases (primary focus)
• 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

Requirements

• Strong experience in C++
• Working knowledge of Python (scripting level familiarity is sufficient)
• Proven background working in Linux environments (must-have)
• Experience with microservices architectures, including:
  • REST APIs
  • Message-based communication (MQTT preferred)
• Experience supporting distributed / networked systems in production
• Comfortable working in and improving established codebases

Skills

• 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