Senior Principal Software Engineer; Onsite

Senior Principal Software Engineer (Onsite)

Location: Cedar Rapids, IA.

Pay Range: $124,000 - $250,000 per year.

Security Clearance: DoD Clearance Secret. U.S. citizenship required.

At Collins Aerospace, we engineer mission success through cutting‑edge embedded communication solutions that keep military forces worldwide safe, connected, and informed.

We’re looking for a Senior Principal Software Engineer to shape the future of secure communications. You will develop critical real‑time communications for pilots and soldiers, leading initiatives across the software development lifecycle, mentoring teammates, and influencing future product direction.

• Architect, design, and develop embedded software and communication products in C/C++ and Rust.
• Plan and lead requirements, implementation, test development, and certification activities to drive project success.
• Develop innovative tools and automated testing infrastructure to support Continuous Integration and Continuous Development.
• Serve as a technical lead, mentoring and guiding software developers to ensure successful execution and professional growth.
• Lead large initiatives and organize tasks for team members, ensuring timely delivery.
• Impact our business and customers by supporting cost, schedule, and technical performance.

• Gain technical leadership experience and mentorship opportunities to develop talent.
• Collaborate with subject‑matter experts and industry specialists for hands‑on experience with new technologies.
• Engage with a multidisciplinary team to develop a cross‑functional skill set.
• Evolve into a subject‑matter expert on projects and programs.

• University degree in STEM and minimum 10 years relevant experience, or an advanced degree and minimum 7 years experience.
• At least 3 years of experience leading across the software development lifecycle.
• At least 3 years of experience with software development and integration for Windows, Linux, and containers.
• At least 3 years of experience with embedded software development utilizing Python, C/C++, and/or Rust.
• Active, transferable U.S. government‑issued security clearance required. U.S. citizenship required.

• Proficient in Linux development environments.
• Strong expertise in Git or other version control systems.
• Knowledgeable in networking and communications protocols.
• Comfortable working in Agile/Scrum environments.
• Experience with communications systems or software‑defined radios.
• Experience developing open‑systems architecture and microservices for containerized environments.
• Experience applying patterns, data structures, and algorithms to solve problems in software systems.
• Ability to investigate complex problems to root cause and champion solutions.
• Ability to architect, design, and implement solutions to complex problems with minimal guidance.

• Medical, dental, and vision insurance
• Three weeks of vacation for newly hired employees
• Generous 401(k) plan with employer matching and separate retirement contribution, including Lifetime Income Strategy
• Tuition reimbursement program
• Student loan repayment program
• Life insurance and disability coverage
• Optional coverages: pet insurance, home and auto insurance, additional life and accident insurance, critical illness insurance, group legal,  protection
• Birth, adoption, and parental leave benefits
• Ovia Health fertility and family planning
• Adoption assistance
• Autism benefit
• Employee Assistance Plan (up to 10 free counseling sessions)
• Healthy You incentives, wellness rewards programme
• Doctor on Demand, virtual doctor visits
• Bright Horizons child and elder care services
• Teladoc Medical Experts second‑opinion program
• And more!

Eligible for relocation.

As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in‑person at one of our office locations, regardless of whether the role is designated as on‑site, hybrid, or remote.

RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified individuals with a disability and protected veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act.