Principal Avionics Software Engineer - GNSS; ONSITE

Collins Aerospace is seeking a Principal level Global Navigation Satellite System (GNSS) Software Engineer to support the development, integration, and verification of advanced avionics and Positioning, Navigation, and Timing (PNT) software. This onsite position in Melbourne, Florida requires a U.S. Citizen or U.S. Person authorized to work in the United States without the company’s immigration sponsorship, and the role does not require a security clearance.

• Design, implement, integrate, and test embedded software for advanced avionics navigation systems.
• Develop and execute verification plans, procedures, and test cases for GNSS algorithms, navigation functions, and integrity‑monitoring software.
• Perform requirements‑based verification at the unit, integration, and system levels.
• Apply automation, scripting, and GenAI‑enhanced tools to improve verification quality and efficiency.
• Maintain full requirements, design, code, and test traceability per DO‑178C DAL A standards.
• Participate in formal engineering reviews, including requirements, design, code, and test readiness reviews.
• Collaborate with navigation algorithm, systems, and hardware engineering teams to ensure robust end‑to‑end system performance.
• Support certification activities, including documentation, audits, and generation of verification artifacts for airworthiness approval.

• Deep expertise in GNSS, including GPS signal structures, tracking algorithms, navigation filters, and PNT system performance.
• Hands‑on experience in jamming/spoofing detection, RF threat analysis, and resilient navigation techniques.
• DO‑178C DAL A development and verification practices for safety‑critical avionics.
• Technical leadership capabilities in advanced navigation and avionics systems.

• Degree in Science, Technology, Engineering or Mathematics (STEM) with a minimum of 8 years of prior relevant experience, or an advanced degree with a minimum of 5 years of experience.
• Experience with embedded C/C++ software development and proficiency in Python scripting.
• Experience in test automation and integration.
• Strong background in developing test plans, procedures, and performing software integration testing for avionics systems.
• Familiarity with test management, defect tracking, and requirements management tools.
• Ability to interpret requirements, create test cases, and analyze test results.
• Strong communication, analytical, and problem‑solving skills.
• Must be authorized to work in the U.S. without the company’s immigration sponsorship; sponsorship will not be offered.

• Full life‑cycle software development experience, from requirements through integration and testing.
• Experience leading local and offshore software development and verification teams.
• Working knowledge of GNSS navigation products.
• Experience with GNSS simulators and scenario development.
• Knowledge of ARINC 429, DO‑330, and DO‑178C.
• Experience with timing analysis, memory and stack usage analysis, and structural coverage.
• Experience using LDRA or Vector Cast for structural coverage analysis.
• Working knowledge of SVN and Atlassian tools such as Jira and Jama.

• Medical, dental, and vision insurance.
• Three weeks of vacation for newly hired employees.
• Generous 401(k) plan with employer matching and a Lifetime Income Strategy option.
• Tuition reimbursement program.
• Student loan repayment program.
• Life insurance and disability coverage.
• Optional pet, home, and auto insurance; additional life and accident insurance; critical illness insurance; group legal and  protection.
• Birth, adoption, and parental leave benefits; fertility and family planning support.
• Adoption Assistance and Autism Benefit.
• Employee Assistance Plan with up to 10 free counseling sessions.
• Wellness incentives and rewards program.
• Doctor on Demand virtual visits;
  Teladoc medical experts; second opinion program.
• Bright Horizons child and elder care services.
• Additional benefits per business unit and employment agreement.

The salary range for this role is $107,500 USD - $204,500 USD.

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.