Senior Principal Software Engineer - Core Services and Libraries (Hybrid)

RTX•Davis, AL

8d•Hybrid

About The Position

Collins Aerospace is seeking a Senior Principal Software Engineer for its Core Systems and Libraries team to shape the software foundation for modern aircraft. The role leads the architecture and development of core software components, libraries, and tools that enable scalable, certifiable avionics platforms. The engineer works across the full software lifecycle and partners with cross-functional teams to deliver solutions aligned with civil and military certification standards, influence system-level design, advance open architecture initiatives, and contribute to future aerospace technologies. The position is based in Huntsville, Alabama, and is designated hybrid, with employees working regularly both onsite and offsite. The time spent onsite is determined with the employee’s leader. The role may require domestic and international travel of less than 10%. U.S. citizenship is required because only U.S. citizens are authorized to access information under the program or contract. No security clearance is required. The role offers exposure to emerging avionics technologies and experience across the product lifecycle, from requirements and design through verification and delivery of safety-critical systems. It also provides opportunities to develop expertise in DO-178 software certification and software product lines supporting multiple platforms and global customers.

Requirements

Typically, a STEM degree and a minimum of 10 years of relevant experience, or an advanced degree in a related field and a minimum of 7 years of experience.
Experience designing and developing software architecture, libraries, or platform-level components in an aerospace or safety-critical environment.
Experience leading technical execution of projects, including customer engagement and presentations to senior stakeholders.
Experience working across cross-functional engineering and program teams to deliver complex, integrated solutions.
U.S. citizenship is required.

Nice To Haves

Hands-on experience supporting DO-178 software development and certification activities, such as requirements, verification, or certification artifacts.
Experience with C++ and VxWorks.
Experience writing high-level and low-level requirements.
Experience writing test cases and automated test procedures.
Experience with civil certification under DO-178, with DAL A preferred.
Experience with design and development of Flight Management Systems, software, aircraft applications, or middleware.
Familiarity with revision control concepts and tools such as GIT, Subversion, and JIRA.

Responsibilities

Lead the architecture and design of core software components, libraries, and tooling aligned to avionics system requirements.
Drive technical direction and execution across development and verification activities for safety-critical software under DO-178.
Define and manage software requirements, decomposition, and traceability across complex systems.
Develop and verify software using modern C++ and object-oriented design principles.
Own and produce DO-178 certification artifacts, including DAL-A deliverables.
Lead and support certification efforts, including engagement with customers and regulatory authorities.
Conduct and contribute to peer reviews to ensure quality, consistency, and compliance across the lifecycle.
Collaborate with engineering, program leadership, and customers to align technical solutions with program objectives.
Travel domestically and internationally as required, at less than 10%.

Benefits

Medical, dental, and vision insurance.
Three weeks of vacation for newly hired employees.
401(k) plan with employer matching funds and a separate employer retirement contribution, including a Lifetime Income Strategy option.
Tuition reimbursement program.
Student Loan Repayment Program.
Life insurance and disability coverage.
Optional pet, home and auto, additional life and accident, critical illness, group legal, and identity theft protection coverages.
Birth, adoption, and parental leave benefits.
Ovia Health, fertility, and family planning benefits.
Adoption Assistance.
Autism Benefit.
Employee Assistance Plan, including up to 10 free counseling sessions.
Healthy You Incentives wellness rewards program.
Doctor On Demand virtual doctor visits.
Bright Horizons child and elder care services.
Teladoc Medical Experts second-opinion program.
Relocation eligibility.
Potential annual short-term and/or long-term incentive compensation, subject to position level and other factors.
Potential paid time off and holidays, among other benefits.