Senior Software Engineer - Core Systems & Libraries; Onsite

Overview

Join the Collins Aerospace Core Systems & Libraries team as a Senior Software Engineer in Huntsville, Alabama. Your mission is to architect and develop core software components, libraries, and tools that form the backbone of modern aircraft, delivering scalable, certifiable avionics platforms in safety‑critical environments.

• Develop 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 (DO‑178).
• Develop software requirements, decomposition, and traceability across complex systems.
• Develop and verify software using modern C++ and object‑oriented design principles.
• Produce DO‑178 certification artifacts, including DAL‑A deliverables.
• Perform 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 cross‑functionally with engineering, program leadership, and customers to align technical solutions with program objectives.
• Travel domestically and internationally up to 10% as required.

• Hands‑on experience with cutting‑edge and emerging technologies that shape the future of avionics and aerospace systems.
• End‑to‑end expertise across the full product lifecycle, from requirements and design through verification and delivery of safety‑critical systems.
• A deep understanding of software certification (DO‑178) and how world‑class avionics products meet rigorous regulatory standards.
• Design, scale, and sustain software product lines that support a wide range of platforms and global customers.

• Degree in Science, Technology, Engineering or Mathematics (STEM) or an advanced degree with at least five years of relevant experience (or three years if holding an advanced degree).
• U.S. citizenship required.
• Proven experience designing and developing software architecture, libraries, or platform‑level components within an aerospace or safety‑critical environment.
• Demonstrated ability to lead technical execution of tasks, including customer engagement and stakeholder presentations.
• Hands‑on experience supporting safety‑critical airborne software development and certification activities (e.g., requirements, verification, or certification artifacts).

• Hands‑on experience supporting DO‑178 software development and certification activities.
• 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 DO‑178 – DALA preferred.
• Experience with design and development of Flight Management Systems, Software, Aircraft Applications or Middleware.
• Familiarity with revision control tools (e.g., GIT, Subversion, JIRA).

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.