Senior Software Engineer - Core Systems & Libraries (Hybrid)

RTX (Raytheon); Huntsville (TN); Hybrid; USD 110,000 - 160,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

Three weeks of vacation

Generous 401(k) with match and pension

Tuition reimbursement program

Student Loan Repayment Program

Life insurance and disability coverage

Pet insurance options

Job summary

RTX in Huntsville, AL is seeking a Senior Software Engineer to architect and develop core software components for avionics platforms. You will work across the full lifecycle, applying modern C++ in safety-critical environments and pursuing civil and military certification standards.

This role offers a hybrid schedule and opportunities to influence system-level architecture, collaborate with cross-functional teams, and deliver DO-178 artifacts, including DAL A deliverables, for certification

Qualifications

• Typically requires a STEM degree and 5+ years of relevant experience or an Advanced Degree with 3+ years.
• Experience designing and developing software architecture, libraries, or platform-level components in aerospace or safety-critical environments.
• Experience leading technical execution of tasks, including customer engagement and presenting to stakeholders.

Responsibilities

• Develop the architecture and design of core software components, libraries, and tooling for avionics.
• 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.
• Create DO-178 certification artifacts, including DAL-A deliverables.
• Perform certification activities, including engagement with customers and regulatory authorities.
• Collaborate with engineering, program leadership, and customers to align technical solutions with program objectives.

Skills

C++

DO-178

System architecture

Safety-critical

Leadership

Education

STEM degree

Advanced degree

Tools

GIT

JIRA

VxWorks

Job description

Date Posted: 2026-10-13

Country: United States of America

Location: US-AL-HUNTSVILLE-382 ~ 420 Jan Davis Dr ~ DAVIS 382

Position Role Type: Hybrid

U.S. Citizen, U.S. Person, or Immigration Status Requirements: U.S. citizenship is required, as only U.S. citizens are authorized to access information under this program/contract.

Security Clearance Type: None/Not Required

Security Clearance Status: Not Required

At RTX, the world largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world's most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world.

Collins Aerospace is a leader in technologically advanced, intelligent solutions that help redefine the aerospace and defense industry. With a comprehensive portfolio and deep technical expertise, we help customers meet the demands of the global market. Join us and help shape the future of aerospace and defense.

Join the Collins Aerospace Core Systems & Libraries team and help build the software backbone that powers modern aircraft.

We're looking for a Senior Software Engineer who enjoys solving complex problems and delivering high-impact solutions in safety-critical environments. In this role, you will architect and develop core software components, libraries, and tools that enable scalable, certifiable avionics platforms. You'll work across the full software lifecycle, partnering with cross-functional teams to deliver robust solutions aligned with civil and military certification standards.

This is a unique opportunity to influence system-level architecture, drive open-architecture innovation, and help shape the technologies defining the future of aerospace.

This role will have a hybrid schedule in Cedar Rapids, Iowa or Huntsville, AL.

What You Will Do

• 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
• Develop 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
• Willing and Able to travel as required (domestic and international

What You Will Learn

• Gain hands-on experience with cutting-edge and emerging technologies that are shaping the future of avionics and aerospace systems
• Build end-to-end expertise across the full product lifecycle, from requirements and design through verification and delivery of safety-critical systems
• Develop a deep understanding of software certification (DO-178) and how world-class avionics products meet rigorous regulatory standards
• Learn how to design, scale, and sustain software product lines that support a wide range of platforms and global customers

Qualifications You Must Have

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 5 years prior relevant experience or an Advanced Degree in a related field and minimum 3 years of experience.
• Experience designing and developing software architecture, libraries, or platform-level components within an aerospace or safety-critical environment.
• Experience leading technical execution of tasks, including customer engagement and presenting stakeholders.

Qualifications We Prefer

• 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 - DAL A preferred.
• Experience with design and development of Flight Management Systems, Software, Aircraft Applications or Middleware.
• Familiar with revision control concepts and tools (e.g. GIT, Subversion, JIRA).
• Hands-on experience supporting DO-178 software development and certification activities (e.g. requirements, verification, or certification artifacts)

What We Offer

• Medical, dental, and vision insurance
• Three weeks of vacation for newly hired employees
• Generous 401(k) plan that includes employer matching funds and separate employer retirement contribution, including a Lifetime Income Strategy option
• Tuition reimbursement program
• Student Loan Repayment Program
• Life insurance and disability coverage
• Optional coverages you can buy pet insurance, home and auto insu