Senior Principal Software Engineer

RTX

Senior Principal Software Engineer at Collins Aerospace delivering innovative software solutions for critical aerospace and defense missions. Leading engineering activities through the software lifecycle and collaborating with multidisciplinary teams.

Posted 6/11/2026full-timeFort Wayne • California, Florida, Texas • 🇺🇸 United StatesSenior💰 $132,400 - $251,600 per yearWebsite

Tech Stack

Tools & technologies

Cyber SecurityJavaLinux

About the role

Key responsibilities & impact

Lead software engineering activities throughout the software lifecycle, including requirements analysis, architecture, design, development, integration, testing, deployment, modernization, sustainment, and/or related engineering efforts.
Develop, implement, and enhance software solutions, technologies, products, systems, processes, standards, and/or capabilities across a variety of mission areas.
Collaborate with multidisciplinary teams, customers, stakeholders, vendors, and/or engineering disciplines to define requirements, solve technical challenges, and deliver mission-critical capabilities.
Apply expert technical knowledge and domain expertise to solve highly complex challenges and deliver innovative software solutions that support customer and business objectives.
Support the development of scalable, maintainable, reusable, and/or secure software solutions that meet program, customer, and operational requirements.
Drive system integration, verification, validation, troubleshooting, test, deployment, and/or operational support activities to ensure high-quality software performance, functionality, and reliability.
Influence technical direction, engineering strategies, software architectures, and program outcomes through the application of deep software engineering expertise.
Communicate technical concepts, recommendations, risks, and program status to audiences ranging from engineering teams to customers and executive leadership.
Lead significant technical efforts, initiatives, and/or projects while serving as a subject matter expert and technical authority within their discipline.

Requirements

What you’ll need

Experience developing software applications, systems, or solutions using programming languages such as C/C++, Java, or similar languages.
The ability to obtain and maintain a U.S. government issued security clearance is required.
U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.
Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 10 years prior relevant experience or an Advanced Degree in a related field and minimum 7 years of experience.
Active and transferable Secret or Top Secret U.S. government issued security clearance.
Experience developing, integrating, testing, deploying, sustaining, and/or supporting software-based products, systems, platforms, and/or capabilities.
Experience with Linux, embedded software, real-time operating systems, DevSecOps, CI/CD pipelines, Agile development methodologies (e.g., Scrum, SAFe), automated testing frameworks, and/or related software development environments.
Knowledge of cybersecurity principles, secure software development practices, software assurance methodologies, requirements analysis and decomposition, systems integration, verification and validation, and/or related engineering disciplines.
Experience with Model-Based Systems Engineering (MBSE), UML, SysML, software architecture and design, requirements-driven development methodologies, and/or related systems engineering practices.
Experience supporting mission-critical, safety-critical, and/or regulated software development environments (e.g., DO-178 or similar standards).

Benefits

Comp & perks

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 insurance, additional life and accident insurance, critical illness insurance, group legal, ID theft protection
Birth, adoption, parental leave benefits
Ovia Health, fertility, and family planning
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
And more!
Eligible for relocation

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

C/C++JavaLinuxembedded softwarereal-time operating systemsDevSecOpsCI/CD pipelinesAgile development methodologiesautomated testing frameworksModel-Based Systems Engineering (MBSE)

Soft Skills

collaborationcommunicationleadershipproblem-solvingtechnical direction influencerequirements analysisrisk assessmentproject managementstakeholder engagementsubject matter expertise

Certifications

U.S. government issued security clearanceTop Secret clearanceSecret clearance