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Senior Principal Software Engineer (Onsite)

RTX

Sterling, Virginiafull-timePosted 4 days ago
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About this role

Date Posted: 2026-10-13 Country: United States of America Location: US-VA-STERLING-291 22640 Davis Dr DAVIS Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date.​ U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance​ Security Clearance Type: Secret - Current Security Clearance Status: Active and existing security clearance required on day 1 Raytheon Company Managed by Collins Aerospace Collins Aerospace, an RTX company, is a leader in technologically advanced and intelligent solutions for the global aerospace and defense industry. Collins Aerospace has the capabilities, comprehensive portfolio, and expertise to solve customers’ toughest challenges and to meet the demands of a rapidly evolving global market. The Strategic Defense Solutions (SDS) portfolio is seeking a highly motivated and skilled Software Engineer professional to join our team in Sterling, VA. In this critical role, you will be part of an innovative team focused on designing and developing software solutions, directly ensuring our customers are prepared for the most vital missions. Our Software Engineers work in an exciting, adaptive, and engaging environment enabling rapid learning to drive success. This position will support the shaping of high-fidelity Simulation & Modelling efforts for enablement of NC3 Mission-System Integration and Crew Training for the armed forces. Sign On Bonus Eligible What You Will Do: • Serve as a Senior Principal Software Engineer on a simulation team developing software models for a Mission Crew Trainer device. • Provide technical execution experience required for design, development, integration, test, & validation of a system that complies with technical and performance requirements. • Serve as a primary and important contributor to the team to drive software efforts to maturity. • Work in an Agile

Read the full description and requirements on the original posting.

Tailor your resume for this Senior Principal Software Engineer (Onsite) role

RTX and most employers screen applications with ATS software before a recruiter reads them, and they rank resumes that echo the language of the posting. To stand out for this role, mirror the exact skills, tools, and job title it uses, and make your location (Sterling, Virginia) clear. For software & it roles like this one, recruiters commonly scan for:

  • JavaScript
  • Python
  • React
  • AWS
  • SQL
  • CI/CD
  • Docker
  • REST APIs

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Frequently asked questions

Is the Senior Principal Software Engineer (Onsite) role at RTX remote?

This role is based in Sterling, Virginia. Check the original posting for any hybrid or remote flexibility.

How do I apply for this Senior Principal Software Engineer (Onsite) job?

Applications happen on the employer's own site — use the "Apply on company site" link on this page. Before you apply, tailor your resume to the listing so it clears the ATS.

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Listing sourced via RTX Careers. Tailr indexes public job postings so you can tailor your resume to them — applications happen on the employer's site.