Senior Principal Software Architect (Onsite)

RTX
United States
Workplace: OnsiteFull timeUSD 132,400 - 251,600 annuallyFunction: Software EngineeringExperience: 10+ yearsSkills: ["Technical leadership","Mentorship","Collaboration","Secure software practices","Performance optimization"]

Design and develop the Very Low Frequency (VLF) mission software solution, working across software, systems, and hardware teams. Serve as technical lead for cross-functional architecture decisions, defining embedded software and simulation design using MBSE/UML, and integrating multi-threaded C/C++ code on RTOS. Drive secure software practices aligned with STIGs, support verification with automated test frameworks, and mentor engineering teams on modular, high-performance real-time systems.

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FursaFursa
RTX
RTX
1 week ago

Senior Principal Software Architect (Onsite)

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Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 9 hours agoStatus: Live
Reposted: similar role first listed 6 months ago

Job Summary

Design and develop the Very Low Frequency (VLF) mission software solution, working across software, systems, and hardware teams. Serve as technical lead for cross-functional architecture decisions, defining embedded software and simulation design using MBSE/UML, and integrating multi-threaded C/C++ code on RTOS. Drive secure software practices aligned with STIGs, support verification with automated test frameworks, and mentor engineering teams on modular, high-performance real-time systems.
Location: United States
Workplace: Onsite
Employment Type: Full time
Job Function: Software Engineering
Seniority: Mid level

Key Responsibilities

  • •Design and develop VLF mission software to control and monitor mission-critical transmitters in collaboration with systems and hardware engineers.
  • •Define, evolve, and optimize software and simulation design across mission-critical embedded platforms.
  • •Lead cross-functional engineering architecture decisions and ensure the team understands platform and hardware constraints.
  • •Mentor engineering teams on architectural best practices, modularity, code structure, and performance tradeoffs for real-time systems.
  • •Define software requirements and UML design diagrams using an MBSE tool, and integrate multi-threaded embedded software using C/C++ on an RTOS.

Pay and Benefits

Salary: USD 132,400 - 251,600 annually
Perks:Health InsuranceDentalVision401kLife InsuranceDisability CoverageRelocationParental LeavePaid Leave

Key Requirements

  • •Extensive experience with real-time operating systems (RTOS), including development, debugging, and performance optimization of embedded software applications.
  • •Experience with Model-Based Systems Engineering (MBSE), system decomposition, and interface control across disciplines.
  • •Experience with software lifecycle processes, configuration control, and change management in high-integrity development environments.
  • •Active and transferable Secret U.S. government security clearance required prior to start date.
  • •Typically requires a STEM degree and 10+ years of relevant experience (or an Advanced Degree with 7+ years).
Experience:10+ yearsDefenseEmbedded systemsReal-time systems
Education:
Skills:Technical leadershipMentorshipCollaborationSecure software practicesPerformance optimization
Tech Stack:CC++RTOSReal Time Operating SystemMBSEUMLModel Based Systems EngineeringEmbedded softwareCMakeJiraGitVisual Studio CodeGtestPythonJSONQtQMLMulti-threadedSTIGsCDRL

Eligibility

Nationality:U.S. CitizenU.S. Person
Security Clearance:Secret

Company Brief

RTX
Designs, manufactures, and services aerospace and defense systems, including aircraft engines, avionics, aerostructures, missiles, and cybersecurity solutions for commercial, military, and government customers worldwide.
Industry: Aerospace Manufacturing
Company Size: Enterprise (1,001+ employees)
Revenue: USD 1B+
Growth: Public Company
Valuation: Public Company (Market Cap in USD)
Funding: IPO / Publicly Listed
Headquarters: Arlington, United States
Founded: 2020
Website