Senior Principal Software Engineer

RTX

. Serve as senior technical authority for architecture, system design, performance, reliability, and integration across the GPNTS navigation system .

Posted 9/17/2026full-timeRemote • California • United StatesSenior💰 $132,400 - $251,600 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive expertise in C/C++ development for embedded, multi-processor, and real-time systems, with a strong focus on software architecture, system integration, and performance analysis. Provides engineering leadership and technical guidance while effectively communicating with government stakeholders and program representatives.

Highest-signal resume keywords

C/C++ DevelopmentEmbedded Systems ArchitectureLinux DevelopmentTechnical LeadershipSecure Coding

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Embedded SystemsReal-Time SystemsSoftware ArchitectureAdvanced DebuggingPerformance AnalysisFault IdentificationRoot-Cause AnalysisAutomated Test InfrastructureMission-Critical Data FusionDeterministic Processing

Soft Skills

Strong Communication SkillsNegotiation SkillsMentoring

Tools & Technologies

GitLab CIJenkinsLinux-Based ToolsCI/CD Platforms

Certifications & Qualifications

U.S. Government-Issued Security ClearanceDoD Secret Clearance

Industry Keywords

Navigation SystemsSensor FusionDistributed SystemsCybersecurity IntegrationTechnical Roadmaps

Tech Stack

Tools & technologies

Cyber SecurityDistributed SystemsJenkinsLinuxC++

About the role

Key responsibilities & impact

Serve as senior technical authority for architecture, system design, performance, reliability, and integration across the GPNTS navigation system
Apply advanced C/C++ expertise to embedded, multi-processor, real-time systems
Develop principles, concepts, algorithms, and architectural patterns for mission-critical navigation, timing, and sensor fusion
Resolve unusually complex technical issues using innovative approaches
Determine and pursue long-range technical objectives with minimal oversight
Lead system-level integration involving embedded platforms, real-time data feeds, navigation sensors, and shipboard networking environments
Conduct performance analysis, advanced debugging, fault identification, and root-cause analysis on distributed components
Develop and review design documentation, interface specifications, architectural models, and engineering review packages
Provide engineering leadership, mentoring, and technical guidance to engineers
Act as spokesperson for advanced technical efforts, system upgrades, and complex R&D projects
Advise program leadership and customers on architecture, feasibility, trade studies, modernization planning, and system applications
Recommend improvements to engineering processes, tools, and best practices

Requirements

What you’ll need

Extensive experience in C/C++ development for embedded, multi-processor, or real-time systems
Experience with software architecture, distributed systems, deterministic processing, and advanced debugging
Experience with Linux development, systems programming, and Linux-based tools or build systems
Experience leading technical teams, influencing architecture, and guiding complex engineering efforts
Typically requires a STEM degree and at least 10 years of relevant experience, or an advanced degree in a related field and at least 7 years of experience
Ability to obtain and maintain a U.S. government-issued security clearance
U.S. citizenship required
Active and existing DoD Secret clearance required after day 1
Bachelor’s degree in computer science, computer engineering, software engineering, or related STEM field preferred
Experience with embedded, real-time, networking, or distributed systems architectures
Experience with GitLab CI, Jenkins, or similar CI/CD platforms
Secure coding, cybersecurity integration, or DevSecOps expertise
Experience developing automated test infrastructures or simulation environments
Experience integrating navigation sensors, timing signals, distributed messaging frameworks, or mission-critical data fusion
Experience with technical roadmaps, architectural refactoring, modernization, or long-term sustainment strategies
Customer-facing technical leadership with government stakeholders or program representatives preferred
Strong communication and negotiation skills

Benefits

Comp & perks

Sign-on bonus eligibility
Medical, dental, and vision insurance
Three weeks of vacation for newly hired employees
401(k) plan with employer matching funds and separate employer retirement contribution
Lifetime Income Strategy option
Tuition reimbursement program
Student Loan Repayment Program
Life insurance and disability coverage
Optional pet insurance, home and auto insurance, additional life and accident insurance, critical illness insurance, group legal, and ID theft protection
Birth, adoption, and parental leave benefits
Carrot Health for hormonal health, fertility, and family building
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
Possible relocation assistance
Flexible work schedules
Employee Scholar Program
Paid time off and holidays
Annual short-term and/or long-term incentive compensation programs may be available