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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Systems Engineer - Software - **Company:** Modern Technology Solutions, Inc. - **Location:** El Segundo, CA, United States - **Experience:** Expert - **Salary:** $165,000.0 - $205,000.0 - **Contract:** Permanent contract - **Skills:** C (Programming Language), Java (Programming Language), JavaScript (Programming Language), Agile Methodology, Systems Engineering, Automation of Tests, C Sharp (Programming Language), C++ (Programming Language), Databases, Computer Engineering, Software Debugging, Network Interface Controllers, Hardware-In-The-Loop Simulation, Interoperability, Python (Programming Language), Node.Js, Software Safety, SAP (Applications), Signal Processing, Software Engineering, Data Streaming, Subsystems, Systems Integration, Data Processing, ReactJS, System-level Testing, Information Technology, DO-178B - **Published:** August 1, 2026 - **Apply:** https://diversityjobs.com/main/sendform/8/8/28176/1/17771916?backUrl=%2Fcareer%2F17771916%2FSenior-Systems-Engineer-Software-California-El-Segundo ## About the Role * 7+ years of experience architecting, implementing, or integrating ground system components (satellite command & control, TT&C, data processing, communications, or mission planning). * 7+ years of hands-on software engineering/development experience using C++, Python, or related technical stacks. * 2+ years of leadership experience presenting or evaluating program lifecycle reviews (SRR, SDR, SFR, PDR, CDR, MRR, or TRR). * 2+ years of experience developing or evaluating technical software design artifacts, Interface Control Documents (ICDs), and operational integration procedures. Compliance & Standards * Working knowledge of systems and software standards such as AFI 99-103, AFSPCI 99-103, or SSC-S-001. Testing & Agile Methods * Experience with system-level testing, hardware-in-the-loop debugging, and Agile software development workflows. Education: * Bachelor's degree in a STEM discipline (Computer Science, Computer Engineering, Aerospace Engineering, Software Engineering, etc.). * Clearance: Active TS Clearance. What Desired Skills You'll Bring: * Full-Stack & Language Diversity: Proficiency in Java, C#, C, JavaScript, React, Node.js, or software automation frameworks. * Specialized Software Standards: Knowledge of aviation or space software safety/quality standards (e.g., DO-178C, IEEE 12207). * Space Systems Experience: Experience with NG OPIR, SBIRS, or Weather System Systems Engineering Plans (SEPs). * Automated Testing & Workflow Optimization: Experience optimizing client workflows through automation tools and automated testing suites. * Advanced Education: Master's degree in Computer Science, Software Engineering, or related field. * Clearance: Active Top Secret Clearance and ability to acquire SCI / SAP Access ## Description Software Engineering & Lifecycle Governance * Software Acquisition & Governance: Monitor, identify, document, and report technical discrepancies across software acquisition planning, risk analyses, and acquisition strategy panels in compliance with AFI 99-103, AFSPCI 99-103, and SSC-S-001. * Technical Audits & Reviews: Conduct technical evaluations during Functional and Physical Configuration Audits (FCA/PCA), Computer Resource Working Groups (CRWGs), specification reviews, and contractor proposal reviews. * Software Assurance & Margin Analysis: Perform code, design, and data flow reviews, timing and memory margin analyses, performance predictions, and software capability assessments. Spacecraft, Payload, & Ground Software Oversight * Flight Software Subsystem (FSS) Oversight: Monitor spacecraft and payload flight software (FSW)-including Pointing and Control Assembly (PCA) FSW and Signal Processing Assembly (SPA) FSW-for GEO and HEO orbits. * Ground Segment Integration: Evaluate ground software subsystems, including Tracking, Telemetry & Control (TT&C), Ground Control, Mission Management and Services, and crypto interface integrations. * Obsolescence & Maintenance Analysis: Analyze hardware/software integration, databases, and flight/ground software code bases to resolve obsolescence issues and support onboard payload maintenance. * Integration & Test (I&T) Verification: Review test plans, procedures, and simulation analyses to verify software functionality, system interoperability, and operational readiness. ## Related Videos - [Watch Tests Go Brrrr! : Getting Started with Cypress in ReactJS](https://www.wearedevelopers.com/videos/282-watch-tests-go-brrrr-getting-started-with-cypress-in-reactjs) - [Stop using Node.js like in 2020! What changed and what you can do today with Node.js](https://www.wearedevelopers.com/videos/100011-stop-using-node-js-like-in-2020-what-changed-and-what-you-can-do-today-with-node-js) - [Crew Management System for Airlines: Plan duties for pilots & flight attendants worldwide](https://www.wearedevelopers.com/videos/1444-crew-management-system-for-airlines-plan-duties-for-pilots-flight-attendants-worldwide) - [Stop Using Node.js Like It’s 2020! - Alfonso Graziano](https://www.wearedevelopers.com/videos/1863-stop-using-node-js-like-it-s-2020-alfonso-graziano) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [Building AI Applications with LangChain and Node.js](https://www.wearedevelopers.com/videos/1512-building-ai-applications-with-langchain-and-node-js) ## Related Articles - [What is Software Engineering?](https://www.wearedevelopers.com/magazine/289-what-is-software-engineering) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [7 Important Tips That Every Software Developer Should Know](https://www.wearedevelopers.com/magazine/101-7-important-tips-that-every-software-developer-should-know) - [Software Engineer Career: Things You Should Know](https://www.wearedevelopers.com/magazine/143-software-engineer-career-things-you-should-know) - [How software is steering vehicle technology](https://www.wearedevelopers.com/magazine/515-how-software-is-steering-vehicle-technology) - [The Ultimate Software Engineer Career Path Guide for 2023](https://www.wearedevelopers.com/magazine/146-the-ultimate-software-engineer-career-path-guide-for-2023)