> Markdown version of [/jobs/ext/1457746-software-systems-engineer-iii-sea](https://www.wearedevelopers.com/jobs/ext/1457746-software-systems-engineer-iii-sea). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Software Systems Engineer III - SEA

- **Company:** Belcan
- **Location:** Los Angeles, CA, United States
- **Experience:** Expert
- **Salary:** $202,966.0
- **Contract:** Temporary contract
- **Skills:** Testing (Software), Systems Engineering, Embedded Software, Systems Development Life Cycle, Software Engineering, Product Software Implementation Methods, Software Requirements Analysis, Software Systems, Verification and Validation (Software), Subsystems, Systems Architecture, Systems Integration, Software Verification, Integration Tests, Information Technology, Hardware Infrastructure
- **Published:** July 27, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9059541/software-systems-engineer-iii-sea

## About the Role

· Active U.S. Secret Security Clearance (adjudicated within the past 5 years)
· Bachelor of Science/Engineering degree in Computer Science, Computer Systems, or related degree.
· 10+ years of relevant experience, · Experience with systems engineering throughout the full development lifecycle, including requirements analysis, requirements allocation, system and software design, software implementation, software testing, system integration, field integration testing, and requirements verification
· Experience using DOORS and Cameo Enterprise Architecture (Cameo EA) to develop software and systems architecture models, including use case, activity, and sequence diagrams
· Experience writing Software Test Plans, Test Descriptions, and executing verification and validation testing
· Experience with embedded software and the ability to read code and verify implementation against Software Requirements Specifications (SRS)
· Experience integrating and testing systems, subsystem, software, and hardware components
· Aerospace or defense industry experience supporting system design, integration, and verification
· Familiarity in Writing Software Test Plans and Test Descriptions and running tests.
Preferred:
· Experience in multiple aerospace and defense technologies (e.g., sensors, navigation aids, guidance electronics, controls, propulsion, structures, platforms).
· Have technical knowledge in one or more military mission areas (e.g., Air, Land, Sea, Space, Cyber)
· Experience in assessing legacy system architecture and innovation for future potential technology development.

## Description

Seeking a Software Systems Engineer to support our Advance Weapons Business Unit. As a member of the software department, you'll get to define software requirements and functional decompose subsystem specifications.
Responsibilities
· Responsible for translating system/subsystem level software requirements into software level requirements for each CSCI.
· Work with System and Software engineers to develop software architecture models.
· Support Verification and Validation of software product to ensure all integrated CSCIs function as intended.


## Related Videos

- [Building a hypercar from scratch](https://www.wearedevelopers.com/videos/607-building-a-hypercar-from-scratch)
- [Rethinking Intelligence: AI, Accessibility, and the Future of Inclusive Work - Artur Ortega](https://www.wearedevelopers.com/videos/1377-rethinking-intelligence-ai-accessibility-and-the-future-of-inclusive-work-artur-ortega)
- [10M Data Records Lost, Underwater Computing, and Psychedelic Fish - Matthias Geniar](https://www.wearedevelopers.com/videos/1908-10m-data-records-lost-underwater-computing-and-psychedelic-fish-matthias-geniar)
- [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers)
- [Breaking the Hardware Mindset: Overcoming Barriers to System-Level Innovation](https://www.wearedevelopers.com/videos/1635-breaking-the-hardware-mindset-overcoming-barriers-to-system-level-innovation)
- [Model Based Systems Engineering in an Agile Product Development Process](https://www.wearedevelopers.com/videos/68-model-based-systems-engineering-in-an-agile-product-development-process)

## Related Articles

- [What is Software Engineering?](https://www.wearedevelopers.com/magazine/289-what-is-software-engineering)
- [Software Engineer Career: Things You Should Know](https://www.wearedevelopers.com/magazine/143-software-engineer-career-things-you-should-know)
- [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers)
- [What Jobs Can You Get with a Software Engineering Degree?](https://www.wearedevelopers.com/magazine/398-what-jobs-can-you-get-with-a-software-engineering-degree)
- [Is Software Engineering Hard?](https://www.wearedevelopers.com/magazine/448-is-software-engineering-hard)
- [Best Countries for Software Engineers](https://www.wearedevelopers.com/magazine/267-best-countries-for-software-engineers)