Systems Engineer - Expeditionary Unmanned Systems (ExUS) (Hybrid) - 29763

Apply now »

Date: Aug 10, 2026

Location: San Diego, CA, California, United States

Company: HII's Mission Technologies division

Requisition Number: 29763 

Required Travel: 0 - 10%

Employment Type: Full Time/Hourly/Non-Exempt

Anticipated Salary Range: $99,960.00 - $145,000.00 

Security Clearance: Secret  

Level of Experience: Mid 

 

Meet HII’s Mission Technologies Division
Our team of more than 7,000 professionals worldwide delivers all-domain expertise and advanced technologies in service of mission partners across the globe. Mission Technologies is leading the next evolution of national defense – the data evolution - by accelerating a breadth of national security solutions for government and commercial customers. Our capabilities range from C5ISR, AI and Big Data, cyber operations and synthetic training environments to fleet sustainment, environmental remediation and the largest family of unmanned underwater vehicles in every class. Find the role that’s right for you. Apply today. We look forward to meeting you.

To learn more about Mission Technologies, click here for a short video: https://vimeo.com/732533072

Leadership Mindset at HII – Mission Technologies

Leadership at HII is a mindset, not a title. Through our Leadership Capability Framework, we define how every employee grows, leads, and contributes—regardless of role. It sets the standard for how you can develop yourself and what you can expect from leaders across our organization. We look for candidates who want to grow in alignment with these capabilities:

  • Know & Grow Your People – Commit to learning and supporting team success.
  • Build Relationships – Communicate openly, collaborate well, and build trust.
  • Take Ownership – Deliver on commitments and take pride in your work.
  • Customer First – Focus on the mission and those we serve.
  • Shape the Future – Bring ideas, curiosity, and continuous improvement.
  • Act with Urgency – Take initiative and follow through with purpose.

These capabilities guide how all employees contribute to our shared success across Mission Technologies.

Summary

HII Mission Technologies is seeking an experienced Senior Software Developer to support the Expeditionary Unmanned Systems (ExUS) portfolio under NIWC Pacific. This role includes a Hybrid schedule (averaging 1–2 days onsite per week). Hybrid participation is ideal for team collaboration and program integration; however, fully remote may be considered depending on experience and location outside the local area.

 

The Senior Software Developer will design, implement, test, and integrate advanced software components for COIN/Nexus, Common Control System (CCS) modules, and other UUV command‑and‑control capabilities used across the Navy’s ExUS programs. This role supports mission‑critical unmanned underwater vehicle operations and requires strong C#, Angular, UI development skills, and experience with Navy maritime software environments.

 

You will collaborate closely with NIWC PAC technical staff, fleet operators, systems engineers, and government stakeholders to ensure system readiness and the successful transition of new capabilities to the field. #LI-MJ1

Key Job Responsibilities

  • Develop, maintain, and enhance software components supporting COIN/Nexus and ExUS command‑and‑control systems.
  • Design, build, and optimize C# applications and Angular 10+ front‑end interfaces.
  • Develop software modules, plug‑ins, and integration components supporting MK18 Mod 1/2, R&D platforms, CCS, and ExUS tools.
  • Support software verification, validation, debugging, and test readiness for release cycles.
  • Participate in Government and Fleet test events to demonstrate new capabilities.
  • Develop test plans, test reports, and contribute to CONOPS development for ExUS systems.
  • Create, edit, and maintain SOPs, system documentation, and training materials.
  • Support technical exchanges, community-of-interest forums, and program reviews.
  • Produce briefs, analysis reports, presentations, engineering change proposals (ECPs), and technical documentation.
  • Review engineering, technical, and acquisition documents and provide feedback.
  • Assist with coordination of engineering, logistics, and program documentation for both CONUS and OCONUS outfitting, integration, and POR activities.
  • Collaborate with NIWC PAC, ISEA, and fleet operators to transition new software capabilities.
  • Deliver “brief-ready” products requiring no government rework.

What you must have

  • 5 years of relevant experience with a Bachelor’s degree in Computer Science, Engineering, Information Technology, or a closely related technical field (e.g., Software Engineering, Computer Engineering, Systems Engineering); 3 years with a Master’s degree; 0 years with a PhD or Juris Doctorate; or 9 years of relevant experience with a High School Diploma or equivalent.
  • Hands‑on C# software development experience.
  • Strong software engineering fundamentals, including design principles, debugging, and code quality best practices.
  • Experience developing software within distributed, modular, or service‑oriented architectures.
  • Experience developing front‑end applications using Angular 10 or higher.
  • Must have a current or active DoD SECRET clearance.

Preferred Qualficiations

  • Experience developing software for the COIN/Nexus program.
  • Experience supporting Navy UUV systems such as MK18 Mod 1/Mod 2, Lionfish, Viperfish, or Mobile Gateway Buoy systems.
  • Experience developing CCS plug‑ins or components for COIN/Nexus and ExUS architectures.
  • Familiarity with distributed systems, SOA, or SAE UCS architecture.
  • Understanding of secure coding practices and DoD configuration‑management standards.
  • Experience supporting test events, field demos, or multi‑agency technical exchanges.
  • Ability to produce polished, brief‑ready deliverables for senior government audiences.
  • Experience supporting CONUS/OCONUS deployments or system integration.


The listed salary range for this role is intended as a good faith estimate based on the role's location, expectations, and responsibilities. When extending an offer, HII's Mission Technologies division takes a variety of factors into consideration which include, but are not limited to, the role's function and a candidate's education or training, work experience, and key skills.

HII is more than a job - it’s an opportunity to build a new future. We offer competitive benefits such as best-in-class medical, dental and vision plan choices; wellness resources; employee assistance programs; Savings Plan Options (401(k)); financial planning tools, life insurance; employee discounts; paid holidays and paid time off; tuition reimbursement; as well as early childhood and post-secondary education scholarships. Bonus/other non-recurrent compensation is occasionally offered for qualified positions, and if applicable to this role will be addressed by the recruiter at the screening phase of application.

Why HII
We build the world’s most powerful, survivable naval ships and defense technology solutions that safeguard our seas, sky, land, space and cyber. Our workforce includes skilled tradespeople; artificial intelligence, machine learning (AI/ML) experts; engineers; technologists; scientists; logistics experts; and business administration professionals.

Recognized as one of America’s top large company employers, we are a values and ethics driven organization that puts people’s safety and well-being first. Regardless of your role or where you serve, at HII, you’ll find a supportive and welcoming environment, competitive benefits, and valuable educational and training programs for continual career growth at every stage of your career.

Together we are working to ensure a future where everyone can be free and thrive.
All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, physical or mental disability, age, or veteran status or any other basis protected by federal, state, or local law.

Do You Need Assistance? 
If you need a reasonable accommodation for any part of the employment process, please send an e-mail to buildyourcareer@hii-co.com and let us know the nature of your request and your contact information. Reasonable accommodations are considered on a case-by-case basis. Please note that only those inquiries concerning a request for reasonable accommodation will be responded to from this email address. Additionally, you may also call 1-844-849-8463 for assistance. Press #3 for HII Mission Technologies.