Systems Engineer II-III On-Site

S3I Engineering provides specialty engineering services, systems integration, and operational support to U.S. Government agencies. Our technical expertise spans the Software, Systems, Cyber, and Hardware Engineering disciplines, with a focus on mission‑management systems deployed on DoD and DHS platforms.

We are currently seeking a Senior or Principal Systems Engineer (II/III) to support a new DoD operational capability. This role involves testing, performance optimization, reliability improvement, and complex problem solving.

• Job Title: Senior or Principal Systems Engineer (II/III)
• Work Schedule: M‑F, 8 AM–5 PM, Flexible
• Job Classification: Exempt
• Primary
  
  Location:
  
  California, MD
• Salary Range: $115,000 to $300,000 depending on experience and skillset
• Security Clearance: Requires a DoD Secret clearance.

• Strong computer hardware and software troubleshooting experience using the Linux command line.
• Experience building operational Linux computer systems in a secured defense environment.
• Ability to reverse engineer complex systems to aid in testing and diagnostics.
• Familiarity with DoD and DCSA cybersecurity practices.
• General understanding of DoD sensor systems including EO/IR and radar.
• Familiarity with the mission system on one or more DoD platforms.
• Experience with cloud platforms, including DoD IL‑5 environments and higher.
• Outstanding organizational skills in a complex and dynamic environment.
• Highly articulate communication skills when describing complex software behavior and function.
• Ability to coach junior team members.
• Strong understanding of computing first principles.
• Demonstrated ability to break apart large and complex problems into smaller parts and delegate.
• Positive and professional attitude when working to solve customer problems.
• Bachelor of Science degree in Engineering or a related technical field.
• U.S. Citizenship and eligibility to obtain a DoD Secret clearance.

• Support government labs and aircraft platforms to identify problems, provide solutions, and communicate with software development teams.
• Perform independent investigations to reproduce problems reported in fielded systems.
• Participate in design reviews and provide input on requirements derivation.
• Work directly with government personnel and partners to deliver actionable solutions.
• Collaborate with industry partner teams to troubleshoot, investigate, and isolate complex problems.
• Continuously validate and identify gaps in testing methodology.
• Configure test bench systems to test software requirements.
• Validate findings of root‑cause analysis and recommend solutions.
• Lead, train, and refine software test events.
• Prepare field test reports and review and summarize findings.
• Provide technical guidance to peers.

• Previous Minotaur experience strongly desired.
• Software development experience in a Linux environment.
• Familiarity with configuration management tools such as Git or IBM Rational Clearcase.
• Strong software troubleshooting skills.
• Knowledge of DoD mission systems, sensors, and networks.
• Bachelor of Science degree in Engineering or technical field.
• Ability to assess and troubleshoot complex problems involving multiple systems.
• U.S. Citizenship and ability to obtain a DoD Secret clearance.

• Must be able to lift and carry approximately 40 lbs.
• Must be able to maneuver in confined spaces.
• Must be able to access various government locations, facilities, and vessels.
• Must have reliable transportation to travel between office and government facilities.

S3I Engineering offers a generous benefits package including Medical and Dental coverage, Holiday and Paid Leave, a 401(k) with matching, and a profit‑sharing plan. Compensation is highly competitive and commensurate with experience.

Women, minorities, individuals with disabilities, and Veterans are encouraged to apply. S3I Engineering is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, protected Veteran status, or disability status. S3I will provide reasonable accommodations to individuals with disabilities, including disabled Veterans, who require assistance to apply.