Systems Engineer II-III On-Site
Listed on 2026-01-17
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Engineering
Systems Engineer, Software Engineer
S3I Engineering provides specialty engineering services, systems integration, and operational support to US Government agencies. Our technical expertise covers multiple facets of the Software, Systems, Cyber, and Hardware Engineering disciplines. Our engineers have expert knowledge of the critical mission management systems and their deployment on various DoD and DHS platforms.
S3I is currently looking for a senior or principal Systems Engineer. You will be supporting a new DoD operational capability. From testing capabilities to optimizing performance bottlenecks and improving reliability, your expertise will play a pivotal role in ensuring mission success. If you love to solve hard complex problems and are willing to embrace the challenge, embark on a career where every day brings new opportunities to push the boundaries of what is possible.
Join us and be a part of shaping the future.
The ideal candidate possesses a Bachelor of Science Degree, or equivalent years of experience, in Engineering or other technical fields such as Computer Science, Computer Hardware, Mathematics, or Physics. This work requires a DOD Secret clearance. Candidates must meet the criteria to obtain one.
Job TitleSenior or Principal Systems Engineer (II/III)
Work ScheduleM-F, 8AM-5PM, Flexible
Job ClassificationExempt
Primary LocationCalifornia, MD
Salary Range$115,000 to $300,000 depending on experience and skillset
Ideal Candidate- Strong computer hardware and software troubleshooting experience using the Linux command line
- Experience building operational Linux computer systems in a secured defense environment
- The ability to reverse engineer complex systems to aid in testing and diagnostics
- Familiarity with both 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 IL5 environments and higher
- Outstanding organizational skills in a complex and dynamic environment
- Highly articulate communication skills when describing complex software behavior and function
- The 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
- Support government labs and aircraft platforms to identify problems, provide solutions and communicate with the software development team
- Perform independent investigation to reproduce problems reported in fielded systems
- Participate in design reviews and provide input on requirements derivation
- Work directly with government personnel and other partners to provide actionable solutions
- Work with various industry partner teams to troubleshoot, investigate, and isolate complex problems
- Work to continually validate and identify gaps in testing methodology
- Configure test bench systems to test software requirements
- Provide validation of the findings of root cause analysis and offer 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 software configuration management tools such as Git or IBM Rational Clearcase
- Demonstrated strong software troubleshooting skills
- Knowledge of DoD mission systems, sensors, and networks
- Bachelor of Science degree in an Engineering or technical field
- Ability to assess and troubleshoot complex problems involving multiple systems
- US Citizenship and the ability to obtain a DoD Secret Clearance is required
- Must be able to lift and carry ~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, LLC is a small business supporting the US Navy. S3I offers a generous benefits package including Medical and Dental benefits, Holiday and Paid Leave, 401K with Matching, and a Profit-Sharing Plan. S3I Employee compensation is highly competitive and commensurate with experience. If you have any of these skills, we encourage you to apply!
EEOWomen, 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 a reasonable accommodation to individuals with disabilities and disabled Veterans who need assistance to apply.
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