Mission Systems Engineer I — Testing & Integration

S3I Engineering; Lexington Park (MD); On-site; USD 90,000 - 130,000; Full time

Benefits offered by this job

Medical and Dental benefits

401K with Matching

Profit‑Sharing Plan

Job summary

S3I Engineering in Lexington Park, MD, is hiring a Systems Engineer I to support development, integration, testing, and analysis of mission systems across DoD platforms. You will troubleshoot, configure, test, and document, working with government labs and aircraft environments.

The role emphasizes basic field testing, lab work, and collaboration with senior engineers to ensure mission success while following cybersecurity practices and government regulations.

Qualifications

• Foundational Linux troubleshooting and system analysis experience.
• Ability to configure basic computer systems in a Linux environment with multiple services.
• Eligibility for DoD 8570/8140 compliance within 6 months of starting.
• Strong organizational and communication skills.
• US Citizenship and eligibility for a TS/SCI clearance.

Responsibilities

• Assist in installation, configuration, and testing of mission systems with related sensors and integrated software in government labs and aircraft environments.
• Conduct basic troubleshooting using Linux command-line tools and diagnostic procedures.
• Configure test bench systems to validate software requirements and system behavior.
• Document root cause indicators and reproduce system anomalies.
• Participate in design reviews under supervision and provide technical observations.
• Prepare field test reports and summaries for senior engineers and government personnel.
• Follow DoD and DCSA cybersecurity practices during configuration and testing.

Skills

Linux troubleshooting

System analysis

Organizational skills

Communication skills

US Citizenship / TS/SCI eligibility

Defense knowledge

Education

Bachelor of Science in Engineering / related technical field

Tools

Git

Minotaur systems

Job description

S3I Engineering in Lexington Park, MD, is hiring a Systems Engineer I to support development, integration, testing, and analysis of mission systems across DoD platforms. You will troubleshoot, configure, test, and document, working with government labs and aircraft environments.

The role emphasizes basic field testing, lab work, and collaboration with senior engineers to ensure mission success while following cybersecurity practices and government regulations.