{"id":3242597,"url":"https://alion.io/job/s3iengineering-systems-engineer-ii-full-time-on-site-s3i-engineering","title":"Systems Engineer II (Full-Time, On-Site) - S3I Engineering","company":{"id":4419880,"name":"S3I Engineering","domain":"s3iengineering.com","url":"https://alion.io/company/s3iengineering","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"JazzHR","truth_index":null},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"middle","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Lexington Park, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":100000,"max":215000,"currency":"USD","period":"year","gross":null,"usd_annual":215000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Git","optional":false},{"name":"Linux","optional":false}],"status":"live","first_seen_at":"2026-10-25T17:20:27Z","employer_posted_date":"2026-10-25","last_verified_at":"2026-11-01T00:39:31Z","board_verified":true,"closed_at":null,"days_open":6,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":6},"description":"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, DHS, and other platforms.\nS3I is currently looking for entry and mid-level Systems Engineers. You will be working with cutting-edge technology to test complex mission management systems and their sensors. From testing capabilities to optimizing performance and 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.\nThe 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.\nThis work requires a DOD Secret clearance. Candidates must meet the criteria to obtain one.\nJob Title: Systems Engineer II\nWork Schedule: M-F, 8AM-5PM, Flexible\nJob Classification: Exempt\nPrimary Location: California, MD\nTravel: 12-18 weeks per year\nSalary Range: $100,000 to $215,000 depending on experience and skill set\nPosition Description: Systems Engineer II\nPosition Summary\nThe Systems Engineer II provides experienced engineering expertise supporting the development, integration, testing, and analysis of complex DoD mission systems, advanced sensors, and integrated software architectures. This role requires independent investigation, advanced troubleshooting, leadership in test events, and collaborative engagement with government personnel. This work requires deeper technical knowledge to support a small team during laboratory and field test activities in government labs and aircraft environments.\nKey Responsibilities\nLead and execute the installation, configuration, and testing on aircraft and in government laboratories to identify technical deficiencies and provide actionable recommendations to development teams.\nPerform independent reproduction and detailed analysis of field-reported system issues, including root cause validation.\nProvide expert input during design reviews and support requirements derivation and traceability activities.\nCollaborate directly with government personnel and partners to deliver reliable, technically sound solutions.\nTroubleshoot and isolate multi-system problems involving sensors, networks, mission software, and hardware.\nEvaluate, refine, and validate test methodologies to address gaps and ensure consistent system performance.\nConfigure complex test bench systems for advanced requirements testing.\nLead software test events, train junior staff, and guide peer engineers in technical practices.\nPrepare detailed field test reports and consolidate findings for leadership and government stakeholders.\nSupport tasking outside of normal business hours (Travel to support tasking approximately 12-18 weeks annually\nRequired Qualifications\nBachelor of Science in Engineering, Computer Science, Computer Hardware, Mathematics, Physics, or a related technical field; or equivalent experience.\nStrong experience with Linux-based troubleshooting, system diagnostics, and complex system configuration across separate interdependent projects.\nDemonstrated expertise in reverse engineering system behavior to support troubleshooting, testing, and diagnostic workflows.\nAbility to obtain DoD 8570/8140 compliance by certification or education within 6 months of starting.\nExperience with DoD sensor systems (EO/IR, Radar, SIGINT, etc.) and mission systems deployed on one or more DoD platforms.\nHighly articulate communication skills for conveying complex technical behaviors and system interactions.\nUS Citizenship and eligibility for TS/SCI clearance.\nAbility to access government facilities and travel between office and government sites as required.\nDesired Qualifications\nStrong software troubleshooting experience and familiarity with software development in Linux environments.\nProficiency with Git or other software configuration management tools.\nPrior Minotaur system experience is strongly desired.\nAbility to assess and troubleshoot complex, interconnected system issues.\nExperience working within DoD cloud environments such as IL5 or higher.\nPhysical Requirements\nMust be able to lift and carry approximately 40 lbs.\nMust be able to maneuver in confined spaces.\nMust be able to access government locations, facilities, and vessels.\nS3I 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!\nEEO\nWomen, 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.\nS3I will provide a reasonable accommodation to individuals with disabilities and disabled Veterans who need assistance to apply.","description_format":"text","description_chars":5602,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":true},"security_clearance":true,"languages":[]},"benefits":["401k plan"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-25T17:20:27Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":6,"expected_fill_days":29,"reasons":["conf:5","win:early"],"computed_at":"2026-11-01T06:10:25Z"},"pay":{"stated_usd_annual":215000,"is_top_pay":true},"html_url":"https://alion.io/job/s3iengineering-systems-engineer-ii-full-time-on-site-s3i-engineering","json_url":"https://alion.io/job/s3iengineering-systems-engineer-ii-full-time-on-site-s3i-engineering.json","meta":{"generated_at":"2026-11-01T08:09:54Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":12713,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-02T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":4419880},"rest":"https://alion.io/mcp/rest/get_company?id=4419880"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fs3iengineering-systems-engineer-ii-full-time-on-site-s3i-engineering"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fs3iengineering-systems-engineer-ii-full-time-on-site-s3i-engineering"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fs3iengineering-systems-engineer-ii-full-time-on-site-s3i-engineering"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/s3iengineering-systems-engineer-ii-full-time-on-site-s3i-engineering\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fs3iengineering-systems-engineer-ii-full-time-on-site-s3i-engineering"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3242597}},{"tool":"search_jobs","arguments":{"company":"s3iengineering.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3242597},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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