{"id":2566055,"url":"https://alion.io/job/i2xisys-software-simulation-engineer","title":"Software Simulation Engineer","company":{"id":4423426,"name":"I2Xisys","domain":"i2xisys.com","url":"https://alion.io/company/i2xisys","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"iCIMS","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"staff","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Houston, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":153000,"max_usd":278000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":1372},"experience_years_min":9,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"C++","optional":false},{"name":"Linux","optional":false},{"name":"MATLAB","optional":false},{"name":"Python","optional":false},{"name":"Simulink","optional":false}],"status":"live","first_seen_at":"2026-10-14T21:57:30Z","employer_posted_date":"2026-10-14","last_verified_at":"2026-10-15T17:17:56Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Minimum Clearance Required\nUS CitizenResponsibilities\nI2X Technologies is a reputable technology services company to the Federal Government. Whether the focus is on space exploration, national security, cyber security, or cutting-edge engineering applications, I2X is ready to offer you the chance to make a real-world impact in your field and for your country. We provide long-term growth and development. Headquartered in Colorado, I2X is engaged in programs across the country and in more than 20 states. Our programs support multiple Federal agencies, the Department of Defense and often focused on the space initiatives of our government customers.\nI2X Technologies is seeking a Software Simulation Engineer to support ongoing activities for a customer in Littleton, CO. This position will be on site.\nResponsibilities:\nTask 1: Simulation Software Systems Engineering\nPerform Docking Ground Software Systems Engineering for SIM for Orion MPCV, Artemis 3 Spacecraft. This work shall entail performing development of ground capabilities, software design, software production and software test. Knowlege in OrionSim, Orion Test Labs, ODN STE capabilities\nTask 2: Simulation Software Production\nPerform Docking SIM software development and unit/functional testing using Agile methodologies for Orion MPCV Spacecraft as directed by the technical POC.\nTask 3: Simulation Software Test & VerificationPerform Docking SIM software verification and test activities using Agile methodologies for Orion MPCV Spacecraft and spacecraft testing activities as directed by the technical POC. This work entails developing test procedures, test cases, and dry runs. This support may also include tracking requirements to code (when a piece of code changes identify what test cases need to be run to check out the change), test cases, rig environment, special set up required, etc. and developing user interface that is easy for the testers to access/use in order to update latest status, working with DOORS team to interface internal CM tracking system with DOORS.\nDeliverables\nMonthly reporting on status of all items above, as requested\nQualifications\nBachelors Degree and 9+ years of experience\n5+ years of experience on a spacecraft\nExtensive experience in C++, Python\nExperience with full software development lifecycle\nExperience with real-time 6 DoF simulation\nExtensive experience debugging and implementing best software engineering practices in large-scale systems\nExtensive experience with Linux development environment\nexperience with Perforce\nExperience with aerospace engineering concepts - fluid mechanics, orbital dynamics, etc.\nDesired experience with Matlab/Simulink\nExperience in a C++ software simulation environment\nExperience with DOORS\nAbility to work on site in Littleton, CO\nEssential Requirements:\nUS Citizenship is required.\nIn compliance with Colorado’s Equal Pay for Equal Work Act, the annual base salary range for this position is listed . Please note that the salary information is a general guideline only. I2X Technologies considers factors such as (but not limited to) scope and responsibilities of the position, candidate’s work experience, education/training, key skills, internal peer equity, as well as, market and business considerations when extending an offer.\nPhysical Demands:\nThe physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job with or without reasonable accommodation.\nWhile performing the duties of this job, the employee will regularly sit, walk, stand and climb stairs and steps. May require walking long distance from parking to work station. Occasionally, movement that requires twisting at the neck and/or trunk more than the average person, squatting/ stooping/kneeling, reaching above the head, and forward motion will be required. The employee will continuously be required to repeat the same hand, arm, or finger motion many times. Manual and finger dexterity are essential to this position. Specific vision abilities required by this job include close, distance, depth perception and telling differences among colors. The employee must be able to communicate through speech with clients and public. Hearing requirements include conversation in both quiet and noisy environments. Lifting may require floor to waist, waist to shoulder, or shoulder to overhead movement of up to 20 pounds. This position demands tolerance for various levels of mental stress.\nI2X Technologies is an Engineering and Information Technology Company focused on providing Services to the Federal and State Government. I2X offers a competitive compensation program and comprehensive benefits package to our employees.","description_format":"text","description_chars":4738,"description_truncated":false,"requirements":{"experience_years_min":9,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Equity"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Space & Aerospace"],"lifecycle":[{"event":"open","at":"2026-10-14T21:57:30Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":47,"reasons":["conf:0","win:early"],"computed_at":"2026-10-15T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/i2xisys-software-simulation-engineer","json_url":"https://alion.io/job/i2xisys-software-simulation-engineer.json","meta":{"generated_at":"2026-10-15T19:40:28Z","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":29816,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-16T00:00:00Z"}},"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":4423426},"rest":"https://alion.io/mcp/rest/get_company?id=4423426"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fi2xisys-software-simulation-engineer"},{"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%2Fi2xisys-software-simulation-engineer"},{"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%2Fi2xisys-software-simulation-engineer"},{"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/i2xisys-software-simulation-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fi2xisys-software-simulation-engineer"}]}