{"id":2427133,"url":"https://alion.io/job/ses-senior-engineer-constellation-simulation-iris2","title":"(Senior) Engineer, Constellation Simulation, IRIS2","company":{"id":54618,"name":"SES","domain":"ses.com","url":"https://alion.io/company/ses-com","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"SuccessFactors","truth_index":null},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Betzdorf, Luxembourg"],"countries":["LU"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":77000,"max_usd":173000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":8444},"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Azure","optional":false},{"name":"Azure DevOps","optional":false},{"name":"CI/CD","optional":false},{"name":"MATLAB","optional":false},{"name":"Python","optional":false},{"name":"Rust","optional":false}],"status":"live","first_seen_at":"2026-10-13T08:05:40Z","employer_posted_date":"2026-10-13","last_verified_at":"2026-11-05T12:32:26Z","board_verified":false,"closed_at":null,"days_open":25,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":25},"description":"(Senior) Engineer, Constellation Simulation, IRIS2\nThe job responsibilities outlined in this document are not exhaustive and may evolve over time and be reviewed according to business needs.\nProgramme Description\nIRIS² is the new European Union secure satellite communications constellation. This project is the European Union's answer to the pressing challenges of tomorrow to provide secure connectivity services and enhanced communication capacities to the EU and its Member States as well as to governmental users, private companies and European citizens while ensuring high-speed internet broadband to cope with connectivity dead zones.\nSES - together with other consortium partners and core members - was selected by European Commission to build and to operate the IRIS² multi-orbit satellite constellation.\nAs the IRIS² programme enters its next phase, robust simulation and analytical capabilities are required to support constellation design, product development, service definition, infrastructure planning, and engineering trade-off decisions.\nRole description summary\nWe are looking for a highly capable Constellation Simulation Engineer to develop and maintain software models of satellite constellations, communications links, ground infrastructure, and diverse populations of user terminals.\nThe successful candidate will use these simulation capabilities to assess system performance, evaluate alternative constellation and infrastructure designs, and determine how effectively proposed solutions address forecast market demand. The role combines satellite communications engineering, dynamic system modelling, software development, data analysis, and technical decision support.\nThe engineer will transform large and complex simulation outputs into clear, actionable insights using analytical and visualization tools. They will work closely with service and system engineering teams for ground and space segments to ensure that simulations represent relevant business and technical assumptions and that their results can support architecture and investment decisions.\nThe role also includes responsibility for the quality and operational sustainability of the simulation software, including automated testing, configuration control, documentation, and management of CI/CD processes on Microsoft Azure in collaboration with the SES IT team.\nPRIMARY RESPONSIBILITIES / KEY RESULT AREAS\nConstellation and Communications Simulation\nDevelop, maintain, and validate software simulating satellite constellations and their communications links to diverse populations of user terminals.\nModel relevant space, ground, network, traffic, and service elements, including orbital dynamics, coverage, visibility, link budgets, interference, capacity, routing, gateways, and user demand.\nRepresent multi-orbit and time-varying system behaviour at an appropriate level of fidelity.\nIntegrate technical inputs from system engineering, payload, ground segment, and service teams.\nEnsure simulation assumptions, constraints, limitations, and interfaces are clearly defined and traceable.\nAssess model accuracy through analytical checks, reference cases, sensitivity studies, and comparison with independent data or tools.\nSystem and Infrastructure Trade-Off Analysis\nSupport trade-off analyses across market demand, service performance, product definitions, constellation architecture, satellite capabilities, spectrum, gateways, and network infrastructure.\nEvaluate alternative system configurations and identify solutions that balance technical performance, demand capture, operational constraints, cost, and implementation risk.\nQuantify system capacity, service availability, resource utilization, bottlenecks, and demand satisfaction.\nConduct sensitivity and scenario analyses to identify the assumptions and design parameters with the greatest influence on system performance.\nProvide evidence-based recommendations to support architecture selection, infrastructure planning, and programme decisions.\nClearly communicate the implications, uncertainties, and limitations associated with simulation results.\nData Engineering, Analysis, and Visualization\nProcess, validate, and analyse large datasets originating from simulations, market-demand models, engineering databases, and external sources.\nBuild reliable, automated and repeatable data-processing workflows for scenario preparation, execution, aggregation, and reporting.\nDevelop visualizations, dashboards, maps, and engineering summaries that make complex system behaviour understandable and actionable.\nIdentify trends, anomalies, constraints, and opportunities within simulation outputs.\nMaintain reproducibility, and traceability from source inputs to reported conclusions.\nTailor analytical outputs to technical, programme, product, and management audiences.\nSimulation Software Engineering\nDevelop modular, maintainable, tested, and documented simulation software, primarily using Python, MATLAB, or suitable lower-level languages such as Rust.\nDefine clear software interfaces and reusable components for constellation, link, traffic, resource, and reporting models.\nImprove simulation performance, scalability, and reliability for computationally intensive scenarios and large datasets.\nEvaluate new modelling approaches, algorithms, libraries, and computing technologies where they offer demonstrable value.\nCI/CD and Azure DevOps\nManage and continuously improve the simulation software CI/CD process on Microsoft Azure in collaboration with the SES IT team.\nMaintain automated pipelines for build, test, validation, packaging, and deployment activities.\nSupport controlled software releases and reproducible execution environments.\nCollaboration and Communication\nWork closely with system engineering, satellite engineering, ground segment, service, operations, and IT teams.\nTranslate business and engineering questions into well-defined simulation experiments and measurable evaluation criteria.\nChallenge assumptions constructively and ensure that conclusions are supported by appropriate evidence.\nCoordinate model inputs and interfaces with internal stakeholders and partners where required.\nCommunicate progress, risks, dependencies, and technical findings clearly and promptly.\nQualifications Background and Experience\nBachelor’s or Master’s degree in Computer Science, Telecommunications Engineering, Aerospace Engineering, Applied Mathematics, or a related discipline.\nMinimum of three years of experience modelling complex, dynamic systems.\nMinimum of three years of software-development experience using Python, MATLAB, or comparable languages.\nGood knowledge of satellite constellations and satellite communications systems.\nUnderstanding of orbital geometry, coverage, radio-frequency links, link budgets, interference, capacity, and communications-system performance.\nExperience designing and performing engineering trade-off, sensitivity, or optimization studies.\nExperience handling large datasets and deriving insights through analytical and visualization libraries.\nAbility to develop clear, maintainable, tested, and documented technical software.\nExperience with source control and collaborative software-development workflows.\nExperience documenting technical assumptions, methods, results, and limitations.\nFluency in English; proficiency in another language is considered an asset.\nThe following experience would be considered an advantage:\nExperience with multi-orbit constellation modelling, telecommunications network simulation, resource allocation, or traffic-demand modelling.\nKnowledge of optimization techniques, operations research, numerical methods, or geospatial analysis.\nExperience with scientific-computing and data-analysis libraries in Python or MATLAB.\nExperience developing high-performance software in Rust or another lower-level language.\nExperience with Azure DevOps, Microsoft Azure, automated testing, and CI/CD pipelines.\nExperience using containers, infrastructure automation, or reproducible development environments.\nFamiliarity with cloud or distributed computing for large simulation workloads.\nExperience working in satellite, telecommunications, aerospace, or other complex system-engineering programmes.\nOther key requirements / comments\nEligibility for ESA/EU SECRET personal security clearances is essential. Candidates must be prepared to undergo a security clearance procedure, as this position may require holding such a clearance\nWilling to work at least 60% onsite from office\nTravel as required for project realization purposes\nSES is an Equal Opportunity and Affirmative Action Employer\n\nSES and its Affiliated Companies are committed to providing fair and equal employment opportunities to all. We are an Equal Opportunity employer and will consider all qualified applicants for employment without regard to race, color, religion, gender, pregnancy, sex, sexual orientation, gender identity, national origin, age, genetic information, protected veteran status, disability, or any other basis protected by local, state, or federal law.\nFor more information on SES, click here.","description_format":"text","description_chars":9110,"description_truncated":false,"requirements":{"experience_years_min":3,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":true,"languages":[{"language":"English","level":"Advanced (C1)","optional":false}]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Satellite Communications","Satellite Manufacturing"],"lifecycle":[{"event":"open","at":"2026-10-13T08:05:40Z"}],"visa":[],"liveness":{"score":22,"band":"cold","label":"Long shot","p_open":1,"p_active":0.626,"p_room":0.35,"age_days":24,"expected_fill_days":10,"reasons":["conf:41","velocity","win:tail"],"computed_at":"2026-11-07T05:47:08Z"},"pay":null,"html_url":"https://alion.io/job/ses-senior-engineer-constellation-simulation-iris2","json_url":"https://alion.io/job/ses-senior-engineer-constellation-simulation-iris2.json","meta":{"generated_at":"2026-11-07T22:18:49Z","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":36608,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-08T00:00:00Z"}},"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":54618},"rest":"https://alion.io/mcp/rest/get_company?id=54618"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fses-senior-engineer-constellation-simulation-iris2"},{"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%2Fses-senior-engineer-constellation-simulation-iris2"},{"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%2Fses-senior-engineer-constellation-simulation-iris2"},{"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/ses-senior-engineer-constellation-simulation-iris2\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fses-senior-engineer-constellation-simulation-iris2"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":2427133}},{"tool":"search_jobs","arguments":{"company":"ses.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":2427133},"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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