{"id":702297,"url":"https://alion.io/job/xcimer-senior-platform-engineer","title":"Senior Platform Engineer","company":{"id":685639,"name":"Xcimer Energy","domain":"xcimer.energy","url":"https://alion.io/company/xcimer","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"A","score":93,"open_postings":14,"ghost_share":0,"stale_share":0.071,"repost_share":0,"time_to_fill_p50_days":87,"computed_at":"2026-11-04T06:34:25Z"}},"role":"DevOps","role_family":"DevOps","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Denver, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":168000,"max":198000,"currency":"USD","period":"year","gross":null,"usd_annual":198000},"salary_estimate":null,"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Ansible","optional":false},{"name":"AWS","optional":false},{"name":"Azure","optional":false},{"name":"C++","optional":false},{"name":"GCP","optional":false},{"name":"HPC","optional":false},{"name":"Linux","optional":false},{"name":"Python","optional":false},{"name":"Rust","optional":false},{"name":"Terraform","optional":false},{"name":"Docker","optional":true},{"name":"Kubernetes","optional":true},{"name":"LDAP","optional":true}],"status":"live","first_seen_at":"2026-08-29T03:44:28Z","employer_posted_date":"2026-08-29","last_verified_at":"2026-11-04T11:08:08Z","board_verified":true,"closed_at":null,"days_open":67,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":67},"description":"Xcimer Energy leverages decades of research on Inertial Fusion Energy (IFE) combined with groundbreaking new laser architecture. Our mission is to deploy fusion power plants to meet global decarbonization goals as fast as possible. Xcimer has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supported by leading investors, Xcimer is uniquely positioned to deliver limitless, clean, fusion power to combat climate change. Join us in powering a better world with inertial fusion!\nThis is a full-time, onsite role based at our headquarters in Denver, CO.\nAs a Senior Platform Engineer you will design and ship the systems, services, and paved-path tooling that let researchers and engineers move fast. The platform spans data analysis pipelines, the data warehouse, dashboards, research code environments, and the friendly interfaces that expose HPC simulation to non-specialists: a broad surface where great engineering directly accelerates discovery.\nThis is a hands-on, high-impact role. You will architect and write systems, treat internal tooling as a product with real users, mentor junior engineers, and make deliberate tradeoffs between speed and robustness in an R&D environment where both matter. You'll work closely with physicists, controls engineers, and software architects to turn hard research problems into reliable, reusable infrastructure.\nIn this role, you will build the platform behind Xcimer's path to commercially viable inertial fusion energy. You'll let PhDs and engineers spend their time on physics and engineering instead of infrastructure, with direct access to simulation, data, and analysis through tools that work reliably. Every researcher's productive day depends on the platform you build. This is a strategic leadership position tied directly to the company's mission. We are looking for our engineers to apply their technical expertise, problem solving skills, and dedication to quality to positively impact the future of energy!\nResponsibilities\nInternal Developer Platform\nBuild and own the internal developer platform as a product, so researchers and engineers can provision what they need and start work quickly.\nDesign and build the services behind data analysis pipelines, the data warehouse, dashboards, research code environments, and the web apps that expose HPC simulation to non-specialists.\nExtend Open OnDemand and related portals, and build what's missing where off-the-shelf tools fall short.\nOwn AI developer tooling, its budget, and provisioning workflows.\nSet and maintain standards that give engineers autonomy while keeping the platform coherent and governable.\nSystems & Software Engineering\nArchitect and write platform services, control planes, APIs, and data-pipeline frameworks.\nBuild reusable components and set software standards that match the needs of active R&D projects.\nTranslate requirements from Physics, Engineering, and Controls teams into systems that scale and stay maintainable.\nTreat reliability, observability, and cost as design requirements.\nHPC & Infrastructure\nProvide the platform layer over HPC clusters, job scheduling, and distributed filesystems so researchers can run simulation and analysis themselves.\nBuild and maintain secure cloud infrastructure (AWS/GCP/Azure), managed as infrastructure-as-code.\nBuild observability, alerting, and incident-response systems across on-prem and cloud resources.\nManage cloud costs proactively through architecture choices, reserved capacity, and observability.\nLead migrations, upgrades, and modernization with minimal disruption to active experiments.\nDocumentation & Mentorship\nWrite clear documentation, runbooks, and operational procedures so others can operate and extend the platform.\nMentor junior platform engineers and the cross-functional engineers who build on the platform.\nSet technical direction for infrastructure as code, observability, and system resilience.\nQualifications\nEducation: Bachelor's degree in Computer Science, Engineering, Physics, Applied Mathematics, or related field; advanced degree preferred.\n Experience: 7+ years of experience in platform, infrastructure, or software engineering, including building internal tools or platforms used by other engineers.\nStrong software engineering fundamentals. Proficiency in Python, Rust, and/or C++.\nExperience building internal platforms or tooling that measurably improved team productivity.\nHands-on experience with Linux and infrastructure automation (Ansible, Terraform, or equivalent).\nExperience with cloud infrastructure (AWS/GCP/Azure). Familiarity with HPC clusters and job scheduling is a plus.\nA track record of designing systems for reliability, observability, and scale.\nExperience with containerization and orchestration (Kubernetes, Docker, or similar).\nExperience mentoring engineers and leading cross-functional projects.\nClear communication, including explaining technical tradeoffs to non-technical colleagues.\nMust be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee of granted asylum\nDesired\nExperience building data platforms, data warehouses, or analytics and dashboard infrastructure.\nPrior experience in scientific computing or research environments.\nFamiliarity with Open OnDemand or similar research computing portals.\nExperience with secure enclave architectures, identity management (OIDC, LDAP), or export-controlled data.\nDomain background in manufacturing, experimental physics, or fusion energy. We don't require it - strong generalists ramp quickly here - but a head start is welcome.\nExperience managing and optimizing cloud infrastructure.","description_format":"text","description_chars":5723,"description_truncated":false,"requirements":{"experience_years_min":7,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":true,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Nuclear Energy","Lasers & Laser Systems","Air Defense"],"lifecycle":[{"event":"open","at":"2026-09-11T03:11:33Z"}],"visa":[],"liveness":{"score":51,"band":"ok","label":"Likely open","p_open":1,"p_active":0.847,"p_room":0.6,"age_days":67,"expected_fill_days":87,"reasons":["conf:4","win:late","crowd:"],"computed_at":"2026-11-04T06:34:25Z"},"pay":{"stated_usd_annual":198000,"is_top_pay":true},"html_url":"https://alion.io/job/xcimer-senior-platform-engineer","json_url":"https://alion.io/job/xcimer-senior-platform-engineer.json","meta":{"generated_at":"2026-11-04T13:07:47Z","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":19873,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-05T00:00:00Z"}},"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":685639},"rest":"https://alion.io/mcp/rest/get_company?id=685639"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fxcimer-senior-platform-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%2Fxcimer-senior-platform-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%2Fxcimer-senior-platform-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/xcimer-senior-platform-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fxcimer-senior-platform-engineer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":702297}},{"tool":"search_jobs","arguments":{"company":"xcimer.energy","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":702297},"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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