{"id":2984737,"url":"https://alion.io/job/castelion-human-resources-generalist","title":"Human Resources Generalist","company":{"id":1795053,"name":"Castelion","domain":"castelion.com","url":"https://alion.io/company/castelion","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":null},"role":"HR","role_family":"HR","seniority":"junior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":[],"countries":[],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":50000,"max_usd":97000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":1805},"experience_years_min":2,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-10-19T22:37:26Z","employer_posted_date":"2026-10-19","last_verified_at":"2026-10-24T19:27:57Z","board_verified":true,"closed_at":null,"days_open":4,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":4},"description":"Why Castelion, Why Now \nCastelion is moving incredibly fast to develop and deliver advanced defense systems at a time when execution matters more than ever. We believe focus, ownership, and excellence are decisive advantages - and we're building a world-class team to turn bold ideas into real capability. \nThis is a rare opportunity to join at an early stage, where you'll have significant ownership, collaborate with exceptional teammates, and make a direct, measurable impact on our mission and the future of the company - regardless of your function. \nRole Overview: \nThe Human Resources Generalist will play an important role in supporting the core people operations that enable our teams to do their best work-on the ground and beyond. \nYou’ll support the day-to-day execution of essential HR processes across onboarding, payroll, benefits administration, and people analytics. Partnering with HR and cross-functional teams, you’ll help maintain accurate, compliant, and employee-centric processes while contributing to operational improvements that support our rapidly growing workforce. \nResponsibilities & Outcomes: \nPayroll Support \nSupport accurate and timely payroll processing, ensuring employee pay information is complete and up to date. \nSupport and resolve routine payroll discrepancies and employee inquiries in a timely manner. \nFollow established payroll procedures to support compliance with multi-state wage and hour laws and applicable tax regulations. \nBenefits Administration \nAdminister day-to-day employee benefits programs, including health insurance, retirement plans, and leave management. \nRespond to employee benefits questions and coordinate with vendors to resolve enrollment, eligibility, and coverage issues. \nSupport open enrollment activities, including employee communications, enrollment tracking, and documentation. \nMaintain accurate benefits records and process employee enrollments, changes, and qualifying life events. \nAssist with benefits reporting and identify recurring employee questions or administrative challenges. \nPeople Analytics & HR Systems \nMaintain accurate employee records and ensure data integrity within the HRIS. \nProcess employee changes, including new hires, terminations, transfers, and compensation updates. \nGenerate routine HR reports and assist with data collection for workforce planning and operational needs. \nSupport compliance reporting, audits, and recordkeeping requirements. \nIdentify and correct data discrepancies to maintain accurate and reliable HR information. \nOnboarding \nCoordinate new hire onboarding activities to ensure Day 1 readiness, including offer letters, documentation, checklists, and compliance requirements. \nPartner with internal teams to facilitate a smooth and positive onboarding experience. \nTrack onboarding completion and follow up on outstanding tasks and documentation. \nRespond to new hire questions and provide guidance on HR policies, benefits, and onboarding processes. \nGather onboarding feedback and identify opportunities to improve the new hire experience. \nGeneral HR Operations \nSupport employee onboarding and offboarding processes, ensuring timely completion of required tasks and documentation. \nServe as a point of contact for routine employee inquiries related to HR policies, procedures, and programs. \nMaintain accurate, organized, and compliant employee records. \nCoordinate offboarding activities, including documentation, system updates, and internal notifications. \nAssist with HR compliance activities, including employee documentation, reporting, and audits. \nSupport the administration of HR programs and initiatives as assigned. \nIdentify opportunities to streamline routine HR processes and improve the employee experience. \nQualifications: \nBachelor’s degree in Human Resources, Business, or related field \n2+ years of HR experience with strong ownership of onboarding \nExperience working in a startup or high-growth environment \nProficiency with HRIS platforms (e.g., Rippling, ADP, Workday, or similar) \nAnalytical skills (dashboards/BI tools a plus) \nHigh attention to detail and ability to manage sensitive information \nSolid understanding of employment laws and compliance requirements \nPreferred Skills: \nExperience in aerospace, defense, manufacturing, or other regulated industries \nFamiliarity with government compliance environments (e.g., audits, reporting standards) \nExperience building or scaling HR processes \nHR certification (PHR, SHRM-CP, or equivalent) \nCastelion offers a generous benefits package. Please refer to the bottom of our Careers page for more details. \nOther Duties \nPlease note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change at any time with or without notice. \nAdditional Eligibility Requirements \nThis position may require access to classified information or restricted U.S. Government sites, systems, or information, as determined by the Company and/or applicable U.S. Government requirements. If the position is so designated, your employment in the role may be contingent upon your ability to obtain and maintain the required U.S. Government security clearance or other government authorization, and to satisfy any citizenship or other eligibility requirements imposed by applicable law, regulation, executive order, or government contract requirements. You will be notified if and when such requirements apply. \nAffirmative Action/EEO Statement \nCastelion is an Equal Opportunity Employer. We are committed to providing equal employment opportunities to all applicants and employees without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, genetic information, protected veteran status, or any other characteristic protected by applicable federal, state, or local law. \nCastelion is committed to providing reasonable accommodations to qualified individuals with disabilities throughout the application and hiring process. If you require a reasonable accommodation to complete an application, participate in the interview process, or otherwise participate in the hiring process, please contact . Requests for accommodation will be considered on an individual basis and handled in accordance with applicable law. \nCastelion is committed to fostering a workplace where employment decisions are based on qualifications, business needs, and the ability to perform the essential functions of the role, with or without reasonable accommodation. \nEAR/ITAR Requirements \nThis position requires access to export-controlled information, and as such, employment (or hiring of a contractor) is contingent upon the candidate’s ability to access all applicable export-controlled information without additional export licensing being required by the Bureau of Industry and Security and/or the Directorate of Defense Trade Controls.","description_format":"text","description_chars":7042,"description_truncated":false,"requirements":{"experience_years_min":2,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":true,"languages":[]},"benefits":["Health insurance","Retirement plans"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Missiles","Defense Manufacturing"],"lifecycle":[{"event":"open","at":"2026-10-21T08:14:48Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.9,"p_room":1,"age_days":4,"expected_fill_days":21,"reasons":["conf:2","velocity","win:early","comp:junior,brand"],"computed_at":"2026-10-24T06:02:35Z"},"pay":null,"html_url":"https://alion.io/job/castelion-human-resources-generalist","json_url":"https://alion.io/job/castelion-human-resources-generalist.json","meta":{"generated_at":"2026-10-24T22:16:57Z","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":32623,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-25T00:00:00Z"}},"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":1795053},"rest":"https://alion.io/mcp/rest/get_company?id=1795053"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcastelion-human-resources-generalist"},{"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%2Fcastelion-human-resources-generalist"},{"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%2Fcastelion-human-resources-generalist"},{"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/castelion-human-resources-generalist\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcastelion-human-resources-generalist"}]}