{"id":4239709,"url":"https://alion.io/job/celanese-senior-manager-human-resources","title":"Senior Manager, Human Resources","company":{"id":1832186,"name":"Celanese","domain":"celanese.com","url":"https://alion.io/company/celanese-com","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"iCIMS","truth_index":null},"role":"HR","role_family":"HR","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":["Irving, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-11-13T11:57:30Z","employer_posted_date":"2026-11-13","last_verified_at":"2026-11-13T12:19:14Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Overview\nThe HR M&A Sr Manager leads the people-related aspects of mergers, acquisitions, divestitures, and joint ventures. This role partners closely with Corporate Development, Legal, Finance, IT, and business leadership to ensure effective HR due diligence, integration planning, TSA and post-close execution. The ideal candidate brings strong HR expertise, project management discipline, and the ability to operate in complex, fast-paced deal environments.\nResponsibilities\nDeal Strategy & Due Diligence\nLead HR due diligence for M&A and divestiture activities, including workforce structure, compensation and benefits, labor relations, policies, compliance, and liabilities.\nIdentify people-related risks, cost synergies, and integration considerations; clearly document findings and recommendations.\nAdvise deal teams on HR-related transaction risks and mitigation strategies.\nIntegration & Separation Planning\nDevelop and execute HR integration or separation strategies aligned with deal objectives and timelines.\nLead planning for key HR workstreams, including: \nOrganizational structure and workforce transition\nTalent and retention planning\nCompensation, benefits, and payroll alignment\nHR systems, data, and process integration\nPolicies, compliance, and employment contracts\nCoordinate Day 1 readiness activities to ensure seamless employee transitions.\nChange Management & Communications\nPartner with Communications and Leadership to support change management strategies and employee messaging.\nSupport consistent, compliant, and timely employee communications throughout the transaction lifecycle.\nStakeholder Management\nServe as the primary HR point of contact for M&A-related activities.\nCollaborate cross-functionally with Legal, Finance, IT, Corporate Development and external advisors.\nInfluence senior leaders with data-driven insights and practical solutions.\nGovernance, Tools & Continuous Improvement\nEstablish and maintain HR M&A playbooks, templates, and best practices.\nTrack progress against milestones, risks, and dependencies.\nDrive post-integration reviews and incorporate lessons learned into future transactions.\nQualifications\nRequired Qualifications\nBachelor’s degree in Human Resources, Business, Finance, or a related field.\n7+ years of progressive HR experience, including direct involvement in M&A and divestitures.\nStrong knowledge of core HR disciplines (total rewards, employee relations, payroll and HR operations).\nProven project management skills in complex, cross-functional environments.\nExperience managing confidential and sensitive information with discretion.\nPreferred Qualifications\nMBA or Master’s degree in HR, Business, or related field.\nExperience supporting global or cross-border transactions.\nFamiliarity with employment law considerations across multiple jurisdictions.\nHR certification (SHRM-SCP, SPHR, or equivalent).\nPrevious experience in a matrixed, multinational organization.\nKey Competencies\nStrong execution capability\nInfluencing and stakeholder management\nAnalytical and financial acumen related to people costs\nClear, concise communication at all organizational levels\nAbility to thrive amid ambiguity and tight 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