Senior Human Resources Manager

Sr. Human Resources Manager The Sr. Human Resources Manager is a senior leadership role responsible for overseeing all HR functions at a large, unionized manufacturing facility. This position partners closely with plant leadership to drive employee relations, labor relations, workforce planning, and cultural transformation in a demanding industrial environment. This is a high-impact, standalone HR leadership role requiring a confident, hands-on leader who can influence operations, hold leaders accountable, and drive meaningful change. The role focuses on improving engagement, strengthening performance management, and ensuring compliance while supporting a diverse, hourly workforce. This opportunity is ideal for an experienced HR professional who thrives in fast-paced, complex environments and wants to take full ownership of HR at the site level. What You'll Do Lead all HR functions for the facility, acting as the primary HR leader onsite Drive employee relations and labor relations strategy across a unionized workforce Conduct investigations, manage discipline, and ensure compliance with labor laws and company policies Partner with plant leadership to improve culture, accountability, and performance Coach and advise leaders on talent management, performance management, and employee engagement Monitor key workforce metrics including turnover, absenteeism, and time-to-fill Support workforce planning and staffing for hourly and frontline roles Lead employee engagement initiatives and morale-building programs Manage union interactions and support negotiations as needed Develop, implement, and enforce HR policies and procedures Utilize HRIS systems to track data, generate reports, and inform decision-making Build relationships with internal stakeholders and external community partners What You Bring Bachelor's degree in Human Resources or related field OR 7+ years of relevant HR experience 57+ years of progressive HR experience in manufacturing, industrial, or similar environments Strong employee relations experience, including investigations and performance management Experience working in a unionized environment (highly critical) Solid knowledge of labor laws and HR compliance (FMLA, ADA, FLSA, etc.) Experience supporting frontline supervisors and hourly workforce populations Ability to manage high-volume, day-to-day HR issues with minimal oversight Strong communication skills and ability to handle difficult conversations Experience using HRIS systems for reporting and workforce data analysis Preferred Qualifications Prior experience as an HR Manager or Sr. HR Manager Experience in lean manufacturing or industrial operations PHR, SPHR, or SHRM certification Experience influencing leadership teams and broader business strategy Background in rail, heavy manufacturing, oil & gas, or similar industrial environments What You Get Competitive base salary with strong market positioning Comprehensive benefits package including medical, dental, vision, and 401(k) match High-impact leadership role with full ownership of HR at the site Opportunity to influence culture, leadership behavior, and workforce performance Exposure to complex labor relations and union environment Backing of a large, stable global organization (Marmon Holdings / Berkshire Hathaway) Opportunity to drive meaningful operational and cultural improvements Collaborative environment with direct access to plant and corporate leadership