HR Manager, Manufacturing Site Launch

Castelion Corporation; Rio Rancho (NM); Hybrid; USD 90,000 - 120,000; Full time

Job summary

Castelion is seeking a Human Resources Manager to launch and support people operations at a rapidly growing manufacturing facility in Rio Rancho, NM. You will partner with leadership to build a high-performing workforce, ensure strong employee culture, and execute day-to-day HR operations with precision.

You'll lead employee relations, compliance, and HR programs across payroll, benefits, and talent acquisition, while guiding managers through investigations, performance management, and workforce

Qualifications

• Bachelor's degree required or equivalent experience.
• 6+ years of progressive Human Resources experience.
• 3+ years supporting manufacturing/operational environments with non-exempt populations.
• Strong experience coaching managers through ER, investigations, corrective actions, and performance management.
• Deep understanding of wage and hour laws affecting hourly employees.
• Experience partnering with Operations leaders in fast-paced environments.
• Ability to manage multiple priorities with minimal direction.
• Excellent communication and relationship-building skills.

Responsibilities

• Partner with leadership to execute workforce strategies that support production goals, organizational growth, and operational excellence.
• Coach and develop leaders to improve manager effectiveness, accountability, employee performance, and engagement.
• Provide data-driven HR guidance by identifying workforce trends, risks, and opportunities that improve business outcomes.
• Lead complex employee relations matters and performance management activities, ensuring timely, consistent, and legally compliant resolutions.
• Strengthen manager capability through coaching on investigations, corrective actions, conflict resolution, and employee development.
• Foster a high-performance culture by driving accountability, policy consistency, and proactive resolution of workplace issues.
• Serve as the HR expert for a large non-exempt manufacturing workforce, ensuring wage/hour compliance, attendance, scheduling, and timekeeping.
• Analyze workforce metrics, including turnover, attendance, overtime, and engagement, to identify trends and implement operational improvements.
• Partner with leaders to proactively resolve workforce challenges that could impact productivity, staffing or retention.
• Support rapid site expansion by assisting with hiring, onboarding, and workforce readiness.
• Coordinate HR programs across Payroll, Benefits and Talent Acquisition for operational efficiency.
• Use HR metrics to inform business decisions.
• Ensure compliance with federal, NM, and company employment requirements; lead audits and investigations.
• Collaborate with EH&S to address workplace risks and maintain a compliant, safe environment.

Skills

Coaching managers

Communication

Relationship-building

Data analysis

Regulatory compliance

Employee relations

HR experience

Education

Bachelor's degree in Human Resources, Business, or related field

PHR/SHRM certification

Tools

Rippling

Workday

UKG

Job description

Castelion is seeking a Human Resources Manager to launch and support people operations at a rapidly growing manufacturing facility in Rio Rancho, NM. You will partner with leadership to build a high-performing workforce, ensure strong employee culture, and execute day-to-day HR operations with precision.

You'll lead employee relations, compliance, and HR programs across payroll, benefits, and talent acquisition, while guiding managers through investigations, performance management, and workforce