We are seeking an experienced HR Business Partner to support a high-growth, fast-paced business with data center operations. This role serves as a trusted advisor to operational and site leaders, balancing hands-on employee relations work with strategic workforce planning as the organization scales. The ideal candidate is comfortable in a dynamic environment where priorities shift quickly, headcount is growing, and sites are ramping up. Data center or mission-critical infrastructure experience is a strong plus.

• Consults with management, providing timely HR guidance in a rapidly scaling environment.
• Manages and resolves complex employee relations issues; conducts prompt, thorough, and objective investigations.
• Partners with the legal department as needed or required.
• Provides day-to-day HR support (e.g., coaching, counseling, career development, disciplinary actions) to leaders and employees across corporate and data center sites.
• Works closely with management and employees to improve working relationships, build morale, and increase productivity and retention, particularly in competitive technical and skilled-trades talent markets.
• Provides HR policy guidance and interpretation, and helps evolve policies and practices as the business grows.
• Supports workforce planning for new site launches, expansions, and ramp-ups, including staffing models, onboarding, and shift-based operations.
• Provides guidance and input on business unit restructurings, organizational design, and succession planning.
• Supports 24/7 mission-critical operations, including shift-based workforce needs, on-call coverage, and related employee relations considerations.
• Partners with Safety, Operations, and Facilities leaders on workplace safety, compliance, and culture in a critical infrastructure environment.
• Assists international employees with expatriate assignments and related HR matters.
• Identifies training needs for business units and individual executive coaching needs.
• Uses HR metrics (e.g., turnover, time-to-fill, grievance trends) to identify issues and recommend solutions.
• Works effectively in a unionized environment, partnering with operational leaders and union representatives and supporting the administration of collective bargaining agreements (CBAs) and grievance processes as needed.
• Performs other related duties as assigned.

Required Skills/Abilities

• Excellent verbal and written communication skills.
• Excellent interpersonal and customer service skills, with the credibility to advise senior operational leaders.
• Excellent organizational skills and attention to detail.
• Ability to thrive in a high-growth, fast-paced environment, managing multiple priorities and adapting to change with minimal structure.
• Excellent time management skills with a proven ability to meet deadlines.
• Strong analytical and problem-solving skills.
• Willingness to travel to data center sites as needed.

Education and Experience

Required

• Minimum of 5 years of Human Resources experience, including at least 3 years resolving complex employee relations issues, ideally as an HR Business Partner.
• Experience supporting a high-growth, fast-paced organization.
• Working knowledge of performance management and federal and state employment laws.

Preferred

• Bachelor's degree in Business Administration, Psychology, or a related field.
• Experience supporting a unionized workforce, including CBA administration and grievance handling.
• Experience supporting data center or mission-critical infrastructure environments. Experience in similar technical operations settings (e.g., critical facilities, construction, utilities, telecom, manufacturing) is also valued.
• SHRM-CP, PHR, or SPHR. Certification

L5 Mission Critical is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy), sexual orientation, gender identity or expression, national origin, age, disability, genetic information, veteran status, or any other characteristic protected by federal, state or local law.