Senior Human Resources Manager

As a Senior HR Manager within our Not-for-Profit HR Services Team , you’ll play a vital role in supporting clients across a wide range of human resources functions while partnering closely with internal generalists and HR leadership to ensure seamless service delivery. You’ll manage internal workflows, provide hands-on support for client needs, and serve as a trusted HR resource in sectors like education, social services, and other mission-focused environments.

Key Responsibilities Leadership & Management

• Effectively support the management of all HR functions across client accounts
• Mentor and support HR Generalists; provide coaching and feedback
• Provide advanced support to resolve complex or sensitive HR issues
• Collaborate with AVP and HR Directors on recruitment, retention, and succession planning
• Ensure compliance with evolving state, federal, and local employment laws
• Build and maintain strong client relationships through responsive service, proactive communication, and consistent execution.

Client-Facing & Advisory

• Support client onboarding and service management for new and existing accounts
• Develop and manage client communications, including newsletters and HR updates
• Conduct investigations, manage disciplinary processes, and navigate union interactions
• Interpret employment law and CBAs while advising on best practices

HR Expertise

• Demonstrates strong technical HR expertise across employee relations, performance management, compliance, compensation, leave administration, talent acquisition, and organizational development.
• Provides practical, risk-averse recommendations while balancing compliance with business objectives.
• Maintains current knowledge of employment laws, HR trends, and best practices.

Execution & Operational Excellence

• Successfully manages multiple client priorities while consistently meeting deadlines and service expectations.
• Demonstrates exceptional organizational skills, responsiveness, and attention to detail.
• Leads complex HR projects from planning through implementation with measurable results.
• Utilizes data and key performance metrics to improve service delivery and operational effectiveness.
• Manage client email queues and daily administrative workflow for client sites
• Manage client systems and reporting
• Lead proactive internal audit of client files to ensure best practices are being followed
• Demonstrates strong technology aptitude with the ability to quickly learn, leverage, and optimize HR systems, AI-enabled tools, and emerging technologies to enhance operational efficiency, data-driven decision-making, and client service delivery.
• Refine and document SOPs and workflows internal the client services team and clients.

Accountability and Results

• Demonstrates a commitment to lifelong learning and embraces AI-driven tools and innovation.
• Highly responsive, organized, and deadline-driven, with the ability to effectively manage multiple priorities while delivering high-quality work on time and in a fast-paced environment.
• Champions client retention through proactive relationship management, strategic partnership, and consistent delivery of high-quality HR services.

HR Generalist Support (as needed)

• Partner with Talent Acquisition to fill key client roles
• Function as a generalist when business needs require
• Ensure accurate HRIS updates and policy compliance