What are the responsibilities and job description for the Senior Human Resources Generalist position at Trillium?
Senior Human Resources Generalist
Position Summary:
Trillium is seeking a dynamic and experienced Senior HR Generalist to support and execute a broad range of human resources programs, initiatives, and strategies that drive employee and organizational performance. Upholding and promoting Trillium’s Core Values is central to this role.
The Senior HR Generalist will serve as a key resource to managers and employees, providing both day-to-day HR support and more advanced guidance on employee relations, talent management, and HR operations. This role requires a proactive, solutions-oriented professional who can operate both tactically and strategically while helping to strengthen and scale HR practices across the organization.
Job Duties & Responsibilities:
HR Leadership & Employee Relations
- Serve as a trusted advisor to managers, providing guidance on employee relations, performance management, and team effectiveness
- Lead HR team members, helping prioritize workloads, foster collaboration, and maintain a cohesive team environment to ensure consistent and efficient delivery of HR services.
- Lead employee relations matters, including investigations, conflict resolution, and coaching, ensuring fair, consistent, and legally compliant outcomes
- Identify trends and recommend proactive solutions to improve employee engagement, retention, and workplace culture
- Support and influence managers in aligning team practices with Trillium’s core values
- Partner with leadership to mitigate risk and address complex HR issues
HR Operations & Process Improvement
- Oversee and maintain PEO systems and employee records, ensuring data integrity and compliance
- Evaluate and enhance HR processes, policies, and SOPs to improve efficiency and consistency across locations
- Managed and oversee Leave of Absence (LOA) programs and Workers’ Compensation (WC) claims, ensuring full compliance with federal and state regulations while coordinating closely with third-party administrators
- Partner with leadership to implement new programs and initiatives that support organizational growth
- Analyze exit interview data and other HR metrics to provide actionable insights
- Ensure compliance with all federal, state, and local employment laws and regulations
- Lead or support internal audits with PEO and ensure HR practices align with legal and organizational standards
Culture & Engagement
- Champion Trillium’s culture by driving initiatives that enhance employee engagement and promote a positive, inclusive workplace
- Collaborate cross-functionally to support organizational goals and continuous improvement efforts
- Act as a role model for a high-performance, values-driven culture
- Partner with hiring managers to support full-cycle recruiting efforts, including workforce planning, candidate selection, and hiring decisions
- Provide guidance on job design, compensation alignment, and market competitiveness
- Support and continuously improve onboarding programs to drive strong new hire integration and retention
- Coach managers on effective interviewing and hiring practices
Desired Qualifications & Abilities
Qualifications & Experience
- Minimum of 3–5 years of progressive HR experience, including strong Generalist experience
- Experience handling complex employee relations issues independently
- Experience supporting multiple locations and/or departments strongly preferred
Knowledge, Skills, and Abilities
- Ability to travel to multiple Trillium locations when needed
- Strong business acumen and ability to balance employee advocacy with organizational needs
- Excellent communication, coaching, and influencing skills
- Proven ability to manage sensitive and confidential matters with discretion
- Highly organized with strong attention to detail and follow-through
- Ability to work independently and take ownership of key HR functions
- Comfortable operating in a fast-paced, high-growth environment
- Analytical mindset with the ability to use data to inform decisions
- Proactive, adaptable, and solutions-driven approach
Benefits
- Medical, dental and vision benefits with no wait period
- Short term disability and life insurance
- 401k plan with generous match and no wait period
- Performance Incentive Bonus
- Responsible time off
- Trillium Comp Card
- Trillium discounts
- Philanthropy program
- Employee gym
- Educational Reimbursement Program
- MBTA Pass discount
- PPE Reimbursement