Job Title: Payroll, Benefits & HR Associate (Part-Time or Full-Time, Hybrid)
Location: Hybrid – Greater Boston area preferred (South of Boston) (2 days/week in-office)
About the Company
With over 30 years of success, our firm is a recognized leader in delivering practical, science-based engineering and environmental solutions across the Northeast. We’ve completed 15,000+ projects for residential, commercial, industrial, and municipal clients—built on a foundation of technical excellence, cost-effective problem solving, and mission-driven collaboration.
We are also scaling our back-office infrastructure to support continued growth, and are seeking an experienced and proactive professional to lead payroll and benefits administration while serving as a trusted resource for HR operations.
About the Role
We’re hiring a Payroll, Benefits & HR Associate to manage day-to-day payroll, benefits administration, and provide foundational HR support. This role offers flexibility for candidates seeking either a part-time or full-time schedule, with hybrid in-office expectations in the Boston area. It’s an ideal fit for someone who enjoys taking full ownership of payroll and benefits processes while also supporting a people-first culture.
You’ll collaborate closely with our finance and leadership teams, oversee compliance and operational accuracy, and help implement scalable systems as we continue to grow.
Key Responsibilities
* Manage end-to-end, bi-weekly multi-state payroll processing (via ADP)
* Administer employee benefits, including ACA-compliant health plans and 401(k) (via outsourced partner and ADP)
* Serve as the go-to resource for employee questions related to payroll, benefits, and HR policies
* Oversee onboarding and offboarding logistics with a payroll/benefits lens
* Maintain accurate employee records; support selection and implementation of an HRIS (e.g., GoCo)
* Ensure compliance with employment laws and payroll tax regulations across states
* Collaborate with the CFO, senior accountant, and broader back-office team (tools: ADP, Deltek)
* Support light HR reporting and internal audits as needed
* Contribute to hiring and developing efficient HR/payroll processes for future scalability
Qualifications
* 5+ years of experience in payroll, benefits administration, or generalist HR roles (multi-state experience strongly preferred)
* Deep knowledge of ADP payroll systems and 401(k)/benefits management
* Understanding of payroll tax laws and regulatory compliance
* Experience supporting a blend of full-time, part-time, and remote employees
* Approachable, discreet, and comfortable serving as a trusted internal resource
* Self-starter with strong attention to detail and ability to work independently
* Familiarity with ACA-compliant benefits platforms and small company HR environments a plus
* Comfort with a flexible, hybrid schedule (Boston-area presence required 2x/week)
What We Offer
* Flexible part-time or full-time schedule, ideal for working parents or professionals seeking work-life balance
* Opportunity to lead a critical function while shaping scalable systems and practices
* Collaborative, mission-driven team culture
* Pro-rated benefits package for part-time; full benefits for full-time employees (health, dental, vision, 401(k))
To Apply:
If you're a proactive payroll and benefits professional looking for a meaningful, flexible role, we’d love to hear from you.
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