Senior Human Resources Generalist

Advisor360•Needham, MA

3d•$125,000 - $145,000•Remote

About The Position

This role serves as a true generalist across the employee lifecycle, handling HR operations, onboarding, and business partnership. The Senior Human Resources Generalist will own end-to-end new hire onboarding, from offer to first 90 days, and act as a resource for employees and managers on HR-related matters. A key responsibility includes maintaining HRIS data integrity, managing immigration case documentation, and supporting core compliance work. The position also involves acting as an HRBP for a subset of teams, planning engagement initiatives, and refining HR processes. Collaboration with Talent Acquisition, Total Rewards, and HRBP teams is essential to ensure a seamless employee experience. This role is ideal for someone who enjoys variety and is comfortable figuring things out.

Requirements

4–7+ years of progressive HR generalist experience spanning HR operations, onboarding, and HR business partnership.
A scrappy, roll-up-your-sleeves mindset — comfortable operating without a large team or fully built-out infrastructure.
Hands-on HRIS and Rippling experience required.
Sound judgment and discretion when handling confidential or sensitive employee matters.
Strong process orientation — able to bring structure and consistency to ambiguous or undefined situations.
Working knowledge of employment law fundamentals (leave administration, I-9 compliance, multi-state employment).
Excellent interpersonal and communication skills, with the ability to build trust quickly across all levels of the organization.
A genuine enjoyment of variety — equally comfortable auditing HRIS data one hour and coaching a manager through a tough conversation the next.
Fluent with AI tools and comfortable using them to move faster on the administrative side of HR — with the judgment to know what still needs a human.
Bachelor’s degree or equivalent practical experience.

Responsibilities

Serve as a true generalist across the employee lifecycle — rolling up your sleeves on HR operations, onboarding, and business partnership, often all in the same day.
Own end-to-end new hire onboarding: offer-to-start logistics, paperwork and compliance, first-day experience, and check-ins through the first 90 days.
Be a go-to resource for employees and managers on policies, benefits, payroll questions, and general HR support — with the judgment to know when to escalate.
Maintain HRIS (Rippling) data integrity, including employee changes, terminations, org updates, and compliance-related recordkeeping.
Own immigration case management and documentation — coordinate visa sponsorship, extensions, and status changes with outside counsel, track key filing deadlines and compliance dates, and maintain accurate records across the employee's immigration lifecycle.
Act as an HRBP for a subset of teams — supporting managers with lighter-touch coaching, performance conversations, and employee relations issues.
Support core compliance work, including I-9s, leave administration, and state-specific filings across our multi-state workforce.
Help plan and execute engagement, culture, and internal communications initiatives that keep people connected as we grow.
Build and refine repeatable HR processes and playbooks — turning ad hoc practices into scalable ones as the company matures.
Partner with Talent Acquisition, Total Rewards, and HRBP to ensure a seamless, consistent employee experience across functions.
Jump into whatever’s needed — this role is built for someone who genuinely enjoys variety and isn’t afraid to figure things out.