HR Generalist

AdCellerant•Denver, CO

7d•Hybrid

About The Position

AdCellerant is seeking an HR Generalist to join their People Operations team. This role will provide broad People Operations support across core functional areas, including employee relations, payroll and benefits administration, hiring, and new employee onboarding. The position also involves administrative support for the finance team. The role requires a regular in-office presence at the Denver headquarters, with a hybrid work arrangement (approximately 2 days per week in the office). The ideal candidate is detail-oriented, dependable, passionate about the employee experience, thrives in a fast-moving environment, takes ownership, and has a collaborative spirit.

Requirements

2–4 years of experience in an HR or People Operations role preferred
1+ years experience managing employee relations
Familiarity with HRIS platforms and ability to quickly master new systems
Ability to support payroll processes or benefits administration; hands-on experience with payroll systems strongly preferred
Working knowledge of HR compliance fundamentals, including multi-state employment considerations
Strong attention to detail and high level of accuracy — especially in payroll-related tasks
Proficient with Google Suite; comfortable with Excel functions and data reconciliation
Excellent written and verbal communication skills with a professional, approachable style
Ability to handle sensitive and confidential information with discretion and sound judgment
Self-directed and organized, with the ability to manage multiple priorities in a fast-paced environment
Must be able to report to the Denver office regularly to support on-site operations
Currently legally authorized to work in the United States on a full-time basis.

Nice To Haves

Hands-on experience with payroll systems strongly preferred

Responsibilities

Act as a first point of contact for general employee HR questions, directing team members to appropriate resources and escalating issues appropriately.
Assist with employee relations matters, documentation, and follow-up.
Contribute to People Ops projects and initiatives including engagement programs, learning and development initiatives, policy rollouts, and training coordination.
Process employee changes (promotions, transfers, manager updates) accurately and in a timely manner across HRIS platforms.
Support HRIS data integrity through routine audits of employee records.
Contribute to the maintenance and updating of HR SOPs, internal wikis, and policy documentation.
Assist with offboarding workflows, ensuring timely system updates, access removal, and documentation completion.
Maintain compliance documentation including I-9s, eVerify, and relevant payroll/benefits records.
Assist with multi-state compliance tasks including labor law poster updates.
Provide regular administrative support to the broader finance team, including basic invoice entry and reviews.
Assist with semi-monthly U.S. payroll processing, including data entry, pre-processing audits, and deduction verification.
Provide back up and coverage for payroll processing as needed.
Support the leave of absence administration process, including tracking leave timelines, coordinating documentation, and communicating with employees.
Reconcile payroll reports, flag discrepancies, and maintain accurate documentation across employee records.
Assist with new hire benefits enrollments, qualifying life event (QLE) processing, and termination-related benefits coordination.
Support benefits billing reconciliation, audit preparation, and open enrollment logistics.
Lead hiring coordination, facilitating post-selection handoff from the recruiting team, preparing offer packets, and completing new hire paperwork.
Manage the onboarding experience for new hires, including system setup and orientation coordination.
Support recruiting efforts as needed, including sourcing, scheduling with candidates, and conducting first round interviews.
Provide meaningful backup for the recruiting function during strategic seasons.