Sr. HR Generalist

Founded in 2013, AdAction is a leader in performance-based mobile app marketing, helping the world’s top brands acquire premium users at scale. We partner globally to deliver strategic, data-driven solutions that drive measurable growth.

Our team thrives in a fast-paced, collaborative environment built on autonomy, accountability, and innovation. We value people who take initiative, think strategically, and want to make a meaningful impact—not just within their role, but across the business.

As a remote-first company with talent hubs in Denver, Austin, and Chicago, we prioritize flexibility while creating intentional opportunities for connection through regular in-person events, team gatherings, and company retreats.

AdAction is looking for an Sr. HR Generalist to run our People function across a growing, distributed team. You’ll partner with leadership on people initiatives while owning the day-to-day execution that keeps HR running smoothly, from onboarding and employee experience to performance reviews, compliance, and offboarding.

This role suits someone who is organized, people-first, and comfortable working independently in a fast-paced, remote-first environment.

• Own and manage the full employee lifecycle, including onboarding, compensation updates, promotions, and offboarding

• Run onboarding and offboarding for all new hires and departures, and keep improving the process

• Administer day-to-day HR operations across systems including ADP, GSuite, Slack, and related tools

• Maintain employee records, HR systems, and organizational reporting with accuracy and confidentiality

• Coordinate the annual performance review cycle and support managers through the process

• Conduct exit interviews and share trends and opportunities for improvement with leadership

• Partner with leadership on people initiatives, team needs, and employee engagement

• Serve as a first point of contact for employee questions and concerns, and escalate sensitive issues to leadership

• Support managers with performance conversations, documentation, and team development

• Partner with Recruiting on hiring process and new-hire experience

• Ensure the company follows compliance requirements, including required trainings, postings, policy acknowledgments, and documentation

• Keep the employee handbook and HR policies up to date, working with leadership and outside advisors as needed

• Coordinate with our EOR partner on onboarding and day-to-day needs for international employees

• Support benefits administration and open enrollment, and answer employee benefits questions

• Lead employee engagement initiatives, surveys, and recognition programs

• Plan and execute company events, retreats, and in-person gatherings across all locations

• Help foster and strengthen AdAction’s culture across a remote-first environment

• 4-6 years of experience in HR or People Operations

• Strong understanding of employee lifecycle management and HR best practices

• Experience supporting a remote or distributed workforce

• Working knowledge of US employment compliance requirements; experience with international employees or an EOR is a plus

• Exceptional organization and project management skills with strong attention to detail

• Excellent communication skills and strong emotional intelligence

• High level of discretion and professionalism when handling confidential information

• Experience with HRIS platforms such as ADP or similar systems

• Experience with GSuite, Slack, and other admin and operational tools

• PHR or SHRM-CP certification is a plus

• Health, dental, and vision insurance

• Up to 6% 401(k) match

• Generous PTO + company holidays

• Paid parental leave

• Flexible remote-first work environment

• Team outings, happy hours, and in-person events

• Weekly UberEats credit

• Home office stipend

• Learning & development stipend

• Wellness stipend