HR Generalist

About SewerAI Corporation SewerAI is transforming underground infrastructure management through AI-powered inspection and risk analysis. Our platform helps contractors, engineering firms, and utilities unlock valuable insights from sewer inspection data—turning hours of manual video review into actionable intelligence in minutes. After doubling our customer base over the past year, we’re now entering an exciting phase of accelerated growth. About the Role SewerAI is hiring an HR Generalist to help scale our People function and support an exceptional employee experience as the company continues to grow past 100 employees. This role adds dedicated, experienced capacity across People Operations, HR administration, the employee lifecycle, and HR compliance. You bring 4+ years of hands-on HR experience, whether as a generalist or in a specialty area, and you thrive in a fast-paced startup environment where priorities move quickly and every team member plays a meaningful role. You will work closely with the Head of People and partner with the Recruiting team to keep People processes, employee support, and HR operations running smoothly as the organization scales. At SewerAI we Demand Greatness — holding ourselves and each other to a high standard while supporting one another in doing meaningful work that impacts the communities and infrastructure we serve. This position is designed with a clear path into a more senior HR role over time. What You'll Do Core HR & People Operations - Support day-to-day HR activities across the full employee lifecycle. - Administer benefits, 401(k), and leave programs — processing, changes, and audits — and serve as a first point of contact for employee questions. - Partner with the Head of People on benefits renewals and Open Enrollment, including employee communications, coordination, and enrollment support. - Coordinate payroll inputs and changes in partnership with Finance, ensuring accuracy and timeliness. - Own HRIS data integrity — records, reporting, and system hygiene — and generate People reports and dashboards for leadership. - Build and maintain accurate headcount data in Rippling, keeping records current and reporting-ready, and ensure employee data accuracy across People systems such as Rippling and Carta. - Coordinate offboarding logistics and equipment returns. - Support HR compliance initiatives, audits, and documentation across applicable federal and California requirements. - Maintain People policies, documentation, and internal People resources, and support and maintain the People intranet workspace in Notion. People Programs & Employee Experience - Administer engagement and pulse surveys and prepare clear reporting on the results. - Support the company's 360 performance review program, including coordination, communications, tracking participation, and supporting leaders through the review cycle. - Assist in training managers on HR procedures, policies, and People processes to ensure consistent and compliant practices across the organization. - Create and distribute a monthly internal employee newsletter and support company-wide communications related to People programs and initiatives. - Provide day-to-day employee relations support and escalate sensitive matters to the Head of People with sound judgment. - Support employee engagement activities, internal People programs, onsites, offsites, and company travel logistics. - Partner with Recruiting on joint initiatives such as employer branding, candidate experience, and hiring events. Office & Systems Support - Handle office duties including mailings, shipments, and company swag — including new-hire welcome materials — ordering, packaging, and distribution. - Manage equipment ordering and coordinate with IT to support employees across the company. What Success Looks Like - Core HR operations — benefits, payroll, 401(k), leave, and HRIS — run accurately and on time without leadership intervention. - Compliance and documentation are c…