HR Operations Specialist

Every cancer patient deserves access to treatment options. Massive Bio is an AI-powered precision medicine platform transforming how cancer patients discover and access clinical trials by eliminating the barriers of geography, financial constraints, and information asymmetry that have historically limited enrollment.

Founded in 2015 and headquartered in US, Massive Bio is scaling its impact globally by powering operations across multiple countries and bringing innovative cancer treatment options to a rapidly growing and diverse population of patients. Through our proprietary AI platform, we connect individuals to clinical trials worldwide and partner with leading pharmaceutical companies, contract research organizations (CROs), and healthcare systems to accelerate drug development and expand equitable access to cutting-edge therapies.

Role Overview

We're looking for an HR Operations Specialist to join our HR & Talent team and run people operations across our global workforce. This role handles the day-to-day mechanics of HR; onboarding, records, payroll coordination, benefits, compliance, and offboarding across multiple countries and time zones, while also supporting recruitment and contributing to HR initiatives across the broader organization.

This is a hands-on operations role with a recruiting component. You'll operate with a high degree of autonomy and serve as a primary point of contact for HR matters across the company.

Key Responsibilities

HR Operations & Administration

• Manage onboarding workflows for new hires and contractors end to end: documentation, system access, orientation scheduling, and first-weeks experience

• Maintain accurate employee and contractor records across HR systems

• Coordinate payroll inputs and track contractor payments across multiple jurisdictions

• Administer benefits and handle compliance-related tasks and documentation

• Track PTO and run offboarding processes

• Serve as the first point of contact for employee and contractor HR inquiries across the organization

People & Culture Initiatives

• Support workforce analytics, reporting, and ad-hoc HR projects

• Help roll out HR policies and processes, and keep documentation current

• Contribute to employee engagement initiatives and internal communications

Recruitment

• Support full-cycle recruiting: sourcing, screening, scheduling, and pipeline management

• Manage job postings, candidate communications, and ATS (Kula) hygiene

• Coordinate interview scheduling and debriefs with hiring managers

Requirements

• 3–5 years in HR Operations, People Operations, or an HR generalist role

• Strong English proficiency, written and spoken - this is a fully English-speaking organization

• Hands-on experience with HR operations fundamentals: onboarding, HR administration, payroll coordination, benefits, and compliance

• Experience working in distributed or remote companies across multiple time zones

• Comfortable with HR tools and platforms (Gusto, Deel, or similar a plus)

• Recruitment operations experience (sourcing, screening, ATS management) a plus

• Self-starter - you'll operate with significant autonomy