Justworks

Justworks provides a comprehensive HR, payroll, benefits, and compliance platform designed to simplify the operational burden of running a small or mid-sized business, handling everything from payroll processing to health insurance administration. The company's engineering challenges involve building payroll systems that must be accurate to the penny across all 50 states with varying tax regulations, integrating with dozens of insurance carriers and benefits providers, and maintaining compliance with constantly evolving employment laws. Engineers at Justworks work on financial transaction systems where correctness is critical, build self-service tools that make complex HR workflows intuitive for non-technical business owners, and develop the infrastructure that processes billions of dollars in annual payroll. The company hires engineers who want to build reliable, human-centered products in a regulated domain where software quality directly impacts people's paychecks and benefits.