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Senior Software Engineer, International Payroll

Justworks - New York, NY, United States - In-office - posted 2026-08-17

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Justworks is seeking a Senior Software Engineer to join the Workforce Payments team, which builds the core computation layer powering payroll, money movement, and tax calculation products. This is a mission-critical role operating at the heart of the platform's financial accuracy and compliance. You will independently own large-scoped projects from discovery through launch, with a focus on outcomes and customer impact. Key responsibilities include: • Independently own large-scoped projects from initial discovery through launch with focus on outcomes and customer impact • Collaborate with cross-functional teams to solve customer challenges • Improve performance, reliability, and scalability of existing systems • Promote engineering excellence through technical leadership, knowledge-sharing, and mentorship • Add capabilities to high-volume, fault-tolerant processing infrastructure • Enhance testing, monitoring, and continuous deployment infrastructure • Maintain security and compartmentalization of sensitive financial data You are self-driven, curious, and passionate about solving complex financial problems. You have demonstrated ability to build, deploy, and maintain large-scale applications. You care more about solutions and customer impact than specific tools or frameworks. Success in this role requires good judgment, resourcefulness, strong teamwork and communication skills, and a commitment to the company's core values (Camaraderie, Openness, Growth, Integrity, and Service). You will thrive in a supportive, entrepreneurial environment focused on reliability and precision in financial systems.

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