Senior Manager, Corporate Accounting

About Justworks

At Justworks, you’ll enjoy a welcoming and casual environment, great benefits, wellness program offerings, company retreats, and the ability to interact with and learn from leaders in the startup community. We work hard and care about our most prized asset - our people.

We’re helping businesses get off the ground by enabling them to focus on running their business. We solve HR issues. We’re data‑driven and never stop iterating. If you’d like to work in a supportive, entrepreneurial environment, are interested in building something meaningful and having fun while doing it, we’d love to hear from you.

We're united by shared goals and shared motivations se are best summed up in our company values, which are reflected in our product and in our team.

Our values include camaraderie, openness, grit, integrity, and simplicity.

Finance

We’re seeking a Senior Manager, Corporate Accounting to lead U.S. accounting execution for Justworks across our PEO and ASO business. This is a critical leadership role responsible for overseeing high‑volume operational accounting areas — including AP, T&E, payroll, benefits, revenue, and cash — and for delivering a month‑end close process that is timely, auditable, and continuously improving.

You will play a hands‑on leadership role focused on elevating the precision, discipline, and automation of our accounting operations. This includes driving close excellence, upgrading reconciliation processes, and ensuring readiness for an SEC‑compliant control environment. You bring a track record of scaling accounting operations with the help of technology, and you know what “great” looks like when it comes to documentation, controls, and sustainable close timelines.

This role is ideal for someone who has managed month‑end close in a high‑growth or regulated company and is ready to build structure, eliminate inefficiencies, and raise the bar across people, process, and systems.

• Lead the U.S. month‑end close process across AP, payroll, benefits, revenue, and cash — ensuring deadlines are met and outputs are accurate, complete, and audit‑ready.
• Upgrade reconciliation standards to “best‑in‑class” — ensuring account ownership, documentation, and validation processes meet SEC readiness expectations and can scale with complexity.
• Implement a tiered risk‑based approach to reconciliations — identifying material accounts, timing risks, and appropriate levels of review.
• Partner with the Global Controller to define and measure close metrics (e.g., D+ timeline goals, recon aging, manual JE ratio) and ensure continuous improvement against them.

• Identify opportunities to streamline recurring close activities using close management tools, workflow automation, and AI/ML‑based reconciliation tools (e.g., Flo Qast Auto Rec, Net Suite ARM).
• Collaborate with Engineering, Product, and Operations to improve upstream data capture and ensure automation readiness in source systems (e.g., payroll data feeds, billing).
• Working closely with the Financial Systems team, reduce manual entries and reconciliation bottlenecks through scripting, validation logic, and systems‑integrated workflows.

• Own the accurate accounting of recurring, high‑volume transactions — including payroll, fringe benefits, customer billing, pass‑through costs, and employee reimbursements.
• Document transaction‑level accounting treatments and build operational guidance for consistent application across teams.
• Work with Internal Audit and Finance leadership to maintain internal control hygiene (e.g., segregation of duties, review steps, audit trails), and help prepare for eventual SOX compliance.

• Oversee the execution of AP, T&E, and cash‑related processes, ensuring completeness, timely payment processing, and alignment with monthly cutoffs.
• Review and improve accounting handoffs from Billing and Risk & Insurance teams — including revenue JE accuracy, benefits accruals, and carrier payables.
• Maintain alignment between revenue and cost…