Senior Manager, Accounting, Financial Systems

Brex•San Francisco, CA

5d•Hybrid

About The Position

Brex is seeking a Senior Manager, Financial Systems to lead the strategy, governance, and continuous improvement of its core Finance and Accounting systems. This role is crucial for owning the business roadmap for the FinSys environment, ensuring systems, configurations, workflows, and data structures support scalable, accurate, and well-controlled financial operations. The position involves partnering across the business to design and implement durable solutions that improve the close process, enhance reporting, strengthen controls, and reduce manual work as Brex grows. The ideal candidate will work cross-functionally in a detail-oriented environment, demonstrating creative problem-solving skills and the ability to manage multiple priorities concurrently without compromising quality, accuracy, or completeness.

Requirements

8+ years of experience across Finance Systems, Accounting, Business Systems, or related functions in a public company, high-growth private company, or consulting environment.
Strong knowledge of accounting and finance processes, including month-end close, financial reporting, procure-to-pay, and internal controls.
Demonstrated experience owning or leading implementations and enhancements for ERP and related Finance systems.
Ability to translate accounting and operational requirements into scalable system solutions, process improvements, and control frameworks.
Strong project management skills with the ability to drive cross-functional initiatives across multiple stakeholders and workstreams.
Comfortable navigating the gray and being resourceful.
Strong interpersonal and communication skills — you are organized and great at ensuring everyone’s on the same page.
Strong personal accountability for high quality work and a continuous improvement mindset.
Have the initiative and desire for ongoing learning, innovation, and developing skills/functional expertise in new areas.

Nice To Haves

Experience with NetSuite, Coupa, Workday, Numeric, Zip, Looker, Hex and Pigment.
Experience designing and operating system-enabled controls in support of audits, SOX readiness, or regulatory reporting.
Experience supporting Accounting and Controllership organizations in a FinTech, payments, financial services, or SaaS environment.
Experience using AI tools such as ChatGPT, Claude and/or Google Gemini.

Responsibilities

Own the systems roadmap for Accounting and Finance, prioritizing enhancements that improve scalability, accuracy, control, and user experience.
Serve as the primary business owner for core FinSys tools, including ERP and adjacent platforms supporting close, procurement, reconciliations, reporting, and accounting operations.
Lead end-to-end system enhancements across tools such as NetSuite, Coupa, Pigment, Zip, and Workday from requirements gathering through design, testing, deployment, and post-launch stabilization.
Translate business requirements into system designs, configurations, mapping logic, and operational workflows that are sustainable and well controlled.
Establish and maintain governance over master data, system configurations, role design, approval flows, and change management processes impacting financial reporting and operations.
Drive automation and process improvement initiatives that reduce manual journal entries, reconciliations, handoffs, and spreadsheet dependencies across the close and reporting cycle.
Ensure that Finance Systems architecture appropriately supports key accounting processes, including close, reporting, procure-to-pay, intercompany, and other high-impact workflows.
Develop scalable documentation, SOPs, process maps, and testing protocols to support repeatable execution and durable institutional knowledge.
Support high-impact business initiatives such as new product launches, post-merger integration work, entity expansion, and policy or process changes by ensuring Finance Systems readiness.
Mentor team members and cross-functional partners on best practices in systems thinking, process design, and Finance Systems operations.
Keep up to date with the latest knowledge, capabilities, and trends within our HRIS platforms.