Finance Systems Admin (Treasury & Tax)

Oscar Health•New York, NY

2d•Hybrid

About The Position

We are seeking an experienced Financial Systems Administrator to support the implementation, administration, and ongoing management of enterprise Treasury and Tax technology platforms. This individual will play a key role in implementing a new Treasury Management System (GTreasury) and will take full ownership of the platform following deployment. The ideal candidate combines strong technical systems administration experience with an understanding of Treasury operations. This is a hands-on, individual contributor role requiring approximately 60% technical and 40% functional expertise.

Requirements

7+ years of relevant Financial Systems Administration experience, preferably supporting Treasury technology.
Hands-on experience administering Treasury Management Systems (TMS), ideally GTreasury, Kyriba, FIS Quantum, or comparable platforms.
Proven experience implementing enterprise financial systems from initial configuration through deployment and ongoing administration.
Strong understanding of Treasury operations, including cash positioning, forecasting, liquidity management, investments, and net interest income.
Knowledge of system integrations, data flows, APIs, SFTP, security, and financial controls.
Experience independently managing financial applications, troubleshooting issues, and coordinating with technical teams and vendors.
Strong communication, problem-solving, and stakeholder management skills.
Bachelor's degree in Finance, Accounting, Information Systems, Business, or a related field.
Must be authorized to work in the U.S.
This position is not eligible for sponsorship.

Nice To Haves

Direct GTreasury implementation and administration experience.
Experience with Tax technology platforms such as ONESOURCE, Corptax, or similar applications.
Familiarity with Workday, SAP, Oracle, or other ERP systems.
Experience supporting financial transformation initiatives.
Background in financial services, banking, insurance, healthcare, or enterprise environments.

Responsibilities

Support end-to-end implementation of GTreasury, including requirements gathering, configuration, testing, deployment, and post-launch support.
Serve as the primary administrator for Treasury Management Systems, managing maintenance, troubleshooting, enhancements, and user support.
Partner with Treasury, Tax, Finance, IT, Engineering, and external vendors to ensure successful system operations.
Oversee integrations and data flows between Treasury platforms, ERP systems, banking applications, and investment management systems.
Manage system security, user access, financial controls, reconciliations, and data accuracy.
Identify opportunities to improve automation, reporting, workflows, and overall system efficiency.
Support future implementation and administration of corporate Tax technology platforms.