OneStream Specialist

Main Street Capital Corporation•Houston, TX

6h•Onsite

About The Position

We are seeking a hands-on OneStream Administrator to support our FP&A and finance teams in managing and enhancing our financial system’s environment. This role will play a key part in onboarding new portfolio companies, maintaining financial structures, and ensuring accurate, scalable reporting across a complex investment platform.

Requirements

Bachelor’s degree in MIS, Information Systems, or a related field
Strong systems aptitude with hands-on experience in financial systems or EPM platforms
Experience supporting FP&A or finance teams in a systems capacity
Working knowledge of: Financial reporting, General ledger structures, Data mapping and transformations
Ability to manage multiple priorities in a dynamic, fast-paced environment
Strong problem-solving skills and attention to detail

Nice To Haves

Direct experience with OneStream
Experience with financial consolidations and reporting tools (e.g., Hyperion, Oracle, or similar)
Background in investment management, private equity, or financial services
Experience supporting complex entity structures and multi-entity environments
Familiarity with Cube Views, business rules, and data integrations

Responsibilities

Partner closely with FP&A to support day-to-day OneStream activities
Build and onboard new portfolio companies into OneStream, including: Entity setup, Financial package development, Metadata and dimensional configuration
Maintain and enhance the platform, including: Adding and mapping new GL accounts, Updating hierarchies and metadata, Creating and maintaining Cube Views and dashboards
Support ongoing reporting needs, including recurring and ad hoc financial packages
Own updates to mappings, transformations, and data integration processes
Troubleshoot data issues and ensure integrity across the system
Rebuild or reconfigure models as portfolio companies transition between ERP systems
Continuously improving system performance, usability, and scalability
Support complex legal and management entity structures, including pro forma entities
Assist with consolidation processes and reporting accuracy
Partner with finance to ensure proper treatment of intercompany and ownership structures
Take ownership of OneStream-related initiatives and enhancements
Act as a key contributor in system implementations, upgrades, and process improvements
Collaborate cross-functionally with FP&A, accounting, and IT

Benefits

Comprehensive medical, dental, and vision coverage effective on your first day
Competitive compensation package includes bonus opportunities and restricted stock awards
Fully employer‑paid life insurance, short‑term disability, and long‑term disability coverage
15 days of paid time off
12 company holidays
Immediate 401(k) employer match beginning the first of the month following their hire date—without any vesting schedule
Professional development by covering licensing and continuing education costs
100% company‑paid parking
Access to an on‑site gym
Scholarship Program for dependents
Volunteer time off to participate in charitable and volunteer activities
Paid parental leave
Access to back-up caregiving services