OneStream Specialist

Main Street Capital Corporation•Houston, TX

7d•Onsite

About The Position

Main Street Capital Corporation is seeking a hands-on OneStream Administrator to support their FP&A and finance teams in managing and enhancing their 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. The ideal candidate will be a self-starter with a positive attitude who will focus on getting the job done in an efficient and effective manner in a deadline sensitive environment.

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

OneStream Administration & FP&A Support: 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.
System Maintenance & Enhancements: 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.
Entity Structures & Consolidation Support: 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.
Ownership & Implementation: 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 support 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.