OneStream Specialist

Main Street Capital Corporation (NYSE:MAIN)

Company Overview

Main Street Capital Corporation (www.mainstcapital.com), or Main Street, is a publicly traded principal investment firm (NYSE: MAIN) with over

$8.5+ billion of capital

undermanagement. Main Street primarily provides customized long-term debt and equity capital solutions to lower middle market companies and debt capital to private companies owned by or in the process of being acquired by a private equity fund. Main Street's portfolio investments are typically made to support management buyouts, recapitalizations, growth financings, refinancings and acquisitions of companies that operate in diverse industry sectors. Main Street seeks to partner with entrepreneurs, business owners and management teams and generally provides "one stop" financing alternatives within its lower middle market investment strategy. Main Street seeks to partner with private equity fund sponsors and primarily invests in secured debt investments in its private loan investment strategy. Main Street's lower middle market companies generally have annual revenues between $10 million and $150 million and Main Street's private loan portfolio companies generally have annual revenues between $25 million and $500 million.

Main Street has consistently been ranked as a Top 100 Place to Work in Houston

(ranked in the total 100 in 2025, 2024, 2023 and 2022 within the small-company ranking category by the Houston Chronicle)Additionally,Main Street was listed on the Houston Chronicle's "CHRON100" top performing Houston-based publicly-traded companies.

Trust, friendliness, conscientiousness, and fun are embedded in Main Street's culture. We sponsor regular activities for our employees, which we believe help create personal friendships, bonds and workplace happiness. We strive to be more than just an office for our employees. We work to create meaningful experiences for our employees where they are allowed to be themselves and connect with their peers. This promotes collaboration and drives individual and firm wide performance. Culture is the secret ingredient to Main Street's 20 years of success as a publicly traded principal investment firm. We are a strong and healthy workplace and believe in consistently rewarding top talent.

We're currently looking for a

OneStream Specialist

that can bring attention to detail, strong work ethics and organizational skills to our team and organization. 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.

Position Summary

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.

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
Skills/ Qualifications

Required:

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
Preferred:

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
Why join Main Street's growing team?

Unique and differentiated lower middle market investment strategy
Supportive and dynamic team-based work environment
Great compensation and benefits

Please visit

to learn more about our company

Company Benefits

At Main Street, we're committed to creating an environment where our employees can thrive both professionally and personally. We offer comprehensive medical, dental, and vision coverage effective on your first day. Our competitive compensation package includes bonus opportunities and restricted stock awards, along with fully employer-paid life insurance, short-term disability, and long-term disability coverage. Employees start with 15 days of paid time off, enjoy 12 company holidays, and receive an immediate 401(k) employer match beginning the first of the month following their hire date-without any vesting schedule.

We proudly support professional development by covering licensing and continuing education costs, and we provide 100% company-paid parking and access to an on-site gym. Additional benefits include a Scholarship Program for dependents, volunteer time off to participate in charitable and volunteer activities, paid parental leave, and access to back-up caregiving services, among many other perks designed to support your well-being and success.

Location

Our Corporate Office is in a premier office building in the Uptown/ Galleria area in Houston, Texas (1300 Post Oak Blvd, 8th Floor, Houston, TX 77056).

Our Commitment

Main Street Capital Corporation is an equal opportunity employer committed to diversity in recruiting, hiring, developing, compensating and promoting applicants and its employees. All employment decisions are made without regard to sex, race, color, religion, national origin or ancestry, citizenship, age, disability, marital or veteran status, sexual orientation, gender identity or expression, or any other legally protected categories.