MANTECH seeks a motivated, career and customer-oriented Journeyman OneStream Consultant to join our team. This is a REMOTE position.
At MANTECH we are re-engineering the financial backbone of the U.S. Government. We provide highly configured, mission-critical Planning, Programming, Budgeting, and Execution and Financial Close and Reporting solutions leveraging the OneStream platform.
As an OneStream Consultant, you will serve as a technical lead and subject matter expert for our most complex implementations. You will transition from pure building to architecting—designing entire application modules, translating functional requirements into technical blueprints, and guiding a team of associates to deliver high-performance solutions. You will own the technical quality of the application, ensuring performant business rules, streamlined security, and scalable data models.
Responsibilities include but are not limited to:
Lead the design of application modules (e.g., PPBE, Workforce, Capital, Capex), creating technical specifications that translate functional requirements into scalable OneStream architecture.
Advanced Development: Write and optimize complex Business Rules of all types (Finance, Parser, Connector, Extender) and design sophisticated Workflow strategies to solve unique client challenges.
Data Strategy & Integration: Design dynamic data load processes and Custom Tables for complex datasets; create Variance Analyses to validate data integrity between source systems and OneStream.
Technical Leadership & Mentorship: Parse complex requirements into development tasks for Associate Consultants; conduct code reviews, teach troubleshooting techniques, and support junior staff in resolving helpdesk tickets.
MarketPlace & Solutions: Configure and modify MarketPlace Solutions (e.g., Line Item Modeling, Task Manager, etc.) and integrate them into the core application.
Reporting Strategy: Design and implement comprehensive reporting strategies using BI Viewer, Extensible Documents, and Cube Views, ensuring optimal performance and usability.
Consulting Mindset: Listen carefully to what others need (client and team members) and be willing and ready to respond to those needs to the best of your ability; look beyond the “easy” answer working collaboratively to bring the best Mantech has to offer to exceed others’ expectations.
Minimum Qualifications:
Bachelor’s degree in Computer Science, Systems Engineering, Information Systems, or related field.
5+ years of experience in software development or financial systems implementation.
3+ years of dedicated OneStream implementation experience.
1+ years of OneStream XF implementation, configuration, and optimization experience
Advanced proficiency in VB.NET or C# and SQL.
Strong understanding of OneStream architecture, including Data Management, Cube Design, and Security.
Preferred Qualifications:
Experience with the federal Planning, Programming, Budgeting, and Execution (PPBE) process or financial management within the government sector.
Experience assisting with ATOs, Single Sign-On (SSO), or working in a professional services/consulting firm.
OneStream Certified Professional (OCP).
Certified Government Financial Manager (CGFM) or Certified Defense Financial Manager (CDFM).
CompTIA Security+ certification.
Clearance Requirements:
US Citizenship with the ability to obtain a Secret security clearance.
Physical Requirements:
Must be able to remain in a stationary position 50%
Frequently communicates with co-workers, management, and customers, which may involve delivering presentations
Must be able to exchange accurate information in these situations
MANTECH is more than a technology company. We are a company dedicated to service, and we consider our work a part of the public trust. The people of MANTECH are privileged to work for the security of the United States, the welfare of our service members and veterans, the protection of our communities, and the cause of better health care.
We have served the nation for more than 57 years, and in that time we have continually changed and grown to provide the technology that government needs to meet new challenges. We seek people with the same strong ethic of service, creativity, energy, and dedication to serving our country.
We are comprised of more than 9,800 talented employees around the world. Nearly 40% of our employees are veterans. Many others come from the Intelligence Community, Homeland Security and federal civilian agencies. We understand our customers’ challenges because we know their world firsthand.
When Federal managers and military leaders face tough challenges in cyber, data collection & analysis, enterprise IT or systems and software engineering, they turn to MANTECH to get the job done right. These professionals trust MANTECH and stay with us for years because we understand their needs and tackle their most complex challenges head on. They know that reaching their goal is our ultimate objective.
