OneStream Consultant

MANTECHseeks a motivated, career and customer-oriented OneStream Consultant to join our team.

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 (PPBE) and Financial Close and Reporting solutions leveraging the OneStream platform. This is a fully remote opportunity.

As a Mid-Level OneStream Developer, you will build, test, and integrate core platform components and financial logic. Operating between entry-level configuration and senior platform architecture, you will own technical delivery for key modules, write custom business rules, design data integrations, and support compliance and security efforts.

• Design, write, test, and troubleshoot custom OneStream Business Rules (Finance, Parser, Connector, Event Rules, and Member Formulas) using VB.NET or C# to implement complex financial calculations and client business logic.
• Configure and maintain Workflow Profiles, Confirmation Rules, Transformation Rules, and Data Management sequences to support complex financial reporting and budgeting processes (including federal budgeting standards where applicable).
• Build and customize Cube Views, BI Viewer dashboards, Extensible Documents, and custom reports to deliver accurate, actionable financial insights for executive leadership and operational management.
• Design, build, and optimize data conversion and data load artifacts, SQL scripts, database views, and staging tables for smooth data migration, extraction, and validation across all project phases.
• Support platform integrations, security model configuration, Single Sign-On (SSO) setup, and technical documentation required for system governance and compliance packages (e.g., ATO compliance).
• Actively participate in all SDLC phases (systems analysis, design, build, configuration, and testing); perform unit testing, root-cause trace analysis, and system performance tuning on application components and custom code.
• Identify technical risks, formulate mitigation options, and escalate unresolved blockers to project management to ensure high-quality software solutions and on-time project delivery.

• Bachelor’s degree in Computer Science, Systems Engineering, Information Systems, or a related field.
• 5+ years of overall experience in software engineering, systems design, database management, cloud environments, or software deployment.
• 3+ years of hands-on OneStream development experience (or equivalent CPM/EPM platform development experience demonstrating a track record of successful project delivery).
• 1+ years of experience with OneStream XF configuration, installation support, or optimization.
• Proficiency in object-oriented programming using C# or VB.NET, along with practical SQL experience (SQL Server or Oracle) for data manipulation and querying.

• Master’s degree in Computer Science, Engineering, or Information Systems.
• Functional understanding of Corporate Performance Management (CPM) or Federal Financial Management concepts (e.g., Consolidations, Budgeting/Forecasting, Reconciliation, PPBE).
• OneStream Certified Specialist (OCS) in Reports & Dashboards or Financial Close, or OneStream Certified Professional (OCP) – Core Platform.
• Hands-on experience setting up Single Sign-On (SSO) and assisting with federal Authority to Operate (ATO) compliance procedures.
• Prior experience in professional services or federal IT consulting environments.
• CompTIA Security+ certification.

• US Citizenship with the ability to obtain aPublic Trust clearance or higher.

• Must be able to remain in a stationary position 50% of the time.
• Frequently communicates with co-workers, management, and government stakeholders, which may involve delivering technical presentations.
• Must be able to exchange accurate information in these situations.

Originally posted on Himalayas