Senior OneStream Consultant

General information

Requisition # R65581 Locations USA-Remote Work Posting Date 02/05/2026 Security Clearance Required Public Trust/Suitability Remote Type Fully Remote Time Type Full time

Description & Requirements

Elevate your career with MANTECH International Corporation! Join a dynamic team dedicated to national security through cutting-edge technology. Since 1968, MANTECH has led in delivering advanced solutions to government intelligence, the Department of Defense, and Federal Civilian sectors. Dive into innovation in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Your journey to impactful work and rapid growth starts now—be extraordinary at MANTECH!

MANTECH seeks a motivated, career and customer-oriented Senior 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 (PPBE) solutions.

As a Senior OneStream Consultant, you will serve as a Solution Architect and Practice Leader. You will move beyond single-project delivery to oversee the architectural integrity of multiple engagements. You are the "expert’s expert” guiding the firm’s technical strategy, leading high stakes solutioning workshops with prospective clients, and mentoring the next generation of OneStream talent. You will drive innovation by defining best practices for data strategy, security, and application design across the practice.

Responsibilities include but are not limited to:

• Design scalable, multi-cube architectures and extensibility strategies that serve as the blueprint for complex government implementations; oversee the technical quality assurance across multiple active projects to ensure optimal "Data Unit" design.

• Own internal Learning & Development (L&D) initiatives; organize study groups, lead "Level Up" technical sessions, and serve as a dedicated mentor to Senior and Staff consultants on advanced optimization techniques.

• Lead technical solutioning sessions and demonstrations for prospective clients; build rapid prototypes (Dashboards, Workflows) to demonstrate proof-of-concept capabilities and support RFI/RFP technical responses.

• Serve as the final escalation point for the most complex technical challenges (e.g., performance tuning, complex business rule optimization, custom Marketplace integrations) across the division.

• Define practice-wide standards for data integration, validation, and transformation; design reusable artifacts for Data Management and "Custom Tables" to accelerate delivery.

• Design comprehensive security models and auditing frameworks; produce security architecture diagrams and automate audit reviews (e.g., inactivity reports) to ensure rigorous government compliance.

Minimum Qualifications:

• Bachelor’s degree in computer science, Systems Engineering, Information Systems, or related