Senior OneStream Solution Architect

General information

Requisition # R67534 Locations USA-Remote Work Posting Date 05/06/2026 Security Clearance Required None 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 Architect 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)  and Financial Close and Reporting solutions leveraging the OneStream platform.

As a Senior OneStream Architect, you will serve as a technical lead and subject matter expert for our most complex implementations. You will work as the Lead Architect—designing entire applications, complete solutions, translating functional requirements into technical blueprints, and guiding a team of Lead Consultants and Associate Consultants 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:

• Applying advanced theoretical knowledge of Computer Science and Engineering principles to proficiently develop, write, test, troubleshoot, and document code and interfaces for financial management applications using the OneStream XF platform

• Developing and troubleshooting a variety of components including, but not limited to metadata, workflows, security models, event processes, custom dashboards, reports, business rules, member formulas, relational database solutions, and all methods of data integration, conversion and migration artifacts, with a focus on enhancing system functionality and efficiency

• Actively participating in all phases of the software development cycle (specifically full-scale OneStream platforms), ranging from systems analysis and design to development, configuration, testing, debugging, performance tuning, risk identification/remediation, and documentation to ensure the delivery of high-quality software solutions in a timely manner

• Working in an agile environment, applying agile practices, and actively participating in daily stand-ups and scrum activities to foster collaborative and efficient project management

• Continually expanding your knowledge of OneStream through comprehensive training, financial processes, and industry best practices, to stay abreast of the latest trends and enhance your professional growth