General information Requisition # R68653 Locations USA-Remote Work Posting Date 06/12/2026 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 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) and Financial Close and Reporting solutions leveraging the OneStream platform. As a Senior OneStream Consultant, you will serve as a technical lead and subject matter expert for our most complex implementations. You will work as the Architect—designing entire application modules, 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 that include security models, event processes, custom dashboards, reports, business rules, and member formulas, with a focus on enhancing system functionality and efficiency Actively participating in various phases of the software development cycle, ranging from systems analysis and design to development, configuration, testing, debugging, and documentation, to ensure the delivery of high-quality software solutions Designing and creating financial reports and dashboards based on specific client requirements while adhering to industry best practices to ensure the delivery of accurate and meaningful insights Identifying potential project risks, providing risk mitigation options, and escalating unresolved risks to project management to ensure timely resolution and minimal impact on project timelines Designing and building data conversion and data load artifacts throughout various project phases, to ensure smooth data migration and accuracy 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 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 Experience leading with a Consulting Mindset: listening carefully to what others need (client and team members) and being willing and ready to respond to those needs to the best of your ability; looking beyond the “easy” answer working collaboratively to bring the best Mantech has to offer to exceed others’ expectations. Minimum Qualifications: A bachelor’s degree in computer science, Systems Engineering, or Information Systems or related field 10+ years of work experience in systems design, infrastructure, tuning/optimization, cloud, development, and deployment 5+ years of relevant OneStream experience or comparable experience performing software development, demonstrating a track record of successful project delivery 4+ years of OneStream XF installation, configuration, and optimization experience Familiar with C# or VB.NET, to handle technical requirements of the role SQL experience with SQL Server or Oracle databases, to manage and manipulate data effectively Strong analytical and problem-solving abilities, to navigate through complex situations and provide effective solutions Preferred Qualifications: Master’s degree in computer science, engineering, or information systems Experience with the federal Planning, Programming, Budgeting, and Execution (PPBE) process or financial management within the government sector. VB.NET development experience and/or any object-oriented programming languages Experience assisting with ATOs and setting up Single Sign-On for applications Work experience in a professional services company and/or a 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 Public Trust or higher 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 The projected compensation range for this position is $189,200.00-$346,400.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation. MANTECH’s benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections. MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation. If you need a reasonable accommodation to apply for a position with MANTECH, please email us at [email protected] and provide your name and contact information.

Senior OneStream Solution Architect

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