[Remote] Senior OneStream Consultant

Note: The job is a remote job and is open to candidates in USA. MANTECH hires a Senior OneStream Consultant to serve as the technical lead and subject matter expert for complex OneStream implementations supporting government financial planning, budgeting, close, and reporting. The role architects scalable solutions, owns technical quality and integrations, and guides consultants while engaging with government clients.

Responsibilities

• Translate complex functional PPBE and government financial close requirements into technical architecture blueprints, system designs, and multidimensional data models (Cubes, Dimensions, Member Hierarchies) built for performance and scalability
• Own the overall technical quality of application deliverables; establish development standards, conduct code reviews, enforce best practices across business rules, custom dashboards, and data integration pipelines
• Architect, write, and optimize complex custom Business Rules (Finance, Parser, Connector, Event) using VB.NET/C#, custom assemblies, and advanced SQL procedures to extend platform functionality
• Lead system health, memory, and query tuning efforts; diagnose bottlenecks, troubleshoot complex application log traces, and optimize data loading and consolidation processing times
• Direct end-to-end integration strategies, including automated data pipelines, REST API integrations, security roles/group architecture, Single Sign-On (SSO) configuration, and Authority to Operate (ATO) technical artifact preparation
• Serve as the primary technical Subject Matter Expert (SME) in client-facing architecture sessions; identify technical project risks, articulate mitigation strategies, and present solutions to senior government stakeholders
• Provide technical guidance, task delegation, and mentorship to OneStream Developers and Associate Consultants across the software development lifecycle within an Agile/Scrum environment
• Listen carefully to client and team needs, look beyond immediate "easy" solutions, and work collaboratively across MANTECH to deliver high-impact, high-quality outcomes that exceed customer expectations

Skills

• Bachelor's degree in Computer Science, Systems Engineering, Information Systems, or a related field
• 10+ years of progressive work experience in systems design, infrastructure, performance tuning/optimization, administration, cloud architecture, software development, and deployment
• 5+ years of hands-on OneStream development and technical lead experience on enterprise implementations, demonstrating a track record of successful project delivery
• Advanced proficiency in object-oriented programming with VB.NET or C# for custom business rules and assemblies
• SQL expertise (SQL Server or Oracle) for complex data manipulation, query optimization, and staging table architectures
• Deep understanding of Corporate Performance Management (CPM/EPM) concepts, multidimensional OLAP cubes, and complex financial rules/consolidations
• US Citizenship with the ability to obtain aPublic Trust clearance or higher
• Master's degree in Computer Science, Engineering, or Information Systems
• 4+ years of OneStream XF installation, environment configuration, database management, and system optimization experience
• Experience with the federal Planning, Programming, Budgeting, and Execution (PPBE) process or federal financial management systems
• OneStream Certified Professional (OCP) – Lead Architect or Core Platform certification
• Government Financial Manager (CGFM) certified or Certified Defense Financial Manager (CDFM)
• CompTIA Security+ certification
• Hands-on experience supporting government Authority to Operate (ATO) processes and federal security baseline standards
• Prior experience in management consulting or professional services

Benefits

• Depending upon position: Health Insurance
• Depending upon position: Life Insurance
• Depending upon position: Paid Time Off
• Depending upon position: Holiday Pay
• Depending upon position: short-term and long-term Disability
• Depending upon position: Retirement and Savings
• Depending upon position: Learning and Development opportunities
• Depending upon position: wellness programs
• Depending upon position: other optional benefit elections

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