ManTech

OneStream Consultant

Remote, United States remote Entry Salary not listed
remote Technology & IT Curated
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About the role

General information

Requisition #

R68221

Locations

USA-Remote Work

Posting Date

05/30/2026

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 a OneStream Consultant / Application Developer to join our team. This is a 100% Remote opportunity.
Responsibilities include but are not limited to:
 Core Application Development: Independently configure and build complex OneStream artifacts including Cubes, Workflows, Member Formulas, Confirmation Rules, and complex Extensible Dimensionality models.
UI/UX Design: Build robust and intuitive user interfaces, developing dashboards, advanced formatting string elements, and parameters to ensure seamless end-user navigation.
Data Integration & Quality: Design, build, and maintain data connectors and transformation rules. Help manage Relational Table Storage structures and interface mappings for incoming data streams.
Technical Quality Control: Author and execute test scripts to validate application updates. Assist in identifying and fixing metadata anomalies and rules syntax errors before code moves to production.
Peer Support: Assist lower-level developers or incoming team members by offering platform guidance, participating in code reviews, and sharing best practices
Minimum Qualifications:
Bachelor’s degree in Finance, Accounting, Management Information Systems, Computer Science, or a related field.
5+ years of relevant experience in software development or financial systems implementation
3+ years of dedicated OneStream implementation experience.
1+ years of OneStream XF implementation, configuration, and optimization experience.
Proven proficiency working inside OneStream frameworks, encompassing Extensible Dimensionality, Data Management Jobs, Business Rules, and Custom Relational Tables.
Database & Querying: Strong hands-on SQL experience, with the capability to evaluate execution plans, construct relational table queries, and interpret database layer indexing structures.
Scripting: Foundational understanding of VB.Net or C# scripting within the OneStream business rules environment.
Preferred Qualifications:
Completion of the OneStream Essentials Curriculum.
Possession of the OneStream Certified Associate (OCA) – Implementation Foundations certification.
Possession of a CompTIA Security+ certification.
Experience with the federal Planning, Programming, Budgeting, and Execution (PPBE) process or financial management within the government sector.
Demonstrated capability to troubleshoot complex configuration errors independently, parsing server logs and diagnostic traces to resolve system errors.
Security Clearance Requirements:
US citizenship with the ability to obtain up to a secret level clearance.
Physical Requirements:
• Must be able to remain in a stationary position 50% of the time.
• Constantly operates a computer and other office productivity machinery.

The projected compensation range for this position is -. 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.

Interview prep

Walk in with sharper answers.

Use this as a quick practice sheet before you speak with the employer.

Role
Technology & IT Accounting API integration Data Analysis Finance MySQL remote

Likely questions

  1. Tell us about work you have done that is close to the OneStream Consultant role.
  2. How would you approach your first 30 days at ManTech?
  3. Which of Accounting, API integration and Data Analysis have you used recently, and what did it help you achieve?
  4. Describe a time you solved a problem without waiting to be told exactly what to do.
  5. How do you stay organised and communicate clearly when working remotely?

Prepare before the call

  • A recent example that proves your experience with Accounting, API integration and Data Analysis.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the OneStream Consultant role because I can bring practical experience in Accounting, API integration and Data Analysis, learn the team quickly, and contribute to the outcomes ManTech needs from this hire.

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