OneStream Developer

MANTECH seeks a motivated, career and customer-oriented OneStream Developer 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 an OneStream Developer, you will serve as a technical lead and subject matter expert for our most complex implementations. You will transition from pure building to architecting—designing entire application modules, translating functional requirements into technical blueprints, and guiding a team of associates 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:

  • Lead the design of application modules (e.g., Workforce, Capital, Capex), creating technical specifications that translate functional requirements into scalable OneStream architecture.
  • Advanced Development: Write and optimize complex Business Rules of all types (Finance, Parser, Connector, Extender) and design sophisticated Workflow strategies to solve unique client challenges.
  • Data Strategy & Integration: Design dynamic data load processes and Custom Tables for complex datasets; create Variance Analyses to validate data integrity between source systems and OneStream.
  • Technical Leadership & Mentorship: Parse complex requirements into development tasks for Associate Consultants; conduct code reviews, teach troubleshooting techniques, and support junior staff in resolving helpdesk tickets.
  • MarketPlace & Solutions: Configure and modify MarketPlace Solutions (e.g., People Planning, Task Manager) and integrate them into the core application.
  • Reporting Strategy: Design and implement comprehensive reporting strategies using BI Viewer, Extensible Documents, and Cube Views, ensuring optimal performance and usability.

Minimum Qualifications:

  • Bachelor’s degree in computer science, Systems Engineering, Information Systems, or 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 installation, configuration, and optimization experience
  • Advanced proficiency in VB.NET or C# and SQL.
  • Deep understanding of OneStream architecture, including Data Management, Cube Design, and Security.

Preferred Qualifications:

  • Experience with the federal Planning, Programming, Budgeting, and Execution (PPBE) process or financial management within the government sector.
  • Experience assisting with ATOs, Single Sign-On (SSO), or working in a professional services/consulting firm.
  • OneStream Certified Professional (OCP)
  • CompTIA Security+ certification.

Clearance Requirements:

  • Must be a U.S. Citizen and be willing and able to obtain a Public Trust.

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
Back to blog

Common Interview Questions And Answers

1. HOW DO YOU PLAN YOUR DAY?

This is what this question poses: When do you focus and start working seriously? What are the hours you work optimally? Are you a night owl? A morning bird? Remote teams can be made up of people working on different shifts and around the world, so you won't necessarily be stuck in the 9-5 schedule if it's not for you...

2. HOW DO YOU USE THE DIFFERENT COMMUNICATION TOOLS IN DIFFERENT SITUATIONS?

When you're working on a remote team, there's no way to chat in the hallway between meetings or catch up on the latest project during an office carpool. Therefore, virtual communication will be absolutely essential to get your work done...

3. WHAT IS "WORKING REMOTE" REALLY FOR YOU?

Many people want to work remotely because of the flexibility it allows. You can work anywhere and at any time of the day...

4. WHAT DO YOU NEED IN YOUR PHYSICAL WORKSPACE TO SUCCEED IN YOUR WORK?

With this question, companies are looking to see what equipment they may need to provide you with and to verify how aware you are of what remote working could mean for you physically and logistically...

5. HOW DO YOU PROCESS INFORMATION?

Several years ago, I was working in a team to plan a big event. My supervisor made us all work as a team before the big day. One of our activities has been to find out how each of us processes information...

6. HOW DO YOU MANAGE THE CALENDAR AND THE PROGRAM? WHICH APPLICATIONS / SYSTEM DO YOU USE?

Or you may receive even more specific questions, such as: What's on your calendar? Do you plan blocks of time to do certain types of work? Do you have an open calendar that everyone can see?...

7. HOW DO YOU ORGANIZE FILES, LINKS, AND TABS ON YOUR COMPUTER?

Just like your schedule, how you track files and other information is very important. After all, everything is digital!...

8. HOW TO PRIORITIZE WORK?

The day I watched Marie Forleo's film separating the important from the urgent, my life changed. Not all remote jobs start fast, but most of them are...

9. HOW DO YOU PREPARE FOR A MEETING AND PREPARE A MEETING? WHAT DO YOU SEE HAPPENING DURING THE MEETING?

Just as communication is essential when working remotely, so is organization. Because you won't have those opportunities in the elevator or a casual conversation in the lunchroom, you should take advantage of the little time you have in a video or phone conference...

10. HOW DO YOU USE TECHNOLOGY ON A DAILY BASIS, IN YOUR WORK AND FOR YOUR PLEASURE?

This is a great question because it shows your comfort level with technology, which is very important for a remote worker because you will be working with technology over time...