OneStream Senior Developer; Software Engineering, Associate

One Stream Senior Developer (Software Engineering, Associate) Position Location Washington, DC

The MIL Corporation seeks an One Stream Senior Developer (Software Engineering, Associate) to support the implementation of One Stream software for federal government clients in the Washington, DC metro area.

This position currently requires a hybrid schedule. Schedule is subject to change based on company/contract requirements.

Lead the full project lifecycle including requirements, design, development, testing, and documentation.

Design, configure, and implement One Stream solutions including Cube Views, Business Rules, Dashboards, Market Place Solutions, and Workflow Profiles.

Create user interface elements, BI Viewer dashboards, and Extensible Documents to support reporting requirements.

Support configuration of functional financial requirements including financial close and financial reporting

Support documentation and training materials.

Troubleshoot, debug, and resolve platform issues.

None

5+ years of experience with One Stream including end-to-end implementation.

Expertise in platform design, performance, integration and Business Rules

Experience with One Stream or another enterprise planning platform

Experience working with APIs and system integrations.

Excellent written and verbal communication skills, including client-facing and technical writing

Federal or DoW financial management and reporting experience

Familiarity with financial modules including Financial Close, FP&A, and/or Operational Reporting

One Stream certifications

Familiar with C# or , SQL Server or Oracle databases

Experience with ATOs and Single Sign-On

BA/BS degree in Computer Science, Information Technology, Engineering, Data Science, or another relevant technical or business field, or equivalent relevant experience.

Ability to obtain Secret Clearance

The MIL Corporation values your contributions and offers a range of benefits to support your overall well-being. We are pleased to offer a comprehensive range of benefits to our full-time employees which include health, life, disability, and retirement plans, as well as paid time off, opportunities for professional growth and tuition assistance. Additional benefits and incentives may also apply, which will be communicated during the hiring process.

For this position, the projected compensation range is $120,000 - $180,000 per year. This estimate represents the typical salary range and is just one part of MIL’s complete compensation package. Final salary for this position is determined based on factors such as individual qualifications, education, experience, and contractual limitations. Learn more on the MIL Careers page.

The MIL Corporation (MIL) is a dynamic workforce of industry professionals who deliver world-class solutions in cyber, engineering, financial management, and information technology – and we are looking for candidates like you! MIL offers opportunities for professionals at all stages of their careers, from early‑career candidates to experienced industry professionals. We are known for a collaborative, people-first culture where employees are supported, valued, and encouraged to grow.

This commitment to our people and our work is reflected in the industry and workplace awards MIL has received over the years.

• 2017 - 2025 Top Workplaces Award, Greater Washington Area (The Washington Post)
• 2018 - 2025 Certified Great Workplace, Great Place to Work®
• 2021 - 2025, Best Workplaces in Consulting & Professional Services™
• 2021 Fortune Best Workplaces for Millennia ls™
• 2018 Fortune, Great Place to Work:
  Best Place to Work for Diversity
• 2017, 2020 - 2025 Top Workplace Award, South…