Sr OneStream Developer

Guidehouse Inc.; Arlington (VA); On-site; USD 120,000 - 160,000; Full time

Benefits offered by this job

Medical insurance

401(k)

Parental Leave

Tuition Reimbursement

Mobility Stipend

Employee Referral Program

Job summary

Guidehouse Inc. is seeking a senior OneStream Architect in Arlington, VA to lead end-to-end design, development, and deployment of OneStream financial close, reconciliation, and payroll solutions.

You will mentor junior developers, collaborate with cross-functional teams, and ensure compliance with federal financial management standards while driving high-quality, scalable implementations.

Qualifications

• Ten years of enterprise application development experience.
• Five years of hands-on OneStream configuration and end-to-end implementation ownership.
• Active PUBLIC TRUST eligibility or ability to obtain.

Responsibilities

• Lead end-to-end design and deployment of OneStream applications focusing on financial close, reconciliation, and payroll management.
• Develop and maintain OneStream rules, dashboards, cube views, workflows, and reporting solutions.
• Migrate legacy Excel/Access data into OneStream with data integrity and reconciliation.

Skills

OneStream

Federal/public sector exp

Mentoring

Agile practices

Education

Bachelor's degree in engineering/computer science

Tools

OneStream Studio

ETL experience

Job description

Job Family

Software Development & Support

Travel Required

Up to 10%

Clearance Required

Ability to Obtain Public Trust

What You Will Do:

• Lead end-to end design, development, configuration, and deployment of OneStream applications that focus on financial close, financial reconciliation, and payroll management.
• Develop and maintain OneStream Business Rules, Dashboards, Cube Views, Workflow configurations, and reporting solutions.
• Conduct thorough analysis, mapping, migration, and validation of legacy Excel and Access data into OneStream applications while ensuring data integrity and reconciliation.
• Collaborate with cross-functional teams to gather business requirements, prioritize features, and manage delivery of scalable solutions that enhance transparency and efficiency.
• Lead OneStream system testing, deployments, troubleshooting, and ongoing production support.
• Ensure all OneStream applications adhere to federal financial management standards, audit readiness requirements, and applicable compliance frameworks.
• Lead technical workstreams and drive design decisions.
• Mentor and guide junior developers and manage client relationships.
• Participate in Agile ceremonies, manage backlog refinement, estimate development efforts and coordinate iterative development cycles to deliver high‑quality solutions.

What You Will Need:

• Must be able to OBTAIN and MAINTAIN a Federal or DoD "PUBLIC TRUST"; candidates must obtain approved adjudication of their PUBLIC TRUST prior to onboarding with Guidehouse. Candidates with an ACTIVE PUBLIC TRUST or SUITABILITY are preferred.
• Bachelor's degree in engineering, computer science, finance, accounting, data analytics, information systems, or a related field.
• TEN (10) years of enterprise application development and implementation with deep expertise in solution design, performance optimization, integration, and complex business rule development.
• FIVE (5) years of hands‑on OneStream configuration and end‑to‑end implementation ownership.
• OneStream Certified Associate (OCA) certification.

What Would Be Nice To Have:

• OneStream Certified Lead Architect.
• Certifications in Agile, Scrum, or project management (e.g., PMP, CSM, SAFe).
• Experience integrating OneStream with SAP or other ERP systems.
• Experience with API integrations and automation solutions and knowledge of ETL tools and data warehousing concepts.
• Knowledge of GL accounting, financial close and consolidation processes, payroll accounting and accruals, account reconciliations, journal entries and reclassifications, and retroactive and corrective adjustments.
• Understanding of federal financial management processes, audit readiness requirements, and compliance standards.
• Excellent communication and stakeholder engagement skills, with the ability to translate technical concepts into business terms.
• Experience serving as a functional and technical lead for enterprise application initiatives and can lead workshops, requirements gathering sessions, and user adoption initiatives.
• Ability to mentor junior developers, business analysts, and business users.

What We Offer :

Guidehouse offers a comprehensive, total rewards package that includes competitive compensation and a flexible benefits package that reflects our commitment to creating a diverse and supportive workplace.

Benefits include:

• Medical, Rx, Dental & Vision Insurance
• Personal and Family Sick Time & Company Paid Holidays
• Position may be eligible for a discretionary variable incentive bonus
• Parental Leave and Adoption Assistance
• 401(k) Retirement Plan
• Basic Life & Supplemental Life
• Health Savings Account, Dental/Vision & Dependent Care Flexible Spending Accounts
• Short-Term & Long-Term Disability
• Student Loan PayDown
• Tuition Reimbursement, Personal Development & Learning Opportunities
• Skills Development & Certifications
• Employee Referral Program
• Corporate Sponsored Events & Community Outreach
• Emergency Back-Up Childcare Program
• Mobility Stipend

About Guidehouse

Guidehouse is an Equal Opportunity Employer-Protected Veterans, Individuals with Disabilities or any other basis protected by law, ordinance, or regulation.

Guidehouse will consider for employment qualified applicants with criminal histories in a manner consistent with the requirements of applicable law or ordinance including the Fair Chance Ordinance of Los Angeles and San Francisco.

If you have visited our website for information about employment opportunities, or to apply for a position, and you require an accommodation, please contact Guidehouse Recruiting at 1-571-633-1711 or via email at [e-mail] . All information you provide will be kept confidential and will be used only to the extent required to provide needed reasonable accommodation.

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