## Sr OneStream DeveloperApply: US - VA, Arlington: Full time: Posted Today: 44094**Job Family:**Software Development & Support**Travel Required:**Up to 10%**Clearance Required:**Ability to Obtain Public Trust**What You Will Do:**Guidehouse is currently seeking a qualified OneStream Senior Developer to support Guidehouse's Defense & Security Segment. Responsibilities will include, but are not limited to:* 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