Remote Implementation Project Manager (ONESOURCE)

Piper Companies is seeking an Implementation Project Manager to join a Professional Services team supporting the implementation of Thomson Reuters OneSource solutions. . This role will lead cross-functional teams through complex software implementations for large enterprise clients, ensuring successful delivery of tax technology solutions. The ideal candidate will have experience managing multiple projects, ERP integrations, and a strong client advisory mindset. This position will require up to 40% travel! Responsibilities of the Implementation Project Manager include: • Lead end-to-end implementation of ONESOURCE tax technology solutions for enterprise clients. • Manage a portfolio of projects, including one large initiative, several mid-sized projects, and smaller engagements. • Collaborate with client stakeholders to define scope, timelines, and deliverables. • Integrate ONESOURCE with ERP systems such as SAP (preferred) or Oracle. • Develop and maintain project budgets, timelines, and resource plans. • Conduct scoping sessions and milestone reviews; ensure alignment with client objectives. • Drive optimization and enhancements post-implementation, including new features and upgrades. • Support change management initiatives and advise clients on workflow improvements. • Identify opportunities for expanded engagement, including AI deployment reviews and SaaS integrations (e.g., Co-Counsel for legal). Qualifications for the Implementation Project Manager include: • 5+ years of experience managing software implementation projects in enterprise environments. • Strong background in ERP systems (SAP preferred, Oracle acceptable). • Experience with tax technology or indirect taxation software (ONESOURCE experience is a plus). • Proven ability to lead techno-functional teams through complex integrations. • Excellent communication and client-facing skills with a consultative approach. • Strong budgeting and cost management experience. • Bachelor’s degree in Business, Information Technology, or related field. • Ability to travel up to 40% Preferred Skills: • Familiarity with ONESOURCE or similar tax technology platforms (Avalara, Vertex). • Experience in large-scale ERP integrations and global deployments. • Change management and consulting experience. • PMP certification or equivalent project management credentials. Why You’ll Love This Role: • Join a global leader with a robust 2026 sales pipeline and thousands of projects in flight. • Work on high-impact implementations with opportunities to advise on AI and SaaS integrations. • Collaborative culture that values long-term commitment and professional growth. Compensation for the Implementation Project Manager includes: • Salary: $150,000 – $190,000 *Depending on experience* • Full Benefits: Medical, Dental, Vision, 401k, PTO, and Paid Holidays Keywords: Implementation Project Manager, ERP Integration, SAP Project Manager, Oracle Project Manager, ONESOURCE Implementation, Tax Technology, Professional Services, Software Deployment, Techno-Functional PM, Enterprise Software, Project Budgeting, Client-Facing PM, Remote Project Manager, Global ERP Integration, Tax Compliance Software, Avalara, Vertex, SaaS Integration, AI Deployment, Change Management Apply tot his job