Senior Project Manager

Senior Project Manager – HR & Payroll Workstreams (ERP Transformation) Engagement Type: Contract -- 6 months with likely extension through 9-30-2027. Location: Can be 100% remote, with light travel to Los Alamos, NM. We are seeking an experienced Senior Project Manager to lead the HR and Payroll functional workstreams within our enterprise-wide transformation from Oracle to SAP S/4HANA. This role will be responsible for day-to-day delivery execution and operates under the guidance of the Program Manager to ensure alignment with overall program objectives, timelines, and interdependencies. The role serves as the key point of coordination between functional teams, program leadership, and vendors. This is a hands-on delivery role requiring strong structure, accountability, and the ability to operate effectively within a highly matrixed program environment. Key Responsibilities • Drive day-to-day project operations within HR and Payroll workstreams to achieve program objectives • Ensure timeline coordination and adherence to scope, plan of record, and project controls expectations (PCE) • Develop, maintain, and manage detailed project plans and schedules, aligned with program milestones • Collaborate closely with functional team members, SMEs, and workstream leads • Identify, document, and manage workstream-level risks, issues, and dependencies • Drive resolution of risks and issues within the HR/Payroll scope; escalate cross-workstream or program-level impacts as needed • Coordinate with business owners, functional SMEs, and technical teams to ensure readiness and adoption • Serve as the primary escalation point within the HR and Payroll workstreams, elevating broader issues to the Program Manager as needed • Coordinate day-to-day activities with functional teams and vendors to ensure timely, high-quality deliverables Minimum Requirements • 8+ years of project management experience, including 5+ years managing ERP-related workstreams • Demonstrated experience leading HR and Payroll components of major ERP implementations (preferably SAP S/4HANA) • Strong understanding of HR and Payroll business processes and compliance requirements • Proven ability to operate within a structured program governance model, collaborating with a Program Manager, Implementation Planner, and multiple workstream leads • Strong risk, issue, and dependency management experience • Proficiency with project management tools (e.g., MS Project, Jira) · Work to be performed for US gov’t agency in a national security context; therefore, US citizenship is a firm requirement. (Security clearance not a requirement at this time). Preferred Experience • Experience with SAP S/4HANA strongly preferred; experience transitioning from Oracle EBS to SAP S/4 HANA is a plus • Experience working with system integrators and implementation planners on ERP programs • Experience working in organizations with complex stakeholder environments (federal, regulated industries, or large enterprises) • PMP or equivalent certification preferred • Background in Agile or hybrid delivery models within ERP programs • Experience working within a federal, research, or DOE national laboratory environment is a plus, but not required Ideal Candidate Profile • Highly organized and capable of balancing detailed workstream execution with broader program alignment • Strong sense of ownership and accountability for delivery outcomes • Comfortable navigating ambiguity and driving clarity • Proactive, collaborative, proactive, and effective at building strong partnerships across business, IT, and vendors IMS is an Equal Opportunity Employer; all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other protected characteristic under applicable law.