M&A Integration Controllership Manager

Position Title: M&A Integration Controllership ManagerLocation: McLean, VAClearance Requirements: USC or GC RequiredPay Rate: $150,000Position Status: Full Time / Direct HirePosition DescriptionAre you an accounting leader with hands-on M&A integration experience who enjoys building scalable processes and leading complex financial transformations?We are seeking an M&A Integration Controllership Manager to lead the accounting and finance integration of acquisitions and divestitures within a growing enterprise. This is a 50/50 blend of technical accounting and M&A integration leadership, combining hands-on expertise in purchase accounting and financial reporting with end-to-end ownership of cross-functional execution from deal close through full operational integration.This role sits within the Corporate Controllership organization and serves as the finance lead for acquisition integration efforts from transaction close through operational integration. The ideal candidate has experience in purchase accounting, Purchase Price Allocation (PPA), post-merger integration (PMI), technical accounting, ERP integration, and financial process transformation, with the ability to influence stakeholders across Finance, Accounting, IT, HR, Legal, Treasury, and Operations.Key Responsibilities Lead finance and accounting workstreams for mergers, acquisitions, and divestitures from transaction close through full integration.Serve as the Controllership lead for cross-functional M&A integration initiatives.Manage multiple integration projects simultaneously while ensuring key milestones, deliverables, and timelines are achieved.Lead post-close accounting integration activities, including:Purchase accountingPurchase Price Allocation (PPA)Opening balance sheet preparationFair value accountingGeneral ledger (GL) mappingFinancial process integrationPartner with Finance, Technical Accounting, Financial Systems, Treasury, HR, Legal, and Operations to execute seamless integrations.Develop, maintain, and continuously improve the organization's M&A integration playbook and standardized integration processes.Evaluate accounting processes, systems, controls, and compliance requirements while identifying opportunities for improvement.Support financial reporting, journal entries, acquisition accounting, and other transaction-related accounting activities.Assess ERP integration requirements and support financial system integration initiatives.Monitor project risks, communicate progress to leadership, and drive issue resolution throughout the integration lifecycle.Promote best practices across accounting integration, governance, documentation, and internal controls.Required Skills/Education Bachelor's degree in Accounting, Finance, Business, or a related field.5+ years of experience in one or more of the following:M&A IntegrationTechnical AccountingTransaction AdvisoryAccounting AdvisoryCorporate ControllershipAuditDemonstrated experience leading post-merger integration (PMI) and finance integration initiatives.Strong knowledge of:Purchase AccountingPurchase Price Allocation (PPA)Opening Balance Sheet preparationFair Value AccountingGAAPSEC ReportingInternal ControlsExperience integrating accounting processes and financial systems following acquisitions.Experience coordinating cross-functional stakeholders across Finance, Accounting, IT, HR, Treasury, Legal, and Operations.Strong project management and organizational skills with the ability to manage multiple concurrent initiatives.Excellent communication, analytical, problem-solving, and executive presentation skills.Ability to thrive in a fast-paced, evolving environment.Preferred QualificationsBig Four public accounting experience in Transaction Advisory, Deal Advisory, Accounting Advisory, or M&A Advisory.Experience working within a publicly traded organization.CPA license.Master's degree in Accounting, Finance, or Business.PMP certification or formal Project Management training.Experience with ERP implementations or integrations.Experience using Costpoint, NetSuite, SAP, Oracle, or similar ERP platforms.Experience supporting finance integration within a government contracting environment.Experience developing standardized M&A playbooks, integration frameworks, or operational best practices.About Seneca ResourcesAt Seneca Resources, we are more than just a staffing and consulting firm—we are a trusted career partner. With offices across the U.S. and clients ranging from Fortune 500 companies to government organizations, we provide opportunities that help professionals grow their careers while making an impact. When you work with Seneca, you're choosing a company that invests in your success, celebrates your achievements, and connects you to meaningful work with leading organizations nationwide. We take the time to understand your goals and match you with roles that align with your skills and career path. Our consultants and contractors enjoy competitive pay, comprehensive health, dental, and vision coverage, 401(k) retirement plans, and the support of a dedicated team who will advocate for you every step of the way. Seneca Resources is proud to be an Equal Opportunity Employer, committed to fostering a diverse and inclusive workplace where all qualified individuals are encouraged to apply.