Senior Technical Business Integration Manager (Finance) - Melville, NY

About Accommodations Plus International

API is the global leader in crew accommodation technology & services for the airline industry, with a strong service base in rail, cruise lines and sports teams. For more than 40 years, we have been offering a powerful combination of crew accommodation services delivered through innovative technology, unique software solutions, and a highly experienced team of service professionals, enabling our clients to maximize savings in all areas of travel operations.

Our Company is globally-supported by 794 employees and full-time dedicated consultants working from 59 locations around the world and is privately-held and headquartered in Melville, Long Island, New York.

Position Overview: 

This role is responsible for gathering and documenting accounting business rules to support implementation of the API eInvoice product within client environments. It includes supporting the Implementation project team with fact-finding, client data (GL, cost and BU codes), process flows, and detailed requirements tied to ERP systems such as Oracle, SAP, Microsoft Dynamics, Sage, and NetSuite. These requirements inform product configuration and, at times, new feature development.

The role is key to delivering financial operations, billing, and eInvoicing solutions across enterprise environments, bridging clients, finance, technology, and delivery teams to ensure successful implementation.

The ideal candidate has experience in accounting or AP/AR, ERP systems, and client-facing implementations across the project lifecycle.

Success in this Role

• Delivers project milestones and client deliverables on time through effective planning, prioritization, and risk management across complex implementations.
• Conducts strong discovery to deliver accurate, complete requirements
• Demonstrates strong, clear communication across clients and internal teams to ensure alignment

What You'll Do

Essential Functions: Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions. 

Key Responsibilities

• Lead requirements gathering sessions with clients and internal stakeholders to capture business, accounting, billing, and invoicing needs.  

• Define, analyze, and document business and functional requirements related to accounting systems and eInvoicing platforms.  

• Ensure requirements accurately reflect contractual terms, billing rules, and financial controls.  

• Maintain clear requirements traceability throughout design, build, test, and deployment phases 

• Apply practical knowledge of accounts payable/receivable processes, invoicing cycles, and accounting methodologies.  

• Validate that system configurations align with contractual billing rules and financial governance requirements.  

• Conduct audits and detailed reviews of invoices to ensure accuracy, compliance, and adherence to contractual agreements.  

• Analyze reservations, supporting documentation, and invoice calculations using tools such as Excel. 

• Support implementation and integration of ERP and accounting systems in enterprise environments, including Oracle, SAP, Microsoft Dynamics, Sage, NetSuite 

• Collaborate with technical teams to ensure accurate data flow between ERP, eInvoicing, and billing platforms.  

• Participate in API‑based eInvoicing product demonstrations for clients where required. 

• Apply understanding of the Software Development Lifecycle (SDLC) and exposure to Agile/Scrum methodologies.  

• Attend and contribute to project meetings and delivery checkpoints.  

• Execute assigned tasks in line with project schedules and proactively report risks, issues, or delays. 

• Operate comfortably in a client‑facing role, engaging with airline, rail, hospitality, or large corporate partners.  

• Manage vendor interactions related to invoicing, reconciliation, and payments.  

• Maintain strong, professional relationships while balancing client expectations and contractual obligations. 

• Deliver comprehensive training sessions to new client partners on billing and eInvoicing processes, as well as any r