> Markdown version of [/jobs/ext/3865823-ba-payment-middleware-integration](https://www.wearedevelopers.com/jobs/ext/3865823-ba-payment-middleware-integration). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # BA Payment/Middleware Integration - **Company:** Apptad Inc. - **Location:** Princeton, NJ, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Business Process Model and Notation, Relational Databases, Middleware, Microsoft Visio, Systems Integration, Transaction Data, Freeform SQL, Sql Optimization, ISO 20022 Standard - **Published:** October 22, 2026 - **Apply:** https://www.careerjet.com/jobad/usf1b8019f04cfc9327112ee4ac48e4941 ## About the Role * Need strong BA Background with excellent skills on, Payment & ACH Integration and writing Complex SQL Queries Business Analysis: * 6-8+ years of core BA experience in Financial Services / Capital Markets, including requirement gathering, process mapping (BPMN, Visio), gap analysis, and agile user story creation * In-depth knowledge of payment domain concepts-specifically ACH processing (NACHA rules), Fedwire, SWIFT/ISO 20022 formats, direct debits, credit transfers, and clearing/settlement mechanics. Systems Integration: * Proven track record working on integration projects connecting core ledger systems, payment engines, and external banking rails/APIs. Advanced SQL Proficiency: * Hands-on experience querying large relational databases to analyze transaction data, execute mapping validations, and conduct system troubleshooting.