One Inc Payment Integration Expert

4 days ago

Remote, Oregon, United States From, The Digital Transformation Agency( Full time $100,000 - $150,000 per year

One Inc Payment Integration Expert Role

Overview:

We are looking for a Payment Integration Expert with deep expertise in One Inc APIs (Wallets, Tokenization, Real-Time Payments, Refunds, MergeParty) and enterprise payment systems. This role leads API integration efforts between payment platforms and core business systems, ensuring secure, compliant, and real-time payment operations.

Key Responsibilities:

  • Lead the design and implementation of payment gateway API integrations (Wallets, Payments, Refunds, Tokenization).

  • Define field mappings and data transformations between legacy systems and One Inc endpoints.

  • Develop and validate RESTful API calls, manage authentication (OAuth2), and configure webhooks for event notifications.

  • Collaborate with architects and developers to ensure end-to-end data consistency and traceability.

  • Design and implement tokenization and PCI-DSS compliant workflows for secure payment data handling.

  • Create and maintain API documentation, Postman collections, and sandbox validation test suites.

  • Support testing cycles, deployment readiness, and post-go-live troubleshooting.

  • Work with compliance and security teams to validate adherence to PCI-DSS and One Inc certification standards.

Skills & Experience Must Have:

  • 6–10 years of experience in payment system integration or FinTech API development.

  • Deep understanding of the One Inc API suite (PremiumPay, ClaimsPay, Wallet, Tokenization, MergeParty).

  • Strong expertise in RESTful APIs, JSON, OAuth2, and webhook configuration.

  • Proven experience designing real-time payment flows, including recurring billing and refunds.

  • Working knowledge of PCI-DSS and secure payment data management.

  • Ability to work with Postman, Swagger, and similar API testing tools.

  • Hands-on experience integrating third-party payment gateways into enterprise systems.

Good to Have:

  • Experience integrating AS400 or legacy mainframe systems with modern payment APIs.

  • Familiarity with cloud security frameworks and encryption key management.

  • Understanding of acquirer networks, payment reconciliation, and refund settlement flows.

  • Experience with CI/CD pipelines and deployment automation for integration environments.

  • Strong technical communication skills and client interaction experience in enterprise delivery. Qualifications:

  • Bachelor's degree in computer science, Engineering, or related field.

  • Certifications in Payment Systems, API Development, or Information Security (preferred).

Job Type: Contract

Pay: From $100.00 per hour

Work Location: Remote

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