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Payment Integration Analyst at OnHires. Remote Location: Remote - Ukraine. Our client is an AI-driven payment platform focused on conversion in complex markets. They convert where others fail.. They help merchants process more successful transactions by combining:. - strong regional presence,. - real-time AI routing,. - and deep payment analytics.. Сompany supports the most popular local payment methods across Europe, while their core expertise is in Africa and Latin America - markets where payments are operationally difficult and directly affect revenue.. They are looking for a . Payment Integration Analyst. to help us integrate new payment systems and improve existing integrations. In this role, you will analyze how payment providers work, prepare technical requirements for developers, and ensure everything functions correctly.. Responsibilities. Research payment systems:. - Study payment provider documentation (APIs, workflows, limitations).. - Understand authentication mechanisms (tokens, signatures, certificates).. - Evaluate whether a specific provider is a good fit for our needs.. Analyze payment processes:. - Understand payment flows: charges, refunds, subscriptions.. - Review payment security measures (3D Secure, card tokenization).. - Analyze how payment status notifications work (webhooks).. API testing:. - Build and send requests to payment systems (using Postman or similar tools).. - Validate request signatures.. - Prepare request collections for the team.. - Work with provider sandbox/test environments.. Documentation:. - Write technical specifications for developers (what needs to be built and how).. - Create field and error mapping tables.. - Design process flows (step-by-step payment journeys).. - Prepare checklists for validating completed integrations.. Collaboration:. - Work closely with developers, QA engineers, and integration managers.. - Clarify requirements during development.. - Conduct demos and acceptance testing.. - Maintain documentation in Confluence/Jira.. Quality control:. - Prepare test scenarios for integrations.. - Help investigate issues and troubleshoot problems.. - Update documentation when providers introduce changes.. Requirements. Must-have. - . 1,5–2 years of experience. as an analyst in . fintech, payments, or similar domains.. - . Understanding of payment systems. : card payments, alternative payment methods, 3D Secure, settlement processes.. - . Experience working with APIs. : REST APIs, JSON/XML, ability to read API documentation.. - . Confident use of Postman. for API testing.. - . Understanding of security concepts. : request signing (HMAC, RSA), tokens (OAuth, JWT).. - . Ability to write clear technical requirements. (user stories, acceptance criteria).. - . Experience with diagrams and process flows. (UML, BPMN).. - . Basic SQL for data validation. .. - . Experience with Jira/Confluence.. - English - B1 (Intermediate).. Nice to have:. - Experience integrating with payment providers (Adyen, Stripe, . Checkout.com. , PayU, Fondy, etc.).. - Ability to write simple scripts (Python/Node.js) for automation.. - Knowledge of Apple Pay / Google Pay.. - Understanding of AML/KYC requirements.. - Experience with payment reconciliation processes.. What we offer. - Work with modern payment technologies.. - Opportunity to influence payment solution decisions.. - Experience working with international providers.. - Growth in the fintech and payment systems domain.. - Remote or hybrid work format (to be discussed).. Expected outcomes:. - Payment provider evaluation reports.. - Integration technical specifications.. - Ready-to-use Postman collections with instructions.. - Test plans and scenarios.. - Documentation for post-launch support.