Payment Processing Specialist

🚀 WE ARE HIRING | SENIOR PAYMENT GATEWAY & SERVER INTEGRATION SPECIALISTPrime Axis Strategic ConsultantsProject: European Fintech & Digital Payment InfrastructureWe are seeking a highly experienced Senior Payment Gateway Engineer / S2S & API Integration Specialist to support the development, deployment, integration and management of a secure, scalable international payment technology platform.This is a specialized technical position for professionals with proven, hands-on experience in banking payment systems, server-to-server (S2S) transactions, IP-to-IP connectivity and payment API integrations.Key Technical Requirements✅ S2S Payment Integration: Server-to-server payment processing, authentication, authorization, webhooks and transaction handling.✅ IP-to-IP Connectivity: Secure server communications, IP whitelisting, VPNs, routing, firewalls and network security.✅ Payment APIs: REST APIs, JSON/XML, banking APIs, payment gateway integrations and third-party PSP connectivity.✅ Banking Protocols: Understanding of ISO 8583, ISO 20022 and payment messaging standards.✅ Server Infrastructure: Linux/Windows server administration, VPS, dedicated servers, cloud hosting, SSL/TLS and secure deployments.✅ Payment Security: PCI DSS, encryption, tokenization, HSM integration and secure credential management.✅ Backend Technologies: Java, Python, Node.js, .NET or equivalent payment integration technologies.✅ Transaction Management: Payment authorization, capture, refunds, reconciliation, settlement, logging and monitoring.✅ Production Reliability: Load balancing, high availability, disaster recovery and troubleshooting.Candidate Profile- 5+ years of relevant professional experience preferred.- Demonstrated experience implementing live payment gateway or banking integrations.- Practical experience with European payment service providers, acquirers or financial institutions is a strong advantage.- Ability to design, deploy and troubleshoot secure production payment infrastructure.- Strong problem-solving skills and independent technical leadership.Important: General IT support, Cisco IP telephony or basic server administration alone will not qualify candidates for this specialist position.Position Details

Company: Prime Axis Strategic ConsultantsPosition: Senior Payment Gateway & S2S Integration SpecialistProject Market: Europe

Employment Type: Project-based / Contract / Full-time — subject to agreementCompensation: Competitive, based on expertise and demonstrated experience