Senior Full Stack Engineer (Remote)
Remote · Philippines or Manila, Metro Manila, Philippines
Job Summary
Senior Full Stack Engineer to design PCI-compliant payment processing systems and admin dashboard functionality for an oil and gas payment platform. Responsibilities include backend architecture for secure payment processing (credit cards, ACH, digital wallets), transaction lifecycle management, payment gateway integrations, admin dashboard APIs, high-volume database design, tokenization/encryption and fraud detection aligned with PCI DSS, RESTful API development with robust error handling and authentication, webhook capabilities, and performance optimization to ensure sub-3-second processing during peak periods. The role excludes pure frontend/UI work, DevOps infra, project management, QA automation beyond unit tests, and merchant onboarding. Preferred candidates will have 5+ years in backend/.NET Core, frontend React/TypeScript, SQL Server expertise, and experience with payment processors; fintech domain experience and microservices awareness are a plus. Remote work is supported.
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