Senior Full Stack Engineer (Remote)
One of the core contributors for the development of core payment processing systems and admin dashboard functionality for our oil and gas industry payment platform. This role requires deep expertise in both backend payment processing architecture and frontend dashboard development, with primary focus on backend systems that handle financial transactions at scale.
Core Responsibilities
Payment Processing Architecture: Design and implement secure, PCI-compliant payment processing systems supporting credit cards, ACH, and digital wallets
Transaction Management: Build comprehensive transaction lifecycle management including processing, refunds, voids, and settlement reconciliation
Payment Gateway Integration: Architect and implement integrations with multiple payment processors while maintaining flexibility to switch providers
Admin Dashboard Backend: Develop robust APIs for transaction monitoring, customer management, and merchant administration
Database Design: Design and optimize database schemas for high-volume transaction processing and real-time reporting
Security Implementation: Implement tokenization, encryption, and fraud detection systems meeting PCI DSS compliance requirements
API Development: Create RESTful APIs with consistent error handling, authentication, and webhook capabilities
Performance Optimization: Ensure sub-3-second transaction processing times and system scalability for high-volume periods
What They Will NOT Do
Pure Frontend Development: Will not focus primarily on UI/UX design or embeddable widget styling
DevOps Infrastructure: Will not manage Azure cloud setup, CI/CD pipelines, or infrastructure deployment
Project Management: Will not handle sprint planning, stakeholder coordination, or timeline management
Quality Assurance: Will not perform systematic testing or test automation (beyond unit testing)
Business Development: Will not engage in merchant onboarding processes or client-facing activities
Key Accountabilities & KPIs
Transaction Processing Performance: Maintain