Quantum ePay™ · 2 weeks ago
Senior Full-Stack Developer - Payment Processing Platform
United States
Contract
Remote
Mid, Senior Level
4+ years expQuantum ePay™ is a full-service financial technology provider that offers innovative payment processing solutions. They are seeking an experienced Senior Full-Stack Developer to join their engineering team, responsible for developing and maintaining features across their payment processing platform.
Financial ServicesFinTechPayments
No H1B
Responsibilities
Design, develop, and maintain full-stack features across Atlas, Merchant Dashboard, and payment processing systems
Implement secure payment workflows, ACH processing, and financial transaction logic
Build responsive merchant onboarding applications with complex underwriting rules
Optimize database queries and payment processing performance for high-volume transactions
Collaborate with product managers, compliance teams, and payment processors
Participate in code reviews and mentor developers on payment industry best practices
Contribute to PCI DSS compliance and security implementations
Work with legacy systems (Vue 2) while modernizing to React/Inertia.js
Qualification
Required
Strong PHP/Laravel Expertise: 4+ years PHP development, 2+ years Laravel (Laravel 10+ preferred)
Payment Processing Experience: Understanding of payment gateways, ACH, PCI DSS, financial transactions
Database Design: Complex Eloquent relationships, query optimization for financial data
Frontend Development: React proficiency, Vue.js experience, Inertia.js knowledge
Security-First Mindset: Experience with financial data handling, encryption, compliance
API Development: RESTful API design, OAuth2 implementation, webhook handling
Testing: PHPUnit for backend, Dusk for end-to-end testing
Bachelor's degree in Computer Science, Software Engineering, or related field
4+ years professional software development experience
Experience with high-stakes, mission-critical applications
Must be based in the Philippines
Must be available for full-time, long-term work
Comfortable working as an independent contractor
Reliable internet and remote work setup
Preferred
Experience with payment processing platforms or fintech
Knowledge of ACH networks, chargeback processes, underwriting
Multi-tenant application architecture
Legacy system modernization (Vue 2 to React)
Docker containerization and deployment
AWS services (S3, SES, etc.)
Real-time features with Pusher/Socket.io
PDF generation, document processing
International payment processing
Understanding of merchant services industry
Knowledge of payment card industry standards
Experience with financial risk assessment
Familiarity with banking integrations
Strong analytical skills for complex business logic
Experience working in regulated environments
Ability to handle sensitive financial data responsibly
Collaborative team player with cross-functional experience
Passion for building reliable, secure financial systems
Company
Quantum ePay™
Quantum ePay™ is a Financial Technology company that helps businesses of all types and sizes accept payments, increase revenues, and enhance customer experience.
51-200 employees
Funding
Current Stage
Growth StageLeadership Team
Darren Anderson
Limited Partner, Vice Chairman
Company data provided by crunchbase