Senior Full-Stack Developer Payment Processing Platform (Remote – Philippines Only)

Unlock your potential with Quantum ePay Were a full-service financial technology provider that helps business owners lower their costs earn more money and improve their quality of life. We offer truly innovative payment processing solutions and an ever-expanding line of products to boost productivity enabling our clients to operate efficiently and effectively in confidence.

Were seeking an experienced Senior Full-Stack Developer for a long-term full-time remote role. Applicants must be currently based in the Philippines. In this role youll join our engineering team working on a mission-critical payment processing platform. Youll be responsible for developing maintaining and scaling features across our multi-tenant Laravel monolith that processes millions in transactions annually.

ESSENTIAL DUTIES AND 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/

TECH STACK

• Backend: Laravel 12 PHP 8.4 MySQL/PostgreSQL Redis
• Frontend: React Vue 2 v2 Livewire v3 Tailwind CSS 3/4
• Payment Processing: Custom ACH chargeback handling risk assessment
• APIs: REST API OAuth2 (Laravel Passport) webhooks
• Infrastructure: Docker AWS S3 SFTP Redis Pusher
• Security: PCI DSS compliance encryption secure file handling
• Testing: PHPUnit Laravel Dusk browser automation
• Code Quality: Laravel Pint Larastan PHPStan

TECHNICAL REQUIREMENTS

• 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 experience 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

NICE TO HAVES

• 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/
• PDF generation document processing
• International payment processing

DOMAIN KNOWLEDGE

• Understanding of merchant services industry
• Knowledge of payment card industry standards
• Experience with financial risk assessment
• Familiarity with banking integrations

SOFT SKILLS

• 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

EDUCATION & EXPERIENCE

• Bachelors degree in Computer Science Software Engineering or related field
• 4 years professional software development experience
• Experience with high-stakes mission-critical applications
• Background in fintech payments or financial services preferred

ELIGIBILITY REQUIREMENTS

• 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

Required Experience:

Senior IC