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I will build a secure payment gateway and fintech backend in java spring boot
mahfouds
About this gig
Looking for a payment or fintech backend built by someone who does it for a living? You found the right seller.
I am a Payment Systems Engineer at a global fintech company whose platform is used by banks worldwide. I have worked on core payment products (Switch, Fraud, ATM, x-POS) and integrated systems with Visa.
I CAN BUILD FOR YOU:
- Payment gateway and payment API integration (Stripe, PayPal, and more)
- Secure transaction and wallet backends in Java and Spring Boot
- Fraud and validation logic for payments
- Event-driven processing with Kafka
- Security by design: OAuth2, JWT, Keycloak, encryption
- Clean, tested, documented, production-grade code
Every project delivered securely, with full source code and discretion (NDA welcome). Message me your requirements for an honest, free assessment before you order.
Get to know mahfouds
mahfouds
Full Stack and AI Engineer, Payment Systems, Java, Spring Boot
- FromMorocco
- Member sinceMay 2022
- Avg. response time1 hour
Languages
English, Arabic, French
Software and Payment Systems Engineer with 3+ years at HPS Worldwide, a global fintech whose payment platform is used by banks worldwide. I collaborate in a core payment solutions migrated critical systems to secure, event-driven microservices and collaborated an LSTM fraud-detection model integrated with international fraud detectors scoring. Security by design: Keycloak, OAuth2, JWT. Stack: Java, Spring Boot, Kafka, PostgreSQL, Angular, Python, AWS. Master's in Data Science. I deliver reliable, tested, production-grade code you can trust.
FAQ
Is my project confidential?
Yes, complete discretion and I am happy to sign an NDA.
Can you integrate a specific payment provider?
Yes, tell me which and I will confirm feasibility before you order.
Do you handle security?
Yes, OAuth2, JWT, Keycloak, and encryption are built in.
