senior Developer (Integration specialist)

At SP Transaction Hub, we are on a mission to simplify and secure digital transactions for businesses and consumers alike.Join our growing team and be a part of building the next-generation payment gateway API that powers secure commerce at scale.

We are seeking a talented and experienced Full Stack Developer to lead the design, development, and deployment of our payment gateway API infrastructure. This role requires deep understanding of secure payment systems, RESTful API architecture, full stack web development, and integration with third-party financial services.

Key Responsibilities

• Design, build, and maintain robust and secure RESTful APIs for payment processing.
• Develop frontend and backend components for payment dashboards, integrations, and admin tools.
• Work with payment protocols such as UPI, QR Code Payments, Card Payments (Visa/Mastercard/Rupay), and Wallets.
• Ensure PCI-DSS compliance, data encryption, and secure storage of payment data.
• Integrate with third-party payment processors, banks, and financial institutions.

Required Skills & Qualifications

• Proven experience in JavaScript/TypeScript (Node.js or Express.js) and React.js or similar frontend frameworks.
• Proficiency in backend development with technologies like Node.js, Python, or Java.
• Experience with SQL and NoSQL databases (e.g., PostgreSQL, MySQL, MongoDB).
• Deep understanding of REST API architecture, OAuth 2.0, JWT, and webhooks.
• Familiarity with payment gateways, banking APIs, or financial protocols (e.g., ISO 8583, UPI, NEFT).

Preferred Qualifications

• Experience in FinTech, banking, or digital wallet environments.
• Contributions to open-source or prior experience building scalable APIs.
• Familiarity with blockchain-based payments or real-time settlement systems.

Job Types: Full-time, Permanent

Pay: ₹20,000.00 - ₹40,000.00 per month

Benefits:

• Cell phone reimbursement
• Flexible schedule
• Internet reimbursement

Experience:

• Payment gateway API Integration: 1 year (Preferred)

Work Location: In person