Job Summary
Job Description – Senior .NET Developer (Cards / Payments)
Position: Senior .NET Developer – Cards & Payments
Experience :8+ Years (hands on)
Role Summary
We are seeking an experienced .NET Developer with strong Cards and Payments domain expertise to design, develop, and support enterprise-grade payment applications. The ideal candidate should possess hands-on experience in payment processing platforms, card payment systems, transaction lifecycle management, and modern .NET technologies.
Key Responsibilities
Key Responsibilities
- Design and develop scalable payment and card-processing applications.
- Build and support high-volume transaction processing systems.
- Develop APIs for payment gateways and third-party integrations.
- Work on card transaction lifecycle—from authorization through settlement.
- Ensure applications meet security and PCI-DSS compliance requirements.
- Troubleshoot production issues and provide L3 support.
- Participate in architecture reviews and technical design discussions.
- Collaborate with business analysts, architects, QA teams, and payment SMEs.
Nice to Have
- Exposure to Open Banking.
- Experience with Payment Gateway integrations (Stripe, Adyen, Worldpay, Fiserv, etc.).
- Azure Kubernetes Service (AKS).
- Docker & Kubernetes.
- Event-driven architectures.
- Fraud Monitoring Systems.
- Payment Modernization Programs.
Skill Requirements
Mandatory Technical Skills
.NET Technologies
- 8+ years of hands-on experience in:
- C#
- ASP.NET MVC / ASP.NET Core
- .NET Framework / .NET Core
- Web API / REST Services
- Entity Framework
- LINQ
- Microservices Architecture
Database
- SQL Server
- Stored Procedures
- Query Optimization
- Database Design
Cloud & DevOps
- Azure /AWS Cloud
- DevOps
- CI/CD Pipelines
- Git / GitHub
Integration & Messaging
- REST APIs
- SOAP Services
- JSON/XML
- Kafka / MQ / RabbitMQ (preferred)
Cards & Payments Domain Expertise (Mandatory)
Strong working experience in one or more of the following areas:
Card Payments
- Credit Card Processing
- Debit Card Processing
- Prepaid Cards
- Virtual Cards
- Card Issuing & Acquiring
Payment Processing
- Authorization
- Clearing & Settlement
- Reconciliation
- Chargebacks & Disputes
- Transaction Monitoring
Card Networks
- Visa
- Mastercard
- AMEX
- Discover
Payment Standards
- ISO 8583
- ISO 20022
- PCI-DSS Compliance
Payment Platforms
- Merchant Payment Systems
- Payment Gateway Integrations
- Real-Time Payments
- Digital Payments
- Open Banking APIs
These domain areas align with internal Payments & Cards capability focus areas such as Cards, Merchant Solutions, Real-Time Payments, Payment Security, and Payment Processing.