Bengaluru, Karnataka
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.
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