Senior Technical Lead - .Net, Azure, C#

Municipiul Bucuresti, Bucuresti

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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