Senior .NET Developer · Chennai, India

Hi, I'm Ganeshkumar R.
I build enterprise-grade systems on Azure & AWS.

11+ years designing, developing, and deploying microservices for banking, eCommerce, and ERP domains — with deep expertise in .NET Core, C#, cloud-native architecture, and REST/GraphQL APIs.

View my work Contact me
LinkedIn ↗ · GitHub ↗ · rgkjobmail@gmail.com
Portrait of Ganeshkumar R

01 · About

I'm a Senior .NET Developer with over a decade of experience architecting and shipping enterprise-grade applications across banking, eCommerce, and ERP domains. My focus is on cloud-native, microservices-based systems — from domain-driven design and event-driven architecture to production deployments on Azure Kubernetes Service and AWS Lambda. I hold four Microsoft Azure certifications and have led delivery for a UK-regulated banking platform, a high-traffic FMCG eCommerce marketplace, and several ERP and loan-management systems.

  • 11+Years of experience
  • 6Companies · banking to ERP
  • 4Azure certifications

02 · Experience

Where I've worked

Senior Associate Technology — Publicis Sapient

May 2023 – Present

UK Banking Platform — One Savings Bank (OSB Group)

  • Architected scalable microservices in .NET Core using Clean Architecture and DDD for a UK-regulated banking environment.
  • Built data persistence layers with SQL Server and Cosmos DB for high-throughput transactional workloads.
  • Integrated Salesforce CRM, FusionAuth, and Mambu via secure REST APIs, cutting manual processes by ~30%.
  • Implemented GraphQL APIs that reduced over-fetching by up to 40%, and deployed containerized services to AKS with zero-downtime releases.
  • Configured Azure API Management for gateway, rate limiting, auth, and versioning; mentored 3 junior developers.

Senior Software Engineer — Ivy Mobility Solutions

Jul 2020 – Feb 2023

FMCG eCommerce Platform — Ivy Marketplace

  • Built a high-performance FMCG eCommerce platform on .NET Core microservices with PostgreSQL, serving thousands of concurrent users.
  • Integrated PayU for PCI-compliant payments and multiple notification providers for multichannel messaging.
  • Architected event-driven pipelines with AWS SQS/SNS and serverless logic on Lambda; optimized CI/CD, cutting deployment time by ~40%.

Senior Software Engineer — KNila IT Solutions

Jul 2019 – May 2020

POS — Loan Management System

  • Designed a Loan Management System in .NET Core with SQL Server covering origination, processing, and reporting.
  • Streamlined AWS CI/CD, improving release cycles and system uptime.

Software Engineer — BDA Technology Solutions

Jan 2019 – May 2019

Warehouse Management System

  • Built a WMS in .NET Core and SQL Server for inventory, stock movement, and order fulfillment.

Software Developer — Ad-Hash Technolabs

Oct 2016 – Jan 2019

Social Media Aggregation Platform — Synctag

  • Aggregated APIs from Facebook, Twitter, Instagram, YouTube, and more into one platform on .NET Core.
  • Added IBM Watson NLP for sentiment analysis and deployed on Azure App Services with Blob Storage and Functions.

.NET Programmer — Crisp Systems

Sep 2015 – Sep 2016
  • Built ERP modules in VB.NET and a Chit Fund Management System in C#.NET with a 3-tier architecture.

03 · Skills

Technical toolbox

Languages & Frameworks

C#VB.NET.NET Framework.NET Core / .NET 6+ ASP.NET CoreWeb APIEF CoreDapper

Azure

App ServicesFunctionsAKSService Bus API ManagementCosmos DBKey VaultContainer Apps

AWS

LambdaS3SQSSNSCI/CD

Architecture

MicroservicesDDDEvent-DrivenSOLID Clean ArchitectureDependency Injection

Messaging & Data

KafkaRabbitMQAzure Service Bus SQL ServerPostgreSQLCosmos DB

APIs & Tools

RESTGraphQLSwagger/OpenAPIPostman Salesforce CRMTwilioGitAgile/Scrum

04 · Projects

Featured work

eCommerceMVC Core

.NET 10 · EF Core · Multi-DB

A full ASP.NET Core 10 port of a classic MVC5 / Web API 2 / EF6 e-commerce storefront and admin dashboard — storefront, dashboard, and a JSON API for mobile clients, with pluggable SQL Server, MySQL, PostgreSQL, and SQLite support and Docker deployment.

Live demo ↗ Source ↗ Docs ↗

Ivy Marketplace

.NET Core · PostgreSQL · AWS

High-performance FMCG eCommerce platform built on .NET Core microservices serving thousands of concurrent users, with PayU payments, multichannel notifications, and event-driven pipelines on AWS SQS/SNS and Lambda.

Enterprise project — confidential

UK Banking Platform

.NET Core · Cosmos DB · AKS

Regulated banking microservices for OSB Group, integrating Salesforce CRM, FusionAuth, and Mambu core banking, deployed on AKS with GraphQL APIs and Azure Service Bus messaging.

Enterprise project — confidential

05 · Certifications & Education

Credentials

AZ-900 Azure Fundamentals
AZ-204 Azure Developer Associate
AZ-104 Azure Administrator Associate
DP-420 Azure Cosmos DB Developer Specialty

Education

B.Sc. Mathematics — Kalasalingam College of Arts and Science, Krishnankovil, 2011

06 · Contact

Let's work together

Open to senior/lead .NET and cloud architecture roles. The fastest way to reach me is email or LinkedIn.

rgkjobmail@gmail.com Connect on LinkedIn ↗