I’m Sudhir Kumar, a senior full-stack .NET developer with 8+ years of experience building high-availability web and desktop solutions for retail, logistics, and SaaS customers across the US, Canada, and the Caribbean. I’ve helped teams ship production systems using ASP.NET Core (including Minimal APIs), Angular, and SQL Server, with a strong focus on reliability, security, and performance. I enjoy designing end-to-end features—from REST/SOAP integration and database optimization to modern UI workflows—while also bringing AI capabilities into real products using APIs like OpenAI GPT-4 and Claude. Some highlights include delivering a cargo logistics platform that’s run with zero downtime for 7+ years and implementing WPF-based POS systems for multi-store grocery operations.…

Sudhir Kumar

I’m Sudhir Kumar, a senior full-stack .NET developer with 8+ years of experience building high-availability web and desktop solutions for retail, logistics, and SaaS customers across the US, Canada, and the Caribbean. I’ve helped teams ship production systems using ASP.NET Core (including Minimal APIs), Angular, and SQL Server, with a strong focus on reliability, security, and performance. I enjoy designing end-to-end features—from REST/SOAP integration and database optimization to modern UI workflows—while also bringing AI capabilities into real products using APIs like OpenAI GPT-4 and Claude. Some highlights include delivering a cargo logistics platform that’s run with zero downtime for 7+ years and implementing WPF-based POS systems for multi-store grocery operations.…

Available to hire

I’m Sudhir Kumar, a senior full-stack .NET developer with 8+ years of experience building high-availability web and desktop solutions for retail, logistics, and SaaS customers across the US, Canada, and the Caribbean. I’ve helped teams ship production systems using ASP.NET Core (including Minimal APIs), Angular, and SQL Server, with a strong focus on reliability, security, and performance.

I enjoy designing end-to-end features—from REST/SOAP integration and database optimization to modern UI workflows—while also bringing AI capabilities into real products using APIs like OpenAI GPT-4 and Claude. Some highlights include delivering a cargo logistics platform that’s run with zero downtime for 7+ years and implementing WPF-based POS systems for multi-store grocery operations.

See more

Skills

Experience Level

.NET
Expert
ASP.NET
Expert
C#
Expert
SQL
Expert
API
Expert
POS
Expert
Azure
Expert
JavaScript
Expert
Bootstrap
Expert
HTML5
Expert
AI Chatbot
Expert
Prompt Engineering
Expert
jQuery
Expert
GPT
Expert
GitHub
Expert
Claude
Expert
AngularJS
Expert
JIRA
Intermediate
Stripe
Intermediate
Xamarin
Intermediate
See more

Work Experience

Senior Full-Stack .NET Developer at Creatick Solutions
January 1, 2018 - Present
Developed full-stack web applications using ASP.NET Core, MVC, and Web API with Angular 6+ front-end. Designed and optimized SQL Server database objects — stored procedures, functions, triggers, and views — for high-performance reporting (SSRS / Stimulsoft). Integrated third-party APIs including QuickBooks API, Autotask API, and GunBroker API for seamless business workflows. Built RESTful and SOAP-based APIs and consumed external web services for cross-platform data exchange. Created responsive UIs using HTML5, CSS3, Bootstrap, JavaScript, jQuery, AJAX, Telerik Controls, and Kendo UI. Implemented background job scheduling via Hangfire and caching strategies to improve application performance. Managed source control and workflows using Git, GitHub, Bitbucket, TFS, and SVN; tracked issues via Atlassian JIRA. Delivered Excel add-in development (JavaScript) and documented APIs via Swagger and Postman. Extended solutions across platforms with Xamarin mobile apps and Mac desktop applicat

Education

Master of Computer Applications (MCA) at Chandigarh University
January 1, 2015 - January 1, 2017
Bachelor of Computer Applications (BCA) at HPU Shimla
January 1, 2011 - January 1, 2014
12th Standard (XII) at HPSEB Dharamshala
January 11, 2030 - January 1, 2011
10th Standard (X) at HPSEB Dharamshala
January 11, 2030 - January 1, 2009
MCA at Chandigarh University
January 1, 2015 - January 1, 2017
BCA at HPU Shimla
January 1, 2011 - January 1, 2014

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Professional Services, Retail, Transportation & Logistics
    Built full-stack logistics platform for Dennis Shipping — 7 years of live ASP.NET Core development

    Built a full cargo logistics platform handling shipment tracking, pickup scheduling, customs docs, and multi-office agent portals across New York, Florida, Jamaica & Barbados.
    Result: 7+ years live in production, zero downtime architecture.
    Stack: ASP.NET Core, C#, SQL Server, Entity Framework, Azure

    Dennis Shipping

    Designed, built and maintained a full cargo logistics web application operating across New York, Florida, Jamaica & Barbados. Features: shipment tracking, pickup scheduling, payment processing, customs docs, and a multi-office agent portal. Stack: ASP.NET Core · C# · SQL Server · Entity Framework · Azure.