You will get a robust custom web application / website development
Project details
Expert Software Development Services | Full-Stack Developer with 20+ Years of Experience
Looking for a seasoned full-stack developer to bring your software projects to life? With over 20 years of experience and a 100% job success score on Upwork, I offer top-rated plus software development services tailored to your needs.
Services Offered:
• Custom Software Development: ASP.NET MVC/Core, C#, React, TypeScript, JavaScript.
• API Development & Integration: RESTful API, Web API.
• Cloud Solutions: Azure, CI/CD, DevOps.
• Front-End Development: HTML5, CSS3, JavaScript frameworks.
Why Choose Me?
• Proven Track Record: Top-rated plus badge, 100% job success score.
• Technical Expertise: Mastery of ASP.NET, React, TypeScript, JavaScript, Objective-C, Swift.
• Leadership & Collaboration: Leading diverse teams, and collaborating with stakeholders.
• Commitment to Quality: Best practices, architectural integrity, continuous improvement.
Get in Touch:
Ready to elevate your software projects? Contact me today for a consultation!
Looking for a seasoned full-stack developer to bring your software projects to life? With over 20 years of experience and a 100% job success score on Upwork, I offer top-rated plus software development services tailored to your needs.
Services Offered:
• Custom Software Development: ASP.NET MVC/Core, C#, React, TypeScript, JavaScript.
• API Development & Integration: RESTful API, Web API.
• Cloud Solutions: Azure, CI/CD, DevOps.
• Front-End Development: HTML5, CSS3, JavaScript frameworks.
Why Choose Me?
• Proven Track Record: Top-rated plus badge, 100% job success score.
• Technical Expertise: Mastery of ASP.NET, React, TypeScript, JavaScript, Objective-C, Swift.
• Leadership & Collaboration: Leading diverse teams, and collaborating with stakeholders.
• Commitment to Quality: Best practices, architectural integrity, continuous improvement.
Get in Touch:
Ready to elevate your software projects? Contact me today for a consultation!
Programming Languages
PHP, ASP.NET, C#Coding Expertise
Performance Optimization, Security, W3C Markup Validation ServiceWhat's included
| Service Tiers |
Starter
$250
|
Standard
$500
|
Advanced
$1,000
|
|---|---|---|---|
| Delivery Time | 5 days | 10 days | 15 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 5 | 8 | 10 |
Design Customization | |||
Content Upload | |||
Responsive Design | - | ||
Source Code | - | - |
Optional add-ons
You can add these on the next page.
Additional Revision
+$100
Responsive Design
(+ 5 Days)
+$250Frequently asked questions
6 reviews
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DF
David F.
Jul 25, 2023
FAST turnaround Gravity Forms Customization
JT
James T.
May 15, 2023
Global Directory - Build out flagship product!
The team is always very supportive and does very high quality work. I would recommend Tanmay and his team to anyone running a business that is looking for a partner.
JT
James T.
May 22, 2022
New - Product Development - Build out flagship product!
Tanmay and his team continue to be a critical component to the success our company is having. Our use of AzureDevops has really streamlined our partnership. We are able to accomplish so much that we simply wouldn’t have been able to do over email. Tanmay and his team are very responsive and we get our tasks done well within our agreed SLA’s for our customers. We will continue to work with Tanmay and his team as long as they will work with us!
JT
James T.
Feb 27, 2022
Product Development - Build out flagship product!
Timely responses, top quality work, attention to detail, multiple systems support (Quickbooks, Azure, SalesForce, Stripe, etc). I highly recommend Tanmay and his team for your product needs.
PN
Programmer N.
Nov 5, 2019
AngularJS, JavaScript, D3.js, ASP.NET MVC, JQuery, SQL developer needed to help with project issues
Excellent work - thank you. Highly recommend.
About Tanmaykumar
Senior Full-Stack Developer | .NET & React | SaaS Architect | AI/LLM
100%
Job Success
Ahmedabad., India - 4:45 am local time
I help startups and enterprises design, build, and scale production-grade SaaS platforms using .NET Core (C#) and React/Next.js, and I integrate AI and LLM capabilities (OpenAI, Claude, RAG pipelines, AI chatbots, and workflow automation) directly into existing products. If you need a senior developer who can own architecture end-to-end — not just ship features — you're in the right place.
What I bring as a Lead Full-Stack Developer:
🔹 Backend: ASP.NET Core, C#, Web API, Entity Framework, microservices architecture, RESTful & GraphQL APIs
🔹 Frontend: React.js, Next.js, TypeScript, Redux, responsive UI/UX, component-driven design
🔹 Cloud & DevOps: Azure, AWS, Docker, Kubernetes, CI/CD pipelines, serverless architecture
🔹 Databases: SQL Server, PostgreSQL, MongoDB, Redis
🔹 AI & Emerging Tech: OpenAI API / GPT integration, Claude API integration, LLM-powered features, RAG (Retrieval-Augmented Generation), AI chatbot development, AI workflow automation, prompt engineering, vector databases, agentic AI workflows
🔹 SaaS Specialties: Multi-tenant architecture, subscription billing (Stripe), third-party API integrations, scalable system design, technical leadership for distributed teams
Why clients choose me:
✅ 100% Job Success Score — every project delivered on spec and on time
✅ $60,000+ earned building SaaS products and enterprise integrations for global clients
✅ 1800+ hours of work delivered with a consistent 100% Job Success Score
✅ I lead — not just code. I audit requirements, flag risks early, and communicate proactively so there are no surprises mid-sprint
✅ Comfortable owning a project solo or leading a distributed dev team
Whether you need to modernize a legacy .NET system, build a new SaaS product from scratch, or bolt AI capabilities onto your existing platform, I bring both the engineering depth and the product thinking to get it right the first time.
📩 Message me with your project details — I typically respond within a few hours and can jump on a call to scope things out.
Steps for completing your project
After purchasing the project, send requirements so Tanmaykumar can start the project.
Delivery time starts when Tanmaykumar receives requirements from you.
Tanmaykumar works on your project following the steps below.
Revisions may occur after the delivery date.
Define a Product Backlog
In this step, I discuss the requirements with the Product Owner or the key stakeholders of the business entities and define a list of the product backlog.
Define Release Backlog
In this step, I closely work with the Product Owner based on the ROI plan of the stakeholders of the product and define a release backlog.