Rakeshkumar B.
Knack Developer | No-Code App & .NET | AWS Integration
When a business has a complex .NET system nobody else wants to touch, or needs a Knack application built properly from scratch - that's usually when they find me. I've been building software for 18 years. My work sits at the intersection of two things most developers handle separately: low-code platforms like Knack (where I can build and customize fast using Knack API, JavaScript, and CSS), and deep backend .NET work - ASP.NET Core, Web API, Entity Framework, legacy systems that need rescuing, and pipelines that need untangling. I've done this across Healthcare, Real Estate, Oil & Gas, E-Commerce, Media, and ERP/CRM platforms, so chances are I've seen a version of your problem before. On the AWS side, I work regularly with Lambda, API Gateway, SQS, SNS, SES, EventBridge, and DynamoDB - building serverless architectures that scale without drama. I'm also Make certified through Intermediate (Foundation, Basics, and Intermediate complete) and currently working through Make Advanced - bringing the same rigor to no-code/low-code automation, so when a platform like Make hits its limits, I can extend it with the custom code and backend infrastructure it can't provide natively. I also have solid experience with React on the frontend and Node.js for backend services, and I've integrated payment systems (Square), Google Ads API (campaign automation, AdSets, Merchant Center), and a wide range of third-party REST APIs. Where I add the most value: Knack app development, customization, and API integration ASP.NET Core / .NET Framework - new builds and legacy fixes AWS serverless architecture (Lambda, SQS, SNS, SES, API Gateway) Automation platforms (Make - certified through Intermediate, Advanced in progress) extended with custom code and integrations REST API design and third-party API integrations C# backend systems, Entity Framework, SQL optimization Desktop application development Reverse engineering and hard debugging problems others have given up on I don't disappear mid-project. I ask the right questions upfront, keep communication clear throughout, and deliver on time - every time. My 100% Job Success Score across 18 years isn't an accident; it's how I work. If you have something genuinely difficult to build or fix, let's talk.
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $14k
Billed in all: $303,848$304k
$4.8k in the last 6 months
Across 49 contracts
Earnings, last 30 days
Skill rankings: Top 4% in jQuery
Ranked by MRR among everyone on Upwork with the skill.
- Knack18 freelancers · 🇮🇳 #2Top 17%🇮🇳#2 of 5
- #15DevExpress181 freelancers · 🇮🇳 #5Top 8%🇮🇳#5 of 72
- #50Reverse Engineering721 freelancers · 🇮🇳 #3Top 7%🇮🇳#3 of 62
- #99ASP.NET Web API1,447 freelancers · 🇮🇳 #37Top 7%🇮🇳#37 of 534
- #192ASP.NET MVC2,619 freelancers · 🇮🇳 #91Top 7%🇮🇳#91 of 1,109
- #198AWS Lambda2,947 freelancers · 🇮🇳 #42Top 7%🇮🇳#42 of 870
- #209ASP.NET2,819 freelancers · 🇮🇳 #76Top 7%🇮🇳#76 of 1,066
- #231Microsoft SQL Server2,759 freelancers · 🇮🇳 #71Top 8%🇮🇳#71 of 762