I build secure, scalable, and maintainable web systems — primarily in the .NET ecosystem — and help modernize legacy frontends with React.
I focus on pragmatic engineering: small, iterative improvements that compound into more reliable and faster systems.
- 🔧 Backend-first Full Stack: REST APIs, EF, LINQ, SQL Server
- 🧩 Frontend modernization: ASPX/WebForms → React (hooks & component-driven UI)
- 🔐 Security-first: input encoding, CSRF, rate-limiting, vulnerability fixes
- ☁️ Cloud exposure: Azure Functions, Blob Storage, CI/CD pipelines
- 🤖 Automation / Agents: LangGraph, automation for repetitive workflows
- 🧠 Fundamentals: OOP, SOLID, DRY, Design Patterns
📩 Reach me: arorakartik923@gmail.com
- Payment/pos management and integrations for multi-country banking partners
- Secure Authentication & Authorization services (JWT, role-based access)
- Migration paths from server-rendered pages (WebForms/ASPX) to single-page React apps
- Resilient backend systems where data consistency and idempotency matter (billing/payments)
Noida | 05/2024 – Present
- Built and maintained a POS management dashboard used by banking partners in Malaysia.
- Migrated legacy ASPX pages to React and introduced shimmer loading UI for better UX.
- Improved system reliability by resolving critical production issues and tuning performance.
Noida | 07/2021 – 04/2024
- Built a customer portal for the Department of Water, City of Fort Worth (Texas) — billing, consumption insights, and payments.
- Implemented a time-windowed duplicate-payment prevention mechanism.
- Hardened APIs with CSRF protection, input encoding, and throttling; fixed issues found in vulnerability scans.
- Languages & Frameworks: C#, .NET, .NET Core, ASP.NET MVC, WebForms, React.js, JavaScript
- Data & ORM: SQL Server, Entity Framework, LINQ, MongoDB
- APIs & Integration: REST, SOAP/WSDL, Postman, Swagger
- Cloud & DevOps: Azure Functions, Azure Blob Storage, Azure Repos/Git, Jenkins, CI/CD
- Security & Testing: Burp Suite, secure coding practices, vulnerability remediation
An interface to manage POS devices and fleet-wide configurations. Features include bulk updates for merchants and automated settlement report publishing for banks.
A 3-layer CRUD API with JWT authentication and role-based access controls.
Repository: https://github.com/Kartik987/Crud-Authentication-EntityFramework
A lightweight shopping cart built with Bootstrap, JavaScript, and jQuery demonstrating client-side cart logic and dynamic totals.
Repository: https://github.com/Kartik987/Ecommerce
- ✅ M001: MongoDB Basics — Mongo Compass, querying with Mongoose, NoSQL fundamentals
- ✅ Introduction to Big Data — HDFS, MapReduce
- ✅ Big Data Modelling & Management Systems — streaming & system design for online needs
- ✅ Microsoft Certified: Azure Developer Associate (AZ-204) — developing solutions on Azure, Functions, Storage, and secure cloud services
- Small, frequent PRs with clear descriptions and tests when applicable
- Prefer observability: structured logging + metrics to find and fix real issues
- Security first: threat modelling and fixing vulnerabilities as part of the development cycle
- Automated tasks for repetitive work (scripting, agents)
- Collaborations on secure & scalable APIs
- Frontend modernization for legacy enterprise apps
- Payment, billing, and reliability-focused systems
If you have a project or idea — let's talk! ✉️ arorakartik923@gmail.com
- Favorite pattern: Strategy + Factory for extensible business rules
- Coffee: strong ☕ Code & tests: even stronger ✅
- In spare time: exploring agent automation and small infra projects on Azure
If you're building secure APIs, migrating a legacy app to React, or working on payment systems — I'd love to collaborate.
- GitHub: https://github.com/Kartik987
- LinkedIn: https://www.linkedin.com/in/kartik-arora-97ba1a203
- Email: arorakartik923@gmail.com
- Location: Noida, India