Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Hi, I’m Siddahant Kumar, a Full-Stack .NET Developer with 4+ years of experience delivering enterprise payment systems, SaaS platforms, and AI-driven applications across UAE, US, and UK markets. I specialise in C#, .NET 8, ASP.NET Core, and Azure, with a strong track record in microservices and cloud-native development. I’ve helped teams boost transaction success rates, reduce errors, and automate AI pipelines to save significant manual effort. I’m currently working in the UK on a Post-Study Work Visa. I’m passionate about building robust software, collaborating with cross-functional teams, and continually learning new technologies. I hold an MSc in Advanced Computer Science with Distinction from Bangor University and enjoy turning complex problems into scalable, maintainable solutions.…Hi, I’m Siddahant Kumar, a Full-Stack .NET Developer with 4+ years of experience delivering enterprise payment systems, SaaS platforms, and AI-driven applications across UAE, US, and UK markets. I specialise in C#, .NET 8, ASP.NET Core, and Azure, with a strong track record in microservices and cloud-native development. I’ve helped teams boost transaction success rates, reduce errors, and automate AI pipelines to save significant manual effort. I’m currently working in the UK on a Post-Study Work Visa. I’m passionate about building robust software, collaborating with cross-functional teams, and continually learning new technologies. I hold an MSc in Advanced Computer Science with Distinction from Bangor University and enjoy turning complex problems into scalable, maintainable solutions.

Siddahant Kumar

Full Stack Developer, Back-End Developer, Front-End Developer, +2





Hi, I’m Siddahant Kumar, a Full-Stack .NET Developer with 4+ years of experience delivering enterprise payment systems, SaaS platforms, and AI-driven applications across UAE, US, and UK markets. I specialise in C#, .NET 8, ASP.NET Core, and Azure, with a strong track record in microservices and cloud-native development. I’ve helped teams boost transaction success rates, reduce errors, and automate AI pipelines to save significant manual effort. I’m currently working in the UK on a Post-Study Work Visa. I’m passionate about building robust software, collaborating with cross-functional teams, and continually learning new technologies. I hold an MSc in Advanced Computer Science with Distinction from Bangor University and enjoy turning complex problems into scalable, maintainable solutions.…Hi, I’m Siddahant Kumar, a Full-Stack .NET Developer with 4+ years of experience delivering enterprise payment systems, SaaS platforms, and AI-driven applications across UAE, US, and UK markets. I specialise in C#, .NET 8, ASP.NET Core, and Azure, with a strong track record in microservices and cloud-native development. I’ve helped teams boost transaction success rates, reduce errors, and automate AI pipelines to save significant manual effort. I’m currently working in the UK on a Post-Study Work Visa. I’m passionate about building robust software, collaborating with cross-functional teams, and continually learning new technologies. I hold an MSc in Advanced Computer Science with Distinction from Bangor University and enjoy turning complex problems into scalable, maintainable solutions.

Available to hire

Hi, I’m Siddahant Kumar, a Full-Stack .NET Developer with 4+ years of experience delivering enterprise payment systems, SaaS platforms, and AI-driven applications across UAE, US, and UK markets. I specialise in C#, .NET 8, ASP.NET Core, and Azure, with a strong track record in microservices and cloud-native development. I’ve helped teams boost transaction success rates, reduce errors, and automate AI pipelines to save significant manual effort.

I’m currently working in the UK on a Post-Study Work Visa. I’m passionate about building robust software, collaborating with cross-functional teams, and continually learning new technologies. I hold an MSc in Advanced Computer Science with Distinction from Bangor University and enjoy turning complex problems into scalable, maintainable solutions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

Work Experience

Software Engineer II at Asaan AI

November 1, 2024 - Present

Architect SaaS backend for Scholarbot AI using .NET 8 and ASP.NET Core Minimal APIs, implementing microservices with Entity Framework Core, serving 30+ active student users across multiple tenants. Built Power Apps canvases and model-driven apps integrated with .NET Core REST APIs for Mentore.app, reducing configuration time by 40%. Automate enterprise workflows using Microsoft Power Automate and Azure Logic Apps, orchestrating document processing pipelines and notification systems, eliminating 15+ hours of manual processing weekly. Integrated Azure OpenAI Service with .NET Core services for intelligent document processing in Booksquare GPT, processing files through Azure Functions background queues, supporting over 10 daily active users.

Software Engineer at Systems Limited

October 1, 2023 - October 1, 2024

Implemented transaction validation and encryption modules in the SOA-based Etisalat Payment Gateway using C# and Azure Key Vault, reducing processing errors by 40% for Gulf merchants. Improved transaction success rates by 90% by conducting scenario-based testing with VISA, MasterCard, and AMEX test cards and automating regression testing with Azure DevOps pipelines. Integrated EMV 3-D Secure 2.0, Apple Pay, Samsung Pay, and TAP using .NET Core and Angular, increasing payment approval rates by 20% and expanding user adoption by 35%. Enhanced API performance through EF Core query tuning and selective use of Dapper ORM, reducing average response time by 35% across merchant payment endpoints.

Full-Stack .NET Developer at One Technology Services

June 1, 2022 - October 1, 2023

Architected and deployed a multi-tenant SaaS ERP for US Auto Dealers using .NET Core microservices, RabbitMQ with Mass Transit, and Azure B2C authentication, reducing authorization errors by 80% and improving uptime by 50%. Delivered ERP modules (Accounting, Inventory, HR, Invoicing, Smart Reporting) with Angular and SQL Server, streamlining dealer operations and improving data reliability by 30%. Integrated Generative AI APIs to automate invoice creation and predictive analytics using .NET Core, improving billing accuracy and accelerating decision-making by 20%.

Software Engineer at Avanza Solutions

June 1, 2021 - June 1, 2022

Revamped EKPCMS Phase 1 for HBL by developing complaint workflows in C++ and exposing C# web services with WSDLs to Unison CRM via Rendezvous middleware, improving response accuracy by 25%. Delivered VISA PRA Mandate for Sri Lanka by integrating Rendezvous middleware with VISA and RBTS, routing reversals to VisionCard Management System, enabling real-time tracking for 100+ cardholders. Expanded EKPCMS Phase 2 by implementing 16 additional complaint types using SOAP-based XML architecture, synchronizing CRM and EKPCMS channels, improving customer service efficiency by 30%.