Open to Work

Hello, I'm

Sufal Sikder

Hyderabad, India

Senior Software Engineer at Optum (UnitedHealth Group) · IIT Patna M.Tech · Specializing in C#/.NET, Azure, and Generative AI

AI / ML Engineer GenAI Developer Senior .NET Engineer
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Who I Am

About Me

Sufal Sikder — Senior Software Engineer at Optum, IIT Patna M.Tech graduate, based in Hyderabad India

I'm a Senior Software Engineer at Optum (UnitedHealth Group) with 3.5+ years of experience building mission-critical enterprise systems in the U.S. healthcare domain. My work spans claims processing, EDI integrations (270/271, 834, 837), and modernizing legacy .NET infrastructure to cloud-native Azure architectures.

I hold an M.Tech in Mathematics & Computing from IIT Patna (CGPA 8.84), where I researched Deep Learning and Graph Neural Networks — specifically T-GCN models for blockchain transaction forecasting. This research foundation fuels my current drive toward Generative AI and Data Engineering.

I'm actively seeking opportunities as a Senior .NET, AI/ML Engineer where I can bridge enterprise backend expertise with cutting-edge AI applications.

3.5+ Years Experience
IIT Patna M.Tech
8.84 M.Tech CGPA
US Healthcare Domain
What I Know

Technical Skills

Languages

  • C#
  • Python
  • SQL
  • JavaScript
  • C / C++

Backend & Cloud

  • ASP.NET Core Web API
  • .NET 8
  • REST APIs
  • Windows Services
  • Microsoft Azure
  • Azure DevOps
  • CI/CD Pipelines

Integration & Messaging

  • BizTalk Server
  • NServiceBus
  • Azure Service Bus
  • MSMQ
  • EDI 270/271
  • EDI 834 / 837
  • OIDC / SSO
  • Azure Entra ID

AI/ML & GenAI

  • Deep Learning
  • LSTM / GRU
  • Graph Neural Networks
  • T-GCN
  • Time-Series Forecasting
  • GitHub Copilot
  • Google Vertex AI
  • Prompt Engineering
  • RAG

Data & Analytics

  • SQL Server
  • T-SQL
  • Stored Procedures
  • Performance Tuning
  • NumPy
  • pandas
  • matplotlib
Where I've Worked

Experience

Senior Software Engineer

Optum · UnitedHealth Group

–

  • BizTalk integrations for U.S. healthcare EDI transactions (270/271, 834, 837) supporting millions of healthcare members
  • Led NServiceBus modernization: migrating message queues from legacy MSMQ → Azure Service Bus
  • Implemented Azure Entra ID SSO using OIDC protocol for enterprise authentication across applications
  • Driving .NET Framework 4.8 → .NET 8 platform modernization for improved performance and long-term support
  • Leveraging GitHub Copilot to accelerate development productivity and code review quality
BizTalk Server NServiceBus Azure Service Bus .NET 8 Azure Entra ID OIDC GitHub Copilot

Software Engineer

Optum · UnitedHealth Group

–

  • Built Dual Health Plan Identification System (.NET + SQL Server) enabling accurate member enrollment tracking across health plans
  • Developed Aging Claims Reporting Automation (Python + .NET) reducing manual reporting effort by 95%
  • Engineered backend for Women's Health prenatal care tracking — processing sensitive patient data at enterprise scale
  • Built Healthcare File Loader Tool for large batch workloads with optimized T-SQL stored procedures and performance tuning
C# / .NET SQL Server Python ASP.NET Core T-SQL Healthcare EDI
What I've Built

Projects

RashiSutra.com

AI-powered Vedic astrology web application featuring automated birth chart reading, an intelligent chatbot powered by Google Cloud Vertex API, and RAG-style Q&A for personalized astrological insights.

  • Google Vertex AI
  • RAG
  • Python
  • LLM
  • Prompt Engineering
  • Chatbot
Live Demo

T-GCN for Blockchain Forecasting

M.Tech thesis at IIT Patna. Implemented a Temporal Graph Convolutional Network (T-GCN) combining GCN + GRU architectures to forecast transactional amounts in blockchain networks. Evaluated with MAE, RMSE, and MAPE metrics against baseline models.

  • T-GCN
  • Graph Neural Networks
  • GCN + GRU
  • PyTorch
  • Time-Series
  • Blockchain

Secure Smart Contracts (Vyper)

Comparative implementation and security analysis of smart contracts in Vyper versus Solidity. Analyzed security trade-offs, gas efficiency, common vulnerability surfaces, and best practices across both smart contract languages.

  • Vyper
  • Solidity
  • Ethereum
  • Smart Contracts
  • Web3 Security

Complaint Management System

Enterprise complaint management platform built during ONGC internship. Full-featured system with admin and user role separation, complaint lifecycle tracking, assignment workflows, priority queuing, and reporting dashboards.

  • Full Stack
  • Role-Based Access
  • Admin Dashboard
  • Workflow Engine
  • ONGC
Academic Background

Education

M.Tech — Mathematics & Computing

Indian Institute of Technology Patna

–

CGPA 8.84 / 10

Thesis

Deep Learning for Forecasting Transactional Amount in Blockchain Network using T-GCN (Temporal Graph Convolutional Network: GCN + GRU)

  • Graph Neural Networks & Deep Learning research
  • Time-Series Forecasting methodologies
  • Blockchain data analysis

B.Tech — Computer Science & Engineering

Govt. College of Engineering & Ceramic Technology, Kolkata

–

CGPA 8.81 / 10
  • Core Computer Science fundamentals
  • Data Structures & Algorithms
  • Software Engineering principles
  • ONGC industrial internship

Certifications

AI Dojo — Generative AI Foundations

Optum · UnitedHealth Group

Let's Connect

Get In Touch

Actively looking for AI / ML Engineer, GenAI Developer, and Senior .NET Engineer roles. 3.5+ years of enterprise experience · IIT Patna M.Tech · Hyderabad (open to remote & relocation). My inbox is always open — let's talk.

Targeting roles:

AI / ML Engineer Generative AI Engineer Senior .NET / C# Engineer SDE-2 Backend Engineer (Python / C#)
sikdersufal3@gmail.com LinkedIn GitHub

+91 9804631098