Senior .Net Developer

Raza Ahmed Khan

Senior .NET Developer Full Stack (ASP.NET Core, Azure, Microservices)

Phone: 959-***-**** Email: **************@*****.*** Linked-In: linkedin.com/in/raza-ahmed-khan-8b967b2a7

Professional Summary:

Full Stack .NET Developer with 6+ years of experience delivering scalable, cloud-native, and AI-integrated web and enterprise applications, with a focus on solving real-world business problems across healthcare, finance, and e-commerce domains.

Designed and implemented microservices-based architecture using .NET 8 and gRPC for a healthcare platform, reducing system downtime by 40% and improving patient data synchronization across departments.

Developed responsive front-end apps using Angular 17, React 18, and Blazor for a multi-tenant e-commerce portal, improving user engagement and mobile conversions by 30%.

Led migration of a monolithic financial app to Azure AKS-based microservices, leveraging Azure DevOps pipelines and Terraform IaC, resulting in a 60% improvement in deployment speed and fault isolation.

Integrated Azure OpenAI API and ML.NET to build a smart document parser for a legal-tech startup, automating contract clause identification and saving 100+ hours/month in manual review.

Implemented CI/CD pipelines using GitHub Actions and Azure DevOps with automated testing, Docker builds, and approval gates for a logistics client—cutting release cycles from 2 weeks to 2 days.

Secured enterprise APIs using OAuth 2.0, Azure AD, and IdentityServer for a state government project, ensuring HIPAA compliance and safe citizen data access.

Optimized queries and refactored stored procedures in SQL Server and PostgreSQL for a FinTech platform, improving report generation time by 70% and enhancing analytics throughput.

Built event-driven services using Kafka and Azure Event Hubs to enable real-time inventory tracking for a national retail chain with 200+ outlets.

Collaborated with low-code teams on Power Apps and Power Automate integrations, accelerating internal HR tool development with minimal engineering overhead.

Mentored 5+ junior developers, enforced coding standards, and led daily Agile standups and sprint planning in a cross-functional team of 10 developers and testers.

Core Skills:

Languages:

C#, .NET Core, ASP.NET Core Web API, JavaScript, TypeScript, SQL, Python

Frameworks:

Entity Framework, Angular, React, Blazor

Cloud Platforms:

Microsoft Azure (App Services, Functions, AKS, Cosmos DB), AWS (Lambda, S3, RDS)

Databases:

SQL Server, PostgreSQL, MongoDB, Redis, Cosmos DB

DevOps:

Azure DevOps Pipelines, GitHub Actions, Jenkins, Terraform, Docker, Kubernetes

Testing:

xUnit, NUnit, Selenium, Postman, SonarQube

Version Control:

Git, GitHub, Bitbucket

Security:

OAuth 2.0, JWT, Azure AD B2C, IdentityServer4, HL7/FHIR Compliance

Methodologies:

Agile/Scrum, Test-Driven Development (TDD), CI/CD Automation

Event-Driven & Messaging:

gRPC, Kafka, Azure Event Hubs, SignalR, Azure Service Bus, Amazon SQS

Professional Experience:

Optum Healthcare (UnitedHealth Group)

Senior .NET Developer Chicago, IL

01/2022 - Present

Migrated batch-processing workflows to Azure Durable Functions, improving execution reliability and cutting processing time of EHR data imports by 45%.

Implemented role-based access control (RBAC) using Azure AD Groups and custom policies, ensuring data access was strictly governed across clinical, operational, and admin user roles.

Optimized performance bottlenecks in .NET APIs and front-end apps using Application Insights and Lighthouse audits, resulting in 50% faster page load times and improved UX scores.

Containerized legacy .NET Framework services and refactored into modern .NET 8 microservices, enabling faster onboarding to AKS with reduced tech debt.

Used Feature Flags with LaunchDarkly and Azure App Configuration, enabling safe rollout of new features in production and reducing rollback risks during clinical pilot phases.

Led daily scrums and sprint retrospectives, mentoring a distributed team of 6 developers across U.S. and India, fostering collaboration and continuous improvement.

Integrated healthcare standards such as HL7 and FHIR into APIs, ensuring interoperability across EMR systems and meeting federal compliance requirements.

Conducted code reviews and implemented CI quality gates using SonarQube, ensuring maintainability, reducing bugs, and aligning with internal SDLC and ISO standards.

Collaborated with product managers and clinicians to translate business requirements into technical specifications, ensuring patient-focused feature development.

Established automated API testing frameworks using Postman and xUnit, achieving 90% code coverage and reducing regression issues by 70%.

Technologies Used: .NET 8, Azure AKS, Azure Functions, Event Grid, OAuth 2.0, Azure AD B2C, Cosmos DB, Redis, Blazor, Angular, Azure OpenAI, ML.NET, Terraform, Azure DevOps, Docker, Application Insights, OpenTelemetry

Webster Bank

Full Stack Developer Cranston, RI

06/2020 - 12/2021

Modernized the bank’s legacy loan origination system into a cloud-native, microservices-based application using .NET 6 and Azure AKS, reducing loan approval time by 40% and improving system uptime.

Built and deployed responsive front-end modules using Angular and Blazor Server, enabling bankers and underwriters to access real-time credit data securely on desktop and tablets.

Implemented role-based dashboards with SignalR for real-time transaction updates, enhancing fraud monitoring and customer service operations.

Designed and secured RESTful APIs using OAuth 2.0 and Azure AD B2C, ensuring compliance with financial data protection regulations and seamless integration with third-party fintech apps.

Used Azure Service Bus and Event Grid to orchestrate asynchronous transaction events, reducing processing bottlenecks and enabling near-instant fund transfer confirmations.

Integrated Cosmos DB and Redis for a hybrid caching and transaction ledger, improving system speed during peak transaction hours and ensuring audit log integrity.

Developed infrastructure as code (IaC) using Terraform and automated deployments via Azure DevOps, reducing manual provisioning time by 60% and enabling consistent, scalable environments.

Enhanced SQL Server performance by refactoring stored procedures and indexing strategies, leading to 35% faster query execution in high-load reporting environments.

Partnered with risk and compliance teams to incorporate AI-driven transaction flagging using Azure OpenAI, helping reduce false-positive alerts and improving fraud detection accuracy.

Followed Agile/Scrum methodology, participated in sprint planning, peer code reviews, and cross-team architecture discussions, aligning development with evolving business needs and regulatory standards.

Technologies Used: .NET 6, Angular, Blazor Server, Azure AKS, SignalR, Azure AD B2C, Azure Service Bus, Cosmos DB, Redis, SQL Server, Terraform, Azure DevOps, OAuth 2.0, Azure OpenAI

IMG (International Medical Group)

.NET Developer Indianapolis, IN

02/2019 - 05/2020

Spearheaded the development of a scalable recommendation engine for an international logistics e-commerce platform using .NET Core 3.1, AWS Lambda, and DynamoDB, increasing customer engagement by 25% through real-time product and route suggestions.

Implemented Elasticsearch and OpenSearch for intelligent, fuzzy product search and shipment tracking, reducing query response time by 40% and significantly boosting user satisfaction.

Refactored a monolithic platform into a containerized microservices architecture using Docker and Amazon EKS, enabling zero-downtime deployments, streamlined updates, and multi-region scaling.

Collaborated with DevOps to create CI/CD pipelines using Jenkins and GitHub Actions, integrating SonarQube and xUnit for code quality checks and automated regression testing—cutting production bugs by 60%.

Migrated relational data to AWS RDS (PostgreSQL) and incorporated read replicas to enhance performance and availability during international operations and high-traffic promotional events.

Built centralized monitoring dashboards using Amazon CloudWatch and Prometheus/Grafana, ensuring 24/7 observability and reducing mean time to recovery (MTTR) by 35%.

Established feature flag strategies with LaunchDarkly, allowing business teams to test marketing campaigns and new features in production without redeployments.

Integrated Redis and Amazon SQS to support real-time order processing and asynchronous workflows, optimizing resource usage and ensuring consistent user experience under peak loads.

Technologies Used: .NET Core 3.1, AWS Lambda, Docker, Kubernetes (EKS), Elasticsearch, OpenSearch, AWS RDS, PostgreSQL, Redis, Amazon SQS, Jenkins, GitHub Actions, SonarQube, LaunchDarkly, CloudWatch, Prometheus, Grafana, API Gateway, DynamoDB

Education:

Masters in Computer & Information Technology - Sacred heart University

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