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Hi, I'm Seray Don, a Lead .NET Engineer with over 10 years of experience working with Fortune 500 companies like Walmart and Microsoft. I've specialized in creating scalable, secure, and efficient eCommerce and financial service platforms, improving profitability and operational efficiency through innovative software solutions. I enjoy leveraging my expertise in .NET frameworks, cloud technologies like Azure and AWS, and front-end frameworks such as Angular and React to build impactful applications. I'm passionate about driving organizational growth and crafting solutions that enhance user experiences and business outcomes.…Hi, I'm Seray Don, a Lead .NET Engineer with over 10 years of experience working with Fortune 500 companies like Walmart and Microsoft. I've specialized in creating scalable, secure, and efficient eCommerce and financial service platforms, improving profitability and operational efficiency through innovative software solutions. I enjoy leveraging my expertise in .NET frameworks, cloud technologies like Azure and AWS, and front-end frameworks such as Angular and React to build impactful applications. I'm passionate about driving organizational growth and crafting solutions that enhance user experiences and business outcomes.

Seray Don

Developer, Web Developer, Programmer, +2

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Hi, I'm Seray Don, a Lead .NET Engineer with over 10 years of experience working with Fortune 500 companies like Walmart and Microsoft. I've specialized in creating scalable, secure, and efficient eCommerce and financial service platforms, improving profitability and operational efficiency through innovative software solutions. I enjoy leveraging my expertise in .NET frameworks, cloud technologies like Azure and AWS, and front-end frameworks such as Angular and React to build impactful applications. I'm passionate about driving organizational growth and crafting solutions that enhance user experiences and business outcomes.…Hi, I'm Seray Don, a Lead .NET Engineer with over 10 years of experience working with Fortune 500 companies like Walmart and Microsoft. I've specialized in creating scalable, secure, and efficient eCommerce and financial service platforms, improving profitability and operational efficiency through innovative software solutions. I enjoy leveraging my expertise in .NET frameworks, cloud technologies like Azure and AWS, and front-end frameworks such as Angular and React to build impactful applications. I'm passionate about driving organizational growth and crafting solutions that enhance user experiences and business outcomes.

Available to hire

Hi, I’m Seray Don, a Lead .NET Engineer with over 10 years of experience working with Fortune 500 companies like Walmart and Microsoft. I’ve specialized in creating scalable, secure, and efficient eCommerce and financial service platforms, improving profitability and operational efficiency through innovative software solutions.

I enjoy leveraging my expertise in .NET frameworks, cloud technologies like Azure and AWS, and front-end frameworks such as Angular and React to build impactful applications. I’m passionate about driving organizational growth and crafting solutions that enhance user experiences and business outcomes.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Lead .NET Engineer at Walmart

October 1, 2022 - Present

Led the development of a secure eCommerce platform using C#, .NET Core 6, and Angular 16, improving transaction throughput by 20% during peak seasons. Achieved a $1.5 million profit increase by refining pricing algorithms and inventory management, which enhanced stock turnover and reduced excess inventory costs. Adopted microservices architecture to decouple monolithic applications, increasing deployment frequency and scalability. Implemented Azure Key Vault for secure payment credential management, improving transaction security. Enhanced data access efficiency with Entity Framework Core and T-SQL, reducing query execution time by 30%. Strengthened security via OAuth 2.0 and SAML for secure API access and single sign-on. Used SignalR and Azure SignalR Service to boost real-time notifications and user engagement. Integrated Azure Data Lake and Power BI for improved data analytics and operational decisions. Championed Test-Driven Development with Cypress for high-quality front-end testi

Senior Backend Engineer at Microsoft

October 1, 2022 - July 17, 2025

Engineered cloud-native applications using .NET 7 and ASP.NET Core 7 with MVC and Web API, integrating with React 18 and Vue.js 3 front-end frameworks. Developed interactive front-end solutions with React and Redux to improve real-time data updates by 30%. Built Blazor components to enable full-stack C# development, reducing development time and improving maintainability. Leveraged Azure Logic Apps, Service Bus, Event Grid, and API Management to optimize system integration and enterprise performance. Integrated AI features using Azure Machine Learning and Cognitive Services to enhance user personalization. Led migration from monolithic to microservices architecture using Docker and Kubernetes, increasing deployment speed by 50% and supporting scalable user demand. Wrote reusable C# components improving modularity and project efficiency by 20%. Managed logging and monitoring with Azure Application Insights, cutting issue resolution time by 35%. Integrated Apache Kafka and RabbitMQ messa

Software Engineer at Boston Consulting Group

July 1, 2020 - July 17, 2025

Architected a responsive web application using HTML5, CSS3, and Bootstrap 4, increasing user engagement by 40%. Built a data integration platform with Node.js and WCF to streamline communication between microservices and legacy systems, reducing data retrieval times by 50%. Optimized database performance on Microsoft SQL Server 2019 using indexing and stored procedures for 30% faster queries. Developed Python machine learning models for predictive client insights, reducing operational costs by 25%. Implemented Git version control best practices for team collaboration. Designed and integrated APIs using JSON and XML for improved system interoperability. Applied Kanban methodology to boost team productivity by 35%. Utilized AWS Lambda and S3 for scalable cloud applications, reducing infrastructure costs by 20%. Created an enterprise desktop application in VB.NET automating critical business processes and improving operational efficiencies.