Stack Developer .Net

Haoyu Liu

Full Stack Developer .NET Developer

571-***-**** ************@*****.*** Ashburn, VA (Open to Relocation) PROFILE

Full Stack Developer with 4+ years of experience specializing in .NET, cloud computing, and scalable web applications. Specializes in performance tuning, security hardening, and workflow automation. Designed an ASP.NET Core lending system, processing 20,000+ loan applications annually, improving efficiency for business operations. Reconstructed frontend architecture with React.js, enhancing load speed by 40%, ensuring smooth navigation and responsiveness. Automated deployment pipelines in Azure DevOps, cutting release time by 50% and improving system reliability.

WORK EXPERIENCE

Full Stack Developer Virginia, USA

Navy Federal Credit Union Jan 2025 – Present

● Engineered a scalable Education Lending Application using ASP.NET Core Web APIs, optimizing loan processing for 20,000+ applications annually and enabling seamless CRM integration for 50+ Business Development Officers.

● Implemented JWT authentication with a React.js frontend using hooks, Context API, and modular components, strengthening security measures and cutting unauthorized access risks by 60%.

● Deployed the application on Azure Kubernetes Service (AKS) with Docker, decreasing system downtime by 35% and enhancing monitoring with Azure Application Insights.

● Optimized SQL Server stored procedures and triggers, accelerating loan approval workflows by 30% and ensuring data integrity across 500,000+ transactions per month Full Stack Developer New York, USA

JP Morgan Chase Jan 2024 – Dec 2024

● Spearheaded the development of a Client Loyalty and Engagement Module using C#/.NET Core, SQL Server, and Entity Framework Core, boosting client retention by 11%.

● Architected microservices infrastructure with Docker and Azure Kubernetes Service (AKS), enhancing scalability by 60% during peak loads.

● Architected lightweight UI components with React and Redux, reducing page load times by 20% and increasing user engagement.

● Executed Test-Driven Development (TDD) with MSTest and Moq, achieving 85% test coverage and reducing production bugs by 40%.

Full Stack .NET Developer Maryland, USA

Viavi Solutions Jan 2023 – Aug 2023

● Enhanced Device Management & Performance Monitoring Modules, processing 100,000+ user-uploaded test results daily and improving data handling capacity by 25%.

● Refined SQL-based backend systems managing 500GB+ data, cutting retrieval time by 30% and improving database efficiency.

● Established an Azure DevOps CI/CD pipeline, reducing deployment times by 30% and minimizing manual release errors.

Full Stack Developer Walmart, USA

Walmart Jan 2020 – Jul 2021

● Enhanced HR solutions using Angular and ASP.NET, implementing JWT authentication and RBAC, improving scheduling accuracy and reducing unauthorized access by 40%.

● Restructured SQL Server databases for 10,000+ users and implemented Azure Cloud solutions, automating workforce data processing and improving retrieval speeds by 30%. PROJECTS & OUTSIDE EXPERIENCE

StockCogni – Stock Screener App C#, ASP.NET, React, Kafka Jul 2024 – Present

● Pioneered a .NET & Kafka-based stock screener, processing 100,000+ updates/sec for real-time analytics.

● Innovated a React Progressive Web App (PWA) with client-side caching, boosting load speed by 60% for a faster interface.

● Overhauled data retrieval workflows using Azure Redis Cache, reducing database queries by 40% and improving financial data access speed.

SKILLS & INTEREST

Programming Languages: C#, SQL, XML, JavaScript, TypeScript, Python, Java Frontend Technologies: HTML5, CSS3, JavaScript (ES6+), React.js, Angular, Bootstrap, AJAX, jQuery

.NET & Backend: ASP.NET, ASP.NET Core Web API, ASP.NET MVC, Blazor, .NET Framework, .NET Core, Entity Framework, Dapper, ADO.NET, LINQ

Backend Technologies: .NET, .NET Core, Node.js, Flask, RESTful API, SOAP API, RabbitMQ, Kafka, Confluence Databases: SQL Server, MongoDB, PostgreSQL, Oracle Cloud Services: Azure, AWS

Operating Systems: Windows Server, Linux

Design Patterns & Architectures: MVC, MVVM, Singleton, Factory, Repository, Service-Oriented Architecture

(SOA), Event-Driven Architecture

DevOps & Tools: Visual Studio, JetBrains Rider, Docker, Kubernetes, Jenkins, Azure DevOps, Google Analytics, Git, GitHub, GitLab, API Gateway, MSTest, Moq, Playwright, Postman Project Management & Methodologies: Scrum, Agile Software Development, Requirements Gathering, IT Capacity & Cost Planning, IT Vendor Evaluation & Assessment, TOGAF Enterprise Architecture EDUCATION

Rochester Institute of Technology Rochester, NY

M.S. in Computer Science Aug 2021 – May 2024

Tongji University Shanghai, China

B.Eng. in Automation Engineering Sep 2017 – Jul 2021

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