Software Engineer C#

Jason Senior C#/.NET Allen Engineer with *+ Years of Experience

************@*****.*** https://www.linkedin.com/in/jsnallen/

305-***-**** Garland, TX 75040

Summary

Accomplished Senior Full Stack Engineer with 9+ years of experience building scalable and high-performance C#/.NET-based web applications across multiple industries, including healthcare, aerospace, energy, and insurance. Extensive expertise in .NET Core, ASP.NET, C#, Blazor, and Azure Cloud, with hands-on proficiency in React, Angular, JavaScript, and TypeScript for frontend development. Adept at designing and implementing microservices architectures, API integrations, and cloud-native solutions. Strong leadership in cross- functional teams, delivering secure, efficient, and innovative solutions that align with business goals. Work Experience

Senior Software Engineer

Optum February 2022 - Present

• Developed and optimized a high-performance claims management system to process millions of healthcare claims, leveraging .NET Core, C#, and SQL Server for backend processing.

• Designed and implemented microservices-based architecture to improve scalability and maintainability, utilizing Azure Service Bus and RabbitMQ for asynchronous messaging.

• Built an intuitive claims search platform using React, TypeScript, and Redux, improving claims retrieval speed by 40% and enhancing user productivity.

• Integrated FHIR and HL7 healthcare APIs into internal systems to streamline insurance verification and patient data interoperability.

• Led a cross-functional team to refactor legacy .NET Framework applications into modern ASP.NET Core Web APIs, reducing technical debt and improving system performance.

• Developed Azure Functions for automating claims processing workflows, reducing manual interventions by 60%.

• Implemented Role-Based Access Control (RBAC) and OAuth 2.0 authentication via Azure AD B2C, ensuring compliance with HIPAA security standards.

• Conducted unit and integration testing using MSTest, xUnit, and Moq, improving system reliability and reducing production defects by 30%.

Software Engineer

Nextbite June 2021 – January 2022

• Developed a real-time order management system for virtual restaurant brands using .NET Core, C#, and PostgreSQL, ensuring seamless integration with third-party food delivery platforms (UberEats, DoorDash, Grubhub).

• Implemented Blazor Server Components for an internal admin dashboard, improving restaurant inventory tracking and order analytics.

• Designed RESTful APIs using ASP.NET Core and documented them with Swagger/OpenAPI, enabling seamless integration with partner applications.

• Integrated Kafka-based event-driven architecture for processing high-volume order transactions with improved fault tolerance.

• Built a React and Next.js frontend for the customer self-service portal, allowing restaurant partners to customize menus, pricing, and promotions dynamically.

• Developed Azure Logic Apps for automating customer feedback collection and order dispute resolution, reducing human intervention by 50%.

• Optimized database indexing and SQL queries, reducing order retrieval time by 35%.

• Implemented JWT-based authentication and OAuth 2.0 for securing restaurant partner APIs. Software Engineer

Memorial Sloan Kettering Cancer Center July 2020 – June 2021

• Led the development of a secure patient portal using ASP.NET Core, Blazor, and SignalR, allowing patients to schedule appointments, access medical records, and communicate securely with healthcare providers.

• Designed and implemented HL7-based integrations for seamless EHR data exchange, improving interoperability between internal and external healthcare systems.

• Developed microservices using .NET Core and Docker, improving system modularity and deployment efficiency.

• Created a React and Redux-based web application for clinicians to visualize patient treatment progress and analytics.

• Implemented GraphQL APIs to optimize data fetching, reducing patient dashboard load times by 40%.

• Integrated Azure Cognitive Services for automated medical transcription and sentiment analysis in patient feedback.

• Developed unit tests and end-to-end tests using xUnit, Selenium, and Cypress, improving software reliability.

• Conducted peer code reviews and mentored junior developers on C# best practices and SOLID principles.

Software Engineer

Collins Aerospace July 2019 – June 2020

• Developed an aircraft maintenance tracking system using ASP.NET Core, C#, and Angular, reducing maintenance downtime by 25%.

• Implemented real-time data synchronization using SignalR, allowing engineers to monitor aircraft diagnostics remotely.

• Designed secure role-based authentication using Azure AD B2C for controlling access to sensitive aviation data.

• Built a RESTful API layer in ASP.NET Core for integrating with IoT sensors embedded in aircraft components.

• Developed automated reporting tools using Blazor and .NET Core, providing real-time insights into aircraft performance.

Software Engineer (Consultant)

Con Edison August 2016 – June 2019

• Developed a grid monitoring and analytics system using ASP.NET Core, C#, and PostgreSQL, enabling real-time tracking of power distribution.

• Built a Blazor-based admin dashboard for monitoring power outages and restoration efforts.

• Implemented Kafka-based event-driven architecture for processing real-time sensor data from power substations.

• Integrated GIS mapping APIs for visualizing power network infrastructure.

• Developed automated workflow systems using Azure Logic Apps, streamlining compliance reporting to regulatory agencies.

• Built automated testing pipelines using Selenium, MSTest, and NUnit to ensure high reliability.

• Involved in knowledge-sharing sessions on C# and .NET Core best practices. Education

The City College of New York Bachelor of Engineering - Electrical Engineering (2012 – 2016) Skills

• Frontend: React, Angular, Next.js, Blazor, Razor Pages, TypeScript, JavaScript, Tailwind CSS, Bootstrap

• Backend: .NET Core, ASP.NET Core, C#, Java, Spring Boot, RESTful APIs, GraphQL, OAuth 2.0, JWT

• Messaging & Event-Driven Systems: RabbitMQ, Kafka, SignalR, Azure Service Bus

• Databases: SQL Server, PostgreSQL, MySQL, MongoDB

• Cloud & DevOps: Azure, AWS, GCP, Docker, Kubernetes, Azure Functions, CI/CD (Azure DevOps, GitHub Actions)

• Testing: MSTest, NUnit, xUnit, Cypress, Selenium, Jest

• Version Control & Tools: Git, GitHub, GitLab, Jira, Agile (Scrum/Kanban)

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