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Cole Yonkee

@coleyonkee

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Senior software engineer delivering scalable .NET, microservices, and AI-enabled full-stack apps.

United States

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What I'm looking for

I’m looking for a team where I can build scalable .NET + React systems on Azure, modernize microservices, and ship AI-enabled features (RAG, vector/semantic search) with strong engineering practices, observability, and clean architecture.

I’m a Senior Software Engineer with 9+ years of experience building scalable enterprise applications with .NET backend technologies and modern frontend frameworks like React, Angular, and TypeScript. I focus on end-to-end delivery—designing, implementing, and operating solutions across the full stack.

Across startups, consulting firms, and Fortune 500 environments, I’ve specialized in distributed systems, clean architecture, and performance optimization. In my roles, I’ve built RESTful APIs, microservices, and cloud-native applications that support enterprise-scale platforms and internal tooling.

My recent work blends software engineering with applied AI—using Azure OpenAI and Retrieval-Augmented Generation (RAG) pipelines, along with vector and semantic search. I’ve implemented AI-powered features by designing the surrounding data and service architecture so models deliver real, searchable outcomes.

I also bring strong cloud and delivery expertise, including Microsoft Azure (AKS, App Services, Functions, Service Bus), Docker/Kubernetes, Terraform, and CI/CD with GitHub Actions and Azure DevOps. From observability with OpenTelemetry and Grafana to production-ready deployments, I aim to ship dependable systems that are easy to maintain and scale.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Nexora Systems

Sep 2024 - Present (1 year 9 months)

Developed full-stack enterprise SaaS features using .NET 8 Minimal APIs with React/Next.js. Implemented AI-powered RAG capabilities on Azure and built cloud-native infrastructure with Docker, Kubernetes, and Terraform.

C#.NET 8+Minimal APIs React Next.js Azure OpenAI Azure AI Search Docker Kubernetes

Senior Software Engineer

Microsoft

Jan 2023 - Aug 2024 (1 year 7 months)

Built enterprise full-stack applications using .NET 6/7 and React with TypeScript. Designed Azure microservices and improved observability with OpenTelemetry, including AI-enabled integrations with Azure OpenAI.

C#ASP.NET Core React TypeScript Microservices REST APIs OpenTelemetry

Senior Software Engineer

Capital One

Dec 2019 - Dec 2022 (3 years)

Designed and developed ASP.NET Core microservices for financial and banking platforms. Built React dashboards, implemented event-driven systems with Kafka and Azure Service Bus, and improved performance with Redis caching and optimized APIs.

ASP.NET Core Microservices React Kafka Azure Service Bus Redis Event Driven Architecture Performance Optimization

Full Stack .NET Engineer

BlueRiver Technologies

Dec 2018 - Nov 2019 (11 months)

Built RESTful APIs with ASP.NET Core for SaaS enterprise applications. Developed Angular/React UI components with TypeScript, implemented JWT authentication with role-based access control, and supported Azure DevOps CI/CD deployments.

ASP.NET Core C#REST APIs Angular React TypeScript JWT SQL Server Azure DevOps

Full Stack .NET Developer

InfoCrest Solutions

Dec 2017 - Nov 2018 (11 months)

Developed enterprise web applications using ASP.NET MVC, C#, Razor views, and JavaScript/jQuery. Integrated frontend modules with backend APIs and enhanced server-side functionality with SQL Server stored procedures for production support.

ASP.NET MVC C#JavaScript JQuery HTML5 CSS3 Bootstrap SQL Server AJAX