# Ben Lopez > Senior Full Stack Engineer @ CarMax | React • .NET • Azure | Customer Experience Platforms Location: Tampa, Florida, United States Profile: https://flows.cv/benlopez At CarMax, the procurement platforms I work on process critical operations. If they go down, it costs $100K/hour. I've built a track record of keeping them running. I spend my days architecting full-stack solutions (React, TypeScript, .NET, Azure), mentoring engineers, and investigating production issues end-to-end when they arise. The work is high-stakes, but that's what makes it fun. Lately, I've been helping my team work smarter by integrating AI tools like GitHub Copilot and Claude Code into our workflow. Teaching the team how to use context engineering and when to trust (or override) AI suggestions has made a real difference in our velocity. Stack: React, TypeScript, .NET, Azure DevOps Sweet spot: Mission-critical features that need to work the first time 7 years in and still energized by hard problems. Let's connect. ## Work Experience ### Senior Software Engineer @ CarMax Jan 2024 – Present | Richmond, Virginia, United States - Built micro-frontend (MFE) solutions using Vite, React, and TypeScript, establishing component patterns, state management standards, and UI consistency across enterprise applications supporting $75M+ business opportunity for delivering vehicle appraisals and increasing sales conversions - Designed and deployed real-time notification systems using SignalR, Azure Service Bus, C# Web APIs, and SQL Server, integrated into React components and delivered via Azure Pipelines—eliminating 30-second sync wait times and improving customer status visibility - Mentored 15+ engineers as a React subject matter expert on modern frontend practices, component architecture, and design patterns through internal upskilling programs. - Shaped frontend engineering culture by delivering company-wide technical talks to 200+ employees on pair programming, mob programming, and AI-assisted development workflows to accelerate team velocity ### Software Engineer II @ CarMax Jan 2022 – Jan 2024 | Richmond, Virginia, United States - Built full-stack vehicle search features integrating Azure Search and Material UI, adding 10 advanced search facets to improve vehicle discovery precision - Improved user satisfaction scores by 33% (60% to 80%) through architecture modernization, performance optimization with profiling tools, and scalable frontend patterns - Established automated testing infrastructure by scaling Playwright adoption from 0% to 50% coverage for critical workflows within 3 months, ensuring quality and reliability - Collaborated cross-functionally with product managers and designers to prototype and ship user-facing features end-to-end for critical appraisal delivery, from early exploration through delivery, while maintaining 24/7 on-call responsibility for production system health ### Software Engineer @ Nextech Systems Jan 2019 – Jan 2022 | Tampa, Florida, United States - Built end-to-end product features for Ambulatory Surgery Centers using Angular components, C# .NET Web APIs, and Microsoft SQL Server data models to streamline clinical data intake and improve system performance - Led R&D for company's drawing tool, architecting migration from WPF to Angular with TypeScript and Fabric.js, creating C# REST APIs with SQL Server backend for backwards compatibility while enabling new feature development - Served as Agile Owner conducting Standup, Refinement, and Retro ceremonies while mentoring new developers in JIRA and Git workflows, fostering cross-team communication and ensuring sprint delivery commitments - Established CI/CD pipeline in Azure DevOps with automated build steps for code quality and unit test standards using Visual Studio, implementing private NPM package for standardized component library across multiple projects ### Associate Application Developer @ ConnectWise Jan 2018 – Jan 2019 | Tampa/St. Petersburg, Florida Area - Delivered critical bug fixes and features across RMM product working in full-stack environment with C# server-side development and React.js for UI modernization - Improved database performance by rewriting SQL views and stored procedures using Common Table Expressions (CTEs) on Microsoft SQL Server for cleaner, more efficient query logic - Contributed to multi-phase application rewrite building new React.js screens aligned with existing interface while maintaining C# backend services ### Intern @ Premium Assignment Corporation Jan 2016 – Jan 2017 | Tampa/St. Petersburg, Florida Area - Developed enhancements to the company’s loan quoting application using C#, MVC, and SQL within Visual Studio, including new data fields and supporting logic. - Performed UI and regression testing to validate functionality and ensure a high-quality user experience across PAC’s website. - Authored a functional specification document for a new PAC application, supporting product requirements and guiding development for the engineering team. ### Enterprise Information Services Intern @ SunTrust Jan 2016 – Jan 2017 | Tampa, Florida - Developed a mock insurance quoting website using HTML, CSS, and JavaScript in Visual Studio to help agents access loan quote information more efficiently. - Contributed to the design and testing of a Xamarin mobile survey application, collaborating with engineering teams in Atlanta and Orlando. - Practiced Agile methodologies, writing user stories and working closely with a Product Owner to support iterative development and timely project delivery. ## Education ### Bachelor’s Degree in Computer Science University of South Florida Jan 2013 – Jan 2017 ## Contact & Social - LinkedIn: https://linkedin.com/in/benlopez1 --- Source: https://flows.cv/benlopez JSON Resume: https://flows.cv/benlopez/resume.json Last updated: 2026-03-22