Senior Full-Stack Engineer - C#/.NET & React Expert
Resume:
Carlos Alvarez
️ ***************@*****.***
https://www.linkedin.com/in/carlos-alvarez-871ab5404
Jalisco, Mexico
SUMMARY
Senior Full-Stack Engineer with 10+ years of experience building high-performance C#, .NET Core, ASP.NET Web API, React, and React Native applications. Expert in integrating Microsoft 365, SharePoint, Graph API, and Azure services to deliver secure, scalable, and modular full-stack solutions. Proven track record in designing cross-platform architectures, optimizing performance, and leading teams to consistently deliver maintainable, enterprise-grade software. Adept at bridging frontend and backend systems, implementing React
+ .NET workflows, and translating complex technical challenges into elegant, user-focused solutions. SKILLS
C#, .NET Core, ASP.NET Web API, React, React Native, Next.js, TypeScript, JavaScript (ES6+), Redux Toolkit, Zustand, Hooks, TailwindCSS, Material UI, Responsive Design, Mobile-First Development, Cross-Platform Components, Frontend Optimization, Server-Side Rendering
(SSR), Static Site Generation (SSG), UI/UX Best Practices, Node.js, REST APIs, GraphQL, Middleware Design, Microservices, Distributed Systems, Event-Driven Architecture, OAuth2, JWT, SSO, Active Directory, Authentication & Authorization Flows, API Contracts, SharePoint Integration, Microsoft Graph API, Azure, Docker, Containers, CI/CD Pipelines, GitHub Actions, DevOps Practices, Workflow Automation, Logging & Observability, Telemetry, Performance Optimization, SQL Server, PostgreSQL, Redis, Caching Strategies, Real-Time Event Systems, Enterprise System Integration, Unit & Integration Testing, Playwright, Jest, Cypress,Scalable & Maintainable System Design, Agile Collaboration, Cross-Team Mentoring, Documentation, Microsoft 365 Ecosystem, Performance Dashboards, Enterprise Collaboration Platforms.
EXPERIENCE
The GRN LLC Mar 2024 – Mar 2026
Senior Software Engineer
• Spearheaded the full lifecycle development of enterprise-grade web and mobile applications using React, React Native, and C#/.NET, delivering modular, scalable, and maintainable solutions that leveraged C# backend services and React frontends to support complex business workflows and cross-platform consistency.
• Architected and managed seamless integration with Microsoft 365, SharePoint, and Microsoft Graph API, designing secure authentication mechanisms using C# for backend logic and OAuth2/JWT, implementing role-based access controls, and ensuring multi-tenant data isolation while aligning React frontends with security standards.
• Led a cross-functional engineering team, providing mentorship, technical guidance, and architectural oversight; established and enforced coding standards for C# backend services and React component libraries, API design best practices, and efficient CI/CD workflows that improved release predictability.
• Designed and developed reusable React component libraries, internal C#/.NET automation tools, and operational dashboards to enhance development efficiency, monitor system health, and provide stakeholders with actionable insights into content management and workflow performance.
• Introduced and championed AI-assisted development tools that accelerated C# test generation, automated documentation, and streamlined code review processes, ensuring high quality and reduced time-to-market.
• Collaborated closely with product managers, UX/UI designers, and business stakeholders to translate strategic objectives into technically sound solutions, optimized system performance, and delivered an exceptional end-user experience across web and mobile platforms.
• Oversaw event-driven data pipelines and frontend synchronization processes, ensuring timely and accurate propagation of content updates, detailed telemetry logging, and robust error handling that increased operational reliability and transparency.
• Drove continuous improvement initiatives by analyzing engineering workflows, identifying bottlenecks, implementing performance optimization strategies, and advocating for modern development practices and tooling adoption across the engineering organization. Essensus May 2020 – Feb 2024
Full Stack Engineer
• Designed and delivered complex React and React Native components for enterprise asset management, integrating seamlessly with Adobe CC, Microsoft 365, and SharePoint, ensuring real-time synchronization and consistent experience across desktop and mobile platforms, while creating modular reusable components to accelerate new feature development.
• Architected integration layers with .NET backend services, implementing secure OAuth2 and JWT authentication, token rotation, and multi-tenant permission models, enabling robust data exchange and ensuring compliance with organizational security standards and audit requirements.
• Developed real-time event-driven pipelines to monitor content changes and automatically propagate updates across connected services, coupled with detailed telemetry and logging, improving operational visibility and troubleshooting efficiency.
• Led the creation of AI-assisted development tools, automating test generation, documentation, and code review processes, significantly increasing engineering efficiency and accelerating production-ready deployments under tight deadlines.
• Collaborated closely with product managers, UX designers, and leadership, providing strategic architectural recommendations, performance optimization strategies, and mentoring developers on React best practices, API integration, and secure enterprise workflows.
• Optimized engineering workflows by implementing CI/CD pipelines with automated testing, rollback mechanisms, containerized deployments, and environment versioning, ensuring predictable, high-quality releases.
• Developed internal tools and dashboards for workflow visualization, system monitoring, and content synchronization management, enabling business stakeholders to track asset states and process performance efficiently.
• Pioneered reusable cross-platform UI patterns that supported both React web and React Native mobile apps, enhancing consistency, maintainability, and developer productivity.
Softbee.nl Oct 2015 – Feb 2020
Web Developer
• Delivered complex React and React Native applications, including enterprise dashboards and mobile-first modules, ensuring cross- platform consistency, maintainable code, and optimized user experiences across high-traffic systems.
• Integrated frontends with C#/.NET microservices, implementing secure API contracts, robust error handling, OAuth2/JWT authentication, and Azure AD SSO to meet enterprise-grade security and compliance standards.
• Built and maintained asynchronous workflow pipelines and event-driven services, automating background processes, improving operational reliability, and providing real-time monitoring and telemetry for stakeholders.
• Developed reusable React component libraries, internal automation tools, and modular UI patterns, accelerating feature delivery, enhancing system scalability, and promoting maintainable, clean code practices across teams.
• Mentored junior engineers, conducted architectural reviews, and optimized performance through caching, state management, and API efficiency, fostering technical excellence, cross-team collaboration, and a culture of continuous improvement. EDUCATION
Leiden University Sep 2012 – Sep 2015
Bachelor’s Degree in Computer Science
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