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Mid-level JavaScript Developer.

JavaScript | ReactJS | NextJS | NodeJS | TypeScript | AWS
JavaScript Developer with over 4 years of experience in building scalable web applications. Strong expertise in React, Next.js, Node.js, and TypeScript. Deep understanding of browser internals, rendering cycles, and performance optimization. Consistent application of SOLID principles and Design Patterns to deliver clean, maintainable, and scalable architectures.
Technical Skills
• Languages: JavaScript (ES6+), TypeScript, C#, .NET• Frontend: React.js (advanced hook optimization), Next.js (App Router, SSR, API Routes), HTML5, CSS3• Backend: Node.js, Prisma ORM, REST APIs, WebSockets, .NET APIs• atabases: PostgreSQL, MySQL, MongoDB• Cloud and DevOps: AWS (EC2, IAM, VPC, EBS, Load Balancer, SSL), Docker• AI / Computer Vision: YOLO (custom training), OpenCV• Architecture: SOLID, Clean Architecture, Performance Optimization
Key Strengths
• Advanced React performance optimization (granular state and rendering control)• Deep understanding of hook lifecycles and scenario-based architectural decision-making• Scalable API design with authentication and modular structure• Production-ready deployments on AWS• Strong business communication (Customer Success experience)• I am proactive, highly motivated, and passionate about games and technology. I enjoy collaborating with teams, sharing knowledge, and continuously improving my technical and architectural skills.

SENIOR UNITY DEVELOPER

With over 6 years of experience in developing games and high-performance applications for WebGL, Android, iOS, Windows, Quest 2, Quest 3, and HoloLens. Specialist in multiplayer architecture, performance optimization, and the application of Design Patterns and SOLID principles to build scalable and robust systems.
Technical Skills
• Unity 3D (C#) – Advanced architecture and performance optimization• Multiplayer: Photon PUN, Photon Fusion, Mirror, Colyseus Arena, WebSocket• High-performance WebGL development• AR / VR / Mixed Reality (Quest 2, Quest 3, HoloLens)• Lobby architecture, matchmaking, and gameplay synchronization• Inventory, economy, and guild systems• AWS (EC2, VPC, IAM, Deploy)• Docker • Application of SOLID and Design Patterns (Factory, Builder, Observer, State Machine, Object Pooling)
FONE: 919887-48255EMAIL: marcos.valerio.dev@gmail.com