César A. Suárez Orizondo

As a freelance developer, I work directly with clients to create custom web solutions. I specialize in modern application development with React, Next.js, and cloud technologies, offering everything from landing pages to complex business management systems.

• Building complete web applications using Next.js, React, and TypeScript. Implementation of modern, responsive interfaces with smooth animations and optimized user experience.
• Integration with third-party APIs, payment systems, and cloud services. Backend development with Node.js and PostgreSQL/MongoDB databases.
• Implementation of automation solutions using OpenAI APIs and generative AI tools to optimize clients' business processes.
• Advising clients on scalable architectures, development best practices, and digitalization strategies for their businesses.

Technologies — React — Next.js — TypeScript — Node.js — PostgreSQL — MongoDB — Tailwind CSS — Framer Motion — OpenAI API — Vercel — Stripe

At Eviden (formerly Atos Digital), I worked on digital transformation projects for large enterprises. I focused on developing cloud-native solutions and modernizing legacy systems using microservices-based architectures.

• Development of serverless applications using AWS Lambda, API Gateway, and DynamoDB. Implementation of CI/CD pipelines with AWS CodePipeline and automated deployments.
• Migration of monolithic applications to microservices architectures, improving scalability and maintainability of enterprise systems.
• Development of RESTful and GraphQL APIs for integration between internal and external systems. Implementation of messaging patterns with AWS SQS and SNS.
• Creation of detailed technical documentation and implementation guides to ensure knowledge transfer and long-term maintenance.

Technologies — AWS Lambda — AWS API Gateway — DynamoDB — AWS SQS — AWS SNS — AWS CodePipeline — Python — Node.js — GraphQL — Docker — Terraform

At Atos Consulting, I participated in technology consulting projects for the public sector. I developed scalable web solutions using modern technologies and agile methodologies, collaborating with multidisciplinary teams.

• Implementation of user interfaces with React and Vue.js, following accessible and responsive design principles. Utilization of corporate design systems.
• Creation of backend services with Java Spring Boot and Node.js. Design and implementation of relational databases with PostgreSQL.
• Active participation in Scrum ceremonies, including sprint planning, daily standups, and retrospectives. Close collaboration with Product Owners.
• Code management with Git and GitLab, implementing GitFlow workflows and code reviews to maintain software quality.

Technologies — React — Vue.js — Java — Spring Boot — Node.js — PostgreSQL — Git — GitLab — Jira — Confluence — Docker

Smart LLM router that selects the best model per request and explains every decision. Full-stack platform with scoring engine, fallback system, and OpenRouter catalog sync.

• Heuristic scoring engine with quality, latency, and cost components
• Multi-provider fallback system for operational continuity
• Living model catalog synced with OpenRouter API

Technologies — Astro 6 — React 19 — TypeScript — Tailwind CSS — Framer Motion — Python — FastAPI — SQLModel — PostgreSQL — Docker — OpenRouter

Links: GitHub

Local AI desktop assistant for Windows — voice-controlled, privacy-first. Tauri + React + Python stack with local STT/LLM/TTS pipeline.

• Local STT with faster-whisper for offline speech recognition
• Multi-provider LLM support via Ollama and LM Studio
• Tauri v2 system layer with global hotkey and overlay window

Technologies — Tauri — React 19 — TypeScript — Tailwind CSS — Python — FastAPI — Rust — SQLite — WebSocket — Ollama

Links: GitHub

Developer knowledge base that helps you store, search, and reuse technical knowledge with AI. Semantic search, snippet management, and agent-based workflows.

• AI-powered knowledge processing and semantic search
• Snippet and documentation management system
• Agent-based workflows for automation and insights

Technologies — Next.js — React — TypeScript — Node.js — PostgreSQL — WebSockets — AI — Tailwind CSS

Links: GitHub

Comprehensive management system for Bar Guantanamera with real-time orders, inventory control, establishment configuration and sales analytics.

• Administrative Dashboard with Kanban view and kitchen system
• Real-time notifications with Server-Sent Events (SSE)
• Complete menu management: categories, products, prices and availability

Technologies — Node.js — Express — Prisma ORM — PostgreSQL — Next.js 14 — Tailwind CSS — Framer Motion — Docker — Swagger/OpenAPI

Links: GitHub