Senior Fullstack Developer with 11+ years of experience building robust, scalable systems across healthcare, finance, real estate, and supply chain domains. Specialized in AI/LLM integration, modern full-stack development, and comprehensive test automation.

Core Philosophy: "Serenity as Strategy" — transforming uncertainty into structured action through calm, traceable processes where AI suggests but humans decide. Autonomous, resilient, and visionary with a proven track record of delivering consistent value under real-world constraints.

Currently leading test automation initiatives at Paylocity, designing comprehensive solutions across functional, API, performance, and security testing. Previously built AI-powered real estate solutions at JLL integrating ChatGPT APIs with enterprise systems.

🤖 AI/ML Expertise: Trained custom GPT models from scratch with PyTorch on NVIDIA Ada GPUs, integrated Claude API and ChatGPT into production systems, built intelligent agents for decision support.

🔧 Full-Stack Mastery: .NET Core since 2014, React/Angular ecosystems, real-time WebRTC platforms, microservices architecture, and enterprise system integrations.

🧪 Testing Excellence: Comprehensive test automation with Jest, Cypress, Playwright, Selenium. CI/CD pipeline integration and expanding coverage across all testing domains.

11 years C# | 10 years JavaScript | 5 years TypeScript | 3 years Python

Backend

Frontend

Testing

Personal Intelligence System for Structured Career & Financial Management

A full-stack application combining Python backend (FastAPI), React frontend (TypeScript + Vite), and YAML-based data persistence. The system assists with CV generation, opportunity tracking, financial projections, and AI-assisted career management through Claude API.

Philosophy: "Serenity as Strategy" - transforming uncertainty into structured action through calm, traceable processes where AI suggests but humans decide.

Stack: React 19 · TypeScript · FastAPI · Python 3.11+ · Claude API · Redis · Tailwind CSS v4 · Zustand

Key Features:

• ✅ AI-powered CV generation with Claude API
• ✅ Job pipeline management (discovered → applied → interviewing → offer)
• ✅ Financial projections and goal tracking
• ✅ Career chat with AI-assisted decision-making

Vegan Distribution Platform - Code for the Animals

Enterprise-grade distribution management system for ethical vegan businesses. Built with Clean Architecture, CQRS patterns, and multi-tenancy support. Features advanced inventory management, real-time order processing, and AI-powered content generation.

Stack: .NET 10 · Blazor Server · PostgreSQL 15 · Entity Framework Core · Redis · Docker · Kubernetes

Impact:

• ✅ Serves real businesses (Mona la Dona, Sano Market, La Papelería)
• ✅ 30% reduction in manual tasks for distributors
• ✅ Production-ready with >99.5% uptime target

Custom GPT Model Training from Scratch with PyTorch on NVIDIA Ada GPUs

Hands-on deep learning project implementing and training a minimal GPT architecture (nanoGPT) using PyTorch. Demonstrates end-to-end machine learning workflow from model implementation to GPU-accelerated training, showcasing practical knowledge of transformer architectures, gradient optimization, and CUDA programming.

Stack: PyTorch · CUDA · Python · NVIDIA Ada GPUs · Transformer Architecture · nanoGPT

Achievements:

• ✅ Trained GPT model from scratch
• ✅ GPU-accelerated training pipeline with CUDA optimization
• ✅ End-to-end ML workflow from data to deployment

Real-time Voice Platform with End-to-End Encryption

Sophisticated real-time communication platform leveraging advanced WebRTC protocols for secure, low-latency audio streaming. Implements complex signal processing algorithms for noise reduction while maintaining end-to-end encryption.

Stack: WebRTC · Node.js · Socket.io · Signal Processing · End-to-end Encryption

Achievements:

• ✅ Built secure real-time voice communication
• ✅ Implemented noise reduction algorithms
• ✅ Low-latency streaming for concurrent users

• 🎯 11+ Years of software engineering experience across diverse industries
• 🤖 AI Integration Pioneer: Built GPT agents, trained custom models, integrated Claude/ChatGPT in production
• 🧪 Test Automation Expert: Comprehensive automation across Jest, Cypress, Playwright, Selenium
• 🏗️ Enterprise Architect: Multi-tenancy, CQRS, Clean Architecture, microservices
• 🌐 Real-time Systems: WebRTC platforms, distributed messaging, event-driven architecture
• 💰 Cross-Industry Expertise: Healthcare, Finance, Real Estate, Supply Chain, Automotive, HR/Payroll
• 🔧 Early .NET Adopter: .NET experience since 2014, led legacy system migrations
• 🎓 Continuous Learner: Bachelor's in Computer Systems Engineering (UTEL 2024)

Key Achievements:

• Integrated AI systems at JLL using ChatGPT APIs with enterprise real estate platforms
• Built scalable supply chain planning tools at PlanetTogether with React/.NET
• Trained custom GPT models from scratch with PyTorch on NVIDIA Ada GPUs
• Designed comprehensive test automation strategies at Paylocity
• Developed production vegan distribution platform serving real businesses

• 🧪 Leading Test Automation at Paylocity - Designing comprehensive testing solutions across functional, API, performance, and security domains
• 🤖 Exploring Advanced AI: Deep learning, model training, LLM agent orchestration
• 🏗️ Building Personal Infrastructure: SerenityOps for career intelligence, automated decision support systems
• 📚 Learning: Advanced Kubernetes patterns, observability systems, healthcare-grade security

Open to:

• AI/ML Engineering roles
• Senior Full-Stack positions
• Test Automation Architecture
• Technical Leadership opportunities

💼 Professional Email: bernarduriza@gmail.com 🌐 Website: bernarduriza.com 💼 LinkedIn: linkedin.com/in/bernarduriza 💻 GitHub: @BernardUriza 📍 Location: Guadalajara, Jalisco, Mexico