Hello, I'm
Guilhermo González
Senior Full-Stack Developer
Passionate about creating innovative digital solutions and exceptional user experiences.
About Me
I'm a passionate full-stack developer with expertise in modern web technologies. I love building innovative solutions that make a difference.
With several years of experience in web development, I specialize in creating scalable, user-friendly applications using modern technologies. I'm passionate about clean code, performance optimization, and delivering exceptional user experiences.
I enjoy working on challenging projects that push the boundaries of what's possible on the web, and I'm always eager to learn new technologies and best practices.
When I'm not coding, you can find me exploring new technologies, contributing to open-source projects, or sharing knowledge with the developer community.
🗣️ Languages
Skills
Core Programming Languages
Backend
📁 Frameworks & Platforms
📁 Architecture Patterns
📁 Messaging & Integration
Frontend & Mobile
Databases
Cloud & Infrastructure
📁 Azure
📁 AWS
📁 Infrastructure
Testing & Quality Assurance
Dev Tools & Practices
Experience
Senior Full Stack Developer
ALTEN Canada (Société Générale)
- Led cloud migration and regulatory compliance initiatives for critical banking systems, reducing infrastructure costs by 50%+ and delivering ahead of schedule with recognition from senior leadership.
- Architected and implemented microservices-based solutions that improved report generation performance from 10+ hours to minutes, eliminating processing bottlenecks.
- Modernized legacy platforms using Java with Spring Boot, Node.js, React, and containerized deployments with Docker and Kubernetes
- Mentored developers, formalized code review standards, and contributed to long-term architecture and technical roadmap decisions.
Staff Software Engineer
Boticário Group
- Designed and delivered high-volume fulfillment capabilities, scaling WMS and internal systems to process 871,000+ products daily across multiple brands and channels.
- Implemented order integration, picking workflows, checkout processes, and carrier selection systems for the company's first 100% multibrand distribution center.
- Developed automated order processing and carrier routing logic that reduced delivery times by 1-2 days while maintaining accuracy across high-volume warehouse operations.
- Optimized order fulfillment workflows to support seamless operations across e-commerce, franchise stores, and reseller networks with minimal order processing errors.
Senior Software Engineer / Tech Lead
Nimbly
- Designed and developed core platform modules (accounts payable/receivable, invoicing, bank reconciliation, inventory management) that scaled to 500+ customers, automated R$ 4+ billion in transactions, and reduced client operational effort by 80%.
- Built bank API integrations with major Brazilian banks handling automated payments, invoice issuance, and real-time reconciliation.
- Wore multiple hats: backend and frontend development, mobile apps, Azure infrastructure, customer onboarding and support, product design decisions, and technical documentation, making independent decisions with high autonomy.
- Reduced support tickets by ~50% through UX improvements, increased test coverage, and strategic refactoring of high-risk code areas, improving platform stability.
Founder / Full Stack Developer
Mestre Gourmet
- Co-founded and built the web platform using C# .NET, JavaScript, jQuery, and SQL
- Server, from initial prototype to production.
- Developed the Android application in Java and managed client onboarding,
- support, and training for restaurant partners.
Web Developer
GHN
- Developed web-based business applications using C# .NET, SharePoint, JavaScript,
- and jQuery for clients in different industries.
- Collaborated with analysts and clients to refine requirements and deliver
- maintainable, production-ready features.
Projects
A showcase of my recent work and side projects that I've built with passion and dedication.
WhatsApp Bulk Messaging
WhatsApp bulk messaging micro-SaaS with Cloud API integration for compliant multi-contact messaging, featuring template management, contact organization, and queue-based campaign delivery.
Me, But as an AI
An AI chatbot that knows more about my career than I do (and actually remembers project details). Uses RAG with vector embeddings to answer questions about my professional background, so you can interrogate my resume while I take a nap.
More Projects Coming Soon
Stay tuned for exciting new projects and updates!
Latest Articles
Thoughts on web development and technology
Contact
Let's work together! Feel free to reach out for collaborations or just a friendly hello.
Get in Touch
I'm always interested in new opportunities, whether that's working on exciting projects, collaborating with amazing teams, or simply discussing technology and innovation.