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I'm an experienced and dedicated software developer with a Bachelor's degree in Computer Science and over 4 years of professional experience in full stack web development, web scraping, data extraction, and machine learning projects, particularly in data science and computer vision. My expertise lies primarily in backend development, where I specialize in Python frameworks such as FastAPI, Flask, Django, Odoo, and Firebase, along with frontend experience in Vue.js and React. I am also proficient in asynchronous programming and have extensive experience working with both relational (PostgreSQL) and non-relational databases (MongoDB). Additionally, I have worked with cloud technologies like Google Cloud, AWS, and Docker. As a professional, I possess strong analytical and problem-solving skills, gained from working with third-party code, including open source software and Odoo modules. I prioritize automated testing and adhere to coding best practices, such as SOLID principles and Design Patterns, to ensure that I deliver clean, well-documented, and reusable code that facilitates seamless maintenance. Thank you for visiting my profile, and I look forward to hearing from you!

Senior Full-Stack Architect/Engineer specialist in building scalable SaaS platforms using Node.js, React, Golang and cloud infrastructure and or microserces. I am a constantly updated programmer with 30 years of experience in software development and over 15 years as a software/solutions architect. I can develop/solve applications in 99% of areas or niches. How I can help you: • SaaS platform development • Microserces platform development • Scalable platform development • API development • API Integrations • Event Oriented Architecture • Scalable backend architecture • REST APIs and microservices • Cloud infrastructure and DevOps • System modernization and performance optimization • MVP development for startups • Enterprise-level system architecture • Figma → Software • Systems Web • Ecommerce • Landing Pages • Website • PWA • Mobile Aplication ( Android, IOS) • Server Configuration • Software Achitecture • Cloud Architecture • TDD • DDD • Clean Architecture Technologies Backend: Node.js, NestJS, TypeScript, Java, GoLang Frontend: React, Next.js, HTMX, Html, CSS Mern Stack, Infrastructure: Docker, Nginx, Certbot, PM2, Kubernetes, CI/CD, AWS - Amazon Web Services, Google Cloud, Microsoft Azure, Digital Ocean, Hetzner, Linux Automation: DevOps, Ansible , Terraform, Prometheus, Grafana , traefik Architecture: Microservices, Event-Driven Architecture, DDD, High Availability Systems, Distributed Systems I am a native Brazilian Portuguese speaker. I can handle technical communication in English, including reviewing and translating audio and video materials with the support of AI tools, so feel free to send them if helpful. I also understand Spanish very well. Portuguese is my preferred language for meetings. Experience I have worked on large-scale systems, including banking platforms, enterprise systems, streaming platforms, large e-commerce sites, and SaaS products used by thousands of users. I also have experience designing high-availability systems from scratch to deployment, building microservices architectures, and helping companies scale their infrastructure. Technical career leader. I already have led multiple teams on simultaneous projects. And in a large consulting and outsourcing company I led 3000 programmers in different teams for clients in the banking sector. If you are creating a startup, a SaaS platform, or an enterprise system, I can help you design the architecture and implement the solution. If you want to be sure your candidate is the right one and technically suitable for your project, I also conduct technical interviews to evaluate software engineers. I help companies quickly validate candidates and determine if they are the right fit for the role in a structured 30-minute technical conversation. I can tell you which of your candidates is the best for your project. I also help refine your project description. Let's talk about your project.

Hey there! This text was not generated by AI! 😉 I'm here to help you with software architecture from scratch. We have assisted many people in building software from the ground up and refactoring their legacy projects to make them more modern, secure, and efficient. We know what we’re doing. Let’s schedule a quick 10-minute call to discuss your project and explore how we can work together. I look forward to hearing from you! Keywords: AWS, Serverless, AWS Lambda, Microservices, REST APIs, Cloud Architecture, CI/CD, Docker, Scalable Systems, High Availability, Distributed Systems, NoSQL & SQL Databases, Performance Optimization, Security Best Practices.

COMMUNICATION AND PAYMENTS ONLY VIA UPWORK, PLEASE DO NOT INSIST Quick Summary: Former Deloitte Senior GenAI Software Engineer with 12+ years of Python expertise. Specializes in developing AI agents using Python, LangChain, and LangGraph, deploying them across major cloud platforms (AWS, GCP, Azure). DataCamp-certified in Data Analysis, Data Science, and Data Engineering and HackerRank-certified Software Engineer. "Jonatas was quick, accurate, and the code he wrote for my project was effective and well commented! Definitely recommend." ★★★★★ "Jonatas is an excellent programmer. He delivered a well-written Pinescript strategy and indicator as promised. Keep up the good work." ★★★★★ "We hired Jonatas for a week to optimize our models, and the results were incredible: over a 50% reduction in execution time! An extremely dedicated and focused professional." ★★★★★ Tired of manual processes and hitting limitations with your current tech? I build intelligent, autonomous AI agents that automate complex workflows, provide deep data insights, and create powerful new efficiencies for your business. You're likely here because you have a powerful vision for AI but need a true expert to bring it to life, in need of a strategic partner who can architect and deploy robust, enterprise-grade AI solutions on major cloud platforms like AWS, GCP, or Azure. That's exactly what I do. As a former Senior GenAI Software Engineer for Deloitte, I specialize in translating complex business needs into high-performance AI systems. I don't just deliver code; I deliver measurable results and a tangible return on your investment. My core value to you: ✅ Enterprise-Grade GenAI Development: Leveraging my experience at Deloitte, I build sophisticated AI agents using Python, LangChain, and LangGraph for the "new agentic era" of software. ✅ Proven Data Science Excellence: I implement advanced data analysis and predictive models, achieving up to 99.70% R² accuracy on projects, ensuring your decisions are backed by reliable data. ✅ Full-System Ownership: I am not just an AI specialist. With full-stack expertise (React.Native, TypeScript, Python, Flask) and deep database knowledge (PostgreSQL), I can own your project from front-end to back-end and deployment. ✅ Certified & Cloud-Fluent: I am certified by DataCamp (Data Analyst, Data Scientist, Data Engineer), HackerRank (Software Engineer), and AWS (Cloud Practitioner), with hands-on experience deploying across AWS, GCP, and Azure. My services include: - Custom AI Agent & LLM-Powered Applications - Workflow Automation & Process Optimization - Predictive Analysis & Machine Learning Models - Automated Data Scraping & ETL Pipelines - End-to-End Cloud Solution Architecture (AWS, GCP, Azure) - High-Performance Back-End Development with Python & Flask Let's move your project from idea to implementation. Click the green "Invite to Job" button and send me a message about your project goals. I'll get back to you promptly to schedule a brief introductory call. P.S. Don't just take my word for it. Check out my portfolio at github to see how I've implemented a huge variety of projects and developed data-driven products to my clients. Let's build your success story next!

Founding Engineer who built a production B2B AI SaaS from zero to live users as the sole engineer across backend, frontend, AI/ML, infrastructure, and security. Scales his output through fluent use of AI-powered coding tools, shipping at a velocity that would typically require a small team. 15+ years of enterprise engineering depth behind it, including 12 years at Brazilian enterprise software firms where he led delivery teams of 4–5 engineers across complex B2B projects. Equally comfortable operating as solo founding engineer or technical co-founder shaping product strategy with founders, and as a team lead hiring, mentoring, and scaling an engineering org from the first hire onward.

Certified Webflow Partner and front-end developer specializing in pixel-perfect Figma to Webflow builds, Webflow CMS architecture, Webflow eCommerce, and performance-first web design. I work with startups, agencies, and scaling businesses who need a Webflow developer who takes full ownership from design handoff through to live site, SEO setup, and integrations. 🏆 TOP RATED PLUS on Upwork ✅ Certified Webflow Partner - 8+ years of Webflow development experience 🏅 100% client satisfaction across every Webflow project delivered ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ SERVICES I PROVIDE AS A WEBFLOW DEVELOPER ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ▸ Webflow Development - full Webflow builds with Finsweet Client-First for modular, scalable architecture ▸ Figma to Webflow - precise, component-based translation with clean naming, responsive across all breakpoints, pixel-perfect to the original design ▸ Webflow CMS - blogs, services, case studies, resource libraries, team directories, and dynamic content collections ▸ Webflow Interactions - GSAP animations, Lottie, scroll-trigger effects, and micro-interactions ▸ Webflow eCommerce - product catalogs, checkout UX, and custom store features ▸ Webflow Landing Pages - CRO-driven Webflow landing page builds with analytics and A/B testing integration ▸ Webflow SEO and Performance - Core Web Vitals, Cloudflare CDN, schema markup, metadata, image optimization, and Lighthouse audits ▸ Webflow Integrations - Zapier, Make, Stripe, HubSpot, Airtable, Typeform, Google Analytics, GoHighLevel As a Certified Webflow Partner I build every Webflow site on Finsweet Client-First structure so the codebase stays clean, scalable, and easy to hand off to your internal team or another Webflow developer. Every Figma to Webflow translation I deliver is component-based with consistent naming, responsive across breakpoints, and polished to match the original design at pixel level. For Webflow projects that need to perform in search, I handle the full SEO setup including metadata, Open Graph, schema markup, Cloudflare configuration, image optimization, and Lighthouse audits so your Webflow site ranks and loads fast from day one. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ WHAT CLIENTS SAY ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ⭐⭐⭐⭐⭐ "Gone through a bit of a nightmare before finding Thiago. Two developers on Upwork, both with strong reviews, couldn't get any of the tasks done. Thiago was completely different." - verified Upwork client ⭐⭐⭐⭐⭐ "I can't say enough good things! He went above and beyond throughout the project. Communication was fantastic, always quick to respond and super helpful. Truly amazing at what he does!" - verified Upwork client ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ WHY CLIENTS CHOOSE ME AS THEIR WEBFLOW DEVELOPER ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ▸ Certified Webflow Partner - verified Webflow development, Webflow CMS, Webflow Interactions, and Webflow eCommerce expertise ▸ Figma to Webflow specialist - pixel-perfect builds, component-based architecture, Finsweet Client-First on every project ▸ Performance and Webflow SEO built in from the start - not bolted on at the end ▸ Clear communication with teams and agencies - fast to respond, flexible on scope, no handholding required ▸ Every Webflow project ships with organized CMS collections, documented component structure, and responsive layout tested across all breakpoints and browsers ▸ Post-launch support available - Webflow bug fixes, CMS updates, feature additions, and Cloudflare configuration audits ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ADDITIONAL SERVICES ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ▸ Web Design: Squarespace, Wix, and Framer builds and redesigns ▸ WordPress and Shopify: CMS development, WooCommerce, and Shopify store setup ▸ Front-End Development: React, Vue, CSS3, JavaScript, Node.js, and PHP ▸ Ongoing Webflow support: bug fixes, maintenance, CMS updates, and feature additions Whether you need a complete Figma to Webflow build, a Webflow CMS overhaul, a performance and SEO audit, or a quick Webflow fix - send me a message and let us discuss your project.