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Finance professional with 4 years of experience specializing in Accounts Receivable, Collections, Invoice Management, Accounts Payable, reconciliations, month-end closing, administrative support, and customer service. Proficient in various ERP systems and Excel, with a strong focus on optimizing cash flow, improving operational efficiency, and delivering excellent client support. Experienced in handling customer communications, resolving issues, managing administrative tasks, and quickly adapting to new systems and processes. What I bring to your company: • Invoice Management: Issuing and recording invoices accurately, ensuring compliance and data integrity. • Customer Support: Providing quick and positive support in English and Portuguese via email, phone, and chat, resolving inquiries related to invoices, payments, and orders. • Payment Processing: Recording and applying customer payments in ERP systems, ensuring accurate reconciliation. • Debt Recovery: Managing overdue debts and collections, maintaining strong client relationships. • Account Discrepancy Resolution: Analyzing and resolving account discrepancies in collaboration with internal teams. • Credit Risk Management: Conducting credit investigations and financial assessments for accurate risk evaluation and credit decisions. Main Results: • Automated the invoicing system, reducing errors and rework by approximately 55%. • Streamlined financial operations and successfully negotiated old debts, improving financial control and health by 40%. • Re-engaged inactive clients who had migrated to competitors, increasing the active customer base by 25%.

I’m a Chemical Engineer turned Microsoft 365 Consultant, and I represent Nuvora Tech, a specialized Microsoft Business Applications and automation studio. I’m experienced in SharePoint and the Power Platform (Power Apps, Power Automate, Power Pages, and Copilot Studio), and I’ve built business applications such as PO/PR/Invoice Management Apps for international companies. Today, I lead a highly capable consulting team in Brazil, serving clients in the USA, UK, Ireland, Portugal, Brazil, and across Latin America, with completed projects in Germany, England, and more. We focus on building end-to-end business solutions that are secure, scalable, and easy to use in real life. Beyond Microsoft 365, I design smart automation ecosystems powered by tools like n8n, Make, Zapier, and AI agents. I connect whatever systems my clients use CRMs, ERPs, APIs, or custom databases to create streamlined, intelligent operations that save time and drive growth. We work with: • Custom CRM and ERP-style solutions • Asset Management Apps and Travel Management Apps • AI-powered automation and assistants • Microsoft Azure, Azure AI, and Microsoft 365 governance and administration I’m known for clear communication and a self-managing style. But the real advantage when you work with me is the structure behind me: ✅ Free consulting to map your real needs I don’t charge just to “talk about the project”. We help you identify pains, fragile points, security gaps, and a realistic roadmap before you commit—saving you money and avoiding wrong technical decisions. ✅ Direct access to our key people at no extra cost You get direct access to our project manager and lead engineer: • Quick 15-minute check-ins for questions and decisions • Up to 1-hour sessions to explore new ideas or improvements, even for completed projects ✅ Beyond delivery: governance, automation, and scale Our focus is not only on “delivering the project”, but on helping you use Microsoft 365 governance and smart automation to transform how your business operates, making it more fluid, more controlled, and ready to scale safely. When you hire me on Upwork, you’re not getting a single freelancer, you’re getting a squad: solution architects, project managers, and a dedicated customer relations channel focused on shipping your project with speed, quality, and zero drama. If you’re looking for a partner who thinks beyond the task list and cares about your long-term operations, let’s talk. Technology is not about systems. It is about people with time, vision, and clarity.

🏆 Free Consultation to assess your project and our fit 🏆 Guarantee of success for all projects and all agreed deliverables I'm an expert with 17 years of experience in creating Websites, Landing Pages, Mobile Apps, Web Apps, eCommerce websites, Marketplaces, Sales Pages and Brands. I have skin in the game and I'm deeply involved with all my clients and projects. With my experience and processes, I'll understand business requirements and anticipate problems and solutions, ultimately ensuring that our work together isn't just beautiful, but also functional, optimized and unique. I have 11 years of professional practice in Marketing, with an MBA degree, which allows me to bring a whole new layer of meaning to all of my designs, always prioritizing: - Business Performance (Sales, Institutional KPIs, etc) - Look & Feel - Branding Compliance & Consistency - Scalability, flexibility, testing and ownership In other words, I'm not just focused on creating beautiful designs, but ones that actually work as a long lasting digital assets. And even if you're completely lost in the process, unsure of what you need and want, I can still help you! I've worked on over 1000 projects and I will guide you to make well informed decisions at every step of the way. And regardless of your preference, if headless, HTML/CSS/JS, PHP, React, WordPress, Elementor, Webflow, Framer, Shopify, Big Commerce, WooCommerce, Hubspot, GHL or others, I can delineate the best course of action for the project. My main areas of expertise are: - DTC (Nutraceuticals, Telemedicine, Technology, Wellness, Beauty, Pharma, Cosmetics, Info Products, Personal Brands) - Fintech and Technology in general - Corporate Websites - Real Estate - Outsourcing Agencies - Consultants and Coaches - B2B SaaS (Cybersecutity, MedTech, LegalTech, RETech, Data Intensive tools, Financial Platforms and much more) - Crypto Platforms (Exchanges, NFTs, Arbitrage, Brokerages, P2P, General Defi, Marketplaces) - Creative/Influencer-led businesses - Enterprise Brands - eCommerce (A multitude of different areas, B2C and B2B) - Native Mobile Marketplaces and Social Networks (sports, lifestyle, family, nutrition, education and more) Let's have a call or chat and discuss possibilities!

I help companies design, build, and scale production-ready AI systems — LLM applications, RAG platforms, AI agents, NLP pipelines, machine learning models, workflow automations, and full-stack AI products. I’m an Expert-Vetted Upwork freelancer, ranked in the Top 1% of talent on the platform, with 12+ years of experience across AI, Data Science, Machine Learning, GenAI, NLP, MLOps, automation, and product engineering. On Upwork, I’ve delivered $400K+ in client work, 60+ jobs, and 8,600+ hours for startups, enterprises, and global clients. My strongest fit is with teams that need more than a prototype. I help clients move from idea to architecture, from architecture to implementation, and from implementation to reliable AI products that can be used in real business workflows. What I can help you build • LLM-powered applications, copilots, and AI assistants • Retrieval-Augmented Generation, or RAG systems • AI agents for research, automation, decision support, and internal operations • Chatbots connected to private company data, documents, and knowledge bases • NLP pipelines for classification, summarization, extraction, matching, and search • Semantic search and embedding-based recommendation systems • Fine-tuning, model evaluation, prompt engineering, and LLM workflow optimization • Machine learning models for prediction, forecasting, clustering, ranking, and anomaly detection • AI automations using Python, APIs, databases, cloud tools, vector databases, and orchestration layers • Technical architecture for AI SaaS products, internal tools, and AI operating systems Why clients work with me I combine senior AI leadership with hands-on technical execution. I can speak with executives about business value, work with product teams on scope and roadmap, and collaborate with engineers on architecture, implementation, deployment, and long-term maintainability. My background includes enterprise AI and Data Science work for companies such as HEINEKEN, Korn Ferry, and SKF, plus 60+ consulting projects across multiple industries and countries. I’ve led Data Science and AI initiatives, built production ML systems, designed GenAI and RAG solutions, and worked across both strategic AI adoption and hands-on engineering. I’m also a founder and full-stack product builder. As the founder, CEO, CTO, and solo developer of Vivai, I built a marketplace platform end to end, including mobile app, backend APIs, PostgreSQL database architecture, search, payments, authentication, partner workflows, cloud deployment, and production operations. Example projects I can support • Build a custom AI assistant over your company documents • Create a RAG system with retrieval quality, evaluation, monitoring, and guardrails • Automate business workflows using LLMs, APIs, scheduled jobs, and human-in-the-loop review • Improve an existing AI product for accuracy, reliability, speed, and cost • Develop NLP classification, extraction, summarization, or semantic search systems • Design the architecture for an AI SaaS product or internal AI platform • Turn a rough AI prototype into a stable, maintainable production system I’m a good fit if you need someone who can understand the business problem, recommend the right AI architecture, and build a practical solution with clean, maintainable implementation. If your goal is to build real AI products — not just demos — I can help you get there.

Need a reliable senior full-stack developer to build, improve, or scale your web application? I’m a Senior Software Engineer with 7+ years of experience building scalable web platforms, RESTful APIs, distributed systems, and cloud-native applications using PHP, Laravel, React, AWS, Docker, SQL, Kafka, and RabbitMQ. I help businesses turn complex requirements into clean, maintainable, production-ready software. In previous projects, I designed and developed a system that managed 10,000+ policies and impacted 500+ agencies, improving operational efficiency and supporting scalable business growth. Unlike developers who simply copy and paste AI-generated code, I focus on architecture, readability, maintainability, and long-term system health. Every implementation is evaluated for performance, scalability, and future maintenance. What I can help you with • Build scalable Laravel/PHP, Python applications from scratch • Develop RESTful APIs and backend systems • Improve existing legacy applications built with Laravel, CodeIgniter, or PHP • Build modern React interfaces with Material UI or Tailwind CSS • Design SQL databases and optimize slow queries • Deploy and scale applications on AWS • Set up Docker environments and CI/CD pipelines • Implement event-driven systems using Kafka or RabbitMQ • Improve code quality using SOLID principles, clean code, and best practices • Debug performance issues, server problems, and production bugs Technical Expertise Backend: PHP, Laravel, Python, CodeIgniter Frontend: React, Material UI, Tailwind CSS, responsive UI, API integration Cloud & DevOps: AWS, Docker, CI/CD, Linux, Bash, scalable deployments Databases: SQL, database design, query optimization, high-performance data handling Messaging: Kafka, RabbitMQ, asynchronous processing, event-driven architecture Why clients work with me 🏆 Top Rated 💯 100% Job Success ⭐ 5-Star Reviews ✅ Strong problem-solving and analytical thinking ✅ Clear communication with technical and non-technical stakeholders ✅ Focus on clean, readable, and maintainable code ✅ Results-driven mindset with measurable business impact ✅ Long-term thinking, not quick fixes I’m open to long-term collaborations, complex backend systems, SaaS platforms, API development, cloud deployments, and challenging full-stack projects.

Senior Full Stack Engineer with 8+ years building scalable apps across fintech, payments, logistics, e-commerce (POS) and SaaS — production solutions serving 5M+ users and 10K+ businesses. Currently Software Engineering Coordinator at ConnectPlug, leading ERP modernization, payment microservices, delivery platform migration and franchise management. Also Full Stack Developer at FleetPay (freelance), delivering backend and Flutter mobile features end-to-end. STACK • Backend: PHP, Laravel, Laravel Octane (RoadRunner), Node.js, TypeScript, REST APIs, Webhooks • Frontend: Vue 3, Nuxt.js, React, TypeScript, Tailwind • Mobile: Flutter, Dart (iOS/Android release) • Cloud: AWS (Lambda, ECS, DynamoDB, S3, CloudWatch), Docker, CI/CD (GitHub Actions, Vercel) • Databases: MySQL, PostgreSQL, DynamoDB, SQL Server • Testing: PHPUnit, Jest, Cypress, TDD, Clean Architecture, SOLID • AI: Cursor, Claude, MCP, Copilot — code generation, tests, E2E automation, AI code review KEY ACHIEVEMENTS • Led online payment microservice and provider-agnostic payment link platform (Laravel Octane, PostgreSQL) • Coordinated legacy delivery migration to high-performance SaaS (Octane + DynamoDB, Open Delivery), 24M orders/month • Full stack across Laravel microservices and Flutter apps (banking UI, OFX export, mobile release engineering) • End-to-end migration of payment processor handling millions of transactions/day • Modular payment integrations (iFood, Cielo, Google Pay, Apple Pay, Asaas) • Banking partner integrations: KYC, biometrics, signed webhooks • Optimized queries from seconds to microseconds; reduced 11GB+ Webpack builds • 3x faster delivery via AI-assisted development • Modernized legacy stacks to Vue 3/Nuxt/TypeScript and modular microservices PROFILE Engineering Coordinator · Tech Lead · Senior Software Engineer · Software Architect Distributed systems, microservices, performance, technical leadership, mentorship, CI/CD São Paulo, Brazil — Open to Remote, Hybrid and International Open to: Senior/Staff Engineer, Tech Lead, Engineering Manager, Software Architect, Freelance Languages: Portuguese (native), English (Professional Working) #PHP #Laravel #TypeScript #VueJS #NuxtJS #React #Flutter #AWS #Docker #DynamoDB #FullStack #TechLead #Fintech #Payments #SaaS #Microservices #AIAssistedDevelopment #SeniorEngineer #RemoteWork