Data Scientist specialized on Machine Learning, Supervised Learning, Deep Neural Networks, Recurrent Neural Networks and Reinforcement Learning. I have worked on a wide variety of industries: finance, bank, hedge funds, manufacturing, technology, domain names, horse wranglers and betting games. With machine learning I have produced stock market strategies with a compound annualized return near 20% (yearly), which are currently publish on my web page (see below). In 2022 I was certified as AWS Machine Learning Specialist. The first 10 years of my professional career I had worked as a backend developer, coding high availability services on Python, C, Java and Perl. Since 2012 I am working full time as a data scientist. I enjoy machine learning. I am not a standard data scientist: I have studied the implementation details of the main ML algorithms, allowing me to customize them according to the nature of the working problem. Since 2014 I am working developing ML models freelance, on the Upwork platform. I have more than 11,000 net hours, 35 different jobs, ranked with 4.99 stars and 100% job success rate. - Programming (currently): Python - Programming (past): R, Perl, Java and C. - Machine Learning Models: Naive Bayes, Fisher Discriminant Analysis, Nearest Neighbor, Multivariate Regression, Logistic Regression, Decision Trees (Chaid and CART), Support Vector Machine, Genetic Algorithm and PSO - Ensembles: Random Forest, Gradient Boosting Machine, Bagging and Boosting - Deep Learning: Traditional Neural Networks (Backpropagation, CPN, SOM), Deep NN, Convolutional NN, Recurrent NN, LSTM and Bidirectional Recurrent NN. TensorFlow with GPU using Low Level API and Keras. - Reinforcement Learning: Deep Q networks, Policy Gradient, Actor-Critic, Actor-Critic with Experience Replay (ACER), Soft Actor-Critic (SAC), Adversarial Imitation Learning, Hindsight Experience Replay (HER), Proximal Policy Optimization and TPRO - Clustering: Hierarchical, K-Means, Fuzzy C-Means, EM, DBSCAN, OPTICS, Clara and PAM. - Hadoop: Map/Reduce, Pig, Hive and Spark - AWS/Azure Example of my works: gmoncarz.github.io/machine_learning_tour

🥇 Top Rated on Upwork | 5+ Years Delivering Production Systems AI Orchestration • Agentic Systems • AI Ops • Automation Architecture I architect and orchestrate production-grade AI systems. In 2026, writing code is no longer the bottleneck. Orchestration is. My work focuses on designing modular infrastructures where AI agents, automation pipelines, and scalable systems operate reliably, transparently, and under control. I build execution environments where LLMs, vector databases, automation engines, and backend services work together as structured components, not experiments. What I Actually Do • Architect multi-agent AI systems with clear execution boundaries • Design RAG infrastructures with embeddings, retrieval, and evaluation layers • Build AI orchestration pipelines, local or cloud-agnostic • Implement AI Ops workflows including monitoring, logging, evaluation, and rollback strategies • Structure data ingestion pipelines for scraping, parsing, normalization, and indexing • Convert unstructured knowledge into vectorized, queryable systems • Deploy local LLM infrastructures that are GPU-aware, measurable, and self-hosted • Integrate APIs, webhooks, and event-driven architectures • Create deterministic automation flows in Bash and Python where AI acts as an executor • Implement CI/CD and reproducible AI deployment environments • Engineer Linux-first, infrastructure-controlled AI stacks Approach AI writes code. I design the system that determines what AI should build, how it should be deployed, how it should be measured, and how it should recover when things fail. No black-box SaaS dependency. No fragile no-code dashboards. No hype-driven stacks. Modular components. Observable execution. Reproducible deployments. Auditable AI behavior. I Prioritize • Orchestration over raw coding • Measurable inference over demos • Infrastructure over UI polish • Control over abstraction Core Stack (AI-Centric) Python • Bash • FastAPI • Docker • Redis PostgreSQL • Vector Databases (Pinecone, Chroma) OpenAI • Cohere • Local LLMs (GPU / Self-Hosted) Debian Linux • Git • CI/CD • systemd Legacy & Extended Experience PHP (Core, Procedural, Shell-Integrated) Perl (Sysadmin, Automation) JavaScript (Node.js and Browser) HTML/CSS Languages English (Fluent) Portuguese (Brazil & Portugal) Spanish Billing Philosophy Milestone-based delivery. You pay for infrastructure that is delivered, tested, and validated, not for hours consumed. If you need AI systems that actually run in production, not just prompts, let's build them properly. Mike Niner Bravog AI Orchestration • Agentic Systems • AI Ops • Infrastructure Automation

- Diligent, alert, detail-oriented, great communicator: you will go BEYOND your goals - Woocommerce, Shopify, API coding, Mailchimp, Sendgrid, Hubspot, Zoho, Klaviyo, SEO - All-aspect Best Practices Ecommerce and Cold/Mass Email - 20+ Yrs Experience - US Based + Prestige Clients: LA Times, Universal Studios (UMG) - 1,200+ LinkedIn Skill Endorsements (challenge me on this!) Excellent job communication skills and habits, stellar writer. Determined and tireless seeking perfect results. Experienced enough to understand and fully deploy your goals. I know the questions to ask to uncover the hidden requirements of your project and deliver on those too. Your goals are made far more reachable as a result of my formidable tech skills (php, python, HTML, CSS, javascript) + my diligence, honesty, attention to detail, and my refusal to allow obstacles to your total success. Codex-compliant WP plugin coding. Mass email improved thru AI and exact metrics. All aspects of advanced e-commerce from AI-generated (but human-reviewed) code applied to email, to click funnels to landing pages, to followup drip campaigns and transactional emails. Don't allow a single tech detail to be overlooked, because that's money to you. FORTY-FIVE 5-Star Ratings By Upwork Clients: If you would do me a kindness at this point, scroll down to Work History and hit the up/down arrow icon to change the sort to 'Highest Rated' - you will see 45x 5-Star reviews of my work of the 100 or so jobs I've done here at Upwork. Formally trained as a 'Cyber Secure Coder' (CSC 110). I am death on security problems and understand PCI-compliance payment processing requirements, making difficulties in advanced payment processing simply disappear. I am commonly the guy they come to after hiring a less-experienced designer or studio whose work resulted in off-scope details of the project that broke as a result of 'unintended side effects'. If you need robust results that will persist (and not break later) then I am your guy. I do not allow any obstacles to total project success. I make communications with you a priority; phone, text, email. Experienced, so I'm fast without being reckless or shooting from the hip. I tend to report via a short email (or Slack, or Discord, Teams, Trello, etc) daily or nearly daily. Full stack developer from AI to Website to email, and brilliant copy writer who can deliver consumer *action*. I pay amazing attention to detail and am deeply committed to best practices... and results. As a writer, I minored in Journalism and I've crafted email templates and mass emails that get up to 68% open rate and 26% click rate (in the toughest of venues: political donations!). Prestige clients: Los Angeles Times, Universal Studios, Wedbush Securities, California Power Exchange, Crypto-Currency Blockchain SEC IPO plus nearly 100 political campaigns where everything has to be 100% right the first time (and be delivered fast). Email/SMS: scripting + API experience in Twilio, Klaviyo, Hubspot, Mailchimp, Sendgrid, SocketLabs, Zoho Twilio, NationBuilder and more. I am a determined and tireless campaigner who uses ALL digital channels in an *integrated* fashion.

I build production geospatial web platforms, real-time 3D maps, and spatial data stories in the browser using React, Three.js, WebGL, MapLibre/Mapbox, and PostGIS. Top Rated · 100% Job Success · $70K+ earned on Upwork · 18+ years across GIS, cartography, and web development. I turn complex spatial data into clear, interactive systems that combine technical rigour, performance discipline, and visual storytelling. Selected production work: • Environmental Intelligence Platform - multi-million entity geospatial SaaS (MapLibre, PMTiles, PostgreSQL, GraphQL) • 3D Reef Health - 15+ month marine spatial platform (MapLibre, Three.js, production hosting) • Inner Fire - real-time WebGL seismic globe (React 19, instanced rendering, live USGS feed) • IIB-recognised visual projects + #100DayMapChallenge (100 consecutive public geospatial builds) I work end-to-end: data preparation, architecture, implementation, optimization, and handoff. Typical engagements: • Interactive map modules and story maps (Mapbox/MapLibre, Wix/CMS embeds) • Real-time 3D spatial interfaces (Three.js / R3F / WebGL) • Geospatial dashboards and climate/environment platforms • Map performance and UX audits (consultation or fixed scope) Stack: • Frontend: React, TypeScript, Three.js, WebGL, GLSL, MapLibre GL / Mapbox GL • Data/GIS: PostGIS, PostgreSQL, QGIS, GDAL, PMTiles • Focus: digital twins, environmental and climate data, immersive spatial interfaces I am selective about projects where spatial accuracy, performance, and visual quality all matter. Portfolio: maptheclouds dot com

My name is Dante. For the past twenty years, I have developed a wide variety of skills to meet the needs of my clients. I have worked with SharePoint to help teams and companies become more efficient and utilize SharePoint in ways that increase productivity. I have created and or manipulated Master Pages, page layouts, ticketing systems, and websites. I have used a full range of tools including PowerApps, Power Automate, REST APIs, and other solutions to bridge the gap on what is possible within the platform. I have been using SharePoint since version 2007, but the majority of my time recently has been spent creating and designing solutions in SharePoint 2019 and Online. But SharePoint isn’t the only thing I develop in, I work on designing and developing sites in WordPress. One of the recent sites I created and developed was virtualvelocity.com. I am a rare breed that can code and design. This enables me to make sure that websites not only function well but look great. I use Photoshop, Figma, and Illustrator to create the graphics and layouts. Then I use JavaScript, PHP, and other languages to bridge the gap between what is possible in WordPress. I also create and design flyers, banners, social media ads, booth graphics, and much more in Illustrator and Photoshop. Besides my skills, I also have management and consultant experience. My management experience includes managing both teams and projects using Agile methodologies and managing creative teams to produce content such as videos, graphics, websites, and written content. I have also been a consultant for companies like Abbott Labs, Verizon, and Caregility. As you have read, I have a Swiss army knife of skills and experience to help clients get the results that they are looking for. I look forward to hearing from you.

Senior Excel VBA Automation Specialist | Business Process Expert | EN/JP Support Professional Summary I help businesses automate Excel workflows, eliminate manual work, and build reliable VBA tools that improve efficiency and accuracy. With over 20 years of experience in Excel and Access VBA automation and business process optimization, I have developed automation tools for audit firms, trust banks, manufacturing companies, and public institutions. My solutions focus on practical usability, reliability, and long-term maintainability in real business environments. Why Clients Choose Me • Reliable and detail-oriented delivery • Strong experience in business automation • Practical solutions designed for real operations • English–Japanese communication support • Long-term maintainable tool design • I am highly reliable, detail-oriented, and always committed to delivering high-quality solutions. What I Can Help You With • Excel / Access VBA Automation •  Business Automation Tool Development & Maintenance •  Legacy System Modernization •  Microsoft Teams Data Integration •  API (JSON) Data Processing •  Reporting & Dashboard Creation •  Data Migration & Transformation •  English-Japanese Translation Key Project Experience • Developed 23+ automation tools for international audit firms to process tax and accounting data • Designed and built 8 project management and progress analysis tools using Microsoft Teams data • Created scheduling systems for home healthcare services (JSON → Excel) • Developed and maintained automation tools for trust banks and asset management companies • Led data migration projects from SAS Enterprise Guide to SPSS Modeler • Managed global eBay sales (300+ products, 99% positive feedback) Technical Skills • Programming / Scripting • Excel VBA, Access VBA, VB6, HTML • Database • SQL Server, MySQL, Oracle (ODBC), Azure SQL • Data & Analytics • SPSS Modeler, SAS Enterprise Guide, DataSpider, Power Query • Platforms & Tools • Microsoft Teams Integration, API (JSON) Work Policy •  Response within 24 hours •  Clear and professional communication •  On-time delivery •  Detailed documentation • Long-term support Languages • Japanese: Native • English: Fluent / Business Level (Experience in negotiations, technical communication, translation, and overseas projects)

Hi If you are looking to implement AI in your business, automate workflows, or build a scalable SaaS platform, you are in the right place. With over 24 years of experience, we help companies design and build AI-powered systems that improve operations, reduce manual work, and create long-term business value. We do not just build features. We build solutions that fit into your business. AI Solutions and Automation We help you leverage AI in a practical, business-focused way: • Automate repetitive processes using AI • Integrate GPT and LLMs into your existing systems • Build AI chatbots and internal assistants • Create AI-powered document processing and summaries • Develop AI knowledge bases for your team • Generate insights, reports, and predictions using AI • Build AI agents that perform real tasks Most AI projects fail because they are not integrated into actual workflows. Our focus is to make AI work within your business systems. SaaS and Business Systems If you are building or scaling a SaaS product, we bring strong experience in: • Multi-tenant SaaS architecture • Subscription and billing systems • Workflow-driven platforms • B2B and MIS systems • Scalable cloud applications We have built over 250 business applications and 10+ SaaS platforms. We are also the creators of PrintPLANR, a SaaS-based Print MIS platform used by businesses globally. This gives us hands-on experience in building and running real products. Zoho Implementation and Customization As Zoho Authorized Partners, we help you get the most out of Zoho: • Choosing the right Zoho applications • End-to-end implementation across departments • Customizing Zoho to match your workflows • Integrating Zoho with other systems • Automating business processes We have worked with healthcare, legal, manufacturing, logistics, travel, and service-based businesses. Development Capabilities • Web applications (CRM, ERP, MIS, workflow systems) • Mobile applications (native and cross-platform) • API integrations and system connectivity • Cloud-based platforms • Application migration and modernization Business Intelligence and Data • Dashboards and reporting (Power BI, Tableau, and others) • Data visualization and insights • AI-driven analytics and forecasting Project Approach We follow a structured approach to ensure clarity and successful delivery: • Understand your business process and goals • Identify opportunities for AI and automation • Define a clear solution architecture • Build in phases with regular feedback • Ensure scalability and long-term maintainability We focus on building systems that are reliable, easy to use, and aligned with your business operations. Best Fit Projects We are a good fit if you are: • Looking to implement AI in real business workflows • Planning to build or scale a SaaS product • Using or planning to use Zoho across your organization • Looking to automate operations and reduce manual work • Seeking a long-term technology partner rather than a one-time developer Engagement Models • Fixed cost projects • Time and material • Dedicated team or long-term support Why Clients Choose Us • Strong understanding of business processes • Ability to combine AI with real systems • Experience building scalable SaaS platforms • Structured and reliable execution • Long-term support and partnership approach Next Steps If you already have a requirement, feel free to share details and we can suggest the best approach. If you are still exploring, we can help you define the right architecture, technology stack, and roadmap before development begins.

With 𝟭𝟴+ years of experience building scalable web applications, enterprise platforms, and cloud-based solutions. I have helped 𝟏𝟎𝟎+ businesses develop high-performance websites, SaaS platforms, APIs, and cloud infrastructures using modern frameworks and DevOps practices. My expertise covers backend development, frontend frameworks, cloud infrastructure (AWS), and Linux server management, allowing me to deliver complete end-to-end solutions. 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 𝗜 𝗛𝗮𝘃𝗲 𝗪𝗼𝗿𝗸𝗲𝗱 𝗪𝗶𝘁𝗵 ✔ SaaS Platforms ✔ E-commerce Systems ✔ Enterprise Web Applications ✔ FinTech & Payment Integrations ✔ Government Systems ✔ Cloud Infrastructure 𝗪𝗵𝗮𝘁 𝗜 𝗖𝗮𝗻 𝗛𝗲𝗹𝗽 𝗬𝗼𝘂 𝗪𝗶𝘁𝗵 ✔ Custom Web Application Development ✔ Drupal Theme and Custom Development ✔ SaaS Platform Development ✔ API Development & Integration ✔ Enterprise Backend Systems ✔ AWS Cloud Architecture & Deployment ✔ DevOps & CI/CD Implementation ✔ Server Setup & Performance Optimization ✔ Saudi ZATCA E-Invoicing Integration ✔ Bug Fixing, Maintenance & System Optimization 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 ✔ PHP Core Development ✔ Laravel Framework ✔ Yii2 Framework ✔ CodeIgniter ✔ Elixir ✔ Phoenix Framework ✔ Java 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 ✔ JavaScript ✔ jQuery ✔ AngularJS ✔ React.js ✔ HTML5 / CSS3 ✔ AJAX 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀 ✔ MySQL ✔ Aurora ✔ Oracle ✔ DynamoDB 𝗖𝗹𝗼𝘂𝗱 & 𝗗𝗲𝘃𝗢𝗽𝘀 (𝗔𝗪𝗦) Experienced with multiple AWS services including ✔ EC2 (Elastic Compute Cloud) ✔ SES (Simple Email Service) ✔ RDS (MySQL, Aurora, Oracle) ✔ S3 & Glacier ✔ Route 53 ✔ IAM Role Management ✔ SNS & SQS ✔ AWS Lambda ✔ ElastiCache 𝗜𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲 & 𝗦𝗲𝗿𝘃𝗲𝗿 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁 I also fully manage Linux servers for production environments. ✔ Ubuntu ✔ CentOS ✔ Web hosting setup ✔ Security & performance optimization ✔ Deployment automation 💡 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 𝗠𝗲 ✔ 18+ Years of Development Experience ✔ Strong Communication & Problem Solving ✔ Clean, Scalable, Maintainable Code ✔ DevOps + Development Expertise ✔ Reliable Long-Term Support 📩 If you are looking for a reliable senior developer to build or scale your platform, feel free to reach out. You will get high-quality work and full dedication to your project, In Sha Allah.

I'm a full time freelancer and I specialize in automation development (& general backend dev) with Python, NodeJS and occasional Shell Scripting. I also do front-end web development - you can checkout my other Specialized profile for this. I have good experience in building backend systems, fully automated workflows, etc. - local & distributed/on-the-cloud with AWS/GCP/Azure. Total Dev Experience: 14+ years Experience & Tech Stack - Backend: - Python, Node.js, Elixir, Bash Script .. some Java, PHP & PERL - REST API Development (Express.js, Flask, Django), optionally with GraphQL - Middlewares: RabbitMQ, Redis - Cloud Integrations/Deployments with AWS & GCP - Serverless Functions: AWS Lambda, Google Cloud Functions, Netlify Functions - Databases: MySQL, PostgreSQL, MongoDB, DynamoDB (with or without ORMs) - 3rd Party API Integration (Google API, Facebook API, Twilio API, etc.) - Docker Frontend: - Vue.js (Nuxt, Quasar, Gridsome) - Webpack, Sass/Scss/Less, ES6 Javascript - Serverless/JAM Stack development & end-to-end setup Automation Scripting: - PDF Parsing with PDFMiner, Tabula - Web Scraping with plain HTTP requests, Selenium, Puppeteer/Headless Chrome - High concurrency distributed automation system development with Celery, RabbitMQ & Redis .. optionally deployed with Docker - eMail/SMS/Twilio/Telegram Notifications & Integration (read/send) - Image OCR with Tesseract - Auto-Betting Workflows - Auto-Purchasing Workflows, etc. - Quick one-off shell scripts I always start with proper tasks & estimates and will be consistent with regular updates. This way there will be no surprises in cost/time and you'll be up-to-date with the progress without you having to chase around the freelancer. When delivering my code, I’ll make sure that it is well designed, professionally written to the highest quality & efficiency with solid, re-usable, following OOPS concepts, proper commenting & documenting. Future developers (if any are hired after me for maintenance/updates) can go through the code and update/refactor with ease - I know how it feels as a developer to read bad code and attempt to do anything on top of it. I also share screencasts to show the setup & execution of the code or a README file. I apply only to jobs which relies on my skill set and which I consider I can finish no matter what - implying I already have a high level mental plan on approaching/solving the problem described there. The rest I mostly leave it to the regular invites. So yeah, send me an invite to your job, we can discuss and take it forward from there. Availability and communication will never be a problem as I'm always almost available for a quick chat/call. You'll know my quality when you work with me. Looking forward to many great work experiences.

Full Stack Web App Developer with Expertise in providing complete solutions from design to development & deployments. 🌟OpenAI, Webgl, Three.js, MERN, Svelte, Next.js, Supabase, Firebase, DevOps & Seamless Deployments ✨Your partner from IDEATION to DEPLOYMENT and beyond. Hi there! I’m an expert Full Stack Web App Developer with 16+ years of hands-on experience in building modern, scalable applications using the various stacks (MongoDB, Firebase, Supabase, Express.js, React.js, Node.js) and beyond. Whether you're looking for a dynamic front-end experience, a robust backend architecture, or seamless DevOps and deployment processes, I’ve got you covered. ✨ What I bring to the table: 💻 Full Stack Mastery: Proficient in building complete applications from scratch, leveraging React, Next.js, Angular for front-end, and Node.js, Nest.js, and GraphQL on the back-end. 🗃️ Database Expertise: Strong experience with MongoDB, Firebase, Supabase, PostgreSQL, MySQL, and optimised database management using TypeORM and Mongoose. ⚙️ DevOps and Automation: Specialising in CI/CD pipelines, automated deployments with AWS, Azure, Docker, Kubernetes, and Firebase, ensuring reliable, efficient, and secure apps. 🚀 Cutting-Edge Technologies: Experience with top new tech including Web3, Solana, and Blockchain integration for future-ready applications. 🎨 UI/UX Excellence: I craft intuitive and responsive UIs using frameworks like Tailwind CSS, MUI, and Chakra UI to provide users with sleek, modern experiences. 🌟 What you can expect from working with me: 🎯 Tailored Solutions: I’ll understand your vision and turn it into a fully-functional, high-performance web application. 🔧 End-to-End Development: From concept to deployment, I handle everything, including integrations with payment systems like Stripe and handling secure APIs. 🚢 Deployment Expertise: Whether deploying to AWS, Azure, or Firebase, I ensure your application is live, secure, and scaling effortlessly. 💼 Tools & Technologies: Front-end: D3, Three.js, Babylon, React, Next.js, Angular, SCSS, Tailwind CSS Back-end: Node.js, Express.js, Nest.js, GraphQL, Python, Django, Php, Laravel, Wordpress Databases: MongoDB, PostgreSQL, MySQL, Firebase, Supabase DevOps: AWS, Azure, Docker, Kubernetes, Firebase Web3: Solana, Webjs, EVM development CI/CD & Automation: Jenkins, GitLab CI, Docker, Kubernetes Let’s create something exceptional together—whether it's your next SaaS product, e-commerce platform, or a cutting-edge blockchain app. 🌟🌟 Reach out now, and let’s discuss how we can make your vision a reality!