I develop customized web solutions for companies and individuals. Need a website for managing various aspects of the business process? Want to automate tedious repetitive tasks? Want to control your staff and their actions? Need to get an informative monitoring system and reports? Want to simplify your everyday routine? Got the idea of a great new feature and need the implementation? Want to bring order to the tons of data arriving from dozens of sources? Want to get your own ERP system? You came to the right place. I'll be happy to help. Tech stack: HTML, CSS, PHP, Javascript, jQuery API integration, Responsive design, JS animation Data visualisation: Highcharts, Highmaps, Chart.js and other JS and jQuery-based solutions Relational databases: SQL (MySQL, MariaDB, MS SQL), Microsoft Access General info: I've got twenty years of experience in programming, the first website made from scratch in 2002. I work as a full-stack web developer since 2012. I'm interested in working on front-end web solutions, UI/UX as well as on back-end solutions. Programming experience in details: 2000 - 2012 MS Access - number of solutions created: * Central management system for a trucking company (40+ vehicles) - working time management, payrolls, mileage, fuel management, printing out waybills, work with customers - invoices, debt, daily/weekly/monthly reports, etc. That was the central managing and dispatching tool. * Central dispatching tool for bus company (20+ regular city buses). Waybills, schedule, working hours, payrolls, fuel management, income, expenses, analysis, and reports. * Spare parts inventory management system for bus company's warehouse. * CMR management system for Swedish bus-reseller company. The tool was intended for creating and printing out CMR forms on the blank form on the matrix printer. * Main data processing tool for the Spare Parts E-shop. Takes data from about 150 sources (suppliers), makes local processing, then prepares and exports to website. * Lot of smaller customized data-processing solutions. * Work as a programmer in Sweden for about five months in total. Web-design * Spare Parts E-shop was created from scratch in 2002, and implemented on Perl CGI + MySQL. The second version was released in 2010 on PHP + MySQL. The current (third) version is in operation since 2021. It is AJAX-driven and responsive. * Website for the Swedish bus reseller. Multilingual solution (Swedish, English, Russian, Ukrainian). PHP + MySQL. * Website for the Swedish football club. Multilingual solution. PHP + MySQL. * Website for the gearbox repair service/sales company. 2012 - present time * Independent freelancer. Dozens of web projects and solutions were implemented. All main techniques/skills are listed at the beginning of this overview. Please feel free to request a relevant work example. Languages: * English - fluent * Russian - native/bilingual * Ukrainian - native/bilingual Location: Ukraine (UTC + 3) I'm also available in the evening hours for collaboration with colleagues in the US and in the morning hours for connecting with the Pacific region.

I help businesses turn ideas into fully functional, production-ready applications powered by AI, automation, and modern full-stack architecture. With 9+ years of experience building scalable web systems, I bridge two worlds: 𝗔𝗜 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻: LLMs, RAG pipelines, and intelligent automation that make your products smarter and more efficient. 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: Robust, secure, and maintainable apps built with React, Next.js, Node.js, and Express — connected to cloud and database layers that scale. Whether it’s embedding AI into an existing platform or developing a SaaS product from scratch, my goal is simple deliver technology that performs flawlessly, grows with your business, and feels effortless to use. ⚙️ 𝗖𝗼𝗿𝗲 𝗖𝗮𝗽𝗮𝗯𝗶𝗹𝗶𝘁𝗶𝗲𝘀: • AI / LLM Integration: LangChain, OpenAI GPTs, RAG, vector databases (Pinecone, FAISS), custom AI agent workflows. • Full Stack Web Development: React, Next.js, Node.js, Express, REST & GraphQL APIs. • Databases & Cloud: MongoDB, PostgreSQL, AWS, Firebase, Vercel, Docker, CI/CD pipelines. • Automation & Efficiency: AI workflows, API automation, and system performance optimization. • UI/UX & Frontend Polish: Pixel-perfect UI using Tailwind CSS, responsive design, and high-speed rendering. 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗛𝗶𝗿𝗲 𝗠𝗲: ✅ I focus on clarity and delivery speed, always keeping communication crisp and transparent. ✅ I’ve built AI-powered SaaS platforms, business automation tools, and scalable enterprise apps. ✅ I treat every project as a long-term system, not a quick build, ensuring performance, maintainability, and results. 🧩 𝗣𝗿𝗼𝗷𝗲𝗰𝘁 𝗧𝘆𝗽𝗲𝘀 𝗜 𝗟𝗼𝘃𝗲 𝗪𝗼𝗿𝗸𝗶𝗻𝗴 𝗢𝗻: • AI-Integrated SaaS Platforms. • Smart Dashboards with Real-Time Data. • LLM-Powered Chat or Search Systems. • Business Automation and Workflow Apps. • Scalable Web Applications for Startups and Enterprises. 🤝 Let’s Build Something Powerful If you’re looking for a reliable developer who understands both AI intelligence and software engineering, let’s talk. I’ll help you go from concept to a working product fast, clean, and scalable. 💡 Available Now – open for part-time or full-time collaborations.

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

I’m a senior backend and AWS cloud engineer with 18 years of experience building and operating high-volume, real-time systems in ad serving, analytics, and fraud/anomaly detection. Much of my career has been in small startups as the sole or lead engineer, responsible for architecture, production stability, and delivery. I specialize in troubleshooting and stabilizing production systems (performance, reliability, scaling), then improving or modernizing them. I’m comfortable diving into unfamiliar codebases, finding bottlenecks, and delivering practical fixes. Core stack: AWS (Auto Scaling, load balancing, routing/CDN, storage), Perl/Python/Node.js, MySQL, Redis/Valkey counters/rate limiting, APIs, CI/CD.

Hi 👋 I'm Eduardo, a dedicated and experienced Front-End Developer with over 7 years of experience working with brands and corporations of all sizes. My MO is to stay critical, meet deadlines and maintain global coordination with my clients or their teams ensuring that we achieve the best results possible. I am highly skilled in modern technologies such as: ‣ Javascript ‣ Typescript ‣ React ‣ Next.js ‣ TailwindCSS ‣ Node.js ‣ Bootstrap ‣ Sanity CMS ‣ Storyblok ‣ Dato CMS I also have very good experience with tools such as: ‣ Git ‣ Figma ‣ Vercel ‣ Framer Motion ‣ AdobeXD ‣ Firebase My expertise in building complex UI on web applications enables me to deliver solutions that are both visually stunning and highly efficient. Let's work together to take your project to the next level!

- 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 provide creative, high-tech solutions to your system integration and software development needs. I have broad experience in Wordpress, Linux, Java, Apache, MySQL and PHP / Perl. (Also known as the LAMP stack.) I adhere to industry best practices, and bring to your projects the disciplines of MVC framework design patterns such as CodeIgniter in PHP, Git version control, and project management systems such as Jira, Bitbucket, and Github. I can either work alone, or in collaboration with your existing development team. My projects have been as lead developer or team member alike with great success.

I've done *nix systems administration, full stack web development, and systems architecture work for over twenty years. I've been a big advocate for code quality and solid testing practices. Also, I've been known to dig in on hard problems where others have not.

I help companies build reliable AI-powered automation systems, browser automation platforms, and scalable SaaS infrastructure. Over the past 10+ years, I have designed and developed production systems involving: - AI agents & LLM integrations - Browser automation (Playwright/Puppeteer/Selenium) - Web scraping & anti-bot systems - SaaS platforms - FastAPI & Python backend systems - AWS serverless infrastructure - Workflow automation - CRM & API integrations - Data pipelines and large-scale processing I specialize in solving difficult engineering problems where stability, scalability, and reliability matter. My experience includes: - Large-scale browser automation systems - AI-powered SaaS platforms - High-volume web scraping infrastructure - Workflow and CRM automation - Cloud-native AWS architectures - Real-time automation systems - Dockerized production environments - API orchestration and integrations - RAG and LLM-powered applications Technical stack: Python, FastAPI, Playwright, Selenium, AWS Lambda, DynamoDB, Docker, Kubernetes, PostgreSQL, MongoDB, Redis, OpenAI APIs, LangChain, Serverless Framework, React, Node.js I am particularly effective on projects involving: - unstable automation systems - scraping infrastructure - AI integrations - browser reliability engineering - SaaS architecture - scaling and optimization - workflow automation - production debugging I approach projects as long-term engineering partnerships and focus on delivering systems that are maintainable, scalable, and robust in production.

Full-stack developer with +25 years of experience based in Southern California. I can help you to: - upgrade and maintain your legacy Rails, Flask, Django, Odoo, PHP, React app - upgrade Heroku stack & database with minimal downtime, - implement complex D3 visualizations, refactor complex React / Vue codebase, - add/improve test code coverage in your Rails, Flask, Django, PHP, React app, - create v1 of your business idea