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Mykhailo D.

Lviv, Ukraine

$38/hr
4.9
86 jobs

โญ๏ธYour ๐‘๐„๐‹๐ˆ๐€๐๐‹๐„ tech partner who wonโ€™t miss ๐ƒ๐„๐€๐ƒ๐‹๐ˆ๐๐„๐’โฐ,wonโ€™t break the ๐๐€๐๐Š ๐Ÿ’ฐ and will deliver a ๐’๐‚๐€๐‹๐€๐๐‹๐„ ๐’๐Ž๐‹๐”๐“๐ˆ๐Ž๐๐Ÿ“ˆthat wonโ€™t need to be rebuilt from scratch later๐Ÿ”ง ๐Ÿ’ก 130+ production-grade products delivered (SaaS, MVPs, AI systems, marketplaces) ๐Ÿ’ฐ $16.5M+ revenue generated by client products ๐Ÿ‘ฅ 157K+ active users powered by systems I built โšก 1M+ API requests/month at 99.9% uptime ๐Ÿš€ MVP โ†’ production in 2โ€“6 weeks, architected to scale from day one ๐Ÿ”ฅ WHAT I DO You're building a SaaS, MVP, or AI-powered product. You need a Full Stack Developer who can own React frontend and Node.js backend end-to-end, ship in weeks (not quarters), and write code your future team won't throw away. That's what I do. Early-Stage MVP, Productionizing a prototype, Scaling a Live SaaS Platform, or Legacy Codebase rebuild - I've built this on React, Next.js, Node.js, TypeScript, Supabase, PostgreSQL, AWS over 10+ years. ๐Ÿ”ฅ ROLES I TAKE ON (10+ YEARS EXPERIENCE) โœ” Full Stack Developer / Full Stack Engineer โ€” 40+ end-to-end SaaS platforms (React + Node.js), 10+ years โœ” Frontend Developer / Front-End Developer โ€” 30+ production UI builds, 10+ years โœ” React Developer / React.js / ReactJS Developer โ€” scalable React apps since 2015, 10+ years โœ” Node.js / NodeJS Developer / Backend Developer โ€” 25+ APIs, 1M+ req/month, 10+ years โœ” Vue.js Developer / Nuxt.js Developer โ€” 8+ Vue projects, 8+ years โœ” Next.js Developer / NextJS Developer โ€” 15+ SSR/SSG SaaS platforms, 7+ years โœ” TypeScript Developer / JavaScript Developer โ€” 50+ typed and untyped JS codebases, 10+ years โœ” SaaS Developer / Web App Developer โ€” MVP to scale, 10+ years โœ” Lead Frontend Engineer / Senior Full Stack Engineer โ€” team leadership on 18+ projects ๐Ÿ”ฅ INDUSTRIES I SERVE โš–๏ธ For LegalTech founders โ€” 6+ Case Management Systems, Document Workflows, Client Portals, Compliance SaaS ๐Ÿฅ For Healthcare & MedTech โ€” 8+ Patient Platforms, Telehealth, HIPAA-Compliant data, Clinic Management SaaS ๐Ÿ“ฆ For Logistics & supply chain โ€” 5+ Logistics Platforms, real-time tracking (sea/air/truck), Project44, INTTRA, EDI ๐Ÿ›’ For Marketplace & e-commerce โ€” 15+ Multi-Vendor Marketplaces, B2B & Two-Sided Marketplace, Stripe, bidding, complex search ๐Ÿค– For AI startups โ€” 12+ AI-Powered products: OpenAI / Claude API / LLM, RAG Chatbots, AI Agent Platforms, vector DBs, FastAPI, browser extensions ๐Ÿ“ For No-code & enterprise SaaS โ€” 10+ Form Builders, Admin Dashboards, Internal Tools, Microservices, Multi-tenant ๐ŸŒ For Media, AdTech & publishing โ€” 6+ Publisher Platforms, CMS, payment gateways, Analytics Dashboards ๐Ÿ  For Real estate & PropTech โ€” Property Listings, Bidding & Auction systems, Agent Dashboards ๐Ÿ’ฐ For FinTech founders โ€” Stripe Connect, subscription billing, multi-currency, KYC, Fintech MVP ๐Ÿ“š For EdTech โ€” course delivery, student dashboards, progress tracking, live sessions ๐Ÿ”ฅ RESULTS I DELIVER โœ” MVP โ†’ production in 2โ€“6 weeks, 35% fewer bugs, 5โ€“8 weeks shorter delivery cycle โœ” Frontend: LCP under 1.5s, Lighthouse 90+, bundle reduced 40%, 18โ€“27% engagement uplift โœ” Backend: 1M+ API requests/month, 99.9% uptime, 40โ€“60% lower latency โœ” Database: 3โ€“5x faster response, 70% less DB load; 90% faster workflows, 65% fewer back-office actions โœ” +30% conversion on React / Next.js apps; 15โ€“22% better marketplace lead quality โœ” 15,000+ shipment operations/month, 2,423+ completed orders, 30,000+ healthcare users โœ” 20+ SaaS MVPs launched, 47% fewer bugs in legacy modernization ๐Ÿ”ฅ HOW I WORK I think like a product engineer, not a code-monkey. Before writing a line, I align on the business outcome - who the user is, what they pay for, where the product needs to be in 6 months. Then I ship in weekly demos and stay available on Slack / Telegram for fast turnaround. Typical cycle: 1๏ธโƒฃ Discovery & scoping (2โ€“3 days) โ€” define MVP boundary 2๏ธโƒฃ Architecture โ€” clean foundations, scalable schema, right stack 3๏ธโƒฃ Weekly sprints with demos โ€” progress every week 4๏ธโƒฃ Production launch โ€” CI/CD, monitoring, error tracking 5๏ธโƒฃ Post-launch support โ€” most clients keep me on ๐Ÿ”ฅ TECH STACK Frontend: React.js, ReactJS, React Hooks, Next.js, NextJS, Vue.js, Nuxt.js, TypeScript, Redux, Zustand, Tailwind CSS, shadcn/ui Backend: Node.js, NodeJS, Express.js, NestJS, Python, FastAPI, REST, GraphQL, WebSockets Database: PostgreSQL, Supabase, MongoDB, MySQL, Redis, Prisma Supabase: Auth, Row-Level Security, Edge Functions, Realtime, Storage AWS: Lambda, S3, RDS, EC2, CloudFront, API Gateway, SQS, SNS, Cognito, ECS Other cloud: Firebase, Vercel, Netlify, Cloudflare AI / ML: OpenAI API, Claude API, LangChain, RAG, RAG Chatbot, AI Agent, Computer Vision Payments: Stripe Subscriptions, Stripe Connect, Stripe Checkout, Stripe Billing, PayPal Integrations: Twilio, SendGrid, Resend, Slack API, Telegram Bot API, EDI, Project44, Mobile: React Native, React Native Expo, iOS / Android ๐Ÿš€ Building a SaaS, MVP, marketplace, or AI-powered product? Click "Invite" or "Hire" and send the brief.

  • React Native
  • React
  • HTML
  • CSS
  • HTML5
  • Node.js
  • JavaScript
  • Bootstrap
  • jQuery
  • CSS 3
  • Vue.js
  • Nuxt.js
  • Front-End Development
  • Next.js
  • MongoDB
  • Redux
  • TypeScript
  • React Bootstrap
  • Python
  • Software Development
Rab N.

Sheikhupura, Pakistan

$15/hr
5.0
3 jobs

Full Stack Web Developer | Laravel Developer | React.js Developer | Vue.js Developer | AWS Expert I am a dedicated Full Stack Developer and Web Developer specializing in PHP Laravel, React.js, Vue.js, and AWS cloud solutions. With expertise in building scalable web applications, RESTful API development, and modern frontend interfaces, I deliver high-quality solutions for businesses worldwide. Backend Development: โ€ข PHP & Laravel Framework - RESTful API development, MVC architecture, Eloquent ORM, API development โ€ข Backend Development with Laravel for web application development โ€ข Database Design & optimization (MySQL, PostgreSQL) โ€ข Server-side logic & business layer development Frontend Development: โ€ข React.js Development - Component-based architecture, Hooks, Redux, Context API โ€ข Vue.js Development - Vuex, Vue Router, Composition API โ€ข JavaScript Developer - ES6+, AJAX, jQuery for dynamic web applications โ€ข HTML5, CSS3, Bootstrap Developer - Responsive Design & mobile-first approach โ€ข Frontend Development for modern web applications Cloud & DevOps: โ€ข AWS Developer - EC2, S3, RDS, Lambda, CloudFront deployment โ€ข AWS cloud solutions for scalable web application development โ€ข Server management & optimization What I Deliver: โ€ข Full Stack Web Development solutions โ€ข Laravel Developer services with React.js/Vue.js frontend โ€ข RESTful API Development and integration โ€ข Responsive Design with Bootstrap โ€ข E-commerce Development solutions โ€ข Web Application Development from concept to deployment โ€ข Database Design and optimization โ€ข Custom web application development My Approach: As a Full Stack Developer, I write clean, well-documented code following industry best practices. Every web application development project is: โ€ข Scalable and maintainable โ€ข Secure and optimized for performance โ€ข Delivered on time with clear communication โ€ข Built with client satisfaction as top priority Why Choose Me: โ€ข Fast response time and professional communication โ€ข Attention to detail and quality assurance โ€ข Proven track record as Laravel Developer and React.js Developer โ€ข Continuous learning to stay updated with latest technologies โ€ข Available for both short-term and long-term collaborations Ready to help you with your web application development needs - whether it's a startup MVP, enterprise solution, or e-commerce development. Let's discuss your project and turn your vision into reality! Keywords: Full Stack Developer, Laravel Developer, React.js Developer, Vue.js Developer, PHP Developer, AWS Developer, Web Developer, RESTful API, API Development, Frontend Development, Backend Development, Web Application Development, Responsive Design, E-commerce Development, Database Design, JavaScript Developer, Bootstrap Developer

  • React
  • PHP
  • Laravel
  • Vue.js
  • JavaScript
  • AWS Development
  • MySQL
  • RESTful API
  • Git
  • WordPress
  • Full-Stack Development
  • Web Development
  • Back-End Development
  • Front-End Development
  • API Development
Sebastian B.

Iasi, Romania

$40/hr
5.0
10 jobs

AI Engineering Lead and PhD researcher in AI/ML, certified in Claude by Anthropic. I design and ship production systems built around Claude: agents, RAG pipelines, and automations that actually make it to deployment Over the past 7 years I've helped more than 20 companies put AI into production across the US, Europe, and the Middle East. I've led engineering teams at startups large and small, and I bring a consistent track record as a high performer on the work I take on I post regularly on Medium, X, and YouTube on the latest in AI, ML, and tech, which keeps me on top of how fast the field moves, with an audience of over 10,000 across platforms. I share this work publicly partly because teaching a thing is the best test of whether you understand it What I build: - RAG chatbots and agents over your documents, PDFs, Notion, and knowledge bases - LLM fine-tuning on your domain data - Workflow automations that replace 40โ€“80% of manual operations - Solution architecture, so you commit to the right stack the first time - Recovery work on stalled or underperforming AI projects Send over the project and I'll reply the same day with a plan, a clarifying question, or an honest pass

  • Artificial Intelligence
  • Mobile App
  • Desktop Application
  • App Development
  • Machine Learning
  • AI Agent Development
  • AI Audio Generation
  • AI App Development
  • AI Audio Generator
  • AI Bot
  • AI Chatbot
  • Python
  • LangChain
  • LLM Prompt Engineering
  • MLOps
Dmytro A.

Kyiv, Ukraine

$35/hr
4.8
90 jobs

๐Ÿ“Œ ๐——๐—ฒ๐—น๐—ถ๐˜ƒ๐—ฒ๐—ฟ๐—ฒ๐—ฑ ๐˜€๐˜‚๐—ฐ๐—ฐ๐—ฒ๐˜€๐˜€๐—ณ๐˜‚๐—น ๐—ฝ๐—ฟ๐—ผ๐—ท๐—ฒ๐—ฐ๐˜๐˜€ ๐—ณ๐—ผ๐—ฟ ๐—จ๐—ก๐—œ๐—Ÿ๐—˜๐—ฉ๐—˜๐—ฅ, ๐——๐—ข๐—ฉ๐—˜ ๐—ฎ๐—ป๐—ฑ ๐——๐—›๐—Ÿ. My clients get high-performance, SEO-optimized digital products and ๐Ÿ“Š ๐˜‚๐—ฝ ๐˜๐—ผ 30% ๐—น๐—ผ๐˜„๐—ฒ๐—ฟ ๐—ถ๐—ป๐—ณ๐—ฟ๐—ฎ๐˜€๐˜๐—ฟ๐˜‚๐—ฐ๐˜๐˜‚๐—ฟ๐—ฒ ๐—ฐ๐—ผ๐˜€๐˜๐˜€. Glad to build yours next! ๐Ÿ“ Client-oriented Full Stack Developer (React Node, React Next.js, MERN Stack) ๐Ÿ“ Headless CMS expert (Strapi, Payload, Sanity, Contentful, Storyblok, Directus, Prismic etc). ๐Ÿ“ MSc in Computer Science ๐Ÿ“ 13+ years in the field ๐Ÿ“ Thinking like a product owner, not just a coder ๐Ÿ“ My clients turn into long-term partners ๐Ÿšซ No short-term gigs, quick fixes, or rush jobs please ๐—–๐—Ÿ๐—œ๐—–๐—ž ๐— ๐—˜๐—ฆ๐—ฆ๐—”๐—š๐—˜ to get a detailed project review ๐Ÿ“ฉ ๐— ๐˜† ๐—ด๐—ผ๐—ฎ๐—น ๐—ถ๐˜€ ๐˜€๐—ถ๐—บ๐—ฝ๐—น๐—ฒ: build fast, scalable and maintainable products that support your business growth, while respecting your timelines and budget. ๐ŸŽฏ Need an expert Full stack React developer, Nextjs developer, or Full Stack developer React Node for SEO-ready products? Iโ€™ve worked as a full stack react developer with react.js since its early days - before official SEO and server-side rendering existed. I built custom SSR pipelines as a Frontend React developer to make react.js apps SEO-friendly and blazing fast. Today, as an experienced Full stack React developer and Next.js developer, I deliver instant indexing, strong Core Web Vitals, and fast Time-to-Interactive. My expertise includes SEO engineering - schema, automated sitemaps, pre-rendering, lazy hydration, and incremental regeneration - powered by next.js and react.js, strong frontend react developer expertise ๐—ง๐—˜๐—–๐—›๐—ก๐—ข๐—Ÿ๐—ข๐—š๐—œ๐—˜๐—ฆ ๐—œ ๐—จ๐—ฆ๐—˜ โžก๏ธ REACT NEXT.JS Next.js and react.js are my go-to tools as a full stack developer React Node for hybrid rendering, ISR, and fast performance - as for a Full stack React developer working with headless CMS like Strapi cms, Payload, Sanity and CDN caching. I also work as a Frontend React developer and Front end developer when the project needs precise UI implementation. - Astro cms - Next.js - Gatsby - TypeScript โžก๏ธ JAMSTACK & STATIC SITE DEVELOPMENT I use the most efficient frameworks for your needs: Astro / Gatsby / Qwik / Hugo / 11ty / Jekyll / Zola / Remix / SvelteKit / Next / Nuxt / Docusaurus / Docusify / MkDocs / Slate / Sphinx / GitBook. โžก๏ธ HEADLESS CMS DEVELOPER Self-hosted / Open-source: Strapi, Directus, Payload CMS, KeystoneJS, Ghost Git-based / Static-site friendly: Decap CMS, TinaCMS API-first SaaS: Sanity, Contentful, Contentstack, Kontent.ai, DatoCMS, Agility CMS, Hygraph Visual Builders: Storyblok, Prismic, Builder io, ButterCMS, Cosmic CMS I integrate headless CMS with next.js and react.js frontends as a Frontend React developer using live previews, API hooks, and on-demand revalidation. Many of my platforms are built with react nextjs, react typescript, Headless cms, and Full Stack Developer React Node architecture. โžก๏ธ NODE.JS & CLOUD BACK-END As a full stack developer React Node I work end-to-end, handling API and backend setups that power react.js next.js node.js apps: Frameworks: NestJS, Supabase, Firebase, Clerk Databases: PostgreSQL, MongoDB Queues & Caching: Redis, Apache Kafka Serverless & Search: AWS Lambda, Elasticsearch I build full stack developer React Node Next.js platforms with next.js supabase integrations and scalable node.js services, using Next.js API routes and serverless backends โžก๏ธ INFRASTRUCTURE & DEPLOYMENT Vercel / Netlify / Strapi Cloud AWS Amplify / AWS Lambda Railway / Render AWS / OVH Cloud / Azure I ensure your next.js and frontend react apps are always stable and and easily scalable If youโ€™re looking for a reliable Full Stack React developer, Frontend React expert, Nextjs developer, Frontend React developer, or Full Stack Developer React Node to build scalable and SEO-optimized platforms, happy to help! ๐——๐—ข๐— ๐—”๐—œ๐—ก๐—ฆ & ๐—ฃ๐—ฅ๐—ข๐——๐—จ๐—–๐—ง๐—ฆ ๐—œ ๐—•๐—จ๐—œ๐—Ÿ๐—— SaaS platforms, eCommerce, B2B dashboards, marketing & corporate websites, marketplaces, booking platforms, fintech dashboards, MERN Stack products, Headless CMS projects. My React, Next.js, Node.js and Headless CMS projects focus on measurable outcomes: 30โ€“50% faster page load, 40%+ smaller JS bundle, 3โ€“5x faster API response, 2โ€“3x faster content publishing, up to 30% lower infra costs. ๐—ง๐—ฒ๐—ฐ๐—ต๐—ป๐—ผ๐—น๐—ผ๐—ด๐—ถ๐—ฒ๐˜€ ๐˜„๐—ฒ ๐—ฏ๐—ฟ๐—ถ๐—ป๐—ด ๐˜๐—ผ ๐—ฝ๐—ฟ๐—ผ๐—ท๐—ฒ๐—ฐ๐˜๐˜€: Full Stack developer React Node expertise, Frontend React developer, Front end developer support, Full stack React developer stack, Full Stack Developer React Node, Frontend React developer, Full Stack developer, Headless CMS developer, Next.js, Nextjs developer, Astro CMS, TypeScript, Node.js developer, NestJS, PostgreSQL, MongoDB, MERN, MERN Stack, Redis, Strapi CMS, Payload CMS, Sanity, Directus, Supabase, Firebase, AWS, Vercel, Docker, AEM / Adobe Experience Manager, along with web & mobile design & QA. ๐— ๐—˜๐—ฆ๐—ฆ๐—”๐—š๐—˜ ๐—บ๐—ฒ "๐——๐—ฅ๐—ฌ" and get a detailed expert consultation on your project idea ๐Ÿ“ฉ

  • Responsive Design
  • React Native
  • React
  • JavaScript
  • Node.js
  • Next.js
  • HTML
  • CSS
  • TypeScript
  • Web Development
  • Front-End Development
  • Web Design
  • Strapi
  • Redux
  • Bootstrap
  • CSS 3
  • HTML5
  • MongoDB
  • Hugo
  • Contentful
Syed A.

Lahore, Pakistan

$40/hr
4.7
52 jobs

๐ŸŒ๐Ÿš€ MVP / SAAS Specialist Expertise in | AI Developer | RAG | LLM | AI Integration | Python | OpenAI API Integration | Artificial intelligence | Machine Learning | Langchain | Django React JavaScript | FastAPI | AI agent | AI App Development | AI bot | AI chatbot | AI Agent | Restful API | PostgresSQL | Botpress | PostHog | MCP Server | Multi-Agents/Multiple Agents | Voice AI ๐Ÿ”‘ ๐ˆ ๐›๐ฎ๐ข๐ฅ๐ ๐š๐ง๐ ๐๐ž๐ฉ๐ฅ๐จ๐ฒ ๐œ๐ฎ๐ฌ๐ญ๐จ๐ฆ ๐ฐ๐ž๐› ๐š๐ฉ๐ฉ๐ฅ๐ข๐œ๐š๐ญ๐ข๐จ๐ง๐ฌ, AI-Powered MVP, AI Healthcare Tools, AI Writing Tool, GPT Clone, Full Stack Application, Multi-Tenant ๐š๐ง๐ ๐ข๐ง๐ง๐จ๐ฏ๐š๐ญ๐ข๐ฏ๐ž ๐€๐ˆ ๐ฌ๐ฒ๐ฌ๐ญ๐ž๐ฆ๐ฌ ๐ญ๐ก๐š๐ญ ๐ฌ๐จ๐ฅ๐ฏ๐ž ๐œ๐จ๐ฆ๐ฉ๐ฅ๐ž๐ฑ ๐ฉ๐ซ๐จ๐›๐ฅ๐ž๐ฆ๐ฌ, ๐œ๐ซ๐ž๐š๐ญ๐ž ๐ง๐ž๐ฐ ๐ฏ๐š๐ฅ๐ฎ๐ž, ๐š๐ง๐ ๐ข๐ฆ๐ฉ๐ซ๐จ๐ฏ๐ž ๐ฎ๐ฌ๐ž๐ซ ๐ž๐ฑ๐ฉ๐ž๐ซ๐ข๐ž๐ง๐œ๐ž๐ฌ. ๐ŸŽ A 100% refund, if I'm unable to meet our agreed commitments. No questions asked! ๐Š๐ž๐ฒ ๐…๐š๐œ๐ญ๐ฌ: ๐Ÿง‘โ€๐Ÿ’ป 8+ years of experience as a Full Stack Developer and Artificial Intelligence Specialist ๐Ÿš€ 50+ market-winning projects launched โŒ› Around 600 hours on Upwork ๐ŸŽฏ Top-Rated on Upwork ๐ŸŒ‰๐ˆ'๐ฏ๐ž ๐ฌ๐จ๐ฅ๐ฏ๐ž๐ ๐ž๐ง๐ ๐ข๐ง๐ž๐ž๐ซ๐ข๐ง๐  ๐ฉ๐ซ๐จ๐›๐ฅ๐ž๐ฆ๐ฌ ๐Ÿ๐จ๐ซ ๐ญ๐จ๐ฉ ๐œ๐จ๐ฆ๐ฉ๐š๐ง๐ข๐ž๐ฌ ๐š๐ง๐ ๐ฌ๐ญ๐š๐ซ๐ญ๐ฎ๐ฉ๐ฌ ๐š๐ซ๐จ๐ฎ๐ง๐ ๐ญ๐ก๐ž ๐ ๐ฅ๐จ๐›๐ž โ˜‘๏ธ Under Armour โ˜‘๏ธ Snowflake โ˜‘๏ธ Estateza โ˜‘๏ธ SearchLook โ˜‘๏ธ Sparrowcharts ๐Ÿ’ก ๐–๐ก๐š๐ญ ๐œ๐š๐ง ๐ˆ ๐›๐ซ๐ข๐ง๐  ๐ญ๐จ ๐ฒ๐จ๐ฎ๐ซ ๐ญ๐š๐›๐ฅ๐ž? โ˜‘๏ธ Full Stack Development for robust and scalable web applications, including both front-end and back-end technologies โ˜‘๏ธ Custom Web and Application Development utilizing frameworks like Python, React, Django, React.js / Angular / Next.js / Nest / Nust / Golang and Node.js โ˜‘๏ธ Expertise in LLMs and ChatGPT integration to enhance application functionalities โ˜‘๏ธ Proficiency in RESTful APIs, GraphQL, and database management โ˜‘๏ธ Experience with cloud services like AWS, Azure, and Google Cloud for deployment and scaling โ˜‘๏ธ Strong problem-solving skills and ability to optimize user experiences and application performance ๐ŸŒŸ๐‡๐ž๐ซ๐ž'๐ฌ ๐ฐ๐ก๐š๐ญ ๐‚๐ฅ๐ข๐ž๐ง๐ญ๐ฌ ๐ก๐š๐ฏ๐ž ๐ญ๐จ ๐ฌ๐š๐ฒ ๐š๐›๐จ๐ฎ๐ญ ๐ฆ๐ž: ๐ŸŒŸ Ali Hamza is in the top tier of software developers and data engineers. He is far more than an implementer; he is a strong architect. During this project set, Usama worked on data from major US corporations ๐ŸŒŸ One of the best developers I have ever worked with. He is always on time and does exactly what he says he will do. I could not recommend him enough. ๐ŸŽฏ ๐ˆ ๐ฉ๐จ๐ฌ๐ฌ๐ž๐ฌ ๐ž๐ฑ๐ฉ๐ž๐ซ๐ญ๐ข๐ฌ๐ž ๐ข๐ง ๐ญ๐ก๐ž ๐Ÿ๐จ๐ฅ๐ฅ๐จ๐ฐ๐ข๐ง๐  ๐๐จ๐ฆ๐š๐ข๐ง๐ฌ โ˜‘๏ธ Full Stack Development: โ˜‘๏ธ Backend: โ˜‘๏ธ Python โ˜‘๏ธ Django โ˜‘๏ธ Flask โ˜‘๏ธ NodeJs, Express.js โ˜‘๏ธ Rest API, SOAP โ˜‘๏ธ Websocket โ˜‘๏ธ Third party integration โ˜‘๏ธ Frontend: โ˜‘๏ธ Html5, Css3, Bootstrap โ˜‘๏ธ Javascript โ˜‘๏ธ ReactJs, Angular โ˜‘๏ธ VueJs โ˜‘๏ธ NextJs, NuxtJs โ˜‘๏ธ Ajax, JSON, XML, XHTML, SVG, Canvas โ˜‘๏ธ API integration, OpenAI API โ˜‘๏ธ DevOps: โ˜‘๏ธ CI/CD Pipelines โ˜‘๏ธ IaC โ˜‘๏ธ Docker โ˜‘๏ธ Kubernetes / Terraform โ˜‘๏ธ Elasticsearch โ˜‘๏ธ Cloud Computing (Azure, AWS, Google Cloud) โ˜‘๏ธ Version Control (Git, GitHub) โ˜‘๏ธ Containerization + Orchestration (Docker, Kubernetes) โ˜‘๏ธ Spring Boot / Java, Microservices Architecture โ˜‘๏ธ Real-time / Streaming / Event-driven architectures โ˜‘๏ธ Session Recordings / Session Replays โ˜‘๏ธ GraphQL / gRPC โ˜‘๏ธ Kafka / Redpanda (real-time streaming) โ˜‘๏ธ Generative Artificial Intelligence (GenAI) โ˜‘๏ธ Large Language Models (LLMs) โ˜‘๏ธ Natural Language Processing (NLP) โ˜‘๏ธ ChatBots and Virtual Assistants โ˜‘๏ธ Text to Image Modelling โ˜‘๏ธ Vector Databases โ˜‘๏ธ Retrieval-Augmented Generation (RAG) โ˜‘๏ธ ChatGPT โ˜‘๏ธ OpenAI โ˜‘๏ธ AI/ML (Artificial Intelligence + Machine Learning) โ˜‘๏ธ Multimodal AI / NLP โ˜‘๏ธ Agentic AI / Autonomous Agents โ˜‘๏ธ โ€œVibe Codingโ€ / AI-first / prompt-driven dev workflows โ˜‘๏ธ Explainable AI / Ethical, Sustainable AI โ˜‘๏ธ Edge AI / On-device / Federated Learning โ˜‘๏ธ Web Scraping โ˜‘๏ธ Data Extraction โ˜‘๏ธ Data Scraping โ˜‘๏ธ Scrapy โ˜‘๏ธ Selenium โ˜‘๏ธ Beautiful Soup โ˜‘๏ธ Requests โ˜‘๏ธ Deployment and scheduling the scraping scripts on server โ˜‘๏ธ PostHog / Mixpanel / Amplitude / Segment (Twilio Segment) โ˜‘๏ธ OpenTelemetry (Datadog / Grafana / Sentry โ˜‘๏ธ LaunchDarkly / GrowthBook / VWO / Optimizely / Klaviyo โ˜‘๏ธ Airbyte / Fivetran / DBT โ˜‘๏ธ Auth0 / Clerk / SuperTokens / Google Auth โ˜‘๏ธ Stripe / Paddle โ˜‘๏ธ Plaid AI + Analytics Integrations โ˜‘๏ธ LangSmith / LangFuse โ€“ Observability and evaluation layer for LLM apps. โ˜‘๏ธ Weaviate / Pinecone / Qdrant โ€“ Vector DBs for AI features with analytics hooks. โ˜‘๏ธ Whylabs / Arize AI โ€“ ML observability & monitoring (similar to PostHog but for models). I am a Fullstack AI Developer - Python Django, React, Flask, API Integration I can help you to build: โšก Fast MVP Development (AI-Powered) โœ… โšก AI Powered SAAS Applications โœ… โšก AI Agent RAG Systems | AI Chatbots โœ… โšก Open AI API Integrations / LLM โœ… โšก Full stack Development (AI/ML, Django, React) โœ… โšก AI Workflows Automation โšก Voice AI tools Thank you for visiting my profile. Looking forward to working with you! I will ๐Ÿ’ฒREFUND ๐Ÿ’ฒ, if your expectation wont meet. For reference, you can see my work and testimonials below. Lets Chat!

  • React
  • Artificial Intelligence
  • Machine Learning
  • AI Agent Development
  • OpenAI API
  • AI Development
  • Django
  • Python
  • Retrieval Augmented Generation
  • API Integration
  • JavaScript
  • PostgreSQL
  • Large Language Model
  • Chatbot Development
  • LangChain
  • API
  • LLM Prompt Engineering
  • Web Application
  • AI App Development
  • FastAPI
Mateus L.

Belo Horizonte, Brazil

$30/hr
5.0
5 jobs

If you've worked with developers who disappear mid-project or deliver generic templates, you already know the cost of rework and delays. I build custom WordPress websites focused on performance, SEO, and long-term scalability โ€” so you don't deal with that again. I've worked on WordPress projects for companies like KraftHeinz, Grupo Boticรกrio, and Hospital Mater Dei โ€” and more recently with US and European teams at Dexian (Florida), Titan Clarity (Seattle), and Open Circle (Spain). What I focus on: WordPress websites that are fast, SEO-structured, and easy to scale โ€” not just visually done. โ†’ Reduced LCP from ~5s to under 2s across multiple WordPress projects โ€” measurable in PageSpeed Insights โ†’ Delivered 20+ pages from Figma to production in 5โ€“6 weeks for Open Circle (Spain) โ†’ A/B testing and CRO implementation on high-traffic pages at Nuvemshop's Growth team (VWO + HubSpot) โ†’ Delivered a complete 8-page WordPress site from scratch in under 10 hours โ€” responsive, production-ready Core tools: WordPress (custom themes, plugins, hooks & actions), Elementor, ACF, Gutenberg, WooCommerce. Also working with: PHP, React, Next.js, TypeScript, SEO, Core Web Vitals, GTM/GA4. How I work: Clear scope, structured delivery, and proactive updates โ€” so you always know what's happening and when. I work seamlessly across US and European time zones, with daily communication in English. If your project needs someone who reads the brief, builds to spec, and delivers without drama โ€” let's talk.

  • Responsive Design
  • React
  • WordPress
  • Elementor
  • Gutenberg Editor
  • Advanced Custom Fields Plugin
  • WooCommerce
  • PHP
  • Technical SEO
  • Page Speed Optimization
  • Performance Optimization
  • Website Optimization
  • Next.js
  • JavaScript
  • TypeScript
  • CSS
  • SCSS
  • HTML
  • MySQL
  • Node.js

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