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What I help with: • AI agent development, AI app development and LLM / OpenAI API integration • API integration and API development — REST APIs, OAuth, webhooks, payment gateway integration • Full-stack web development with React, Next.js, Node.js, TypeScript and Python • Workflow automation with n8n, Make and Zapier • Chatbot development — WhatsApp API, Telegram and GPT chatbots, shared team inboxes • SaaS development and web applications, from MVP to production • Messaging infrastructure — Matrix/Synapse, WhatsApp/Messenger/Instagram bridges, CardDAV sync Who I work with: founders and small product teams who need one senior developer to own a build end to end rather than a ticket-taker. I work end to end: architecture, backend, frontend, databases, AI workflows, integrations, infrastructure, deployment, and production maintenance. I have launched SaaS products as a solo founder, so I know not only how to write code, but how to ship, support, debug, and keep real software running for real customers. My products include Chronos, a time-tracking SaaS and Trello Power-Up used by paying customers, and SyncContact, a contact-centric communication and CRM platform I built end to end. It began as a cross-device contact synchronization product — a standards-compliant CardDAV server working with iOS, Android, and macOS native clients, with Google Contacts and Trello integrations and shared addressbooks with workspace-level roles — and grew into a full relationship hub: Matrix/Synapse-based messaging with WhatsApp, Messenger, and Instagram bridging, shared team inboxes, a sales pipeline with deals and stages, AI chat analysis, an AI message-composer assistant, AI translations, and audio transcription. The product code, architecture, integrations, backend, frontend, mobile app, and infrastructure are all mine. My two strongest areas right now are: Messaging infrastructure. I've gone deep into Matrix and Synapse: self-hosted deployments, custom bridge development, WhatsApp/Messenger/Instagram integration, Element customization, custom timeline rendering, and voice/video calling. I build customer helpdesk and support portals on top of the Matrix protocol — where every support ticket is a Matrix room, agents work from shared inboxes, and customer messages flow in from WhatsApp or Messenger through bridges. If you want to own your communication stack instead of renting it, this is exactly what I do. AI product integrations. I build practical AI features inside production software, not demos: chat analysis, message drafting, translation, transcription, and automated media generation. I also built an AI video production pipeline that processed around 1,000 client orders in Brazil, turning customer photos into animated videos using my own tooling on top of multiple AI providers, including Kling API. My stack: Frontend: React, Redux Toolkit, Zustand, modern React architecture Backend: Node.js, Python, Go, APIs, workers, queues AI: LLM API integrations, AI assistants, translation, transcription, image/video generation pipelines Messaging: Matrix/Synapse, WhatsApp bridges, Messenger/Instagram integrations, Meta Business, CardDAV/vCard sync, support chat, shared inboxes Mobile: React Native Desktop: Electron, Tauri Infrastructure: Linux, Docker, CI/CD, PostgreSQL, MongoDB, Redis, AWS What working with me looks like: I take ownership of the problem, not just the ticket. I will tell you when something is a bad idea, propose a simpler path when one exists, and ship working software without needing to be managed. Available for: AI-powered SaaS products, LLM/AI API integrations, Matrix/Synapse and messaging infrastructure, full product builds from MVP to production, and complex full-stack work where architecture matters.

I am a Full Stack Developer with 8+ years of professional experience delivering scalable, high-quality solutions for clients worldwide. I specialize in creating seamless, high-performance web and mobile applications tailored to your business needs. I have experience with the following web technologies and languages: 📌 PHP 📌 Laravel 📌 NodeJS 📌 NextJS 📌 ExpressJS 📌 MySQL, SQL 📌 MongoDB 📌 Liquid Theming 📌 Shopify 📌 JavaScript, TypeScript 📌 HTML, HTML5, XML 📌 CSS, CSS3 and capable of using a variety of frameworks and libraries such as ►WordPress ►Laravel ► CodeIgniter ►JQuery ► Bootstrap, Material ►Node JS ►Vue JS ►React JS ►Express JS ►NextJS I have good experience with WordPress CMS and Squarespace Website builder, I have designed and developed many websites, templates, and plugins for WordPress, and I can work easily with CPanel and hosts with the ability to setup AWS EC2 instances, MS Azure Virtual Machines for any kind of websites/applications and do the migration process. I also have knowledge of using source control and version control tools also I’m flexible in working with any time zone and remote jobs. 🔥 Worked over 1550+ hours here at Upwork with global teams and talents. 🌏 Trusted by international clients from the United States, Australia, Italy, Germany and Netherlands. 💎 100% Long-term clients ✅ Exceptional Quality ✅ Leadership Skills ✅ Prompt Communication ✅️ 100% Success Rate ✅️ Commitment ✅️ Problem Solver Tools ⚙️ ⚡️ Task Management: Teamwork, ClickUp, Jira ⚡️ Chat: Slack, MS Team, Discord, Google Chat ⚡️ Source Controls: Git, GitHub, GitLab, Bitbucket ⚡️ LocalServer: Xampp, Docker, VSCode, Apache, Nginx ⚡️ DevOps: WHM/cPanel Hosting, Webmin, AWS instances, Oracle Cloud, MS Azure, DNS management ⚡️ Bash, Terminal, NPM, SSH, MobaXterm Thanks for reading 🙏 💬 Let's collaborate on your next project!

Building an app is easy now. Making one that holds up — handles real users, real money, real edge cases — is not. That second part is what I do. I've used AI to write code since the Copilot beta — long before it was normal. So I move fast, but I always know what my code does and why. That's the whole difference: fast doesn't have to mean fragile. Since 2019, I've shipped dozens of projects across web and mobile. Most problems aren't really new — they're a version of something I've solved before. I work full-stack — React, Next.js, TypeScript, Node.js, Supabase, PostgreSQL on the web, and React Native with Expo on mobile. Web or mobile, I'm solid on both. I think like a product person, not just a coder. After building dozens of web and mobile apps — the ones that worked and the ones that didn't — I pay real attention to the user experience, and I'll push back if something doesn't make sense for the people using it. If you want input on the product side, I'm happy to give it. I also work well with teams. I led a team of five before going freelance, and I'm used to fitting into a daily workflow — Slack or Teams, Jira, running sprints. Whether you need someone to just take a task and run, or someone who plugs into your process, I can do either. Some of the things I've built: - E-commerce — multiple stores, both on fully custom backends (Next.js, Stripe, PayPal) and headless with Shopify Storefront API, Sanity, and Next.js. I know the SEO side well, and I've handled migrations — moving older stores onto a faster, modern setup without breaking what already works. - A football-focused sports platform — large datasets syncing constantly from multiple sports APIs, high request volume across many endpoints, RLS policies for data access, and AI content-generation workflows - Canva-style design editors — a full editor on web with Konva.js, and the same kind of thing on mobile with React Native Skia and Reanimated (an area I'm genuinely strong in) - Programmatic video with Remotion — for the sports platform I built a system that auto-generates short-form videos end to end: script generation, TTS, and image generation - Fintech — helped modernize a legacy fintech app, moving the old stack to a current React Native and Expo build - Dating apps — two built with Expo and bare React Native , with complex animations, maps, and real-time features - B2B mobile apps for corporate clients — built from scratch (under NDA, so light on the details) - A large management platform for a hospital chain On top of these, I've built plenty of the everyday stuff too — admin panels, SaaS dashboards, landing pages, internal tools. I've done a lot of it, so it's fast, solid work for me. I'm Top Rated with 100% Job Success. I work independently, communicate clearly, and treat your project like my own. Whether it's something new or something half-built that stalled — tell me what you need, and I'll tell you straight if I can do it. 🧠 Tech Stack Core: TypeScript / JavaScript (ES6+), React, Next.js (App Router, SSR), React Native, Expo, Supabase, Firebase, PostgreSQL, Node.js (Express), Prisma ORM, Web Canvas API UI / State / Forms: Tailwind CSS, Framer Motion, Reanimated, React Native Skia, Konva.js, Remotion, Three.js, Styled Components, React Query, Redux, Zustand, React Hook Form Integrations: Stripe, PayPal, RevenueCat, OpenAI, Shopify Storefront API, Sanity, FFmpeg, REST / GraphQL APIs, Edge Functions, Webhooks, WebSockets, Google Analytics, Facebook Pixel DevOps: Vercel, AWS, Google Cloud, Docker, GitHub Actions

Overview: 🤖 AI Automation Engineer & Flutter Developer specializing in RAG systems, AI agents, and cross-platform mobile apps. 📱 3+ years shipping production systems for startups, NGOs, and enterprises — from AI-powered backends to apps live on the App Store and Google Play. 🌍 Available across EST, PST, GMT, and AEST. About Me: I'm a software engineer who builds LLM-powered systems — RAG pipelines, AI agents, and automation workflows — using solid engineering practices instead of fragile no-code chains. My background is in Flutter mobile development, which now lets me deliver AI systems end-to-end: the automation, the backend, and the app or interface it runs in. I design with Python, FastAPI, structured data, and workflow tools like n8n, and I've shipped MVPs and production systems for startups, NGOs, and enterprise clients. What I Offer: 🤖 AI Automation & Intelligent Systems - AI agents and RAG systems built with FastAPI, pgvector, Supabase, and Ollama/OpenAI - Business process automation with n8n (self-hosted and cloud) - Lead qualification and enrichment pipelines with real-time Slack/Teams alerts - Market and competitor intelligence automation - Content automation for marketing and social ops - Structured, database-ready outputs — no silent failures 📱 Mobile App Development (Flutter) - Cross-platform iOS & Android apps with Clean Architecture - State management with BLoC, Cubit, Riverpod - Material Design & iOS HIG-compliant UI - Full App Store & Google Play deployment 🔗 Backend & Integrations - REST & GraphQL APIs, Firebase, Supabase, PostgreSQL, MongoDB - Authentication, webhooks, monitoring - Google Pay / Apple Pay integration - CI/CD with GitHub Actions & Docker 🛠 Tech Stack: Languages: Flutter, Dart, Python, JavaScript, TypeScript, Node.js Backend & Data: FastAPI, Firebase, Supabase, PostgreSQL, pgvector, MongoDB AI & Automation: n8n, RAG, Ollama, OpenAI (GPT-4o), Vector Databases Tools: Git, Docker, Notion, Jira, Figma Testing: Mockito, Widget Testing ✅ Why Work With Me: - Engineer mindset — I design systems, not templates - Rare combination: AI automation + mobile delivery in one person - Clean, future-proof architecture from day one - Clear communication across time zones, regular updates 🎯 Industries: AI assistants & internal tools, SaaS & startup apps, healthcare/telehealth, e-commerce, education, business operations automation. 📩 Let's Build Something If you need a reliable AI agent, an automation pipeline, or a mobile app built around one, send me a message or invite me to your job — happy to talk through your project.

Experienced IT Product/Project Man. for your 📌MVP 📌Roadmap 📌Scope 📌Timeline 📌Cost 📌Stakeholders. I assisted firms in SAAS, ECOMM, HEALTHCARE, FINTECH, TRAVEL, TELCO to improve their software products & gain agility without spending unnecessary development costs and timeline delays. Here is what my client says: 🌟"... Metin has been the most wonderful freelancer I've ever worked with. His attention to details and ability to work on short notice have been great help to us..." ~Head of Vendor Relations of MarkIT, a B2B marketplace for hardware 🌟 "... Metin was invaluable to this project. He did a wonderful job...." ~ Roto, an exhibit design company for science centers 🌟"...Metin was a key part of our team and will be missed. Very quick on communication and followed through to make sure the job got completed on time..." ~CTO of ScoutandCellar, full-scale ecommerce solution wine business 🌟 "... Metin is awesome. He has a great work ethic, great attitude, gets the job done and done wonderfully..." ~Principal of Roto, an exhibit design company for science centers 🌟"... Metin brings a high-level of enthusiasm to his job. Great attitude!..." ~Founder who published multiple apps in App Store/Google Play stores As a freelancer with ⭐⭐⭐⭐⭐ 5-Star Rating ✅ A Top 1% Performer on Upwork ✅ $250k+ Earned on Upwork ✅ 100% Job Success Score ✅ Reliable, Professional, Friendly ✅ 🥇Expert-Vetted professional && 🏆 Top Rated Plus Talent It means you get quality in a timely manner with a service provider mindset, 🅐🅛🅦🅐🅨🅢 With 10+ years of professional work experience, I am a technical project manager (product manager in other words) that uses modern fundamentals plus agile, scum, or even waterfall techniques to have your MVP, product market fit, POC, MVP and product that your users will love. How can you get the most out of my value proposition for your business? ❓Are you having difficulty finding product-market fit because of the scope discussions between the developer and the business? ❓Are you feeling frustrated with growing your team and not being able to scale at the same time? Ever wondered how a product-led organization does that? ❓Many changes are happening at once which impact your production and you want to fix a 𝙨𝙞𝙡𝙤𝙚𝙙 𝙩𝙚𝙖𝙢𝙨 in your organization? ❓Are you worried about retaining knowledge & documentation if you ever lose the super-human (who knows how to fix everything but busy) of your company? Then, let's have a meet-and-greet over an online call for discovery. 🟢 Click the green ‘Send Message’ button in the top right-hand corner 𝙎𝙤𝙢𝙚 𝙤𝙛 𝙢𝙮 𝙛𝙖𝙫𝙤𝙧𝙞𝙩𝙚 𝙥𝙧𝙤𝙙𝙪𝙘𝙩 𝙢𝙖𝙣𝙖𝙜𝙚𝙢𝙚𝙣𝙩 𝙩𝙤𝙤𝙡𝙨 𝙖𝙧𝙚: ✔️ Atlassian JIRA, Trello, Asana.com, Monday.com, ClickUp, Airtable, Aha for Product Management - Roadmap Planning ✔️ GitHub, GitLab, Postman, Jenkins, Mixpanel, Metabase ✔️ Confluence, Notion, Spreadsheet, Google Sheets, Google Docs, Google Suite, Microsoft Suite ✔️ , HubSpot, ✔️ Miro, Microsoft Visio, Draw-io, Whimsical, draw.io, LucidChart, Figma, Adobe Xd ✔️ Figma, Miro, Zeplin, InVision, HotJar, UserTesting.com, Framer, Webflow ✔️ Slack, Microsoft Teams, Skype Not every business is my client, though. Some signs we might not be a good fit include: ✗ The company is struggling to pay salaries - can’t do that in good conscience ✗ ”Respect for others” is not a core value - we love working with awesome people we respect Expertise: Business Analysis, Requirement Elicitation, Stakeholder Management, User Flows Creation, Wireframing, Rapid Prototyping, Cryptocurrency, Bitcoin, Ethereum, SDK, Polygon, Next.Js, Development Team Leadership, SDLC, MVP, Competitors Research, Product Owner, Scrum Master, Technical Project Manager, Project Management, Digital Product Management, Data Visualization, PM, OpenAI ChatGPT, LLM, ML, Machine Learning, SaaS, B2B, Node.js, Mysql, React Native, React, JotForm, Low code, OAuth, OpenID Connect, Auth0, Metabase SOUND LIKE A FIT? NEXT STEPS: 1. 🟢 Click the green ‘Send Message’ button in the top right-hand corner 2. 💬 Write me a note, and let's organize a call!

With over 13 years of experience in full-cycle product engineering, and AI Automation development, I specialize in bringing ideas to life through comprehensive product development and agile methodologies. Also, My 13+ years of experience in full-stack development with Python, Django and React complement my product management and project management expertise, making me uniquely suited to collaborate effectively with technical teams. SERVICES OFFERED: AI & Automation Solutions: -Expertise in integrating AI Agents, Automations, GoHighLevel, N8N, Zapier, Make, AI Development, Voice Agent Product Management: Product Manager, AI product manager, Technical Product Management, Product Owner, Project manager, Technical project manager, Scrum, Agile, Senior product manager, Senior project Manager, Business Operations Engineering Fullstack python, React Developer, AI developer, SaaS Engineer, AI Systems Architect, Custom Software developmetn, SaaS Development, Mobile App Development, Supabase, AWS, Heroku, CRM, ERP Custom Build Automation: API Integration, AI Automation, N8N Automation, GHL, GoHighLevel Automation, AI Integration, LLM Integration, AI Agents, HIPAA compliance, healthcare AI Automation, Voice Agents, Dashboards and reporting, Notion Automation, Zapier, Make Expertise: Startups & SaaS: Over 8 years of experience in creating and improving SaaS products. Mobile Applications: Extensive work in mobile app development and management. Agile & Product Management Tools: Advanced user of Notion, Jira, ClickUp, and more. Digital Marketing & Business Platforms: 5+ years as a Product Manager in a digital marketing agency, with additional experience in developing digital business platforms. Experience Highlights: 13+ years: Creating and improving SaaS products. 10+ years: Product Manager in a digital marketing agency. 13+ years: Full-stack development with Django Python and React.js. 8+ years: Creating and improving digital business platforms. 5 years: Facilitator for the Global Startup Weekend program. Skills & Tools: Project Management: Jira, ClickUp, Notion, Trello, Asana, Monday, Confluence. Design Tools: Figma, Adobe XD, Adobe Photoshop. Development: Python, Django, DRF, HTML, CSS, JavaScript, WordPress. Automation Tools: Zapier, Make, N8N