Hire the Best Minimum Viable Product Freelancers
in Ukraine

Most AI apps demo beautifully — then break the moment real users and real payments hit them. Subscriptions that double-charge, webhooks that silently fail, billing that collapses on the first edge case. I build the part that has to actually work. I'm a full-stack developer focused on Stripe payments and production-grade AI apps on Next.js + Supabase. Bring me an idea or a half-finished product, and I ship the version that holds up when money and users are real. What I handle end to end: — Stripe: subscriptions, metered/usage billing, Connect, Price IDs, webhooks, affiliate & usage tracking — AI features: OpenAI/Claude integrations, RAG, AI workflows wired into a real product — Full stack: Next.js, TypeScript, Supabase (Postgres, RLS, Auth), Vercel — Auth, multi-tenancy, and the unglamorous production glue that keeps it all from breaking Selected results: — PropRadar — AI property-comparison platform (Next.js + Supabase). 5★, "technically very strong." — Stripe Checkout with Price ID + affiliate tracking, plus a full subscription billing dashboard. — AI website generators for B2B. 5★, "exceptional, high-performance." How I work: fixed-price with clear milestones. Instead of jumping on a call, I'll send you a deployed demo so you can judge the quality up front. Glad to start with a small paid task.

𝟰𝟱𝟬,𝟬𝟬𝟬+ users on platforms I built. 𝟰𝟯,𝟬𝟬𝟬+ payments and orders processed. $𝟵𝟱,𝟬𝟬𝟬+ a year cut from clients' running costs. I build SaaS MVPs on Next.js, TypeScript and Supabase, and I take over the ones that stalled: apps started in Lovable, Bolt, v0 or Cursor that break once real users arrive. Either way you get a fixed scope, a fixed price and a date. 🔧 𝗔𝗜-𝗕𝗨𝗜𝗟𝗧 𝗠𝗩𝗣 𝗧𝗔𝗞𝗘𝗢𝗩𝗘𝗥 I take over MVPs generated in Lovable, Bolt, v0, Cursor, Claude Code and Replit, and finish them into a product that holds real traffic. Common repairs: auth, roles and permissions rebuilt on top of a working prototype Stripe billing that survives trials, upgrades, proration and failed payments Supabase and Firebase schemas that stopped scaling data leaking between users, lost payments, apps that fall over under load Every takeover starts with a paid 𝘁𝘄𝗼-𝗱𝗮𝘆 assessment of your codebase. You get a written verdict on what is worth keeping, what has to be rewritten, the security and billing holes I found, and a fixed price with a delivery date. The fee goes toward the project if we build together. 🚀 𝗪𝗛𝗘𝗡 𝗬𝗢𝗨 𝗔𝗥𝗘 𝗦𝗧𝗔𝗥𝗧𝗜𝗡𝗚 𝗙𝗥𝗢𝗠 𝗭𝗘𝗥𝗢 Product strategy: feature scope, roadmap for version one, pricing and billing model SaaS platforms: multi-tenant data, subscriptions, usage limits, roles, admin dashboards with analytics and CSV export AI products: multi-LLM pipelines (OpenAI, Claude, Gemini), RAG, semantic search, AI agents, credit-based billing for AI actions Mobile apps: React Native for iOS and Android, including store submission Automation and API integration: REST and GraphQL APIs, Stripe, n8n workflows, Telegram bots, webhooks, Instagram and TikTok publishing Most builds go live in 𝟲-𝟴 𝘄𝗲𝗲𝗸𝘀. ⚙️ 𝗦𝗧𝗔𝗖𝗞 Next.js, React, TypeScript, Tailwind, Node.js, NestJS, Python, PostgreSQL, Prisma, Supabase, Redis, RabbitMQ, ElasticSearch, AWS, Vercel, Docker, Stripe. 📊 𝗪𝗢𝗥𝗞 𝗜 𝗖𝗔𝗡 𝗦𝗛𝗢𝗪 Full case studies with links are in my portfolio below. Postiq - AI SaaS for social media content: text and image generation, content calendar, auto-posting to Instagram, TikTok and Telegram, isolated workspaces per brand, credit system that charges only after a successful AI action. Content preparation time dropped 𝟰𝟬%, running costs dropped 𝟯𝟬%. Screenify - streaming and content aggregation platform: 𝟭.𝟭𝗠 titles, 𝟯𝟱𝟬,𝟬𝟬𝟬 users, 𝟮.𝟳𝗠 sessions a month. Parallel scrapers per source, proxy rotation, deduplication, sharded PostgreSQL, multi-region clusters, HLS player that starts under 𝟮 𝘀𝗲𝗰𝗼𝗻𝗱𝘀. e-crypto - crypto exchange site plus Telegram bot: live rates, rate lock at confirmation, commissions configurable per pair, operator panel for the request queue. It has processed 𝟯𝟮,𝟱𝟴𝟱 exchanges. 🤝 𝗛𝗢𝗪 𝗜 𝗪𝗢𝗥𝗞 One developer owns your project end to end, so nothing gets lost between people. I work as a product owner as well, so you also get calls on scope, pricing and what to leave out of version one, based on products I have shipped and watched run. You see a working build 𝗲𝘃𝗲𝗿𝘆 𝘄𝗲𝗲𝗸, you pay by stage, and the repository and accounts stay in your name from 𝗱𝗮𝘆 𝗼𝗻𝗲. After launch I stay available for support. 📩 𝗡𝗘𝗫𝗧 𝗦𝗧𝗘𝗣 Tell me what you have, who it is for, and where it stopped. I will come back with a straight read on whether it is worth saving and what it would take. If it is a fit, tell me a time that suits you and we will get on a call.

Full Stack Developer, 12+ years and 150+ products shipped across 20+ countries. I lead a team of Laravel and Vue.js developers. The work I am proudest of runs real operations: medical transport moving 5,000+ patients a year, delivery fleets planning 500+ routes a day. Top Rated on Upwork since 2018. Clutch 5.0 across 20 reviews, GoodFirms 4.93 across 25. You probably recognize yourself in one of these. You are launching a product and want a first version that still holds up a year in. You are running on a system that has gotten slow and fragile, and hard to hand to a new developer. Or you work in a field where the software has to hold up because people depend on what it moves. WHAT YOU GET ✔️ A Full Stack Developer team behind your build. I lead Laravel developer and Vue.js developer specialists plus a WordPress developer. One person out does not stall the build. ✔️ Ratings you can check. 98% positive reviews across 100+ web projects, an 8-year client relationship still running. ✔️ Systems that hold under real load. The Secure Care UK platform runs 5,000+ secure patient transfers a year across a 25+ vehicle fleet and a 24/7 control room. ✔️ Code you can maintain after handover. Documentation, tests and knowledge transfer. You are never locked into depending on us. Send me what you are building or the system you need fixed, and I will reply with an architecture plan and the first decision I would settle. Kind regards, Alexandra ----- HEALTHCARE, 25+ PROJECTS DELIVERED - Full Stack Developer, Secure Care UK medical transport: 5,000+ secure patient transfers a year, 25+ vehicle fleet, 24/7 control room. - Healthcare App Developer, Secure Care UK tablet app: status prompts every 30 minutes across 4 job levels, saving a few thousand a month over the old platform. - Healthcare App Developer, Rheo vitals wearable: 5 vital-sign categories streamed over LTE in real time with per-user alert thresholds. - HIPAA Developer, UI UX Design fertility tracking app: bug-free rate raised from 85% to 96% on retest, delivered in 3 months against a 4-month estimate. - Full Stack Developer, Healthcare Apps portfolio: 25+ healthcare projects across web and mobile in 12+ years. LOGISTICS, 20+ PROJECTS DELIVERED - Logistics App Developer, multi-depot delivery system: 12+ depots, 500+ daily routes, automated planning. - Laravel Developer, multi-tenant fleet platform: 5+ subsidiaries on one Full Stack Web Developer build with automated route planning. - Logistics App Developer, courier fleet tool: 3 regions, 100+ active drivers, offline navigation that re-syncs on reconnect. - Full Stack Web Developer, last-mile logistics app: customer satisfaction lifted from 35% to 85%, delivery wait cut 34% in low-signal areas. - Back End Developer and Backend Developer, logistics launch: 12 new partners signed within 3 months, 8 more in the pipeline. WEB PLATFORMS AND LARAVEL - Full Stack Web Developer, UI UX Design - The Cultivist rebuild: 90% jump in user base after launch, 8-year relationship and counting. - Laravel Developer, FATBZ crypto platform: dual-wallet setup, in-house RNG engine, ForumPay for deposits, payouts and USDT conversion. - Laravel Developer and Expert Laravel Developer, PHP Laravel API work: 100+ web solutions over 12 years in web development. - Full Stack Web Developer, Laravel backend developer builds: REST APIs with clean architecture, Laravel Docker deployment, Laravel Wordpress integrations. - PHP Developer, Wordpress Developer work: custom themes, plugin development and web design overhauls. VUE.JS AND FRONT END - Vue.js Developer, admin dashboards: reusable component libraries in Vue Tailwind with Vuex and Pinia state. - Vue.js Developer, UX UI Vue.js interfaces: 35+ web designs and 70+ wireframes behind the builds. - Vue.js Developer, Vue.js Node.js stack: API-driven dashboards with GraphQL and JWT auth. - Front End Developer, Nuxt Developer work: Vue.js Nuxt and Vue Nuxt server-rendered front ends. - Vue.js Developer and React Developer collaboration: PHP Laravel React and Laravel Vue delivery with trusted partners. UI UX DESIGN AND MORE - Web Designer and Website Designer, UI UX design: 40+ mobile app designs, 35+ web designs, 70+ wireframes. - Website Developer and Full Stack Website Developer, web development: 150+ products shipped, used in 20+ countries. - MORE: Web Design, Web Development, Full Stack Developer AI, Full Stack MERN, Full Stack React Developer, Full Stack Developer React Node, Python Full Stack Developer, Full Stack Web App, Full Stack Developer Webflow, Full Stack Laravel, Full Stack Developer Laravel, Vue Js Wordpress, Webflow Developer, Shopify Web Developer, Wix Website Developer, Web Scraping: 150+ products, 12+ years, Top Rated since 2018. SKILLS: HTML, HTML5, CSS, CSS 3, JavaScript, jQuery, PHP, Python, SQL, React, Node.js, Angular, WordPress, Bootstrap, Git, software design, software architecture & design, software development, software debugging, desktop application.

My focus is to define client needs, clarify requirements, provide solutions, visualize and document them. This narrow list of services allows my clients to feel confident about receiving what they expect as a result of software development. 🚀My expertise includes:🚀 🔥 Translate product strategy into product requirements 🔥 Defined product key selling features 🔥 Identified and described in detail all the necessary features of your product 🔥 Write user stories, SRS and BRD 🔥 Build project roadmap and backlog 👨🏻‍💻Problems I help to solve: ✅ Endless scope (features) ✅ Meet the cost you didn't expect ✅ Not defined and measurable project expectations ✅ Missed market launch Deliverables you could expect from me: 👉 SRS 👉 BRD and FRD 👉 Use Case and Process Flow Diagrams 👉 User Stories Sound like exactly what you need? Feel free to get in touch about your project and see how I can help you 👍🏻 🧰 Tools: Figma, Notion, Miro, Draw.io, Jira, Confluence, Whimsical, Clickup, LucidChart, MS Visio, Asana, XMind, Trello. 🧰 Domains: E-Commerce, FinTech, Logistics, Warehouse, Supply Chain, Trucking, Transportation, Healthcare, E-learning, Wellness and Beauty, AdTech, Retail, Real Estate, CRM, SaaS, ERP. 🧰 Skills: Requirements Gathering, User Story, Scope Management, Product Roadmap, Product Backlog, Change Management, Competitor Analysis, Feature Definition, Stakeholder Analysis, Functional Requirements, Non-Functional Requirements, Business Requirements, Market Research. 🧰 Tech: MVP, Prototype, Agile, Scrum, Kanban, SDLC, SWOT.