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Are you looking for a 𝗙𝘂𝗹𝗹-𝗦𝘁𝗮𝗰𝗸 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 who actually gets things done? I'm Artem. I've been building web products for years — React, Next.js, Node.js, TypeScript — the full picture, frontend to backend. Not "I touched React once" kind of experience. Real production systems, real users, real scale. I built and scaled Yumzi.app to 10,000+ restaurants. That kind of thing. 𝗛𝗼𝘄 𝗜 𝗮𝗰𝘁𝘂𝗮𝗹𝗹𝘆 𝘄𝗼𝗿𝗸: I don't wait around for someone to explain every detail. I jump into the codebase, understand the architecture, ask the right questions, and start moving. If something in the project doesn't make sense technically — I'll tell you honestly instead of just building it the wrong way. I care about the product, not just the ticket. So if I notice something broken or a better approach while working on your project — I'll bring it up. That's just how I operate. 𝗪𝗵𝗮𝘁 𝗜 𝘄𝗼𝗿𝗸 𝘄𝗶𝘁𝗵: 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱: React, Next.js (App Router), TypeScript, Tailwind CSS, Shadcn/ui, Framer Motion, Redux, Zustand 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗮𝗻𝗱 𝗗𝗮𝘁𝗮: Node.js, NestJS, Prisma, PostgreSQL, Supabase, Firebase, REST/GraphQL 𝗔𝗜 𝗮𝗻𝗱 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀: OpenAI API, Claude, Grok, Stripe, DLocal, Twilio, SendGrid 𝗧𝗼𝗼𝗹𝘀: Git, Vercel, Docker, Figma to code I'm open to both — long-term product work where I become a core part of your team, or shorter engagements like MVPs, new features, or performance problems nobody else wants to debug. Send me a message, let's talk about your project.

I build production dashboards and AI-powered SaaS - RAG memory systems, multi-LLM apps, and real-time voice agents - on a Next.js / React / TypeScript stack. Full-Stack Developer, 4+ years building scalable, secure web apps across AI, healthcare, web3, and IoT - from PostgreSQL schema and payments to streaming LLM features and pixel-perfect UI. Teams also bring me in to debug, harden, and fix vulnerabilities in live products. WHAT I DO BEST • AI / LLM: RAG and vector search, real-time audio agents, persistent memory, multi-provider orchestration (Claude, OpenAI), LangChain, Vercel AI SDK • Full-stack SaaS: multi-tenant dashboards, role-based access, admin panels, drag-and-drop UIs, PDF and media handling • Payments & security: Stripe and other gateways (one-time + subscriptions), webhook-verified flows, security audits and vulnerability fixes • Web3: wallet connections, smart-contract interactions, NFT / quest platforms SELECTED PROJECTS • AI Coaching Platform - production AI SaaS with real-time audio agents, a RAG memory system (vector DB + Postgres) grounding every response in user history, multi-provider LLM streaming, and automated workflows. (Next.js, Express, Supabase, Vercel AI SDK, LangChain) • Healthcare Dashboard - role-based patient and doctor portals with task management (kanban, drag-and-drop), calendar, AI doctor tools, and PDF/DOCX handling. • NFT Quest Platform (web3) - wallet and smart-contract interactions; full flow from admin quest creation to the user experience; migrated Vue/Nuxt to Next.js. • Prize Competition Platform - secure card payments (webhook verification, settlement tracking), instant-win mechanics, and admin payouts; found and fixed a payment vulnerability in a security audit. • Analytics Dashboards - complex data builder with dynamic visualizations and secure profile management. • SaaS for Artists - auth, group collaboration, media handling (text and audio), audio players, and calendar. TECH STACK Frontend: React, Next.js (App Router, SSR), TypeScript, Tailwind, shadcn/ui, Framer Motion, Redux Toolkit, TanStack Query Backend: Node.js, Express, Nest.js, serverless (Firebase / Supabase functions), REST APIs, webhooks, cron jobs AI / LLM: Claude, OpenAI, Vercel AI SDK, LangChain, RAG, vector databases Data & Auth: PostgreSQL, Supabase, MongoDB, Firebase; NextAuth, Firebase Auth, JWT, OTP Payments: Stripe + other gateways (one-time + subscriptions) Tools: GitHub / GitLab, Figma, Vercel, Sentry HOW I WORK Clean, maintainable code. Honest timelines and clear communication. I care about what bites later - security, edge cases, and performance.

There is a specific kind of web development that many engineers avoid the kind where the software must scale seamlessly under heavy usage, integrate with complex APIs, handle sensitive business data, and still deliver a polished, intuitive experience for clients and end-users alike. That is exactly the intersection I have built my career in. With 8+ years of full-stack development experience, I have shipped Healthcare SaaS platforms, multi-tenant marketplaces, internal dashboards, and scalable web applications that grow with your business. Each project demanded a level of technical depth and product precision beyond generic web app development. Healthcare SaaS is where my experience is most focused. I have worked on patient management systems, telehealth platforms, and healthcare operations dashboards designed to handle sensitive patient data and support high-traffic production environments. These systems are typically built around strict access control, audit logging, and healthcare-oriented data workflows to ensure reliability and data integrity. In these applications, I have integrated scheduling systems, EHR-style workflows, secure messaging between patients and providers, as well as third-party services such as payment gateways, insurance-related billing flows, and external healthcare APIs. Across these projects, I have consistently applied compliance-aware architecture principles, including role-based permissions, encrypted data handling, and structured audit trails to support healthcare-grade requirements and operational transparency. ► Complex Web Workflows: • Multi-role dashboards for agents, managers, and clients with dynamic permissions • Real-time chat, notifications, and task workflows to streamline operations • Integrated payment flows with Stripe and PayPal, including subscription models and usage-based billing • Analytics pipelines to track engagement, property trends, and lead conversion metrics ► Scalable & Optimized Architecture: • Server-side rendering and static generation in Next.js for speed and SEO • API design using GraphQL, REST, and WebSockets for live updates • Cloud-based solutions leveraging AWS, Firebase, and Supabase • CI/CD pipelines using GitHub Actions and automated deployment workflows ► Tech Stack: • Frontend(SaaS Product Layer): Next.js, React, TypeScript, TailwindCSS, Chakra UI • Backend(MVP & API Layer): Node.js, Express, NestJS, Python, FastAPI, Serverless Functions • SaaS Data Layer(Multi-tenant ready systems): Supabase, MySQL, PostgreSQL, MongoDB, data modeling for SaaS products • DevOps & Scaling(Production-ready MVPs): Vercel, AWS, Netlify, Docker, GitHub Actions, CI/CD pipelines • Product Integrations (Revenue & Growth systems): Stripe billing, third-party APIs, auth systems (JWT, OAuth), analytics tools If you are building a Healthcare SaaS platform, marketplace, or any scalable web app and need an engineer who has shipped full-stack solutions end-to-end, not just studied them , let’s talk. I am selective about the projects I take on, and I’d be glad to review your requirements and tell you exactly how I’d approach your MVP or product launch. ► Keywords: Healthcare SaaS Development, Property Management Software Development, MLS Integration & IDX Integration, Multi-Tenant SaaS Architecture, SaaS MVP Development, Full-Stack Web Development, Next.js Development, React.js Development, TypeScript Development, Node.js Development, NestJS Development, Serverless Application Development, API Development & Integration, REST API Development, GraphQL API Development, WebSocket Real-Time Applications, Dashboard Development, Admin Panel Development, CRM Integration, Stripe Payment Integration, PayPal Payment Integration, Subscription-Based SaaS Platforms, Property Analytics Dashboards, Lead Management Systems, AI-Powered Recommendation Systems, Predictive Analytics Applications, Healthcare Lead Scoring Systems, AWS Cloud Development, Supabase Development, Firebase Development, PostgreSQL Database Design, MongoDB Development, Docker Deployment, CI/CD Pipeline Development, GitHub Actions Automation, SEO-Friendly Web Applications, Server-Side Rendering (SSR), Static Site Generation (SSG), Responsive Web Design, Progressive Web Applications (PWA), Enterprise Web Application Development, Marketplace Platform Development, Business Process Automation, SaaS Product Architecture, Scalable Web Application Development, Startup MVP Development, Product Engineering, Cloud-Native Application Development, Data Privacy & GDPR Compliance, Secure Authentication & Authorization, Technical Architecture Consulting

🚀 Frontend Developer specializing in high-performance React, Next.js, and React Native applications — building fast, refined, and reliable interfaces for web and mobile. I help companies deliver polished digital products that combine technical robustness with exceptional user experience. With over three years of professional experience, I have contributed to applications across e-commerce, healthcare, artificial intelligence, and enterprise systems (ERP, CRM, MES), taking ownership of work from architectural design through to production deployment and ongoing optimization. My focus is on writing clean, maintainable, and scalable code, supported by a strong TypeScript foundation and a keen eye for detail in both interface design and interaction quality. 🎯 Core areas of expertise: 1) ⚛️ Web application development with React and Next.js, including SSR, routing, and performance optimization 2)📱 Cross-platform mobile development with React Native (CLI and Expo), maintaining parity with web products 3) 🧩 Design and implementation of reusable, scalable UI component systems using MUI, Ant Design, Tailwind, and SCSS 4) ✨ Advanced animation and motion design (GSAP, Framer Motion, Reanimated) for engaging, premium interfaces 5) 🔐 Secure API integration, authentication flows (2FA, Google, Microsoft, Firebase, Supabase), and complex forms, tables, and dashboards 6) 🌍 Full application localization and multi-language support 💼 Professional approach: ✅ End-to-end feature ownership, from design handoff to production release ✅ Experienced collaborator within Agile (Scrum) teams, including code reviews and developer onboarding ✅ Clear, consistent communication and a commitment to dependable delivery 🛠️ Technical proficiencies: JavaScript, TypeScript, React, Next.js, React Native, Redux Toolkit, Zustand, MobX, SCSS, Tailwind, Ant Design, Material UI, GSAP, Framer Motion, Firebase, Supabase, Axios, Jest. 📩 I welcome the opportunity to discuss your project requirements and recommend the most effective approach to bringing it to production. I am available for fixed-price, hourly, and long-term engagements, and I respond promptly to all inquiries.

Hi, I'm Kamil — a full-stack engineer who turns ideas into web apps that actually run in production, not just demos. I work with Next.js + Supabase, AI-native with Claude Code. I've shipped two full products solo: FitCore (live SaaS for fitness coaches) and LeadFlow (AI automation for dental clinics) — in weeks, not months. I keep production code correct the boring way: plan first, small reviewable diffs, verify against real input before merge. What I build: • SaaS platforms (landing + dashboard + client portal + auth) • Multi-tenant apps with Supabase RLS, auth & Stripe payments • AI agents & automation systems (autonomous workflows, API integrations) • Admin panels & internal tools • High-converting landing pages (SaaS, coaching, local business) Recent projects: → FitCore — full SaaS for fitness coaches (landing + coach dashboard + client portal, built from scratch) → LeadFlow — AI automation system for dental clinics (lead capture, qualification, CRM integration) → AI Bookkeeping Agent — autonomous accounting agent for a private client (Next.js + Supabase + Claude, QuickBooks integration) Why clients work with me: • I ship end-to-end, solo — from database schema to deployed UI • Modern AI-native workflow (Claude Code, Cursor) — fast, without cutting quality • Clear communication, no ghosting, no surprises • Comfortable in large existing codebases — read first, change second, never assume the framework behaves like your last project My Claude Code workflow and multi-tenant Supabase patterns are public on my GitHub — real engineering discipline, not just "I use AI." If you need someone who can take an idea and turn it into a working product — let's talk. Tech stack: Next.js (App Router), TypeScript strict, React, Tailwind CSS, shadcn/ui, Supabase (Postgres, Auth, Storage, RLS, Edge Functions, Realtime), Stripe, Vercel, Claude API, Claude Code, Node.js, REST APIs

I specialize in: - 🧑‍💻 Software Development [ Games/Plugins/Macros/Bots ] - 🦗 Minecraft Development [ Minigames/Networks/Permissions etc.] - 🤖 Discord [ Servers / Bots / Connecting various platforms with discord ] Worked with (directly or indirectly): - Horda Konopa - Owner - One of the biggest PL discord servers (in peak 200k members) - BassFace - Project Manager - I've handled and managed project on behalf of BassFace for Jafa (australian charity org)