I’m a Senior Full-Stack Engineer with extensive experience building reliable, scalable web applications from the ground up. I help clients turn complex ideas into production-ready systems that are fast, maintainable, and built to last. I specialize in working across the stack — from well-designed backend APIs and data models to clean, responsive front-end interfaces — with a strong emphasis on code quality, performance, and real-world reliability. What I bring to your project: 1. Backend expertise: Node.js, TypeScript, REST APIs, background jobs, data synchronization, third-party integrations 2. Frontend expertise: modern JavaScript frameworks, clean UI architecture, responsive and user-friendly interfaces 3. System design: scalable architectures, clear API contracts, and maintainable codebases 4. Problem-solving: breaking down ambiguous requirements, handling edge cases, and delivering practical solutions 5. Ownership: I take responsibility for features end-to-end, not just isolated tasks I’m particularly strong at projects that require: - Integrating multiple services or APIs - Handling complex business logic or data flows - Improving or stabilizing existing systems - Building MVPs that are ready to scale Clients appreciate working with me because I communicate clearly, think ahead, and deliver dependable results without constant hand-holding. If you need a senior engineer who can quickly understand your product, make solid technical decisions, and execute with precision — I’d be glad to help.

✅ Full-Stack Developer with the badge ✅ Before Time Delivery Hello, I am a Full Stack developer having 6+ years of experience with multiple technologies. The client usually explains to me what they want to accomplish and I will explain the solution and develop it. I am pretty much confident with my talent and knowledge which I achieved in the past working on many projects based in different industries. I have developed several applications from scratch but at the same time, I manage and update the client’s existing projects also as I have outstanding debugging skills. I'm very proficient in working with the following technologies. ✅ Web Scraping, Automation, Data Cleaning, Data Fetching. ✅ Front-end technologies: React.js/Redux, Next.js, ES6, JS, HTML5, CSS3, Bootstrap ✅ Back-end technologies: Node.js, Golang, Django, Python, Nest. ✅ Database : MongoDB, Postgresql, MySql, Mssql, Nosql ✅ Hosting: AWS, Google Cloud, Heroku, Digital Ocean, Azure ✅ Other: CI/CD, RabbitMQ, GraphQL ✅ API integrations: Paypal, Stripe, Authorize.net, Braintree, Facebook, Twitter, Gmail, and other third-party APIs My main goals when working with you are simple: - Clear and consistent communication. I make myself available during all US business hours to provide status updates, answer and ask questions, and discuss the project. Openness, trust, and friendliness have been the keys to success in my work. My customer satisfaction is my utmost priority and I will not rest till you are satisfied! I am resilient and professional, and I will do my best possible work every time and for every task Thanks.

Why you should hire me? 1. I'm honest and fair, I will not steal your time, so I hope you are too. 2. I'll treat your project like my own, I also sometimes give non-technical opinions, especially when your project interests me. 3. I'll "carefully" write high-quality code that is clean and stupidly simple, I'll not try to complete a task just for the sake of finishing it. 4. I can easily adapt and learn new technology. I'm a Fullstack Developer with over 9 years of experience specializing in Frontend Development. So far, I have worked in the fintech and gaming industry. I have helped clients who are veterans in the industry, such as Take-Two Interactive, PT. Dirgantara Indonesia (Indonesian-aircraft Industries), and BNI (National Bank of Indonesia). I've built various proprietary web & and desktop applications such as: - Legal Assets Review System, a collaborative web app to help examine game assets. - Player portal, user-facing web for players to register, browse in-game items, download game launcher, etc. - An admin portal and dashboard app for a game company to manage users, games, virtual items, currencies, entitlements, etc. - Game launcher, desktop app to download the game files, and act as a second player portal. - Appointment system, web app to order queues online I am also responsible for creating and maintaining various tools to help the development process, for example: - Typescript SDK generator - Form management library - Common UI components - Data table component with fetching and caching abilities - Player portal and Game launcher UI customizer - Simple feature flagging library Languages: - Javascript/Typescript - PHP - Python Frontend: - React.js - Next.js - Svelte - SvelteKit - Tailwind CSS - Ember.js - JQuery - Bootstrap Backend: - Node.js - Express.js - Koa - Django - Laravel - Yii2 - Codeigniter - MySQL - PostgreSQL - MongoDB CMS/BaaS: - WordPress - Strapi - Firebase - Pocketbase - Supabase Others: Rollup, Vite, Webpack, Docker

With over 13 years of experience and 14,000+ hours on Upwork, I create Ruby on Rails web applications that are not only functional but built to last. Able to take a project at any stage — from an initial idea to a complex, production-ready system — and manage every aspect: backend architecture, integrations, performance optimization, and long-term maintenance. I have successfully delivered large-scale projects across multiple domains — from a hotel booking engine to a fintech platform for investors, a job search and recruitment platform and many others. I leverage modern tools such as GitHub Copilot for documentation, autocomplete, code optimization, and SQL query improvements, while using AI assistants like ChatGPT and Gemini to speed up research and handle small tasks such as generating regular expressions. I also understand the importance of AI in boosting development speed, productivity, and automation, and apply it thoughtfully to enhance my workflow without compromising code quality. Whether you need to launch a new product, rescue a struggling codebase, or scale your existing platform, I bring the skills, reliability, and insight to get it done right the first time.

As a seasoned Front-End Engineer, I bring over seven years of expertise to the table. I am well-versed in a variety of technologies, including ReactJS, NextJS, EmberJS, Angular & CSS/SCSS. Though I also have some hands on experience on NodeJS, Ruby On Rails and some Java. Regardless of the technologies, I'm more of a product based developer, understanding requirements, needs, and end users, in order to adapt development accordingly. My five years working on SaaS products have provided me with a valuable understanding of business needs and a knack for finding efficient solutions to complex problems. I have a proven track record of delivering results, both in creating new products from scratch and in maintaining existing ones. Collaboration and knowledge-sharing are key components of my work ethos. A team player who is always willing to help out, yet also able to deliver results independently. I am driven by challenges, be that a complex feature, code refactor, or just figuring out what to implement to meet market goals. It is a product in the end, all resolves towards it. In summary, my expertise is that of a Front-End lead that uses the skills of coding and product understanding to deliver results, in a timely manner. A believer of 80-20 rule (Pareto principal)

I'm the engineer who built LILA (getlila.one), a privacy-first AI database assistant running in production today. When I quote you on a RAG pipeline or multi-agent build, I'm quoting from work I have actually shipped, not a course I watched last month. SERVICES I OFFER - Production RAG (Retrieval-Augmented Generation) systems (Qdrant, pgvector, Pinecone, OpenSearch) - Multi-agent orchestration (LangChain, LangGraph, custom frameworks) - Natural-language-to-SQL with safety guardrails for non-technical teams - Self-hosted LLMs (Large Language Models) for healthcare, finance, legal, government - AI integration into legacy enterprise stacks (PHP, Laravel, Node, .NET) - Production rescues: failing AI projects audited and put back on track WHAT YOU GET WORKING WITH ME - A one-page architecture document before any code is written - Weekly demos so nothing surprises you at delivery - Production-ready code, not notebook scripts - Documentation a future engineer can pick up - Honest pushback when AI is the wrong tool for the job WHY YOU CAN TRUST THE WORK - 22 Upwork jobs delivered, $300K+ earned, 7,380 hours - Top Rated Plus (top 3% of Upwork talent) - 3-year engagement with Testable io as senior Ember.js engineer - (two 5-star reviews) - Selected by Upwork Enterprise Client as subject matter expert for AI feature research - Founder, AALA IT Solutions (8 years, 160+ enterprise clients) - Invited speaker, EmberConf 2021 HOW TO START Send a message describing what you are trying to build, what you have already tried, and what 90-day success looks like. I will reply with a clarifying question or a short scope within a business day. --- The signal that matters most: long-term engagements and consistent 5-star ratings across 22 jobs.

Hello! About me: - DDD/Clean Architecture methodology adherent - Open source contributor (Laravel at the moment) - Made a game in assembler code for ZX Spectrum in 1994 I have experience with: - Backend: PHP (Laravel, Yii2), NodeJS (Express) - Frontend: JavaScript, Typescript (Next, React, Vue) - Database: SQL (MySQL, PostgreSQL, MSSQL, Sybase, Interbase/Firebird), NoSQL (Firestore, Mongo) - Localization - CI/DI - Google Cloud Platform (Cloud Firestore, Cloud Functions, Hosting, and other) - Docker, docker-compose - Role-based Access Control (RBAC) / Attribute-based access control (ABAC) - Tailwind, Materialize, Bootstrap, Tachyons CSS - Linux (Apache, Nginx, bash, etc) I started programming in assembler code for Z80 CPU and Basic at 15 years old :) Then Turbo Pascal 5.5, then 7 years with Delphi with Interbase, Paradox, FoxPro, Adaptive Server Anywhere, VBA, and now PHP and JS frameworks. Now I work with PHP + JS with modern frameworks and I like it!

👍🏻 "Working with Artur was fantastic. He took full ownership of our project and delivered vital improvements for our open source libraries. We got over 1,000 new signups after rolling out the new features." - Andrew H., CTO of a company servicing SalesForce, Heroku, twitch, BlueApron, Twilio and Kayak 👍🏻 "You're worth your weight in gold! Thanks to the development improvements you introduced our team is two times more productive." - Peter C., CTO of a San Francisco-based website averaging 1M+ visitors a day 😖 Are you not sure how to build the technology to deliver your service to thousands of users? 😬 Are your customers leaving you because the bugs on your website are just piling up? 😡 Is it too hard to find high-quality developers who don’t leave your projects in a mess? Welcome! I'm a tech entrepreneur and a master developer. I build internet businesses from scratch and help companies create profitable software every day. I’ve helped over 30+ companies from Silicon Valley, London, New York City and other tech-bubble centers launch Software as a Service. Over 8 years in the web development industry has taught me the secret ins-and-outs of the technology world. 💰 How can I help you? ✅ create your Software as a Service platform ✅ build a payment ready website that will bring you recurring revenue every month ✅ integrate you with Stripe, MailChimp, Facebook, Twitter, LinkedIn, Pinterest and more ✅ cut your operations costs by setting up automation software, CRM and more ✅ build your Shopify store from ground up (or any other e-commerce) 🤝 What can you expect from me ➡️ I deliver what you expect and I deliver on time ➡️ a long-term business relationship (I do not accept one-off projects!) ➡️ no theoretical nonsense; I focus on what makes cash for your business 💰🤝💻 If you send me a message we will set up a call. You’ll tell me what you’re trying to do, what your current obstacles are and I will tell you how to build it. Let’s get in touch!

✅ 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 | $𝟭𝗠+ 𝐄𝐚𝐫𝐧𝐞𝐝 | 𝟮𝟰𝐊+ 𝐇𝐨𝐮𝐫𝐬 | 𝟱𝟎+ 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐒𝐞𝐫𝐯𝐞𝐝 ✅ 𝐒𝐞𝐧𝐢𝐨𝐫 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐑𝐮𝐛𝐲 𝐨𝐧 𝐑𝐚𝐢𝐥𝐬, 𝐑𝐞𝐚𝐜𝐭, 𝐏𝐲𝐭𝐡𝐨𝐧, 𝐀𝐈/𝑴𝑳 ✅ 𝟭𝟬𝟬% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 | 𝐓𝐫𝐮𝐬𝐭𝐞𝐝 𝐛𝐲 𝐒𝐭𝐚𝐫𝐭𝐮𝐩𝐬 & 𝐄𝐧𝐭𝐞𝐫𝐩𝐫𝐢𝐬𝐞𝐬 I am Full Stack developer with extensive experience in building high quality applications. My experiences range from to building scalable applications for the financial services industry to building responsive sites that work well cross browser. 𝐌𝐲 𝐬𝐤𝐢𝐥𝐥 𝐬𝐞𝐭: 𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 𝗶𝗻𝗰𝗹𝘂𝗱𝗲𝘀: React.Js Vue.js Ember js Next js Electon.js 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗶𝗻𝗰𝗹𝘂𝗱𝗲: ROR Shopify MERN Node Python Django 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 𝘄𝗼𝗿𝗸𝗲𝗱 𝗼𝗻: 🏥 Healthcare 📚 EdTech 🧳 Travel 🍱 Food Ordering 💵 Finance 📊 Data Dashboards 💻 Personal Websites Let’s discuss how I can help build, scale, or optimize your web application. Send me a message today and let’s turn your ideas into reality.

I build production AI Apps and Saas platforms for founders, Start-ups and people who needs to move fast. Founders and early-stage startups hire me when they need a production-ready AI app or SaaS platform live fast not in months, but in weeks. I've built an AI-powered home listings platform for a real estate startup in 5 days, migrated a founder's Base44 SaaS app from demo to scalable multi-tenant architecture in 3 days, and resolved a critical Supabase/PostgreSQL backend failure for a live app the same day it was reported. If you need a real product and website fully deployed, user-ready, and generating revenue from day one that's exactly what I build. I handle the full stack so you don't have to manage any of it: frontend, backend, database architecture, API integrations, AI features, and cloud deployment. Your customers can sign up, pay, and start using your platform immediately while you focus on growing your business instead of managing tech stacks. 𝗜 𝘀𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘇𝗲 𝗶𝗻 𝘁𝗵𝗿𝗲𝗲 𝗮𝗿𝗲𝗮𝘀: - AI-Powered Applications: LLM integrations, AI agents, intelligent automation - SaaS Platforms: Multi-tenant architecture, scalable backends, Stripe payments - MVP Development: Rapid prototyping, production-ready code, ready for use to help your business 📌AI-powered home listings platform with intelligent search built and live in 5 days (Base44 + Replit) 📌Base44 SaaS app migrated from demo to scalable multi-tenant architecture 3 days (React + Supabase) 📌Luxury real estate mobile app redesigned and fixed clean, responsive UI delivered in 72 hours (Lovable + Replit) 📌Replit app with broken Supabase/PostgreSQL backend diagnosed and fully resolved same day 📌Full AI SaaS platform (Apickle AI) 6 weeks of continuous feature delivery, zero downtime 𝗪𝗵𝗮𝘁 𝘆𝗼𝘂 𝗴𝗲𝘁 𝘄𝗶𝘁𝗵 𝗲𝘃𝗲𝗿𝘆 𝗽𝗿𝗼𝗷𝗲𝗰𝘁: ✅ Fast, scalable frontend Next.js and TypeScript, mobile-first, built to handle growth without rewrites ✅ Secure database architecture Supabase and PostgreSQL with proper row-level security, so your users' data is protected from day one ✅ Full API and payment integration Stripe, CRMs, webhooks, MCP (Model Context Protocol), and third-party tools connected and working ✅ AI-powered features LLM integrations, AI agents using LangChain and CrewAI, intelligent automation that reduces your operational costs ✅ Live deployment Vercel, AWS, or Railway, stable infrastructure ready for traffic spikes from day one, not "works on my machine" 𝗠𝘆 𝘀𝘁𝗮𝗰𝗸: 💢AI builders: Replit Agent, Base44, Lovable, Claude Code, Cursor, Windsurf, v0.dev 💢Frontend: Next.js, TypeScript, React, Tailwind CSS 💢Backend & database: Supabase, PostgreSQL, Node.js 💢Deployment & integrations: Vercel, AWS, Railway, GitHub, Stripe API, MCP You get a secure, fully deployed application/ website built on a solid foundation. Are you ready to stop prototyping and start scaling your business with a live app or website? Send me a message, and let’s talk about how to get your project live. 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀 React, Node.js, API Integration, JavaScript, Next.js, React Native, Android App Development, Mobile App Development, PostgreSQL, API, Web Development, Full-Stack Development, Web Application, TypeScript, OpenAI API, REST API, PostgreSQL, SaaS, Fintech Integration, Stripe, Node.js, Supabase, Front-End Development, Back-End Development