Are you building a marketplace, SaaS platform, eCommerce store, or mobile app that needs a rock-solid payment system? You've just found your expert. I specialize in Stripe Connect — the go-to solution for multi-vendor marketplaces, platform payouts, split payments, and connected account onboarding. Whether you need Standard, Express, or Custom Connect accounts, I'll architect the right flow for your business model. STRIPE & PAYMENT GATEWAY SERVICES ▸ Stripe Connect (Standard / Express / Custom) ▸ Stripe Checkout, Stripe Elements & Payment Intents API ▸ Stripe Billing — subscriptions, usage-based pricing, invoicing & dunning ▸ Stripe Radar — fraud prevention, custom rules & risk scoring ▸ Stripe Terminal — in-person payment integration ▸ Payment gateway integration (Stripe, Braintree, PayPal, Adyen, Square) ▸ One-time payments, split payouts & platform fee automation ▸ ACH, SEPA, BACS & multi-currency payment flows ▸ Failed payment recovery & smart retry logic ▸ Real-time webhook automation & event-driven architecture SECURITY & COMPLIANCE ▸ PCI-DSS compliant payment architecture ▸ 3D Secure (SCA / Strong Customer Authentication) ▸ Card tokenization & secure vault storage ▸ Encrypted webhooks & endpoint signature verification ▸ KYC/AML compliance for Stripe Connect platforms AI-ENHANCED PAYMENT SYSTEMS I bring hands-on AI experience to modern payment engineering: ▸ AI-assisted fraud detection workflows with Stripe Radar ▸ LLM-powered financial reporting & revenue dashboards ▸ Intelligent churn prediction & automated recovery triggers ▸ AI-driven smart retry logic for failed payments ▸ Automated dispute management using machine learning PLATFORMS & TECH STACK ▸ Node.js, Python, PHP, React, Next.js ▸ REST APIs, GraphQL & webhook integrations ▸ AWS, GCP & serverless payment backends ▸ Shopify, WooCommerce & headless eCommerce ▸ B2B SaaS, marketplace platforms & mobile apps (iOS/Android) WHY CLIENTS HIRE ME ✔ Certified Stripe integration expertise ✔ End-to-end ownership — from architecture to go-live ✔ Optimized checkout flows that reduce cart abandonment & maximize conversion ✔ Scalable, low-latency payment infrastructure built for growth ✔ Clear communication and on-time delivery Let's build a payment system that works flawlessly and scales with your business. Send me a message — I'm ready to discuss your project.

𝟏𝟐+ 𝐘𝐞𝐚𝐫𝐬 | 𝐒𝐚𝐚𝐒 𝐒𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐬𝐭 | 𝐄𝐑𝐏, 𝐌𝐨𝐛𝐢𝐥𝐞 & 𝐖𝐞𝐛 𝐀𝐩𝐩𝐬 | 𝐍𝐞𝐭𝐰𝐨𝐫𝐤 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭 (𝐂𝐢𝐬𝐜𝐨/𝐌𝐢𝐤𝐫𝐨𝐓𝐢𝐤)| 𝐅𝐫𝐞𝐞 𝐂𝐨𝐧𝐬𝐮𝐥𝐭𝐚𝐧𝐜𝐲 Is your business struggling with outdated software, unstable SaaS platforms, or insecure networks? I help startups, SMEs, and enterprises build future-ready digital ecosystems that combine: - Custom POS & SaaS platforms - ERP/CRM systems tailored to your workflows - Scalable mobile & web apps - Secure enterprise networks & DevOps 💡 My 3-Step Success Framework 1. Discovery & Planning – Understand your business goals, workflows, and target users 2. Design & Development – Build feature-rich, user-friendly, and scalable platforms 3. Delivery & Optimization – Secure, optimize, and provide long-term support Key Expertise 1. SaaS Platforms - End-to-end POS with receipt printers, payment integrations (Stripe, PayPal, Adyen) - Real-time analytics, offline sync, vendor integration - SaaS solutions for retail, restaurants, healthcare, logistics & distributors 2. Web & Mobile App Development - React.js, Next.js, Laravel, .NET Core - Flutter & React Native mobile apps (push notifications, geolocation, dashboards) SEO-friendly, responsive web portals & customer engagement tools ✅ MVP Development for Startups Fast-track MVPs with React, Node.js, Flutter, Firebase, PostgreSQL Scalable backend + investor/demo-ready prototypes ✅ ERP, CRM & CMS Solutions Inventory, automation, role-based dashboards Tailored ERP/CRM for retail, supply chain, healthcare, education, finance ✅ Cloud & DevOps CI/CD pipelines, Kubernetes, Docker, AWS, GCP Server security, Linux hardening, auto-scaling ✅ Network Engineering & Security Cisco & MikroTik (VLANs, Firewalls, VPNs, VoIP, Mesh Wi-Fi) Enterprise network design for hotels, retail, data centers ✅ Emerging Tech (IoT + AI) IoT-ready POS (barcode scanners, RFID, kiosks) AI integrations (OpenAI, TensorFlow, analytics dashboards) Tech Stack Frontend: React.js, Next.js, AngularJS, TypeScript Backend: Node.js, PHP, Laravel, .NET Core, Python Databases: PostgreSQL, MySQL, MSSQL, Firebase Mobile: Flutter, React Native Cloud/DevOps: AWS, GCP, Docker, Kubernetes, CI/CD Networking: Cisco, MikroTik, pfSense Servers: Ubuntu, Debian, Windows Server, VMware ✅ Why Work With Me? ✔️ Dual expertise in Software + Network Infrastructure ✔️ 12+ years delivering POS, SaaS, ERP & secure enterprise systems ✔️ Hands-on across multiple industries & tech stacks ✔️ Certified CCNA | MTCNA | MTCRE | MCSE ✔️ Transparent, fast, and reliable long-term partner 📅 Let’s Chat! Book a free consultation to discuss your POS system, SaaS MVP, ERP solution, or enterprise infrastructure. I’ll help you design, develop, and deploy scalable solutions that drive business growth.

Hiring a different freelancer per task stops being cheap around task three. Backend, frontend, mobile, QA, and PM under one roof. 💳 Stripe · Adyen · Mollie · Payone ⚙️ Laravel/Vue/Node/Next.js/Express.js/React/React Native/Supabase/Postgress/MySql and a lot more 100% JSS · $300K+ earned over 6 years My work covers the full spectrum of Full Stack Developer responsibilities. As a Backend Developer, I architect scalable APIs and database structures using PHP (Laravel), Node.js, and Python. On the frontend, I build with React, Vue, and Angular. This Full Stack Developer versatility extends to React Native for mobile, where I function as a Mobile App Developer, and to custom WordPress solutions, where I serve as a WordPress Developer. Whether it's a Python Full Stack Developer scenario with Django/FastAPI or a .NET Full Stack enterprise environment, I adapt. ⚙️ What I Do Best Full Stack Developer ownership from architecture to launch and support. Backend Developer focus on SaaS platforms, booking engines, and internal tools. Full Stack Developer React Node ecosystems: interactive dashboards and complex workflows. WordPress Full Stack builds that are fast, secure, and easy for marketing teams to edit. Mobile App Developer delivery via React Native, fully integrated with custom backends. Senior Fullstack Developer guidance for integrations: CRMs, ERPs, payment gateways, and custom APIs. 🚀 Real Project Examples 📦 Self-Storage Ecosystem (EU) As lead Full Stack Developer and Backend Developer, I built a booking tool with ERP and payment automation (Full Stack Developer Laravel stack with Vue). This Full Stack Developer work took online reservations from zero to 170+ monthly and tripled signed contracts. 🎓 EdTech Matching Platform As Senior Fullstack Developer, I delivered three interconnected applications (Laravel/Vue) with a matching engine and accounting integrations. The Full Stack Developer React Node architecture increased sales by 190% year-over-year while keeping operations lean. 🐾 Social Utility App for Pet Owners Acting as both Mobile App Developer and Backend Developer, I built a React Native app and Laravel backend with maps, social features, and AI helpers. This Full Stack Developer project seamlessly blended native mobile and web. 📊 SEO Analytics SaaS In a Python Full Stack Developer role, I designed microservices with FastAPI and Node.js for high-load APIs and React frontends. The Full Stack Developer architecture processes thousands of active users reliably. 🧹 Cleaning Service Group Automation As a WordPress Developer and Full Stack Developer PHP expert, I built a custom CRM/ERP with scheduling and telephony integrations. The Web Developer and Backend Developer work automated coordination across three brands. 🛠 Tech I Use Daily Backend: PHP (Laravel, Filament), Node.js, Python Frontend: React, Vue, Nuxt, Alpine.js CMS: Custom WordPress Full Stack themes and plugins Mobile: React Native (I function as a Mobile App Developer) DB: MySQL, PostgreSQL, Redis DevOps: AWS, Docker, CI/CD APIs: Stripe, Mollie, Google API, OpenAI 🤝 How I Work ✅ I own delivery as a Full Stack Developer: architecture, code quality, and deadlines. ✅ I'm transparent about scope and risks as your Backend Developer partner. ✅ I take Full Stake ownership of outcomes, not just outputs. ✅ I can join ongoing projects or build from zero to scale. ✅ I act as a Web Developer and Senior Fullstack Developer who bridges technical execution with business impact. 💡 Why Clients Choose Me as Their Full Stack Developer Beyond writing clean code, I function as a true Full Stack Developer consultant. I've rescued stalled projects, modernized legacy PHP systems, and transitioned businesses from manual spreadsheets to fully automated WordPress Full Stack portals. As a React Developer at heart, I ensure every interface is intuitive and fast. Whether you need a Mobile App Developer for a companion app or a Backend Developer to untangle complex data flows, I bring Full Stack Developer React Node expertise and a Full Stake mindset to every engagement. My experience across .NET Full Stack environments and as a Python Full Stack Developer ensures I can evaluate the right tool for your specific business challenge, not just the one I know best. I'm comfortable acting as a fractional CTO or a Senior Fullstack Developer embedded with your existing team. As a Full Stack Developer and Backend Developer, I deliver React, Node.js, PHP, Mobile App Developer results, WordPress Developer sites, Python Full Stack Developer APIs, .NET Full Stack insights, and Full Stake commitment. Senior Fullstack Developer ready.

I build enterprise platforms that last — not prototypes that get rewritten. My longest engagement is 6+ years with a single client, growing from 4 modules to a 9-module field operations platform. That's the kind of work I'm looking for. Recently I've been focused on AI systems engineering — RAG pipelines, LLM API integration, and WhatsApp-based AI agents running in production on SaaS platforms. 𝐖𝐡𝐚𝐭 𝐈 𝐁𝐮𝐢𝐥𝐝 Complex, long-term platforms — not one-off fixes or quick integrations. My clients are typically building something serious: a multi-tenant SaaS, an enterprise operations platform, or a system where AI needs to work reliably in production, not just in a demo. They need an architect who can own the technical direction end to end, communicate clearly with non-technical stakeholders, and stay consistent over years — not months. If you have a well-defined short-term task, I'm probably not the right fit. If you're building something that needs to scale and last, let's talk. 𝐑𝐞𝐜𝐞𝐧𝐭 𝐏𝐫𝐨𝐣𝐞𝐜𝐭 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬 ✦ Engineering Field Operations (Calgary, Canada): Built a 9-module enterprise platform from the ground up for an automation engineering firm. Modules include commissioning completion, project planning with WBS and SPI tracking, asset lifecycle management, document control with version management, safety management with FLHA workflows, and PDF generation engine. 6+ years. Stack: .NET Core, Angular, SQL Server, Azure, E-Signature API. ✦ AI & Platform Engineering (GeoWise): Architected an event-driven automation layer using Azure Service Bus and engineered a RAG pipeline to parse, index, and retrieve data via LLM APIs with conversational memory state management. Integrated WhatsApp Business API for AI-driven client communication and Sadad payment gateway for Gulf-region bookings. Stack: .NET 8, Next.js, Azure Service Bus, Azure Functions, SQL Server, OpenAI API, WhatsApp Business API. ✦ FinTech (InstaPaid, Denmark): Architected payroll system integrations and core workflows using .NET 8, C#, and Azure Functions for a GDPR-compliant earned wage access platform. Integrated with Danske Bank, Planday, Zenegy, Intect, SameSystems, and Aiia. Stack: .NET 8, React, SQL Server, Azure B2C, Azure Functions. ✦ Healthcare (Amaze PBC): Built and integrated Physician Support, EHR integration, and Prescription Tracking. Stack: ASP.NET Core, SignalR, Azure. ✦ Logistics (RPM Moves): Built 10+ microservices for a North American vehicle logistics platform. Salesforce API, DAT API, Central Dispatch integration, Docker, Kubernetes, Azure DevOps, CI/CD, Elastic Search logging. Stack: .NET Core/5/6/7, React, Redux Toolkit, SQL Server. ✦ E-commerce / SaaS (Holidog, Hector Kitchen): Payment gateway integration (Stripe, Adyen), multilingual platforms, complex subscription management. Stack: .NET Core, Angular, React, MVC. 𝐂𝐨𝐫𝐞 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 / 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞 ✔️ Architectural Patterns: Microservices, CQRS, TDD, DDD, UOW, Repository ✔️ C#, ASP.NET Core / MVC / Web API ✔️ AI Systems: RAG, Vector Search, Semantic Retrieval, Context & State Management ✔️ Data Persistence: Entity Framework, NHibernate, LINQ ✔️ Database: SQL Server, MySQL, MongoDB, RethinkDB, Redis, Elastic Search 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 / 𝐔𝐈 ✔️ Angular (up to v18), ReactJS, Next.js ✔️ TypeScript, JavaScript, jQuery ✔️ State Management: Redux (Ngrx, angular2-redux) ✔️ UI: HTML5, CSS3, Bootstrap, LESS/SCSS, Kendo UI 𝐂𝐥𝐨𝐮𝐝 / 𝐃𝐞𝐯𝐎𝐩𝐬 ✔️ Microsoft Azure: Functions, Service Bus, Queues, Blob Storage, B2C, Document DB ✔️ Containerization: Docker, Kubernetes / AKS ✔️ CI/CD: Azure DevOps, AWS, Octopus, GitHub Actions ✔️ Code Management: Git, GitLab, Bitbucket, TFS 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 MC ID: 13222222 Microsoft Certified Solutions Developer (MCSD) Microsoft Certified Solutions Associate (MCSA) I work best on complex, long-term engagements where architecture decisions matter and consistency of delivery over time is what the client actually needs. If that sounds like your project, let's talk.

Hi there 👋🏻 I am Alexey 🙋🏻‍♂️ Nice to meet you! 🚀Profound expertise in Ecommerce 🚀Bachelor's degree in Computer Science 🚀Years of experience in long-term projects for well-known online shops 🚀Fluent English 🚀Ready to keep up with your time zone 😎Hello, I am an experienced Ecommerce Developer with a proven track record of successful Ecommerce development for online shops all over the world. I am an expert in implementation of valuable technical features, first-class support and API integration for Ecommerce platforms 👌 Having worked with businesses of different scales and domains, I help them to establish business processes and make the webstore management process as easy, transparent and efficient as possible 🤟 ((My primary technical skills)) ⭐️Zend ⭐️Laravel ⭐️Symphony ⭐️PHP ⭐️User authentication ⭐️Authorization between multiple systems, servers, and environments ⭐️Proficiency with Git ⭐️SQL database ⭐️Back-end programming languages ⭐️Web services (SOAP, XML-RPC, REST) ⭐️High-quality technical documentation I always deliver high-quality solutions on time and within budget. My English is fluent and I truly enjoy both verbal and written communication, so no problems with that :) My experience includes working with web services (SOAP, XML-RPC, REST), the ability to author comprehensive technical documentation, and the usage of Linux to maintain and configure Apache/MySQL web servers. Time management skills and the ability to work on different tasks and projects help me to work on my own as well as part of a team. Apart from professional growth, I enjoy traveling to foreign countries, discovering new cultures✈️, sports activities⚽️, and listening to music🎻 😃I would be really glad to help you with your online store, please feel free to contact me anytime!

Whether you're validating an MVP, scaling an existing SaaS platform, or planning your next product — message me "ARCHITECT" for a free 30-min technical review. We'll review your architecture, identify technical risks, and outline the fastest path to production. No sales pitch — just actionable engineering feedback from someone who's shipped production software for a decade. Building a SaaS product, MVP, or internal platform that needs to launch and scale? I help founders turn ideas into production-ready software. With 10+ years of experience, I design, build, and scale full-stack SaaS platforms, secure backends, and modern web applications using Next.js, NestJS, Node.js, and cloud infrastructure — integrating AI only where it delivers measurable business value. I've built B2B SaaS, enterprise ERP systems, e-commerce platforms, and AI-powered applications used by startups, institutions, and growing businesses. I work as a long-term technical partner, helping founders make sound technical decisions from MVP to scale. Before development begins, I focus on reducing risk, avoiding unnecessary complexity, and designing systems built for long-term growth. Whether you're a solo founder or an established product team, I prioritize practical solutions, predictable delivery, and maintainable software. 🚀 FROM IDEA TO PRODUCTION You work directly with the engineer designing and building your product — no unnecessary handoffs. • Product architecture & technical planning • Database design & data modeling • Backend APIs & business logic • Frontend development & UI implementation • Cloud deployment & DevOps • Long-term maintenance & scaling 🔵 CORE EXPERTISE • Full-Stack SaaS Development — Next.js, React, TypeScript, NestJS, Node.js • MVP Development — from idea to launch without unnecessary complexity • Backend Architecture — scalable APIs, queues, performance, and data design • API Integrations & Payments — Stripe, Adyen, Yuno, webhooks, third-party APIs • AI Features & Automation — RAG, LLM integration, AI agents, workflow automation 🔵 TRACK RECORD • Designed scalable multi-tenant SaaS platforms with secure authentication, subscription billing, and APIs built for long-term growth • Helped startups launch production-ready MVPs with architectures designed to support future growth instead of costly rewrites • Built high-traffic e-commerce platforms capable of handling large transaction volumes and complex business workflows • Delivered enterprise ERP solutions that streamlined procurement workflows and reduced manual operations • Integrated AI capabilities—including RAG, LLMs, and agentic workflows—into production software to solve real business problems • Built real-time fleet and transport platforms capable of supporting high-volume operational workloads Full project details and case studies are available in my portfolio. 🟠 WHAT I BUILD → SaaS Platforms & MVPs Multi-tenant SaaS · MVP development · product development · subscription billing · secure authentication · admin dashboards → Full-Stack Web Applications & APIs Next.js · React · NestJS · Node.js · Laravel · REST API · GraphQL → AI Features & Automation AI agents · RAG · LLM integration · workflow automation · vector search → API Integrations & Payments Stripe · Adyen · Yuno · third-party APIs · webhooks · subscription billing → Backend Architecture & Scaling PostgreSQL · Redis · Docker · microservices · queues · cloud architecture · performance optimization ⭐ WHY CLIENTS WORK WITH ME • Architecture before implementation • Business-focused technical decisions • Clean, maintainable code • Clear communication • Long-term scalability—not quick fixes 🟢 INDUSTRIES SaaS • AI/ML • E-Commerce • FinTech • Enterprise ERP • EdTech • Logistics 🔧 TECH STACK Backend: NestJS · Node.js · Laravel · PHP · Express · REST API · GraphQL Frontend: React · Next.js · TypeScript · Tailwind CSS AI & LLM: OpenAI · Anthropic Claude · Ollama · LangChain · RAG · ChromaDB · pgvector · vector search Databases: PostgreSQL · MySQL · MongoDB · Redis Cloud & DevOps: AWS · GCP · Azure · Docker · CI/CD · Nginx · microservices Payments: Stripe · Adyen · Yuno I believe successful software is built on clear communication, transparent planning, and maintainable architecture. I use AI where it solves real business problems—not where it simply adds complexity. 📩 Whether you're validating an MVP, scaling an existing SaaS platform, or planning your next product — send me an invite or message "ARCHITECT" for a free 30-minute technical review. ───────────────────────────────────────────── SaaS Development · MVP Development · Full Stack Developer · Web Application Development · Product Engineering · Software Architecture · API Development · Next.js · NestJS · Node.js · React · TypeScript · PostgreSQL · Redis · Docker · Multi-Tenant SaaS · Technical Consulting · AI Integration · Backend Architect

I'm a 𝗦𝗲𝗻𝗶𝗼𝗿 𝗶𝗢𝗦 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 with 𝟲+ 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 crafting high-performance, secure, and scalable iOS applications. From e-commerce and delivery platforms to AI-driven accessibility, I specialise in building apps that are fast, intuitive, and production-ready. ✅ 𝐂𝐨𝐫𝐞 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 • 𝐢𝐎𝐒 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: Swift, SwiftUI, Combine, Objective-C, Core Data • 𝐀𝐩𝐩 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞: MVVM, VIPER, Clean Architecture • 𝐏𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞: Crash reduction, faster launch times, memory optimization • 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲: Authentication, secure payments (PayPal, Stripe, Adyen) • 𝐂𝐈/𝐂𝐃 & 𝐃𝐞𝐯𝐎𝐩𝐬: GitHub Actions, Jenkins, Bitrise • 𝐋𝐞𝐚𝐝𝐞𝐫𝐬𝐡𝐢𝐩: Squad lead, code reviews, mentoring juniors 📌 𝐍𝐨𝐭𝐚𝐛𝐥𝐞 𝐀𝐜𝐡𝐢𝐞𝐯𝐞𝐦𝐞𝐧𝐭𝐬 🏆 𝐖𝐨𝐧 𝐞𝐥𝐆𝐫𝐨𝐜𝐞𝐫 𝐇𝐚𝐜𝐤𝐚𝐭𝐡𝐨𝐧 for implementing 𝐀𝐈-𝐩𝐨𝐰𝐞𝐫𝐞𝐝 𝐟𝐞𝐚𝐭𝐮𝐫𝐞𝐬 📉 𝐑𝐞𝐝𝐮𝐜𝐞𝐝 𝐜𝐫𝐚𝐬𝐡 𝐫𝐚𝐭𝐞𝐬 𝐛𝐲 𝟑𝟎% using Crashlytics 💳 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐞𝐝 𝐬𝐞𝐜𝐮𝐫𝐞 𝐩𝐚𝐲𝐦𝐞𝐧𝐭𝐬 across fintech and delivery apps ⚙️ 𝐋𝐞𝐝 𝐦𝐢𝐠𝐫𝐚𝐭𝐢𝐨𝐧 to modern architectures, boosting scalability and maintainability 💡 𝐒𝐩𝐞𝐜𝐢𝐚𝐥𝐢𝐳𝐚𝐭𝐢𝐨𝐧𝐬 I’ve developed and led multiple applications across a wide range of industries, including: • 🤖 𝐀𝐈-𝐏𝐨𝐰𝐞𝐫𝐞𝐝 𝐀𝐩𝐩𝐬 (𝐢𝐧𝐜𝐥𝐮𝐝𝐢𝐧𝐠 𝐂𝐡𝐚𝐭𝐆𝐏𝐓-𝐛𝐚𝐬𝐞𝐝 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬) • 🛒 𝐆𝐫𝐨𝐜𝐞𝐫𝐲 𝐃𝐞𝐥𝐢𝐯𝐞𝐫𝐲 𝐀𝐩𝐩𝐬 • 🏠 𝐏𝐫𝐨𝐩𝐞𝐫𝐭𝐲 𝐁𝐮𝐲𝐢𝐧𝐠 / 𝐑𝐞𝐧𝐭𝐚𝐥 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬 • 💬 𝐒𝐨𝐜𝐢𝐚𝐥 𝐌𝐞𝐝𝐢𝐚 & 𝐂𝐡𝐚𝐭 𝐀𝐩𝐩𝐬 • 🎵 𝐌𝐮𝐬𝐢𝐜 & 𝐀𝐮𝐝𝐢𝐨 𝐒𝐭𝐫𝐞𝐚𝐦𝐢𝐧𝐠 𝐀𝐩𝐩𝐬 • 🎥 𝐕𝐢𝐝𝐞𝐨 𝐒𝐭𝐫𝐞𝐚𝐦𝐢𝐧𝐠 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬 • 📸 𝐈𝐦𝐚𝐠𝐞 𝐈𝐝𝐞𝐧𝐭𝐢𝐟𝐢𝐜𝐚𝐭𝐢𝐨𝐧 & 𝐑𝐞𝐜𝐨𝐠𝐧𝐢𝐭𝐢𝐨𝐧 𝐀𝐩𝐩𝐬 • 📚 𝐄𝐝𝐮𝐜𝐚𝐭𝐢𝐨𝐧𝐚𝐥 & 𝐄-𝐋𝐞𝐚𝐫𝐧𝐢𝐧𝐠 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬 • 🧘 𝐇𝐞𝐚𝐥𝐭𝐡, 𝐅𝐢𝐭𝐧𝐞𝐬𝐬 & 𝐌𝐞𝐝𝐢𝐭𝐚𝐭𝐢𝐨𝐧 𝐀𝐩𝐩𝐬 • 🧠 𝐏𝐫𝐨𝐜𝐭𝐨𝐫𝐢𝐧𝐠 𝐀𝐩𝐩𝐬 • 📊 𝐑𝐞𝐩𝐨𝐫𝐭𝐢𝐧𝐠 & 𝐀𝐧𝐚𝐥𝐲𝐭𝐢𝐜𝐬 𝐓𝐨𝐨𝐥𝐬 • 🏢 𝐂𝐮𝐬𝐭𝐨𝐦 𝐄𝐑𝐏 & 𝐂𝐑𝐌 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 • 👥 𝐒𝐭𝐚𝐟𝐟 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭 & 𝐓𝐢𝐦𝐞 𝐓𝐫𝐚𝐜𝐤𝐢𝐧𝐠 𝐀𝐩𝐩𝐬 • 📅 𝐂𝐚𝐥𝐞𝐧𝐝𝐚𝐫 & 𝐒𝐜𝐡𝐞𝐝𝐮𝐥𝐢𝐧𝐠 𝐀𝐩𝐩𝐬 • 🧩 𝐂𝐮𝐬𝐭𝐨𝐦 𝐈𝐧𝐭𝐞𝐫𝐧𝐚𝐥 𝐂𝐨𝐦𝐩𝐚𝐧𝐲 𝐓𝐨𝐨𝐥𝐬 • 🔐 𝐏𝐡𝐨𝐧𝐞 𝐋𝐨𝐜𝐤 & 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 𝐔𝐭𝐢𝐥𝐢𝐭𝐢𝐞𝐬 • 🪄 𝐀𝐩𝐩𝐨𝐢𝐧𝐭𝐦𝐞𝐧𝐭 𝐁𝐨𝐨𝐤𝐢𝐧𝐠 & 𝐒𝐞𝐫𝐯𝐢𝐜𝐞 𝐒𝐜𝐡𝐞𝐝𝐮𝐥𝐢𝐧𝐠 𝐀𝐩𝐩𝐬 💬 Whether you're 𝐥𝐚𝐮𝐧𝐜𝐡𝐢𝐧𝐠 𝐚 𝐧𝐞𝐰 𝐢𝐎𝐒 𝐚𝐩𝐩 or 𝐮𝐩𝐠𝐫𝐚𝐝𝐢𝐧𝐠 𝐚𝐧 𝐞𝐱𝐢𝐬𝐭𝐢𝐧𝐠 𝐨𝐧𝐞, I bring the 𝐞𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞, 𝐩𝐫𝐞𝐜𝐢𝐬𝐢𝐨𝐧, and 𝐦𝐢𝐧𝐝𝐬𝐞𝐭 to deliver 𝐜𝐥𝐞𝐚𝐧, 𝐞𝐟𝐟𝐢𝐜𝐢𝐞𝐧𝐭, and 𝐮𝐬𝐞𝐫-𝐟𝐫𝐢𝐞𝐧𝐝𝐥𝐲 solutions. Let’s collaborate to 𝐛𝐫𝐢𝐧𝐠 𝐲𝐨𝐮𝐫 𝐚𝐩𝐩 𝐯𝐢𝐬𝐢𝐨𝐧 𝐭𝐨 𝐥𝐢𝐟𝐞 and take it to the 𝐧𝐞𝐱𝐭 𝐥𝐞𝐯𝐞𝐥!

Top Rated Plus Full-Stack & Mobile App Developer with $90K+ earnings and 100 percent Job Success on Upwork. I specialize in building scalable SaaS platforms, AI-powered applications and cross-platform mobile apps using Next.js, React, React Native, Node.js, Supabase, PostgreSQL and AWS. I help startups and enterprises build production-ready products from MVP to scale. 🌟 𝑨𝒃𝒐𝒖𝒕 𝑴𝒆: With 8 years of rich experience in Web Development, I have honed my skills working both individually and as part of a dynamic team. My ultimate goal is to exceed client expectations by delivering top-notch, quality work. Your satisfaction is my priority! 🎯 💼 𝑴𝒚 𝑬𝒙𝒑𝒆𝒓𝒕𝒊𝒔𝒆: 🌐 𝑭𝒓𝒐𝒏𝒕𝒆𝒏𝒅 𝑻𝒆𝒄𝒉𝒏𝒐𝒍𝒐𝒈𝒊𝒆𝒔: Next Js React.js React Native HTML/CSS Shadcn/Tailwind Bootstrap JavaScript jQuery 🔧 𝑩𝒂𝒄𝒌𝒆𝒏𝒅 𝑻𝒆𝒄𝒉𝒏𝒐𝒍𝒐𝒈𝒊𝒆𝒔: Symfony (v3, v4, v5) Laravel Node.js Express.js Core PHP 🗄️ 𝑫𝒂𝒕𝒂𝒃𝒂𝒔𝒆𝒔: Prisma Supabase PostgreSQL MySQL MongoDB ☁️ 𝑩𝒂𝒄𝒌𝒆𝒏𝒅 𝑺𝒆𝒓𝒗𝒊𝒄𝒆𝒔: Vercel AWS Azure Railway Firebase 🔗 API Development: Proficient in creating robust APIs using the above technologies. 📱 Mobile App Development: React Native Expo Cross-Platform App Development (iOS & Android) Push Notifications In-App Purchases & Subscriptions Firebase & Supabase Integration REST API Integration 💳 𝑷𝒂𝒚𝒎𝒆𝒏𝒕 𝑮𝒂𝒕𝒆𝒘𝒂𝒚 𝑬𝒙𝒑𝒆𝒓𝒕: Stripe PayPal Razorpay Lemonsqueezy Coinbase Checkout Paygets Payspace Wonderland Oppey Max Pay Adyen Securionpay Trustpay 🛍️ 𝑺𝒉𝒐𝒑𝒊𝒇𝒚 𝑺𝒑𝒆𝒄𝒊𝒂𝒍𝒊𝒔𝒕: Custom Theme Development Shopify Liquid Expertise App & API Integrations Checkout Page Customization Conversion-Focused Product Pages 🤖 𝑨𝑰 𝑰𝒏𝒕𝒆𝒈𝒓𝒂𝒕𝒊𝒐𝒏𝒔: AI Chatbots & Virtual Assistants AI-Powered Recommendations (personalization) OpenAI, Claude & LangChain Integrations Image/Video Processing with AI APIs AI in Healthcare, Fitness & E-commerce solutions 🌱 𝑪𝒐𝒎𝒎𝒊𝒕𝒎𝒆𝒏𝒕 𝒕𝒐 𝑺𝒖𝒄𝒄𝒆𝒔𝒔: When I take on a project, I take full responsibility to ensure its success. Your project's success is my mission! 🚀 🤝 𝑳𝒐𝒐𝒌𝒊𝒏𝒈 𝒇𝒐𝒓 𝑳𝒐𝒏𝒈-𝑻𝒆𝒓𝒎 𝑪𝒐𝒐𝒑𝒆𝒓𝒂𝒕𝒊𝒐𝒏: I am eager to establish long-term partnerships and seize new opportunities. Let's connect and make your project a success together! You won't regret it!

Full Stack Developer React Node 🧩 оhhh, so the frontend works, the backend works… but somehow the project doesn’t? Let’s fix that. 😄 What my clients got from working with me: ✔️ launch SaaS products in 6-10 weeks as Full Stack SaaS Developer ✔️ improve API performance by 30-45% as a Full stack Developer ✔️ reduce manual operations by 40-60% as a Node.js Developer ✔️ build platforms ready to support 10k+ users as a Full stack Developer React node As a Full Stack Developer React Node and SaaS Developer I help startups and established businesses: 16+ years in software development React developer 225+ delivered products as Full stack Developer React Node | MERN stack developer 9+ years of hands-on Node.js developer experience. As a Certified Full Stack Developer React Node and Web Full Stack React Developer, I focus on business outcomes first: launching SaaS MVPs 30–40% faster, improving release stability, building scalable architecture and reducing costly rework as products grow. My experience as a Full Stack React JS specialist allows me to deliver production-ready solutions with React.js, Node.js, Next.js, Nest.js and modern JavaScript Developer workflows, supporting platforms with 10k+ users, 99.9% uptime targets, and integrations across APIs, payments, CRMs, AI developer tools. As a Backend Developer Nest.js with strong TypeScript Backend Development skills, I design maintainable server-side application architecture, secure APIs, and clean business logic for SaaS, internal tools, marketplaces, and custom platforms. As a Node js Developer ( Nodejs Developer ) I use Node.js to simplify complex workflows, improve backend stability by 33–45%, and support products built on both SQL and NoSQL databases. My Typescript Nodejs background helps teams move 25–35% faster with modular services, readable code and easier long-term maintenance. I also build advanced integrations with Stripe, third-party services node.js graphql solutions for scalable product ecosystems, including platforms with 10k+ users, 99.9% uptime targets 20+ API development projects / payment / CRM integration. I’m a Full Stack Developer React Node who has delivered 30+ scalable web applications, including 10+ SaaS platforms, CRM systems, dashboards, admin panels, internal tools, and custom business products. My React js Node js work has supported products with complex integrations, role-based access, payments, analytics, and automation, with a focus on shipping fast, usable, and maintainable solutions that support real business goals. As a React Developer and Full Stack Developer React Node, I build responsive, scalable interfaces using React, JavaScript, Node.js, Next.js. My work as a React Developer focuses on creating fast, user-friendly products that improve usability, support growth, reduce friction across the customer journey. I also work as a React Native Developer ( Full Stack Developer SaaS ) when a product needs mobile-first extensions or companion app experiences aligned with the main platform. As a Full stack AI SaaS developer, I help businesses with scalable SaaS Projects, Edtech Products with dashboards and payment flows, advanced e-commerce solution beyond CMS limits, Corporate Websites with strong backend logic, marketplace platforms with secure transactions, Authentication and Security with JWT-based access control, API Development and Integration, GraphDB, REST API, node.js graphql, CRM Development, Payment Gateways Stripe Paypal Liqpay, Database Management & Optimization and ongoing Deployment & Maintenance. I also bring practical experience with PHP, Laravel, Python, Vue.js, Angular, React, Node.js, full stack developer supabase react, full stack react native spring boot, JavaScript, MySQL, WordPress, Tailwind CSS, Bootstrap, HTML, HTML5, CSS, CSS 3, TypeScript, Redux, jQuery, Responsive Design, Web Design, PHP, MongoDB, Next.js python full stack developer, full stack developer ai, full stack developer react, full stack developer shopify My work covers full stack node.js react for modern Web Application products, including custom API development and API Integration, while Git supports a clean and reliable delivery workflow. I also bring strong Web Design awareness, helping create interfaces that are not only functional, but also responsive, polished and user-friendly. 👉If you need a Full Stack Web Developer who can launch faster, improve performance, stabilize architecture, and build for long-term growth - let’s discuss your product. ggrrppkkll

🏆 7 years as a full stack developer. 50+ React and Node.js products shipped. 1 startup taken to a $25M valuation with $7M raised - Bairro, where I was lead full stack developer and website developer on a React and Node.js platform now used by 50K+ people. That is the track record behind every React and Node.js build I take on. 🚀 30+ SaaS Platform and Web App launches as a Senior Full Stack Developer and Full Stack Engineer. I started as a web developer and website developer before becoming a full stack developer who owns React frontend and Node.js backend equally. My full stack developer react node approach means one Full Stack Web Developer instead of three contractors - 40% faster delivery. 👋 Hi! I am Oleksandr, a Full Stack Developer and website developer with 7 years in React and Node.js. As a react developer I build interfaces in React and react typescript; as a Node.js specialist I run APIs and real-time services. My Full Stack Developer work covers SaaS Web App, Marketplace App, MVP SaaS, and Platform Development. Whether you have a Developer Needed post for a SaaS Product or need a Full Stack SaaS Developer for a Management Platform - I deliver. 📱 20+ industries as a full stack developer. I work as a full stack developer ai specialist and AI Engineer shipping AI Agent features. I deliver full stack developer shopify work, full stack developer laravel builds, python full stack developer projects, and .net full stack developer solutions. As a mobile app developer and React Native specialist I ship Mobile App Development for iOS and Android, including 12+ Real Estate and Property Management platforms. 🌐 100+ website developer projects delivered. My website developer work spans react nextjs and node.js backend developer builds, word press website developer projects, wordpress developer and website design work, shopify website developer stores, hubspot website developer setups, and wix website developer requests. Every website developer project follows SEO best practices with React speed and Node.js power. ⚡ React is in 100% of my full stack developer projects. React powers the SaaS Dashboard, Marketplace App, and Management Platform products I ship. I pair React with Node.js as a full stack node.js react specialist so components talk to APIs cleanly in every full stack developer react workflow. I also use vue, angular, javascript, flutter node.js, and react native for Mobile App Development - but React with Node.js stays my Full Stack Developer core. 🔧 Node.js handles 5M+ monthly requests across my client systems. As a back end developer node.js is my default for REST APIs, GraphQL, and microservices in every Full Stack Developer project. My node.js react pattern carries heavy traffic for SaaS Platform and Web App clients. Node.js runs authentication, payments, real-time messaging, and AI Agent pipelines in every full stack developer engagement. 📲 15+ mobile products as a full stack mobile developer. I build Mobile App Development with React Native, react native mobile, and react native expo. A Full Stack Developer react node architecture spans web and mobile, so one Full Stack Developer owns the whole App Development lifecycle. My react native work covers SaaS Product, Marketplace App, and Real Estate platforms. 🔗 50+ integrations as a Full Stack Developer and web developer. React frontends connect to CMS, e-commerce, and CRM systems. Node.js services plug into Stripe, Twilio, and dozens of APIs. My website developer and Full Stack Developer builds ship SaaS Development results on time. ✅ 0 abandoned projects in 7 years. Every website developer and Full Stack Developer build follows clean architecture: React stays modular, Node.js stays documented, deployments run automatically. React and Node.js are the Full Stack Developer foundation I build on, and I benchmark every Web App and SaaS Platform before handoff. 🔑 Why this full stack developer? A website developer who only knows React ships half a product; a Node.js engineer who never touches the frontend ships the other half. A full stack developer closes that gap. React without Node.js is a demo. Node.js without React is an API nobody sees. A full stack developer ties both together, and a good website developer keeps the result usable. 📌 Hire a full stack developer who writes React like a frontend specialist and Node.js like a backend one - and a website developer who does not disappear at handoff. My React code is documented, my Node.js services are tested, and every full stack developer project I close is a product you can run. That is what 7 years in React and Node.js buys you. 💬 Send me your brief. If it needs React, Node.js, a website developer, or a full stack developer who can own the whole build - let's talk. Every React and Node.js estimate I give is one I stand behind as your full stack developer.