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| 𝐄𝐑𝐏, 𝐌𝐨𝐛𝐢𝐥𝐞 & 𝐖𝐞𝐛 𝐀𝐩𝐩𝐬 | 𝐍𝐞𝐭𝐰𝐨𝐫𝐤 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭 (𝐂𝐢𝐬𝐜𝐨/𝐌𝐢𝐤𝐫𝐨𝐓𝐢𝐤)| 𝐅𝐫𝐞𝐞 𝐂𝐨𝐧𝐬𝐮𝐥𝐭𝐚𝐧𝐜𝐲 Is your business struggling with outdated software, unstable SaaS platforms, or insecure networks?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.

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.

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.

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

🏆 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.

Is your Magento store slow, stuck on an outdated version, or bleeding conversions at checkout? I fix that. 🥇 Top Rated Plus | ⭐ 100% Job Success | 👍 100% Satisfaction ✔ 100% Full-time Upwork Freelancer. ✔ 1000 + Working Hours on Upwork 🌟🌟🌟18+ years of experience in Web development .🌟🌟🌟 I'm a Magento 2 / Adobe Commerce specialist with 18+ years in e-commerce development. I've delivered upgrades, performance overhauls, and checkout rebuilds for brands including Christian Louboutin, Calvin Klein (6 Middle Eastern markets), LG Electronics, and Tefal — and I built the world's largest Magento 2 class reference (6,000 classes across 295 modules). 🥇 Top Rated Plus | ⭐ 100% Job Success | 2,000+ Upwork Hours ——— What I deliver ——— ▸ Magento Upgrades & Migrations — Magento 1→2 and 2.4.x version upgrades with PHP 8.x readiness. Migrated a Michelin-level restaurant group from M1 to M2.4.7: full data migration, extension modernization, and locale alignment. ▸ Performance Optimization — N+1 query elimination, MySQL profiling, Redis/Varnish tuning, and Core Web Vitals improvements. Clients typically see 30-50% page load reduction after my performance audits. ▸ Checkout & Payments — Full checkout rewrites and payment gateway integrations. Shipped 8 payment methods for LG com (Adyen, Klarna, Alma, Aplazame, Mercado Pago) across REST and GraphQL. Rebuilt Calvin Klein ME's checkout across 6 countries. ▸ Hyvä Theme Development — Modern, fast Magento frontends that dramatically improve LCP and mobile performance scores. ▸ Custom Module Development — Built modules for marketplace integrations, carrier connections (Zajil Express), ERP sync (Odoo), and multi-region single-codebase architectures. ▸ Multi-Store & Multi-Region — Single-codebase setups serving multiple countries with region-specific catalogs, pricing, currencies, and Arabic RTL support. ——— Selected results ——— ✔ Christian Louboutin (via Valtech) — Upgraded global platform to Magento 2.4.4 / PHP 8.1. Consolidated multiple regional instances into a single multi-region codebase. ✔ LG Electronics — Delivered 8 payment integrations across headless and web, with strict SLAs and acceptance criteria. ✔ Calvin Klein Middle East — Full checkout rewrite serving 6 countries (Bahrain, Kuwait, Oman, Qatar, Saudi Arabia, UAE). ✔ Tefal SA — Built the Saudi Arabia e-commerce platform from setup through production launch. ✔ Pescaderías Coruñesas — Complete Magento 1 to 2.4.7 migration for a Michelin-level Spanish restaurant group. ——— Tech stack ——— Magento 2.4.x / Adobe Commerce · PHP 8.x · MySQL · Elasticsearch · Redis · Varnish · Hyvä · GraphQL · REST API · Docker · Git · CI/CD · AWS (CloudFront) · Capistrano · Nginx/Apache ——— How I work ——— ✔ 100% full-time Upwork freelancer — not juggling side jobs. ✔ Fast turnaround with daily progress updates. ✔ Clean, documented code with Git workflow. ✔ Available for both long-term retainers and project-based engagements. Ready to fix your Magento store? Send me a message describing your project, and I'll respond within a few hours with a clear plan and timeline. #Magento #SolutionSpecialist #Ecommerce #WebDevelopment #PHP #JobOpening #CareerOpportunities #PHP #JobOpportunity #Magento #SolutionSpecialist #Ecommerce #WebDevelopment #PHP #JobOpportunity #MagentoDeveloper #BackendDeveloper #SeniorMagentoDeveloper #Ecommerce

✅Let's start with a quick consultation or a small initial milestone so you can see I'm the right fit. 🔥PROVEN BUSINESS IMPACT - 10+ Years of engineering and building enterprise-grade applications as a .NET developer in high-stakes environments. - ROI-Driven Development: $2.5M+ in verified client impact, leveraging my background as a full stack developer to increase revenue and reduce operational overhead through expert software development. - Performance Engineering: 90% faster data processing and 75% lower infrastructure costs achieved through advanced Microservices and optimization as a senior .NET developer proficient in ASP.NET Core. - Scalability & Growth: Scaled platforms to 30,000+ active users; consistently cut time-to-market for MVPs by 4–6 weeks by applying the expertise of a seasoned full stack developer. - Legacy Modernization: Proven track record as a .NET developer migrating legacy systems - including .NET Framework and .NET Compact Framework - to modern architectures, resulting in 40% fewer bugs. - Efficiency Gains: Reduced admin friction by 45% through custom-built automation, demonstrating the value a dedicated full-stack developer brings to complex SQL-driven workflows. 👨🏻‍💻THE PARTNERSHIP EXPERIENCE - Full-Stack Authority: Microsoft-certified expertise spanning the entire development lifecycle, from robust C# backend architecture to dynamic frontend interfaces. - Versatile Tech Lead: Whether you need a full stack developer for MVP creation, a .NET developer for enterprise scale, or a java developer for backend migration, I bridge the gap between technical requirements and business goals. I also offer the flexibility of a java developer for interoperability, and the analytical power of a python developer for data-heavy tasks. - Agile & Transparent: High-velocity delivery using JIRA/Asana, providing the clear, consistent communication expected from a senior full-stack developer. ⚙️ ENGINEERING CAPABILITIES - Backend Architecture: Building high-throughput systems with C#, ASP.NET Core, and ASP.NET Web API. I also offer the flexibility of a java developer to integrate with diverse existing ecosystems. - Modern Frontend: Crafting dynamic UI/UX using Angular, React, and JavaScript. My deep experience with HTML5, CSS 3, and Bootstrap ensures highly responsive, mobile-first designs. - Cloud & Infrastructure: End-to-end management of cloud-native ecosystems (Azure/AWS) and containerized deployment pipelines as a lead .NET developer. - Data & Performance: Advanced database design using Microsoft SQL Server and complex SQL queries to cut data latencies by up to 50%. - Cross-Functional Skills: I bring the architectural discipline of a .NET developer - including ASP.NET MVC and ASP.NET expertise - to every project, while also offering the modern tooling mindset of a full stack developer using Node.js. 🏆 DOMAIN SPECIALTIES - FinTech: Secure ledger systems and transaction management built by a specialized .NET developer. - Healthcare: HIPAA-compliant patient management portals and telehealth solutions. - LegalTech/Enterprise: Complex document workflows and granular RBAC. ⚒️ TECHNICAL TOOLSET - The .NET Stack: .NET Framework, .NET Compact Framework, ASP.NET Core, ASP.NET Web API, ASP.NET MVC, ASP.NET, C#. - Frontend Mastery: Angular, React, JavaScript, HTML5, CSS 3, Bootstrap, jQuery. - Data Layer: Microsoft SQL Server, SQL, Redis, MongoDB, ElasticSearch. - General Stack: Node.js, Python, Docker, CI/CD. - Engineering Standard: Clean Architecture, SOLID Principles, and an uncompromising focus on software development quality. 📩If you’re looking for a reliable and experienced .NET Developer and full stack development partner who understands both technology and business impact, I’d be happy to connect - feel free to invite me for an interview!

I am Aleksandra, leading a team of experienced full-stack developers specializing in AI-driven applications. We design and develop modern, scalable web and mobile solutions that integrate artificial intelligence, automation, and cloud technologies to optimize business operations. With over 20+ years of collective experience, we have worked with startups and enterprises across industries like FinTech, Healthcare, eCommerce, and SaaS. Our expertise spans the entire development cycle, from initial concept and UI/UX design to backend architecture, AI integration, SRE (Site Reliability Engineering), and cloud deployment. 🏆 194+ successful projects completed on Upwork with global clients 💲 $5M+ earned on Upwork through high-impact full-stack and AI solutions ⏱ 55,121+ hours billed, proving long-term client trust and engagement 💼 600+ total projects delivered since 2000 across AI, web, and mobile 📚 100% of developers hold engineering degrees, ensuring expert-level technical depth 👩‍💻 Advanced AI team includes Kaggle competition masters and top ML researchers 📊 91%+ job success rate, reflecting top-tier performance and consistency 🚀 25+ AI-driven apps deployed in FinTech, EdTech, and HealthTech 🧠 30+ machine learning models built and optimized for live environments 🌎 20+ industries served, from startups to Fortune 500 clients 🧱 Founded in 2000, bringing 24+ years of experience in software innovation 🛠 40+ React + Python full-stack solutions developed for scalable applications ⚡ High-load systems deployed to serve thousands of concurrent users 📈 Client ROI increased by up to 70% in AI automation projects 💬 Featured in Forbes, MBN Magazine, and Helsinki Times for client success stories Expertise: Full-stack development for web and mobile applications AI-powered solutions, including computer vision, natural language processing, and predictive analytics Scalable cloud architecture using AWS, Google Cloud, and Azure Real-time data processing and AI-driven automation Platform Engineering and Infrastructure as Code (IaC) GitOps workflows and CI/CD pipeline optimization API development and third-party service integrations Performance optimisation for high-traffic applications FinOps and cloud cost optimisation Secure and accessible web applications with SEO best practices Technology Stack: Frontend: React.js, Next.js, Vue.js, TypeScript Backend: Node.js, Python (FastAPI, Django, Flask), Golang AI & Machine Learning: TensorFlow, PyTorch, OpenAI API, Hugging Face, LLMOps Databases: PostgreSQL, MongoDB, Redis, Firebase Cloud & DevOps: AWS (Lambda, S3, DynamoDB, EC2), Docker, Kubernetes, Terraform, Helm, ArgoCD, GitHub Actions, GitLab CI/CD, Ansible, Prometheus, Grafana, ELK Stack Tools & Platforms: Figma for UI/UX, Miro for user flow mapping, Webflow for no-code development Why Work With Us? We focus on delivering intelligent, future-proof applications that drive business growth. Our team ensures seamless collaboration, clean code, and scalable architecture that adapts to evolving needs. We are committed to clear communication, efficient execution, and long-term support. If you are looking for a team that can build and scale AI-powered applications with a strong full-stack foundation, let's discuss your project. 🔑 Keywords to find me: AI Developer | Full-Stack Developer | AI Applications | React Developer | Node.js Developer | Python Developer | AI Integration | SaaS Developer | Web App Developer | Mobile App Developer | Scalable Applications | AI-Powered Software | Computer Vision | NLP Engineer | Machine Learning Engineer | Backend Developer | Frontend Developer | Cloud Developer | Automation Engineer | Cloud Architect | GCP | AWS | Azure | TensorFlow | PyTorch | OpenAI | Hugging Face | FastAPI | Django Developer | Flask Developer | Golang Developer | MLOps | LLMOps | DevOps | SRE | Site Reliability Engineer | Platform Engineer | Kubernetes | Docker | Helm | ArgoCD | Terraform | Infrastructure as Code | IaC | GitOps | CI/CD | GitHub Actions | GitLab CI/CD | Jenkins | Ansible | Prometheus | Grafana | Datadog | ELK Stack | DevSecOps | FinOps | AIOps | Observability | Monitoring | Service Mesh | Istio | Crossplane | OpenTelemetry | HashiCorp Vault | Multi-Cloud | Serverless | Figma | Webflow | Miro | Firebase Developer | MongoDB Developer | PostgreSQL | Redis | REST API Developer | API Integration | Predictive Analytics | AI in FinTech | AI in Healthcare | AI in eCommerce | SaaS Application | Intelligent Automation | Real-Time Data Processing | Cross-Platform Developer | SEO-Friendly Development | Secure Web Applications | Scalable Web Architecture | UI/UX Focused Developer | AI SaaS Developer | AI-Powered Mobile Apps | Full-Cycle Development | AI Solutions for Business | Enterprise Software | Startup MVP Development | AI Team Lead | Cloud-Native Applications | Serverless Architecture | AI-Driven Optimization | AI Workflow Automation | Real-Time AI Solutions | AI-Enhanced UX | AI Web App | AI-Powered Dash