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I am a professional freelancer with THIRD PARTY LIABILITY INSURANCE for over two and a half million dollars, so you are in safe hands. I am Microsoft Certified Trainer, Office 365, GCP, AWS, and Azure Expert. Honored as Microsoft Most Valuable Professional in Azure area. I cover architecting, security, administrating, and migration of all three major clouds – Azure, AWS, and GCP. Apart from the main area of Cloud expert in the field of infrastructure servers Windows Server 2003-2016, Microsoft Active Directory, Hyper-V Private Cloud, IIS, System Center, SQL. Private Cloud, System Center, Hyper-V, Open Stack Expert, and all Microsoft products Expert. Linux Server administrator. I am the holder of certificates: • pSeries AIX UNIX Support • First Certificate in English • PRINCE2 Practitioner • Microsoft Certified: Azure Administrator Associate • Microsoft® Certified Solutions Expert: Cloud Platform and Infrastructure • Microsoft® Certified Solutions Associate: Cloud Platform • Microsoft® Certified Solutions Expert: Productivity • Microsoft® Certified Solutions Expert: Data Management and Analytics • Microsoft® Certified Solutions Associate: Windows Server 2016 • Microsoft® Certified Solutions Associate: Windows 10 • Microsoft Specialist: Configuring Windows Devices • Microsoft Specialist: Architecting Microsoft Azure Solutions • Microsoft Certified Solutions Developer: Azure Solutions Architect • Microsoft Specialist: Developing Microsoft Azure Solutions • Microsoft® Certified Solutions Expert: Data Platform • Microsoft Specialist: Implementing Microsoft Azure Infrastructure Solutions • Microsoft® Certified Solutions Associate: Office 365 • Microsoft® Certified Solutions Expert: Private Cloud • Microsoft® Certified Solutions Expert: Messaging • Microsoft® Certified Solutions Associate: SQL Server 2012/2014 • Microsoft® Certified Solutions Associate: Windows Server 2012 • Microsoft® Certified Solutions Expert: Server Infrastructure • Microsoft® Certified IT Professional: Enterprise Administrator on Windows Server 2008 • Microsoft® Certified Solutions Associate: Windows Server 2008 • Microsoft® Certified Technology Specialist: Windows Server 2008 Applications • Microsoft® Certified Technology Specialist: Windows Server 2008 Network • Microsoft® Certified Technology Specialist: Windows Server 2008 Active Directory • Microsoft® Certified Technology Specialist: Microsoft Exchange Server 2010

Hello! I’m Alexander, a full-stack developer with 15+ years of experience in delivering high-quality web and mobile applications. Also I specialize in API development and integrations, building seamless connections across platforms and systems. With over 200 successful projects completed worldwide, I focus on delivering scalable, secure, and business-oriented solutions. My workflow combines strong hands-on engineering expertise with modern AI-assisted development. I understand the technologies I work with in depth, so I can build, review, and improve code manually where it matters. At the same time, I use AI tools with precise technical instructions to speed up routine development tasks, improve code consistency, and help clients get results faster with more efficient budgets. 𝗛𝗘𝗥𝗘'𝗦 𝗪𝗛𝗔𝗧 𝗜 𝗖𝗔𝗡 𝗛𝗘𝗟𝗣 𝗬𝗢𝗨 𝗪𝗜𝗧𝗛: • AI-powered SaaS platforms and internal business tools • Custom CRM, ERP, and workflow automation systems • Client / partner portals, and self-service dashboards • AI assistants, ChatGPT integrations, OCR, and document automation • API development and third-party integrations (REST / OpenAPI / Webhooks) • Subscription platforms, payment flows, invoicing, and billing automation • Fintech, payment processing, and banking API integrations • E-commerce platforms, headless commerce, and marketplace systems • Booking, scheduling, appointment, and resource management platforms • Admin panels, back-office systems, and data management interfaces • Legacy PHP / Laravel / JavaScript system modernization • High-performance Laravel applications with Redis, queues, and Horizon • B2B platforms with roles, permissions, teams, and approval workflows • Data scraping, data processing, reporting, and export automation • Real-time applications: chat, notifications, live status, live data • Mobile-friendly web apps, SPA and Flutter mobile applications 𝗠𝗬 𝗣𝗥𝗘𝗙𝗘𝗥𝗥𝗘𝗗 𝗦𝗧𝗔𝗖𝗞 𝗙𝗢𝗥 𝗠𝗢𝗦𝗧 𝗧𝗬𝗣𝗘𝗦 𝗢𝗙 𝗣𝗥𝗢𝗝𝗘𝗖𝗧𝗦: • AI Boosted Development: OpenCode, ChatGPT Codex, MCPs, plugins • Backend / API: Laravel 13, PHP 8.4, Composer • Frontend: npm, Typescript, Blade + Livewire / Vue.js + Inertia.js + SPA + SSR • Styles: TailwindCSS + PrimeVue, SCSS, CSS3, HTML5, Flexbox • Assets: Vite • Mobile: Dart, Flutter (Android / iOS), Riverpod (state management) • Testing: TDD, Pest 4 (unit / feature), Dusk (browser) • DB: PostgreSQL / MySQL / MariaDB / SQLite • AI API: ChatGPT / DeepSeek • Web-server: Nginx + php-fpm / Laravel Octane + FrankenPHP • SEO Markup: Schema ORG, JSON-LD, Opengraph • Money: Stripe / any bank systems • Cryptocurrency: NOWPayments / BitPay • Background Tasks: Cron / Supervisor / Systemd • Queues: Horizon + Redis / RabbitMQ / Kafka • Cache: Redis • API Docs: Swagger / OpenAPI • SSL: LetsEncrypt • Corporate Domain Mail: ZohoMail / Gmail • Full Text Search: Scout + MeiliSearch / Typesense (simple systems), OpenSearch (complex systems) • Transactional Mail Notifications: Brevo / ZeptoMail • Push Notifications: Firebase / Supabase • Maps: Leaflet / Mapbox / Google / Yandex / OpenStreetMap / Geocoding API • Analytics: Google Analytics / Yandex Metrika • Realtime Broadcasting: Laravel Echo, Laravel Reverb (simple systems), Soketi / OpenSwoole (complex systems) • CDN: Cloudflare, Fastly, Selectel, Akamai • API Development: REST API / gRPC, GraphQL, Swagger / OpenAPI, JSON / XML / SOAP • API Testing: Postman • Debug: Laradumps, Xdebug, Mailpit, Horizon, Telescope • I18n: Multi language support • Admin Panel & Data Management: Filament • Architecture: Entity–Service–Presenter (ESP)!!, DDD, MVC, DI, SOLID, GRASP, DRY, KISS • RBAC: Roles / Permissions • Browser Extensions: TypeScript, SCSS, Vite, Chrome / Brave • Hosting: DigitalOcean, Hetzner, VPS / VDS, Cloud Hosting, DNS Settings • OS: Ubuntu 24 • VCS: Git, GitLab (standalone), GitHub • Graphic Design Tools: Photoshop, Illustrator, Figma, Canva • Automation: Telegram Bots / Zapier • Notification Channels: Telegram API, Firebase, Email, SMS, Web Push API • Performance: Pulse 𝗔𝗗𝗗𝗜𝗧𝗜𝗢𝗡𝗔𝗟 𝗕𝗔𝗖𝗞𝗚𝗥𝗢𝗨𝗡𝗗 𝗔𝗡𝗗 𝗘𝗫𝗣𝗘𝗥𝗜𝗘𝗡𝗖𝗘: • API integration: Google, Yandex, 2GIS, VK, Klaviyo, Zoho, CloseCRM, Podio • Email Services: MailerSend, Mailgun • Backend Development: Yii2, Node.js, Express.js, Axios • Frontend Development: Bootstrap 3-5, JavaScript ES6, jQuery, Pixi.js • Databases: MySQL, SQL, Sphinx, Memcached, MongoDB, Firestore • Data Scrapping: DOM Crawler, regex, XPath, Selenium, Puppeteer, Proxies, CAPTCHA Bypass • SEO: Clean URLs, Canonical Tags, Robots.txt, Auto-Generated Sitemaps, Multilingual Support • Real-time features: Socket IO, AJAX, Firebase, WebRTC, WebSockets • Document automation: PHPOffice, LibreOffice, Tesseract OCR • Security: 2F Auth, Google Authenticator, QR Codes, SMS If you're looking for a dedicated developer who combines technical excellence with business insight, feel free to reach out. Let's discuss how I can contribute to the success of your next project. Best regards, Alexander

Most people schedule a meeting to discuss the problem. I'd rather solve it and send you an update. I take ownership of content and SEO operations - the publishing, updates, QA, and maintenance work that keeps your sites running - so you can stop managing it. My long-term clients all say some version of the same thing: "once Adrian takes over, I stop worrying about it." 🏆 Top Rated | 98% Job Success | 70+ projects | 5+ years Proof, not promises: → Ran content operations across a 100+ domain affiliate portfolio (iGaming) - weekly update cycles, ranking maintenance, full QA, zero errors reaching production → Audited a 2M+ article site with no CMS access - found 172 critical issues, delivered a phased recovery plan the client is now implementing (with me executing inside the CMS) → Cut a marketing agency's content production time from 5 days to 2 by rebuilding their workflow - then documented everything in an SOP library with Loom walkthroughs → Currently managing SEO and content operations across multiple client properties: technical fixes, schema, internal linking, PageSpeed, publishing How I work: I work in two formats. Monthly ownership - you hand me a defined area (a site, a portfolio, a publishing operation) and I run it: weekly delivery, written reports, issues flagged before they become problems. Or fixed-scope audits - you get a prioritized, phased action plan any developer or VA can execute; if you want, I execute it myself. Fully async. No standups, no status calls, no chasing. If I have a question, you'll get a message. If something's wrong, you'll hear it from me first. Loom walkthroughs when something needs showing rather than telling. Good fit if you: run an affiliate portfolio, an agency, or a content-heavy site and want the operations off your plate - permanently, not project by project.

Need a Laravel or Symfony developer who can build SaaS billing that survives production? I specialize in Stripe subscriptions, multi-tenant architecture, and AI-powered features. I build and maintain high-load SaaS platforms — where payments, billing, and AI integrations just can't fail. Launching a subscription product? Adding AI to your existing app? Scaling a multi-tenant system, or inherited a messy legacy codebase? That's exactly what I do. Laravel/Symfony on the backend, Vue.js/Nuxt.js on the front — built to last. 🎯 Core Areas of Expertise 💳 Stripe & Subscription Systems Full subscription lifecycle management: asynchronous webhooks handling, metered billing, upgrades/downgrades, dunning management, and Stripe Connect for marketplaces. 🏢 Multi-Tenant SaaS Architecture Robust tenant isolation strategies (single-database with scoped scopes or multi-database systems), dynamic subdomains, and clean infrastructure boundaries using Docker and Caddy. 🏗️ Long-Lived Enterprise Systems Deep work with large-scale Laravel and Symfony applications using Domain-Driven Design (DDD). I design clean architectures that remain maintainable years down the road. 🔌 High-Performance APIs & Integrations Designing scalable REST and GraphQL backends optimized for high concurrency, webhooks processing, and clean consumption by frontend layers. 🔐 Security & Data Resilience Encryption at rest, strict Role-Based Access Control (RBAC), secure OAuth/token authentication, and automated backup strategies. 🛠️ Legacy System Takeovers & Maintenance I don't just patch symptoms; I audit and fix the root cause. If you have a fragile, unoptimized application that frequently drops connections, chokes on database queries, or fails during high-traffic windows, I step in to modernize the code, optimize the infrastructure, and stay on as your long-term tech partner. 📊 Proven Track Record 8+ years of engineering production-grade PHP systems (Laravel, Symfony, Go). 2,000+ logged hours on Upwork with a flawless 5-star rating across all contracts. Consistent history of long-term, multi-year client partnerships — not just one-off gig builds. Expert workflow utilizing cutting-edge tools (Docker, PHPStorm, PHPStan, Pest, Claude Code) for automated quality control and rapid deployment. I read your codebase thoroughly before making a single change. I communicate clearly, document everything, and never disappear mid-project. If you are looking for a reliable, product-minded engineer to take your platform to the next level, send me a message. Let’s jump on a quick call, audit your current challenges, and outline a concrete roadmap.

Do you have a slow SQL Server query, a broken SSIS package, or a complex stored procedure that needs fixing? I am a Senior T-SQL Developer and Database Engineer with extensive experience in high-transaction environments where business logic resides within the database ("Thick Database" architecture). I specialize in troubleshooting, optimizing, and developing robust database solutions. Whether you need a quick fix for a performance issue or a long-term partner for backend development, I can help. HERE IS HOW I CAN HELP YOU: SQL PERFORMANCE TUNING I will analyze your slow queries and Execution Plans to reduce runtimes from minutes to seconds. I specialize in indexing strategies and code refactoring. T-SQL DEVELOPMENT & BUG FIXING I can write or fix complex Stored Procedures, Functions, Triggers, and Views. I have a strong background in L3 Support, so I am used to finding root causes quickly. ETL & DATA INTEGRATION (SSIS) I can build, fix, or modify SSIS packages. I have experience integrating data from various sources, including Oracle and third-party APIs. MIGRATION & DATA INTEGRITY Need to move data or update your schema? I write safe, reliable migration scripts to ensure your data remains consistent. WHY WORK WITH ME? - I am communicative and transparent (years of experience in direct client support). - I focus on long-term stability, not just quick patches. - I am available for ad-hoc tasks and part-time cooperation. Tech Stack: Microsoft SQL Server, T-SQL, SSIS, Oracle (Integration), SSMS, Git. Let's discuss how I can improve your database performance today!

Hello World I am a game developer generalist, tools and bot coder with 10+ years of freelancing experience. I've worked solo and in teams on 2D/3D, VR, single and multiplayer games. In recent years I've specialized in Unreal Engine but I've also used Unity and other tech in the past. Besides that I also know my way around automation (Bots for websites, games, desktop programs, mobile apps) and music related tools (Midi/Arduino). If you have interesting project then don't hesitate to contact me. cheers