Hire the Best Software Architecture Freelancers
in Ukraine

I'm Paul — a WooCommerce engineer and technical architect. I built and owned the platform behind a health startup that went from $0 to $80M in annual revenue, I maintain WooCommerce stores doing $2M+/month, and I've taken a store from constant downtime to 60% revenue growth in a single year. Over 10+ years I've learned that growth is usually a technical problem in disguise — the store that can't scale is almost always held back by infrastructure that was never built to. Most of my clients aren't looking for a freelancer to knock out a task. They need someone who can see the whole picture — the architecture, the integrations, the team, the roadmap — and make good decisions across all of it. That's the role I step into: a technical partner accountable for outcomes, not just tickets. WooCommerce is usually where the conversation starts. Custom checkout flows, subscription systems, complex pricing logic, and performance that holds under load are table stakes for me. The higher-leverage work is usually the layer underneath: internal tools, automation pipelines, bespoke business logic, and custom engineering that doesn't fit into a plugin. What I actually work on: — WooCommerce architecture and custom builds well beyond off-the-shelf solutions. For high-traffic stores, the right call is sometimes moving critical logic — inventory, pricing, order processing — out of WordPress entirely into dedicated NestJS microservices. WooCommerce stays the storefront; the heavy lifting happens elsewhere. — Performance engineering: not just PageSpeed scores, but the database queries, caching strategy, and infrastructure decisions that keep a platform fast and resilient at scale — the difference between a store that converts and one that buckles on its biggest day. — Internal systems and business automation: tools your team actually uses, workflows that remove manual overhead, integrations that connect your stack. — Technical leadership: stepping in as a de facto CTO or architect, leading dev teams, reviewing code, and keeping complex projects on track. — AI-powered features where they add real leverage — built into the product where it genuinely moves the needle, not as a buzzword. Two examples of the pattern in my work: One store came to me profitable but bleeding: constant downtime from a tangle of plugins and a misconfigured server, and it kept getting hacked — unpatched vulnerabilities, recurring malware. I cleaned up the infrastructure so it stopped falling over, closed the security holes, and took PageSpeed and Core Web Vitals from failing red to green across the board. Once the platform was finally stable and fast, the CRO, Klaviyo, and tracking work — GTM, Triple Whale — could actually do its job, and revenue grew 60% that year. A venture-backed company running a real-time network of thousands of connected devices across North America came to me with an oddly basic problem for their scale: their own site buckled at around 100 concurrent users. The cause wasn't traffic — it was no caching layer and a server nobody had ever properly configured or owned. I rebuilt the infrastructure so it held under real load and kept running as they grew. That's the pattern in most of my work: the business is ready to scale, and the infrastructure is what's holding it back. My stack: PHP, JavaScript, React, Node.js, NestJS, and the full WooCommerce/WordPress ecosystem — plus the measurement layer that proves the work: GTM, Triple Whale, and whatever else the problem calls for. I work with a small number of clients at a time. If you're building something that needs to last, and you want a technical partner who's done this before at scale — let's talk.

More than 15 years of development IT solutions (accounting, financial and medical fields). I know how integrate AI into your business. I graduated from university with a master degree in applied math, so all math is my piece of cake. I know how to brainstorm, create and support complex solutions. P.S. Also I have an opened USA Visa

Full Stack Web Developer, 12+ years and 150+ products shipped across 20+ countries. I lead a team of Laravel and Vue.js developers. The work I am proudest of runs real operations: medical transport moving 5,000+ patients a year, delivery fleets planning 500+ routes a day. Top Rated on Upwork since 2018. Clutch 5.0 across 20 reviews, GoodFirms 4.93 across 25. You probably recognize yourself in one of these. You are launching a product and want a first version that still holds up a year in. You are running on a system that has gotten slow and fragile, and hard to hand to a new developer. Or you work in a field where the software has to hold up because people depend on what it moves. WHAT YOU GET ✔️ A Full Stack Web Developer team behind your build. I lead Laravel developer and Vue.js developer specialists plus a WordPress developer. One person out does not stall the build. ✔️ Ratings you can check. 98% positive reviews across 100+ web projects, an 8-year client relationship still running. ✔️ Systems that hold under real load. The Secure Care UK platform runs 5,000+ secure patient transfers a year across a 25+ vehicle fleet and a 24/7 control room. ✔️ Code you can maintain after handover. Documentation, tests and knowledge transfer. You are never locked into depending on us. Send me what you are building or the system you need fixed, and I will reply with an architecture plan and the first decision I would settle. Kind regards, Alexandra ----- HEALTHCARE, 25+ PROJECTS DELIVERED - Full Stack Web Developer, Secure Care UK medical transport: 5,000+ secure patient transfers a year, 25+ vehicle fleet, 24/7 control room. - Healthcare App Developer, Secure Care UK tablet app: status prompts every 30 minutes across 4 job levels, saving a few thousand a month over the old platform. - Healthcare App Developer, Rheo vitals wearable: 5 vital-sign categories streamed over LTE in real time with per-user alert thresholds. - HIPAA Developer, fertility tracking app: bug-free rate raised from 85% to 96% on retest, delivered in 3 months against a 4-month estimate. - Full Stack Web Developer, Healthcare Apps portfolio: 25+ healthcare projects across web and mobile in 12+ years. LOGISTICS, 20+ PROJECTS DELIVERED - Logistics App Developer, multi-depot delivery system: 12+ depots, 500+ daily routes, automated planning. - Laravel Developer, multi-tenant fleet platform: 5+ subsidiaries on one Full Stack Web Developer build with automated route planning. - Logistics App Developer, courier fleet tool: 3 regions, 100+ active drivers, offline navigation that re-syncs on reconnect. - Full Stack Web Developer, last-mile logistics app: customer satisfaction lifted from 35% to 85%, delivery wait cut 34% in low-signal areas. - Back End Developer and Backend Developer, logistics launch: 12 new partners signed within 3 months, 8 more in the pipeline. WEB PLATFORMS AND LARAVEL - Full Stack Web Developer, The Cultivist rebuild: 90% jump in user base after launch, 8-year relationship and counting. - Laravel Developer, FATBZ crypto platform: dual-wallet setup, in-house RNG engine, ForumPay for deposits, payouts and USDT conversion. - Laravel Developer and Expert Laravel Developer, PHP Laravel API work: 100+ web solutions over 12 years in web development. - Full Stack Developer, Laravel backend developer builds: REST APIs with clean architecture, Laravel Docker deployment, Laravel Wordpress integrations. - PHP Developer, Wordpress Developer work: custom themes, plugin development and web design overhauls. VUE.JS AND FRONT END - Vue.js Developer, admin dashboards: reusable component libraries in Vue Tailwind with Vuex and Pinia state. - Vue.js Developer, UX UI Vue.js interfaces: 35+ web designs and 70+ wireframes behind the builds. - Vue.js Developer, Vue.js Node.js stack: API-driven dashboards with GraphQL and JWT auth. - Front End Developer, Nuxt Developer work: Vue.js Nuxt and Vue Nuxt server-rendered front ends. - Vue.js Developer and React Developer collaboration: PHP Laravel React and Laravel Vue delivery with trusted partners. DESIGN AND MORE - Web Designer and Website Designer, product design: 40+ mobile app designs, 35+ web designs, 70+ wireframes. - Website Developer and Full Stack Website Developer, web development: 150+ products shipped, used in 20+ countries. - MORE: Web Design, Web Development, Full Stack Developer AI, Full Stack MERN, Full Stack React Developer, Full Stack Developer React Node, Python Full Stack Developer, Full Stack Web App, Full Stack Developer Webflow, Full Stack Laravel, Full Stack Developer Laravel, Vue Js Wordpress, Webflow Developer, Shopify Web Developer, Wix Website Developer, Web Scraping: 150+ products, 12+ years, Top Rated since 2018. SKILLS: HTML, HTML5, CSS, CSS 3, JavaScript, jQuery, PHP, Python, SQL, React, Node.js, Angular, WordPress, Bootstrap, Git, software design, software architecture & design, software development, software debugging, desktop application.

🏆 AUTODESK-CERTIFIED EXPERT & PUBLISHED AUTHOR I specialize in cutting-edge AI-powered CAD solutions that transform how engineering teams work. As author of "Autodesk Vault Programmer's Cookbook" and Autodesk Expert Elite Member, I combine deep CAD expertise with advanced AI capabilities. 🚀 CORE SPECIALIZATIONS: • AI-CAD Integration (LLM + CAD workflows, text-to-model generation) • Autodesk Platform Services (APS/Forge) custom applications • Vault PDM Implementation & Migration (6+ enterprise deployments) • Fusion 360 API Development & Automation • Python-based CAD workflow automation • OCR + AI document processing for engineering 💼 RECENT PROJECTS: • Built AI-powered document analysis systems for manufacturing • Automated SolidWorks workflows saving 40+ hours/week • Implemented enterprise Vault systems for global teams • Created custom Fusion 360 plugins for design automation Ready to 10x your engineering productivity with AI-powered CAD solutions.

AI was supposed to take my job. It keeps sending me work instead... A vibe coded app that demoed beautifully and died on contact with real users - that's the exact thing I turn into a scalable, production-ready product! Full Stack Developer with 10 years of experience and Team Lead delivering 30+ projects - your trusted long-term development and solution architecture partner specializing in React and Node.js The code is invisible; the outcome is not ✨ With me: - Autobound grew from one engineer to a 15-person team through 4+ years of our cooperation, raised more than $4M in funding, scaled to 50K+ active users and $8M ARR along the way. - DriverHRIS evolved from a slow 1000-screen system into a fully rebuilt product serving 400+ dealerships, backed by an 18-person dev team, over 5+ years - page loads dropped 80%, support tickets cut in half. - Augmento expanded from a prototype to a 15-person dev team in 3 years, powering AR experiences for 30+ global brands including Fortune 500 companies and securing $6M in investment. - At Wawibox (Germany, dental-industry SaaS), I've led the engineering team for 3+ years - owning the full rewrite of the legacy Vue 2 platform into a modern Vue 3 / Nuxt 3 / Node.js / TypeScript / PostgreSQL stack without a single day of downtime for 2,000+ paying clinics across 3 countries. 🛠 Tech I work with: Frontend — React · Next.js · Vue 3 · Nuxt 3 · TypeScript · JavaScript Backend — Node.js · Python Mobile — React Native · Flutter Data & infra — PostgreSQL · Firebase · Supabase AI & tooling — Claude · Claude Code · Cursor · LLM integrations · agentic workflows I'm also an early and heavy Claude power-user - AI-assisted development is part of how I ship, not a novelty bolted on. Cursor, Claude Code, agentic workflows, LLM integrations in production - I've been living in this stack since the day it existed. Got a product to build, scale, or rescue? Whether it's a new build, a team extension, or a legacy system that's slowing you down - message me and let's find a solution that actually fits your situation. 🤝 The first 30 minutes are on me, and you'll walk away with a clear next step either way. 🚀

Hi, my name is Oleksandr. Happy to build your next gem. First author of dnaSORA (bioRxiv, 2025) — a unified diffusion transformer for genomic data, built with Ecotone AI. I've designed and shipped novel model architectures, not just wired up APIs. Experience: 15 yrs Areas: Agentic AI development — multi-agent orchestration on LangGraph, MCP tool integration, human-in-the-loop approval flows, agent reliability & evals Generative AI pipelines development/engineering DevOps/MLOps (cloud infrastructure provisioning/automation) CI/CD (build/deploy pipelines for classical web apps, servers, ML models) Technology stack: LangGraph (durable execution, checkpointing, interrupts), MCP, A2A, Pydantic AI LangSmith / Langfuse (tracing, evals) Stable Diffusion, SDXL, FLUX, ControlNet, LoRA (Kohya) diffusers, ComfyUI training/inference CUDA Docker images PyTorch/TensorFlow GCP/AWS Terraform Python/Node.js Author of an open-source multi-agent runtime : cross-host agent bridges, disk persistence, live telemetry. I'd be happy to help you