Hire the Best Software Architecture Freelancers
in Poland

I engineer AI-driven business automation, custom SaaS platforms, and enterprise-grade Shopify solutions designed to eliminate manual workflows and slash operational overhead. Over the past 8+ years, I have built 100+ custom Shopify stores, themes, and apps. My focus is bridging the gap between artificial intelligence, custom software architecture, and e-commerce, transforming traditional business operations into autonomous, high-growth engines. I replace complexity and repetitive manual labor with intelligent, scalable infrastructure. Clients usually hire me for three things: AI Automation & Business Optimization Designing and integrating custom AI systems to handle data processing, asset generation, and operational tasks Replacing manual bottlenecks with intelligent workflows and custom AI agents tailored to specific business logic Embedding smart automation into backend management to completely remove human friction from day-to-day operations SaaS & Custom App Development Developing robust standalone SaaS products and custom applications from scratch Building public and private Shopify apps with custom business logic and deep API integrations Architecting external infrastructure that syncs seamlessly with core platforms via high-performance web architectures Advanced Shopify Plus Engineering Developing high-performance custom themes and storefronts built from scratch for maximum speed Engineering complex cart, checkout, and custom subscription contract flows using the GraphQL Admin API Replacing bloated third-party app dependencies with clean, native infrastructure and scalable architecture I approach every project as a product architect. Whether you need to launch a new SaaS platform, embed intelligent AI automation into your workflows, or engineer a high-converting enterprise store, I build systems that scale. If you are looking to eliminate manual bottlenecks, optimize your operations, and build autonomous technical infrastructure, let us build something that performs.

I have more than 15 years of programming experience. As a freelancer, I have broad experience: I developed web (ASP.NET, Python, PHP), desktop (C++, C#, Python — Linux and Windows) and mobile (Android — Java, C++) applications. I list here some of my jobs. C#: * clubspeed.com — a large software suite for family entertainment clubs; included C# code (80%), including CoreApi and ASP.NET Razor, plus PHP (Laravel) and Node.js code (for low-level car racing control tasks). I developed it as a team member. * qadra.com — a financial company; C# code (80%), Python (some microservices are Python/Flask based, 20% of code), AWS-hosted with Docker containers and Lambdas. I developed it as a team member. * enven.nl — implemented from scratch their non-public partners portal: ASP.NET Razor and some CoreApi endpoints. * ASP.NET website for house rentals. * ASP.NET website for remote control of a robotic device via a WebSocket connection. * Vegetable-oil plant automation desktop program (C# + WinCC). Python: * Embeddable fact-checking chat that uses the LangGraph framework to implement a customizable LLM/AI backend (OpenAI, DeepSeek, Hugging Face, or Ollama). It allows administrators to embed the component in their websites so users can ask questions about facts described in articles and verify whether facts listed in an article are true. It included agentic code and many external APIs to check facts (not just asking an LLM), and even computer vision to inspect website photos (OpenCV). Backend is FastAPI. * AI/LLM-based ad selection for a website (FastAPI and LangGraph). It processes website text or chat messages and selects ads of different types related to the content. It contains SDKs for embedding ads on many platforms, including Go, React, and plain HTML. * Polish-language training software, based on Django and LangGraph. * Many small projects: desktop scripts, web scraping (Selenium and related tools), and simple AI agents. C++: * Factory equipment monitoring system (Ubuntu Linux, custom server over TCP/IP, web interface in PHP). * Many small projects, some of which are mentioned in reviews on this profile; many are non-public. * Powerful software for automated ad submission on social networks (massive bots that send millions of messages). PHP: * 20+ websites — without CMS, with my own CMS, and with open-source Drupal, WordPress and Joomla CMSs. * Backends for Android applications. Android: * SOCKS5 proxy application that allows sharing mobile VPN with non-mobile clients via the SOCKS protocol. * Many WebView-based "business card" applications. * Dating-related applications, including erotic puzzles. Human emulation: * Spam bots — I cannot provide a specific list of such software for legal reasons. * Automatic checkout on eBay and similar websites. * PayPal automatic payments. * Data scraping, including air tickets and goods in online stores. Reverse engineering — I cannot provide a specific list of reverse-engineered software for legal reasons. * Java bytecode reverse engineering, including Android. * .NET bytecode reverse engineering. * Machine code for 32-bit and 64-bit x86 and ARM CPUs. Assembler: * High-performance cryptographic library for x86\_64 CPUs.

I am a software architect & developer with over 18 years of experience. I specialize in designing, developing and connecting various systems and technologies together, starting from embedded systems, through web, mobile and desktop applications, ending on backend (server-side) software. I'm also system administrator and a Linux-geek. Feel free to contact me if you have any work to do! Especially C++/C/Python/C#/Linux related. You can find much more information on my website. I also encourage you to check my GitHub profile.

🥇 TOP RATED PLUS 🙌 100% JOB SUCCESS 🧐 15+ years of varied experience in architecture and development of JavaScript/Node.js/PHP web applications, scrappers and services for different companies and startups. I love to skillfully combine various technologies to solve non-standard problems of any architectural and logical complexity. I masterfully use cluster technologies, which allows me to create high-quality, high-speed, high-availability, fault-tolerant products that don't require constant maintenance. I can easily bypass any protection to obtain data from any sources. I'm interested in long-term relationships. ✓ Technologies:  Web Architecture | Distributed Systems | High Availability Clustering  Web Scraping | Content Distribution Networks (CDN)  Microservices | Virtual Machines (VM) | Live Video Streaming  Virtual Private Networks (VPN) | Containerization ✓ Programming languages & platforms:  JavaScript/TypeScript | Node.js | PHP ✓ Databases:  PostgreSQL | MySQL | MariaDB | Patroni  Redis | Redis Sentinel | Redis Cluster | MongoDB  Knex ORM | Prizma ORM | Drizzle ORM | Eloquent ORM | Mongoose  SQL | NoSQL ✓ Back-end technologies:  Node.js | Express.js  Laravel | Eloquent | Sanctum  Fetch | Ofetch | Axios  WebSockets | Socket.io | WebRTC  Ajax | JSON REST API | GraphQL | OAuth | JWT  Blockchain | Solidity | Web3.js  Stripe | Google Maps API  Data Mapping & Combination  Load Balancing  Telegram Bot Development ✓ Front-end technologies:  Vue 2 | Vue 3 | Pinia | VueX | Nuxt 2 | Nuxt 3 | Composition API | Options API  PrimeVue | Quasar | Vuetify | Tailwind CSS  Fetch | Ofetch | Axios  WebSockets | Socket.io | WebRTC  Server Side Rendering (SSR)  D3.js  Chrome Extensions  HTML | CSS | SASS/SCSS | LESS | PostCSS ✓ Automation/Crawling/Scrapping/Scanners:  Puppeteer  Chrome Extensions | Manifest V2 | Manifest V3  Perimeter X bypass  CloudFlare bypass  JS Injections  Decryption | Decoding  HTTP Proxy/VPN using ✓ Bookmaker Odds, Widgets & Livestreams (zero latency scanners):  Bet365 | Pinnacle | BetMGM | Betradar | Virginbet | Fonbet | Olimp ✓ Desktop technologies:  Electron.js ✓ Tools & Common:  Docker | Docker Compose | Kubernetes | Grafana | OpenSearch | Ansible  Git | GitHub | BitBucket | GitLab  CI/CD  NPM  Apache | Nginx  Gzip | Brotli  Java | C# | C++  Linux Administration (CentOS/Debian/Ubuntu) ✓ Cloud Providers:  Amazon Web Service (Lambda, EC2, S3, API gateway, Cognito, DynamoDB, etc.)  Microsoft Azure  Google Cloud Platform  Firebase (Cloud FireStore, Realtime Database, Cloud Functions)  Digital Ocean  Hetzner Cloud ✓ Areas of interest:  iGaming | Betting | Sportbooks | Onling Gambling | eSports  Artificial Intelligence | Deep Learning | Machine Learning  Cryptocurrency Trading If you have any questions or want to discuss your project, feel free to contact me. I'm always happy to make time for you. Thanks.

10+ years of software engineering experience. Former UpWork employee (was laid off with 21% of the workforce). My goal is to help you achieve more spending less time and money. Working on Ptah.sh - Docker Swarm-based Heroku and Vercel alternative. I have rich experience working with different technologies: from PHP & Python, through JavaScript and Go, to mobile development with React Native and Flutter. Started multiple projects on my own: - e-sportstats.com - where I was a CTO and led a small team of 5 engineers - ptah.sh - Docker Swarm-based Heroku alternative where I am the sole founder and engineer Among that, I lead various conferences and made a couple courses for internal use for the companies I've been working with.

CTO and Data/AI Architect with 15+ years building production systems, from early-stage products to Fortune 500 enterprise platforms across the UK, US, and EU. I focus on resilient architecture, clear technical strategy, and AI systems that deliver measurable outcomes in B2B data-rich environments. I've designed and shipped data platforms, agentic RAG systems, multi-agent workflows, AI copilots, and orchestration layers integrating knowledge graphs, semantic layers, and multiple data sources. Domains: SaaS, BI, process intelligence, analytics, fraud detection, supply chain, distributed systems. ① AI & Data RAG end-to-end: chunking, retrieval, reranking, evaluation, monitoring Knowledge graphs: schema design, entity resolution, hybrid KG+RAG retrieval (Neo4j) Multi-agent systems: ReAct, MoE, MoA, hierarchical workflows, tool-using agents Orchestration: MCP, A2A, agent routers, tool registries Observability: latency/cost budgets, guardrails, failure modes, rollout strategy ② Technology Python, SQL, Ruby | Microservices, event-driven, APIs ClickHouse, BigQuery, Redshift, PostgreSQL, Apache Iceberg, Kafka, dbt LangGraph, LangChain, LangSmith, CrewAI, AutoGen, GCP ADK Neo4j, Pinecone, pgvector, Qdrant, FAISS, OpenSearch Docker, Kubernetes, Terraform, Helm, CI/CD Grafana, Prometheus, Looker | AWS, GCP ③ What I Lead CTO-level leadership: strategy, roadmap, delivery governance Data platform architecture: pipelines, modelling, KPIs, governance, cost control AI productisation: prototype to production with evaluation, monitoring, and guardrails Team building: hiring, mentoring, accountability for predictable delivery If you need a CTO-level partner who can architect, build, and lead from strategy to execution, with depth in both AI/Data and engineering reality, I'm the right fit.