Hire the Best Symfony Developers
in Poland

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.

⚡ High-Velocity Developer | 100% Success Rate Need results yesterday? I specialize in rapid, high-quality development powered by 15+ years of expertise and modern AI-assisted workflows. I combine the seasoned intuition of a veteran developer with the speed of today’s best tech. Proven: 100% Job Success Score. Fast: Optimized delivery cycles. Smart: Deep AI integration to 10x productivity and feature set. My technical expertise is extensive, encompassing PHP, Symfony / Laravel Framework, MySQL, and noSQL Databases (MongoDB, Redis). I'm proficient in node.js (socket IO framework, express), and JavaScript (Stencil JS, Ionic, React), and have built APIs using common architectures such as REST and GraphQL. Additionally, I bring to the table experience in managing AWS infrastructure and other servers based on the Linux Operating System specifically for hosting PHP / Symfony projects. My portfolio also includes building HTML mobile apps (Hybrid apps in frameworks like Ionic/Cordova). I’ve worked across a range of industries, including e-commerce, affiliate marketing, real estate, automotive, aviation, courier services, and healthcare. I have very good knowledge of Symfony Components, Doctrine ORM, PSR standards. I have also used across various projects Easy Admin, API Platform, DomPDF, Guzzle, SwiftMailer, Contao CMS and Amazon SP-API libraries. I have experience working with big data solutions - BigQuery, Adverity Datatap, building continuous cost-effective scraping solution and reliable process automations using make com (formerly integromat) Particularly, my most recent projects have been centered around the Symfony framework, granting me continuous and profound expertise in the Symfony / PHP ecosystem. My grasp of software development techniques is solid, including writing clean and secure code, object-oriented development, and designing application architecture with a focus on extensibility and scalability. I have recent experience in building projects that integrate AI features through the OpenAI / Fal APIs. For some significant period of time i was reponsible for building and maintaining shopify websites, including building custom theme, plugins that were enriching logically Shopify and also checkout cusotmisations Beyond just development, I make it a point to grasp a thorough understanding of the entire project from the end user's perspective. My years of experience enable me to provide accurate insights and advice on enhancing your project. What excites me most is problem-solving. I thrive on unraveling complex, challenging issues, and the software industry continually nurtures my knowledge and creativity. I'm also a fan of machine learning, possessing experience in Octave and the R language, along with theoretical knowledge in machine learning techniques. Recently, I have gained experience in building apps utilizing OpenAI APIs, further broadening my skill set. I take pride in being a versatile “one-man army” in Full Stack Development, capable of delivering fast, reliable results. My goal is to handle all your development needs efficiently - so you can stay focused, worry-free. I'm on the lookout for new challenges. If you're interested in working with me, I'd be eager to discuss how I can contribute to your project. Paweł

I have been working as web developer for over 12 years I have learned all Ecommerce ins and outs and I am happy to implement my skills and knowledge to develop and support eCommerce stores, sites. Custom web development is a challenge for me. How can I improve your business: - Ecommerce website development from scratch; - Magento integration with payment, shipping, accounting and marketing systems; - Magento, Prestashop, Drupal theme and extension development. I do not just create websites based on a certain platform. I deliver eCommerce development solutions. - Why hire me as Magento, Prestashop, Drupal developer - Ready to answer all your questions via email 24/7 - Always listen to the client and ready to implement tasks I will be the best asset to your project. My previous experience in web development - Custom Magento development for famous food UK brand - Migration to Mageno from other cms for modern Shoes website - Bug fixing and consulting for online food retailer in the United Kingdom - Payment processor integration in eCommerce for Girard Sudron, France - Security Patches installation for all projects My main skills: - Frameworks: Laravel, Symfony, Zend, Yii2 - CMS: Magento 1/2, PrestaShop, Drupal etc - PHP 7 - MySQL (MariaDB, Percona) - NoSQL: MemcacheDB, Redis, MongoDB - GIT workflow - JS, HTML, CSS skills - Ready to work with Linux (apache/nginx, PHP, MySQL, Memcached, Redis, Varnish) - Know how to work with Redux, React, Vue etc. - PSD/Sketch to html/css. - Project management systems: Jira, Redmine or any other according to your requirements I do not believe in luck, I believe in hard work. Ready to improve your web business? Feel free to contact me.

💼 AI Developer | OpenAI developer | AI developer Zapier | Python data engineer for real-time data pipeline | AI developer LangChain 🏆 TOP RATED PLUS | 💰 $5M+ Client Revenue | 💼 111+ Projects Delivered | ✅ 11,000+ Upwork Hours 💡 Clients Achieved: 🚀 Faster delivery – AI systems cut weeks of manual work 💰 Revenue growth & efficiency – automated workflows and AI agents increased ROI ⏱️ Time savings – streamlined operations, reduced human effort ✅ Reliable, production-ready AI – systems deployed safely and scaled in real-world environments 📊 Data-driven insights – AI-powered analytics, RAG pipelines, and persona simulations improved decision-making I am an AI Developer and OpenAI developer specializing in designing and deploying production-ready AI systems that combine advanced machine learning models with scalable backend engineering. As an AI developer LangChain specialist and AI developer Zapier expert, I help businesses turn complex AI concepts into reliable real-world solutions. I also work as a python data engineer for real-time data pipeline development, building streaming, event-driven, and analytics systems for AI-powered applications. ⚡🤖 AI Agents & Autonomous Systems 🤖 As an AI Developer and AI developer LangChain engineer, I create intelligent agents capable of reasoning, planning, memory retention, and multi-step workflows. These systems integrate OpenAI developer APIs and AI developer Zapier automation layers for real business execution and reliability. Voice AI & Communication Platforms 🎙️ I develop low-latency real-time AI voice systems using Twilio and STT → LLM → TTS pipelines, built as an AI developer and OpenAI developer for scalable conversational AI with backend-controlled logic, interruption handling, and production deployment. RAG Pipelines & Data Intelligence 📚 As an AI developer LangChain specialist and OpenAI developer, I implement Retrieval-Augmented Generation pipelines for fast, accurate, and auditable access to internal data. This includes embeddings, metadata pipelines, vector databases (Pinecone, Qdrant, Weaviate), and python data engineer for real-time data pipeline architectures. Backend Engineering & Cloud Deployment ☁️ I build robust Python/TypeScript backend systems with FastAPI, Django, and Node.js, acting as both AI developer and python data engineer for real-time data pipeline solutions. I deploy scalable systems on AWS, GCP, and Azure using Docker, Kubernetes, monitoring, and autoscaling. 🚀 Selected Projects Monitoring & Summarization Tool ⚖️ – Automated regulatory updates, cutting manual review time and delivering clear summaries. Built by an AI Developer to make compliance faster and smarter. I Persona Simulation 👥 – Transformed Reddit discussions into interactive synthetic personas for marketing insights. Engaging AI experiences designed by an AI Developer. Centefuse AI – Content Generation ✍️ – MVP platform for automated social media content and scheduling. High-quality output with minimal client effort, engineered by an AI Developer. Waste Classification App ♻️ – Mobile AI solution for classifying and estimating waste quantities. Flexible, hardware-free, and efficient – crafted by an AI Developer. AI Script Generator 🎬 – Generative AI for screenwriters to structure stories and draft scripts quickly. Accelerates ideation while preserving creativity, built by an AI Developer. Client Testimonials ⭐⭐⭐⭐⭐ “Great work, very professional. Good at gathering input. Talented variety of staff.” – AI Chat, Recorded Calls, Coaching AI Platform ⭐⭐⭐⭐⭐ “Very professional and technically capable. He was able to work within my budget and deliver a top notch product.” – Marketplace Development II ⭐⭐⭐⭐⭐ “Outstanding work during the discovery phase. The team was prepared, communicated clearly, and proposed elegant, efficient solutions that exceeded our expectations.” – AI-powered Treatment Writer Why Clients Work With Me 💼 Delivery of clean, maintainable, production-ready AI solutions Expertise bridging AI models and backend engineering as an AI Developer Predictable results with scalable architectures Clear communication and collaborative approach

Software development expert with ~20 years of experience, excellent analytical and problem-solving skills. (you are welcome to scroll my reviews to last page and see first reviews dated 2004) Technology stack: - PHP: Symfony, Laravel, Zend frameworks, API Platform, Doctrine, Eloquent - JS/TS/ES: Vue, React, Angular, Node, Alpine, Inertia, Livewire, Tailwind - Python: Django, Flask, Chat/GPT/OpenAI - DB: MySQL, Postgres, Mongo - RabbitMQ, Redis, ElasticSearch, Memcached - Git, Jira, Bitbucket, Redmine - Docker, Linux administration - AWS services, Websockets, JWT, OAuth2, Firebase - TDD, BDD, PHPUnit - Experience with LinkedIn, Google, Facebook APIs You are welcome to check my lifetime work history and feedback to see proofs of my expertise.

Hi, I've been developing web applications for more than 9 years, starting back in 2013 with custom PHP/MySQL, no framework project, switching my focus onto ZF1 in 2013-2014 and now focusing on frameworks like Laravel and symfony. I've had a chance to work with the following PHP frameworks: ✅ symfony (2.x-6.x) ✅ Laravel (4-10) ✅ microframeworks like Slim, Lumen I'm using the following standards/recommendations/technologies in my daily work: ✅ SOLID principles ✅ PSR recommendations ✅ TDD - always trying to reach 100% coverage of my code ✅ RESTful, GraphQL APIs I'm used to working in agile environment, combining Kanban and SCRUM aspects in the development process. Recently I realised a good developer has to focus on the client's business goals and better communication. These skills are much harder to master than learning a new framework. As for the tech stack, here are some of the technologies I've mastered so far: ✅ AWS (EC2 with autoscaling, RDS, S3, SES, SQS, SNS, Route53, CloudFront, Lambda etc) ✅ PHP 5.x, 7.x, 8.x ✅ RFC 2616, knowing HTTP protocol inside-out ✅ composer Here is the tools I'm using in my local setup: ✅ Ubuntu LTS ✅ PHPStorm ✅ git ✅ slаck and Skypе for communication ✅ docker, docker-compose I've been working on long term projects and would like to continue doing so. Let's start with a free trial task - no cost and no obligations. We'll get to know each other and I can convince you in my skills. Let's have a skypе call discussing your project and me completing a free test task to show my skills!