Experience: e-commerce, native apps and AI integrations

I am a developer with more than 16 years of experience in designing, building and maintaining e-commerce systems, web applications and backends for native apps. For years my core specialisation has been PrestaShop, and around it I have built expertise in Symfony, Sylius, WordPress/WooCommerce, Flutter and integrating AI models into real sales and operational processes.

I work directly with store owners, agencies and IT departments. I take responsibility for the whole cycle: analysis, architecture, implementation, performance, security and maintenance. I build solutions that can be updated and extended for years, without modifying core files and without depending on a single person.

Technologies and skills

PrestaShop - core specialisation

• Custom modules and own products - marketplace integrations (TikTok Shop, InPost Merchant), EU compliance (GPSR, Omnibus, Digital Product Passport, Directive 2023/2673), payments, carriers, document printing.

• Migrations and upgrades - 1.6 → 1.7 → 8.x → 9.x while keeping data, themes and integrations; migration plans that keep store downtime to a minimum.

• Performance and security - SQL and cache optimisation, VPS configuration for PrestaShop (Redis, PHP-FPM, Cloudflare), malware removal, audits and hardening.

• Support and development - ongoing technical care, checkout and sales logic customisation, WCAG 2.1 AA implementations, multistore.

Native apps and API backends

• Flutter (iOS / Android) - mobile apps for stores and businesses: catalogue, orders, push notifications, login, payments, offline mode.

• Backends for native apps - REST and JSON APIs in Symfony, authorisation (OAuth 2.0, JWT), versioning, queues, webhooks, real-time communication, high-traffic handling.

Symfony, Sylius and bespoke systems

• Symfony Framework - service architecture, events, Messenger, security, tests; production applications maintained for years.

• Sylius - implementations and extensions of the Symfony-based e-commerce platform for projects that need custom sales processes and integrations.

• Symfony Sonata (Admin / Project) - admin panels, corporate portals and intranets with granular permissions.

Artificial intelligence in products and processes

• Anthropic Claude API and Claude Code - assistants inside e-commerce back offices, developer workflow automation, agents performing tasks in client systems.

• OpenAI API (GPT), xAI Grok API, Google Gemini API - content generation and translation, category and attribute mapping, product classification, integration error explanations, price anomaly analysis.

• Model Context Protocol (MCP), RAG and embeddings - connecting models to store data (products, orders, stock) with cost control, request limits and encrypted keys.

WordPress / WooCommerce

• Corporate websites and WooCommerce stores, custom plugins and mu-plugins, integrations with external systems, B2B solutions, technical SEO and performance.

Integrations and external systems

• ERP, WMS, PIM and production systems - data exchange via APIs, files and queues; synchronisation of products, stock and orders.

• Payments and logistics - Przelewy24, Tpay, PayPal, BLIK; InPost, GLS, Orlen Paczka and other carriers.

• Marketplaces and social media - TikTok Shop, InPost Merchant, Facebook / Instagram APIs, publishing automation.

• Streaming / media - backends for video platforms (Wowza Streaming Engine), access management and user authorisation.

Frontend, databases and tools

• JavaScript / jQuery / Node.js, HTML5 / CSS3 / SASS - responsive interfaces, API-driven components, performance and UX.

• MySQL / MariaDB / MongoDB - data structure design, migrations, query optimisation.

• Git, code review, staging environments - team workflows, deployment process, backups and rollback.