Engineering leader with 14+ years building scalable enterprise solutions. Custom applications, workflow automation, and open-source n8n integrations.
What we can do for your business
Tailored web applications built with PHP, Symfony Framework, and Go. From enterprise systems to API backends, we deliver scalable, maintainable solutions.
Streamline your business processes with n8n workflow automation. Connect your systems, eliminate manual tasks, and save time.
Custom n8n community nodes for Polish government APIs and business services. Open-source, production-ready, zero-config.
Architecture reviews, code audits, performance optimization, and scaling strategy. 14+ years of hands-on experience solving complex technical challenges across e-commerce, logistics, SaaS, and fintech.
Tools and technologies we work with daily
Server-side scripting for web applications, from legacy systems to modern architectures.
Enterprise PHP framework for building robust, scalable web applications and APIs.
High-performance, compiled language for building microservices, CLI tools, and concurrent systems.
Reliable relational database for high-performance data storage and retrieval.
Advanced open-source relational database with strong data integrity.
NoSQL document database for flexible, schema-less data storage.
Message broker for asynchronous communication between services.
Full-text search and analytics engine for fast data retrieval.
In-memory data store for caching, sessions, and real-time operations.
Containerization platform for consistent development and deployment environments.
Container orchestration for automated deployment, scaling, and management.
Cloud infrastructure for scalable, reliable hosting and services.
Frontend framework for building dynamic single-page applications.
Workflow automation platform with custom community node development.
Community nodes for Polish business APIs — install and automate
Verify contractors on the Ministry of Finance VAT white list before you pay an invoice
Query the National Court Register for company data — board members, shareholders, capital
Look up sole proprietors in the Polish business registry (dane.biznes.gov.pl)
Validate EU VAT numbers via the European Commission VIES service in n8n. Automate cross-border B2B compliance and invoice verification.
Coders Group is a freelance software development company founded by Michal Ploneczka in 2013. We specialize in building custom applications with PHP, Symfony Framework, and Go. Recently, we have expanded into n8n workflow automation, creating open-source community nodes for Polish government and business APIs.
We build custom n8n nodes, workflow automations, and web applications. Let's talk about your project.
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