IT

A comprehensive client portal enabling customers to access and manage their financial documents, invoices, and account information. The system integrates with ERP systems to provide real-time data synchronization and automated document generation. Features include role-based access control, document search and filtering, payment tracking, and automated notifications.

A full-stack web application for managing survival gear, bug-out bags, and outdoor equipment, combining offline-first localStorage storage with a synchronized backend for multi-user, multi-device use. Features hierarchical gear containers with nested items, weight and readiness tracking, rich item metadata (category, priority, expiration, shelf life), and AI-ready JSON/Markdown/CSV import-export. The backend provides JWT authentication with OAuth and WebAuthn/passkey-based 2FA, a role system (Owner, Premium, Admin, User), and Stripe-powered subscription billing (Free/Pro/Pro Plus tiers) alongside AI-assisted gear recommendations, a public container gallery, and an admin dashboard.

A reusable template for building company websites with modern technologies. Multiple client websites have been built using this template, featuring responsive design, performance optimization, and SEO-friendly structure.

Central operations monitoring system that polls remote servers and applications for health and system metrics, stores historical snapshots in PostgreSQL, and presents them on a Vue 3 dashboard. Sends deduplicated alerts via MS Teams webhooks with per-channel routing, quiet hours, and severity thresholds. A lightweight standalone Python agent runs on each monitored server to report system metrics (CPU, memory, disk, pending updates, reboot status).

Internal proof-of-concept for an AI assistant layered over the firm's back-office systems: a chat agent that lets employees query business data in natural language and get answers with source citations. Explores a range of AI techniques — a prompt router for query classification, RAG over a knowledge base (Qdrant + bge-m3 embeddings), persistent facts memory injected into context, and a growing set of MCP (Model Context Protocol) tool servers integrating multiple internal systems for read-only data access. Ships as both a web app and a Windows desktop client (Tauri), running on a self-hosted LLM (Ollama).

An AI-powered classifier that automatically assigns accounting dimension codes to invoice line items, supporting the bookkeeping process — a decision-support tool reviewed by accountants. Uses a two-stage RAG + LLM pipeline (semantic search with Qdrant + classification with Ollama) orchestrated in n8n, with a dedicated dashboard for monitoring classification quality and throughput. Currently being rolled out to production.

A comprehensive multi-tenant SaaS platform designed for small to medium businesses to manage their operations. Features include company management, financial document handling, task management, and team collaboration. The system integrates with multiple external APIs including Polish REGON database for company verification, Ministry of Finance APIs, EU VIES for VAT validation, and IBAN verification services. Includes Stripe integration for subscription payments and comprehensive admin dashboard.

Api service integrating company data from REGON, MF, VIES and IBAN APIs.

Development of a personal website for a software engineer.

Developed a comprehensive JIRA Connect App and microservice to seamlessly integrate project management workflows with our internal systems. The solution synchronizes issues, worklogs, and project data bidirectionally, enabling automated time tracking, project reporting, and workflow management while maintaining data consistency across platforms.

Built a flexible document generation microservice that creates professional business documents from templates. The system handles dynamic content injection, formatting, and supports various output formats for generating contracts, agreements, and other business documentation with consistent branding and legal compliance.

Implemented an intelligent document processing microservice leveraging Azure Computer Vision API to extract and digitize text from scanned documents, invoices, and forms. The service includes preprocessing capabilities, confidence scoring, and structured data extraction to automate document digitization workflows and reduce manual data entry.

Built a modern web portal that integrates with Poland's official e-Doręczenia (electronic delivery) system, enabling secure digital document delivery and receipt confirmation. The application features a responsive Vue.js frontend and a robust Django backend handling API communications with government services.

Developed a comprehensive microservice to integrate Poland's KSeF (National System of e-Invoices) with our existing client portal. The system handles XML invoice processing, validation, and automated submission to government services, ensuring compliance with Polish e-invoicing regulations while providing seamless user experience.

Tax Order is a web application for managing the tax order of a company.

EDI integration between a major international retailer and their suppliers, integrated with Asseco Softlab ERP.

A manufacturing execution system tailored to production floor operations, integrated with ERP, and extended with modules for service tracking and time & attendance (RCP). Supported RFID and barcode-based workflows.

Contributed to the development and implementation of a custom WMS module within Asseco Softlab ERP, adapted to the operational needs of three different companies.

A production scheduling interface based on a Gantt chart integrated with Asseco Softlab ERP. The solution allowed users to visualize and manage production plans using a commercial JavaScript component. It included integration of production data through Microsoft SQL Server and customization of the frontend within the ERP environment.

Contributed to the development and implementation of a centralized logistics platform to coordinate and synchronize operations between the ERP systems of three separate companies. The integration relied on database-level synchronization resembling event sourcing. The project aimed to unify key business processes such as order and inventory management.

Development of a web application for conducting the Implicit Association Test (IAT), used in psychological research to measure unconscious biases. The tool was created on request for a postgraduate research project at the University of Warsaw.