Mateusz Kucharczyk
Open to Work

Architect.
Leader.
Engineer.

24+ years of building scalable systems and leading technical teams.

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Profile

Started writing code in 2000. Still do - now I also design the systems around it and lead the people building them.

From early websites and custom CMS platforms to microservice architectures serving millions of users. I've led teams of nearly 20 people, mentored team managers, and led architecture overhauls at two major companies.

I care as much about who maintains the system as how it's designed. I choose boring technology when it fits, reach for newer tools when they pay off, and make sure stakeholders understand the tradeoffs either way.

Experience

Career history across product, platform, and consulting roles.

FotoLIB logo

FotoLIB

Founder & Developer · 2009 - Present

Own Product

Multi-agency platform managing 7M+ images for professional photo agencies. Built, maintained, and grown entirely by me since 2009. Archiving, cataloging, search, e-commerce with payments, and license generation - all in one platform.

Visit FotoLIB

Career Timeline

G2A.COM

Jul 2017 - Feb 2026 Kraków

Product Owner @ Horizon Platform / Architect

Sep 2019 - Feb 2026

Responsible for the platform behind all company-facing sites, serving millions of daily unique users. Reduced deployment time from days to minutes, enabling multiple daily releases. Built and rolled out a design system adopted by all product teams. Ran two adjacent platforms - one hosting all public-facing sites, the other generating internal admin panels.

Software Development Lead / Architect

Aug 2018 - Sep 2019

Led architectural transformation from monolith to microfrontend platform that all future company frontends were built on. Split one large team into specialized squads, each owning a service domain. Set architectural standards and quality gates used across engineering.

IT Supervisor / Team Lead

Dec 2017 - Aug 2018

Led the deployment and stabilization of the company's hosting platform. Introduced code reviews, testing standards, and documentation practices. Shifted the team toward shared ownership of production stability.

Senior Javascript Developer

Jul 2017 - Dec 2017

Built features end-to-end based on business requirements. Established code reviews and coding standards across backend, frontend, and QA teams.

DreamLab (Onet.pl)

Mar 2012 - Jul 2017 Kraków

Software Architect

Oct 2016 - Jul 2017

Designed a heuristic-based anti-spam system for OnetPoczta, one of Poland's largest email services. Built management and filtering tools for the email operations team.

Senior Software Developer

Jul 2015 - Sep 2016

Led the Onet Webmail frontend migration from a monolith to a component-based architecture. Introduced coding and testing standards. Coordinated integration with an external technology partner.

Developer

Mar 2012 - Jun 2015

Extended the Onet webmail application with new features while reducing technical debt.

qchar.pl

2002 - Present Freelance

Fullstack Developer

2002 - Present

Custom software for commercial clients - websites, CMS platforms, a virtual home configurator with cost estimation, and telecom pricing tools. Sole developer: gathered requirements, built, deployed, and maintained.

Infonet Projekt

2000 - 2002

Fullstack Developer

2000 - 2002

Websites and CMS platforms for commercial clients and municipalities. Purpose-built CMS solutions for each client.

Skills

Technologies and tools I work with in production.

Backend Node.js
Most of my backend work runs on Node.js - APIs, microservices, async workers.
Language TypeScript
Primary language across most of my work - frontend and backend.
Performance Rust
High-performance systems, media processing engines, and CLI tools.
Frontend React
Component-based UIs, SPAs, and complex interactive interfaces.
Cloud AWS
EC2, S3, CloudFront, Lambda, RDS - production infrastructure at scale.
Messaging RabbitMQ
Async workflows, event-driven architecture, job queues.
Infrastructure Docker
Standard part of my stack for dev, CI, and production deployments.
Architecture Microservices
Distributed systems design, service decomposition, API gateways.
Observability Grafana / ELK
Metrics dashboards, log aggregation, alerting, and performance monitoring.
Delivery CI/CD
GitHub Actions, automated testing, zero-downtime deployments.
Web SEO / I18N
Search optimization, multilingual platforms, content localization.
AI Tools Claude Code
Daily driver for development - refactoring, test generation, and rapid prototyping.
IaC Terraform
I manage all cloud infrastructure through Terraform - provisioning, updates, and teardowns.
Automation Ansible
Server configuration, deployment orchestration, and infrastructure automation.
Virtualization Proxmox
Self-hosted virtualization - running my own infrastructure on physical hardware.
Systems Linux
Every server I manage runs Linux. Comfortable with shell scripting and low-level diagnostics.

How I Can Help

B2B services for companies that need senior technical leadership.

System Architecture

Whether you're starting fresh or untangling a monolith, I design systems your team can actually maintain.

Team Building & Mentoring

I help tech leads become managers and help teams ship with confidence.

Platform Engineering

Building internal platforms that accelerate delivery. CI/CD pipelines, developer tooling, deployment automation.

Technical Audits

Independent code reviews, architecture assessments, and a clear plan to pay down tech debt.

Legacy Modernization

Step-by-step migration plans - no big-bang rewrites, no feature freezes.

Engineering Strategy

Technology decisions framed in business terms - what to build, what to buy, and when to migrate.

Let's talk.

Available for consulting, technical leadership, and architecture reviews.