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Achievements

Achievement: Pair Extraordinairex2Achievement: QuickdrawAchievement: YOLOAchievement: Galaxy Brainx4Achievement: Arctic Code Vault ContributorAchievement: StarstruckAchievement: Pull Sharkx3

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@YetiForceCompany

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mariuszkrzaczkowski/README.md

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👋 Who I am

I'm Mariusz Krzaczkowski — Solutions Architect & Senior IT Engineer at YetiForce, an open-source enterprise CRM/ERP used by companies across multiple markets. For 15+ years I've been building, scaling, and securing complex software systems end-to-end.

I'm a full-scope engineer: I think it's normal to design a multi-tenant data model on Monday, debug a low-level PHP extension on Tuesday, harden a Linux server on Wednesday, ship a CI/CD pipeline on Thursday, and review a vulnerability report on Friday.

My expertise spans across full development lifecycle—from architectural decisions and backend optimization to DevOps automation and security-first practices. I'm passionate about solving complex technical challenges and contributing to the open-source ecosystem.

🧭 What I do

🏗️ Solutions & Enterprise Architecture

  • Scalable CRM/ERP and microservice architectures
  • Multi-tenant data models, modular update mechanisms
  • Long-term technology strategy, DDD, event-driven design

💻 Full-Stack Development

  • PHP (expert) · TypeScript / JavaScript (advanced) · Python · Bash (intermediate)
  • SQL (expert) — schema design, query optimization, replication
  • APIs, integrations, business logic at enterprise scale

🔧 DevOps & SysOps

  • Docker & Docker Compose, container orchestration
  • CI/CD: GitHub Actions, GitLab CI
  • IaC: Ansible · Virtualization: Proxmox VE
  • Observability: Wazuh (SIEM/XDR), Zabbix

🔐 Security & Quality

  • OWASP Top 10, secure SDLC, vulnerability triage
  • GDPR-aligned data protection
  • Bug bounty researcher (Huntr)
  • QA workflows, automated testing, performance engineering, code review

🛠 Tech I work with

PHP TypeScript JavaScript Python SQL Bash

Docker GitHub Actions GitLab CI Ansible Proxmox Linux

Wazuh Zabbix OWASP GDPR R&D Open Source

🔭 Current focus & interests

  • 🐾 Scaling YetiForce as a product — more integrations, more automation, more enterprise features
  • 🛡️ Cybersecurity — application security, vulnerability research, secure-by-default patterns
  • 🤖 AI-assisted engineering — using LLMs responsibly inside enterprise software workflows
  • 🌐 Internationalization — making enterprise software truly global

📊 GitHub activity

Metrics Github Profile Metrics Github Contributions Metrics Github Repositories Metrics Github Activity Community

Metrics Programing Languages

📫 Let's talk

Open to conversations about enterprise architecture, product development, cybersecurity, AI in enterprise software, and open-source collaborations.

📍 Warsaw, Poland · UTC+2 · Senior IT Engineer & Solutions Architect at YetiForce

Pinned Loading

  1. YetiForceCompany/YetiForceCRM YetiForceCompany/YetiForceCRM Public archive

    We've moved! For more information, visit https://github.com/YetiForceCompany/YetiForce

    PHP 1.8k 772

  2. YetiForceCompany/YetiForcePortal2 YetiForceCompany/YetiForcePortal2 Public archive

    The Customer Portal complements YetiForce CRM and is the most effective communication tool for your customers. This version of Portal is only compatible with YetiForce version 6.4.

    CSS 44 29

  3. YetiForceCompany/UpdatePackages YetiForceCompany/UpdatePackages Public

    Update packages for the YetiForce CRM system

    PHP 13 61

  4. YetiForceCompany/YetiForceScripts YetiForceCompany/YetiForceScripts Public

    PHP 11 21

  5. jitsi/jitsi-meet jitsi/jitsi-meet Public

    Jitsi Meet - Secure, Simple and Scalable Video Conferences that you use as a standalone app or embed in your web application.

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  6. zircote/swagger-php zircote/swagger-php Public

    A php swagger annotation and parsing library

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