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I'm Karol Padiasek, a senior full-stack software engineer with 15+ years of experience building scalable, high-traffic web platforms and e-commerce systems. I excel in backend architecture, API design, and AWS-based deployments, and I design modular, microservices-oriented systems prioritizing performance and maintainability. I love collaborating with cross-functional teams to deliver robust features that drive real value for users and stakeholders. I lead and mentor engineers, improve DevOps and CI/CD workflows, and work across greenfield SaaS, game/backend systems, and complex integrations. My experience spans Laravel, Node.js, React, and Unity-backed projects, with a focus on reliability, security, and clean code delivery.…I'm Karol Padiasek, a senior full-stack software engineer with 15+ years of experience building scalable, high-traffic web platforms and e-commerce systems. I excel in backend architecture, API design, and AWS-based deployments, and I design modular, microservices-oriented systems prioritizing performance and maintainability. I love collaborating with cross-functional teams to deliver robust features that drive real value for users and stakeholders. I lead and mentor engineers, improve DevOps and CI/CD workflows, and work across greenfield SaaS, game/backend systems, and complex integrations. My experience spans Laravel, Node.js, React, and Unity-backed projects, with a focus on reliability, security, and clean code delivery.

Karol Padiasek

Full Stack Developer, Back-End Developer, Web Developer, +4

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I'm Karol Padiasek, a senior full-stack software engineer with 15+ years of experience building scalable, high-traffic web platforms and e-commerce systems. I excel in backend architecture, API design, and AWS-based deployments, and I design modular, microservices-oriented systems prioritizing performance and maintainability. I love collaborating with cross-functional teams to deliver robust features that drive real value for users and stakeholders. I lead and mentor engineers, improve DevOps and CI/CD workflows, and work across greenfield SaaS, game/backend systems, and complex integrations. My experience spans Laravel, Node.js, React, and Unity-backed projects, with a focus on reliability, security, and clean code delivery.…I'm Karol Padiasek, a senior full-stack software engineer with 15+ years of experience building scalable, high-traffic web platforms and e-commerce systems. I excel in backend architecture, API design, and AWS-based deployments, and I design modular, microservices-oriented systems prioritizing performance and maintainability. I love collaborating with cross-functional teams to deliver robust features that drive real value for users and stakeholders. I lead and mentor engineers, improve DevOps and CI/CD workflows, and work across greenfield SaaS, game/backend systems, and complex integrations. My experience spans Laravel, Node.js, React, and Unity-backed projects, with a focus on reliability, security, and clean code delivery.

Available to hire

I’m Karol Padiasek, a senior full-stack software engineer with 15+ years of experience building scalable, high-traffic web platforms and e-commerce systems. I excel in backend architecture, API design, and AWS-based deployments, and I design modular, microservices-oriented systems prioritizing performance and maintainability. I love collaborating with cross-functional teams to deliver robust features that drive real value for users and stakeholders.

I lead and mentor engineers, improve DevOps and CI/CD workflows, and work across greenfield SaaS, game/backend systems, and complex integrations. My experience spans Laravel, Node.js, React, and Unity-backed projects, with a focus on reliability, security, and clean code delivery.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

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Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

Polish

Fluent

German

Advanced

Spanish; Castilian

Advanced

Work Experience

Senior Backend Engineer - AI & Data Systems at CompareIT

September 1, 2025 - April 1, 2026

Designed and developed core backend systems for an MSP discovery SaaS platform using Laravel, including advanced search, filtering, and data-driven matching. Implemented scalable API architecture and modular microservices-style components to support a React frontend, enabling dynamic dashboards, AI-assisted workflows, and real-time interactions. Integrated third-party data sources and ingestion pipelines for automated data enrichment. Built an AI-driven matching system translating natural language queries into structured filters and ranking logic. Collaborated with frontend, PM, and stakeholders to refine scope and ensure scalability. Implemented unit and integration tests with PHPUnit, following TDD principles where appropriate.

Full Stack Web Developer at Beep Digital

June 1, 2025 - July 1, 2025

Contributed to development of a custom CMS platform using Laravel and React.js. Built reusable UI components and integrated them with backend APIs. Worked with Livewire and Filament to enhance admin workflows.

Backend & DevOps Engineer at ControlHub

April 1, 2025 - May 1, 2025

Designed architecture for dual-platform system (admin + client-facing), ensuring secure data exchange and scalability. Built robust data synchronization mechanisms between the platforms to support real-time updates and secure cross-platform communication. Integrated invoice data from QuickBooks, exposing it securely to end users via ControlHub, while ensuring strict separation of concerns and tenant-level access control. Built and maintained staging and production environments (Proxmox VMs), implementing CI/CD pipelines and automated deployment workflows. Used LAMP/Laravel + ReactJS for both ControlHub and Tenant websites.

Full Stack Web Developer at Red Box Web Design Ltd

February 1, 2025 - March 1, 2025

Enhanced security and implemented new features in a modern web application for scheduling fire inspections. Developed and maintained a PHP/Laravel API and a ReactJS front-end within an AWS environment, utilizing Docker. Transformed the website into a Progressive Web App (PWA), enabling offline functionality for completing inspection reports.

Lead Developer / Technical Architect at Design Forge Ltd

August 1, 2024 - January 1, 2025

Led architecture and development of a Unity-based game platform, covering both client and backend systems. Designed and implemented backend services and APIs using Laravel 10, with MySQL and Redis for data storage and caching. Designed asynchronous service communication patterns and real-time event flows between backend systems and WebSocket services. Defined overall system architecture and design patterns, ensuring maintainability and extensibility across the platform.

Full Stack Web Developer / DevOps Engineer at Miura Systems

December 1, 2023 - July 1, 2024

Enhanced and maintained a PHP (Yii2) platform, delivering new features and improving system reliability. Designed and optimised CI/CD pipelines (GitLab), streamlining deployments and development workflows. Worked extensively with AWS and Docker, supporting scalable infrastructure and efficient delivery processes.

Mobile Application Developer / Unity Developer at Design Forge Ltd

February 1, 2023 - November 1, 2023

Architected MMORPG game's systems including: world's grid, path-finding, mining, crafting, travels, multiplayer, inventory system, NPC interactions and many more. Worked on the API/back-end for the game using Laravel 10, MySQL, Redis and NodeJS for WebSocket communication. Worked on the front-end for the above in Angular 15, Ionic and Capacitor. Re-written the front-end for the above using Unity game engine / C#. As side project, created a habit-tracking Android/iOS app in React/Ionic/Capacitor and PHP/Laravel/MySQL.

Lead Developer / Scrum Master / DevOps Engineer at Ludic Group

October 1, 2019 - February 1, 2023

Led SmartLab, a SaaS product serving global companies. Guided large-scale replatforming from CodeIgniter 3 to Laravel and VueJS. Supervised mobile app development with Angular and Ionic. Collaborated with PMs to ensure timely feature delivery, implemented Scrum methodology, mentored juniors, conducted code reviews, and created DevOps tooling and bash scripts for easy SmartLab instance updates.

Senior Full Stack Web Developer at Ludic Group

May 1, 2016 - October 1, 2019

Built graphical representations and CSV exports for statistics, developed a Learning Content Builder with ReactJS, and architected a robust Laravel-based platform for a major banking client. Led project work and contributed to task management enhancements.

Full Stack Web Developer / SysAdmin at Design Forge

March 1, 2014 - May 1, 2016

Created ximbo.land fashion game/community site using Yii, managed AWS servers (later migrated to Proxmox), and leveraged Redis caching. Collaborated with London-based agencies to build complex applications using Laravel 5, Yii2 and WordPress.

Senior Web Developer at OnBuy.com

January 1, 2013 - March 1, 2014

Built and scaled product ingestion systems for a large e-commerce marketplace, handling millions of products from tens of thousands of sellers. Developed backend logic and tools for data normalization, synchronization, and high-availability performance. Contributed to core platform architecture for marketplace growth.

Senior / Lead Web Developer at CD-WEB

March 1, 2012 - December 1, 2012

Created an 'ask a lawyer' portal for onet.pl, implemented SEO tooling with Yii, and developed a CRM system for a sewage company, including a C# importer from Oracle. Mentored juniors and acted as project manager for CMS-based projects.

Web Developer at CD-WEB

June 1, 2009 - February 1, 2012

Delivered numerous e-commerce solutions, web portals, and CMS-based sites. Enhanced legacy CMS systems and contributed to game-related projects.

Web Developer at Freelancer

October 1, 2006 - October 1, 2009

Worked on various projects, improving existing features and optimizing PHP/MySQL applications, including a notable MMORPG game and gowork.pl optimization.

Senior Backend Engineer – AI & Data Systems at CompareIT

September 1, 2025 - April 1, 2026

Designed and developed core backend systems for an MSP discovery SaaS platform using Laravel, including advanced search, filtering, and data-driven matching. Implemented scalable API architecture and modular microservices to support a React frontend with dynamic dashboards, AI-assisted workflows, and real-time interactions. Integrated third-party data sources and built data ingestion pipelines for automated enrichment and updates. Built an AI-driven matching system translating natural language queries into structured filters and ranking logic. Collaborated with frontend, PM, and clients to refine scope and ensure scalability.

Web Developer – Freelancer

October 1, 2006 - October 1, 2009

Added new features, improved existing functionality, and optimized a job board site gowork.pl; built sites with WordPress and Joomla; developed an MMORPG game.

Full Stack Web Developer / SysAdmin at Design For ge

March 1, 2014 - May 1, 2016

Created ximbo.land fashion game/community site in Yii, managed AWS servers (later migrated to Proxmox), used Redis for caching; built complex web apps for clients in Laravel, Yii2 and WordPress.