L O A D I N G

sachem.dev

Hi there! 👋

Senior Full-Stack Developer

Hi, I’m Karol, a seasoned full-stack software engineer and a lifelong lover of mathematics. My programming journey began over 30 years ago, during the golden age of 8-bit computers. After breaking one too many joysticks on my Commodore 64, my mum declared, "Enough!" With no joystick left and no keyboard-controlled games in sight, I turned to coding—and I’ve been hooked ever since.

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I’M Karol Padiasek_

I’m Karol Padiasek

Pragmatic Programmer

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Hello! I’m Karol a programmer at heart with nearly 20 years of professional experience.

I love solving complex problem by breaking them into managable pieces. I am a huge fan of testing, automating everything, and good documentation. My greatest strength, however, lies in my ability to quickly understand new systems and hit the ground running. Outside of coding, I enjoy spending time with my family, climbing, and experimenting with music.

Name

Karol Padiasek

Based

Forres, UK

Phone

+(44) 777 014 5383

Experience

18+ years

Contract

Available

Language

English, Polish

Turning Ideas into Robust Computer Systems that Endure and Perform

I specialize in designing and building sophisticated computer systems that are not only reliable but also scalable and future-proof. By combining innovative ideas with meticulous attention to detail, I deliver solutions that perform seamlessly, adapt to evolving needs, and stand the test of time. Whether it's creating from scratch or optimizing existing systems, my focus is always on transforming challenges into enduring, high-performing results.

web

Web Development

With extensive experience in PHP frameworks like Laravel, Yii, and CodeIgniter, as well as Python/Django and WordPress, I create dynamic and secure web applications tailored to user needs. My frontend expertise spans modern JavaScript frameworks such as React, Angular, and Vue, alongside jQuery, HTML5, and CSS3, ensuring visually engaging and responsive designs.

servers

Server Administration & Cloud

From Linux server configuration to managing Apache, NGINX, AWS environments, and Proxmox virtualization, I ensure server environments are secure, scalable, and efficient. My expertise spans everything from initial setup to long-term maintenance and optimization.

dev-ops

Dev-Ops Engineering

I streamline development and deployment pipelines with tools like GitLab CI/CD and Docker, automating repetitive tasks through Bash scripting. My focus is on creating efficient, reliable workflows that enhance collaboration and bring projects from development to production seamlessly.

databases

Database Design & Optimization

An expert in both relational and NoSQL databases, I design, optimize, and maintain efficient database structures. With advanced skills in MySQL and PostgreSQL, combined with a deep understanding of NoSQL systems like Redis, I ensure data is handled securely, efficiently, and with performance in mind

game-dev

Game Development

I bring engaging gaming experiences to life, specializing in Unity for immersive 2D and 3D games and web-based game development. Whether it's creating gameplay mechanics or optimizing performance, I focus on delivering interactive and polished projects for a wide audience.

Featured Projects

Throughout my career, I have worked on a wide range of projects, both as a permanent team member and a contractor. Unfortunately, due to non-disclosure agreements, I cannot share specific details about most of them. For this reason, this section highlights primarily my personal projects, showcasing my skills, creativity, and dedication to continuous learning.


Top Skills

My Tech and Tools


PHP

Laravel

Yii

Linux

MySQL

Redis

Docker

CodeIgniter

JavaScript

HTML5

CSS3

TypeScript

ReactJS

Angular

VueJS

Wordpress

AWS

Git

GitLab

nginx

Apache

Golang

Python

Django

Unity

C#

Android

PostgreSQL

NPM

Composer

Postman

GitHub

Education

Master in Mathematics

Adam Mickiewicz University / 1999 - 2004

Master Thesis: The Use of Finite Fields in Cryptography

Bachelor in Computer Science

Adam Mickiewicz University / 2004 - 2007

Bachelor Thesis: Using PHP to Communicate with Databases

Experience

Senior Full-Stack Developer

Contractor / 2023 - present

During this time, I worked on a variety of web projects, mobile apps, and games, with a primary focus on my Unity game Dragon Lords. In addition to game development using C# and Unity, I contributed as a contractor for Miura, providing expertise in their Yii2 website and optimizing their GitLab CI/CD pipeline. My tech stack included Linux, AWS, Docker, PHP (Laravel & Yii), C# (Unity), Python (Django), Go, Angular, ReactJS, MySQL, Redis, and GitLab CI/CD.

LEAD DEV and SCRUM MASTER

Ludic Group / 2019 - 2023

Worked on SmartLab Services, a suite of SaaS products serving global companies. Successfully implemented Scrum methodology within the development team, overseeing sprint planning and execution. As Lead Developer, I managed the transition and rebuild of a monolithic CodeIgniter 3 application into a modern tech stack using Laravel and ReactJS with Angular used for the mobile app.

Senior Full-Stack Developer

Ludic Group / 2016 - 2019

Key collaborator for SmartLab, contributing to its success through innovative web development. Led multiple web projects for prominent clients in the banking and pharmaceutical sectors, delivering secure and scalable solutions. Worked predominantly with PHP, CodeIgniter 3, Laravel 5, MySQL, and the standard front-end stack (HTML, CSS, JavaScript).

Senior Full-Stack Developer

Contractor / 2014 - 2016

Worked on a variety of web projects, mobile apps, and games, using a tech stack that included Linux, AWS, PHP (Laravel & Yii), MySQL, Redis, HTML, CSS, JavaScript, jQuery, and WordPress. During this time, I laid the groundwork for Ximbo.land, including setting up the AWS server, designing the database, and developing the entire back-end using Yii. This foundational work ensured a solid infrastructure for the project's future development.

Senior Web Developer

OnBuy.com / 2013 - 2014

As a senior member of the development team, I played a key role in building OnBuy.com, an online marketplace. My main responsibility was to create the logic and front-end tools to facilitate seamless product data import from external sellers, ensuring smooth integration with the platform. I also worked closely with other team members to enhance the platform's functionality and performance. In addition to my technical contributions, I mentored junior developers, offering guidance and support while promoting best practices within the team.

Senior / Lead Web Developer

CD-WEB / 2012 - 2013

As a senior developer, I led the creation of complex web solutions, integrating payment systems and enhancing SEO tools. I developed bespoke CRM systems, improved business processes, and mentored junior developers to uphold best practices. Additionally, I managed projects and ensured successful delivery of CMS-based web solutions.

Web Developer

CD-WEB / 2009 - 2012

Over three years, I worked on diverse web projects, including e-commerce platforms, portals, and CRM systems, while enhancing the company’s CMS to meet evolving needs. I contributed to integrating external systems, optimizing performance, and delivering tailored business solutions. Additionally, I mentored colleagues and managed projects to ensure smooth delivery.

Web Developer

Contractor / 2006 - 2009

Although I had plenty of experience as a programmer from my university studies and personal projects, this role marked my first steps as a full-stack Web Developer. During this time I created websites using WordPress and Joomla as well as worked with legacy code. One of my notable personal projects during this time was the development of an MMORPG, www.smoczyjezdzcy.pl.