Mateusz Kimont - Principal Full-Stack Engineer

Mateusz Kimont

Principal Full-Stack Engineer

Status: Open for new remote opportunities - July 2025

"Be careful of extrapolating patterns without proof" - Grant Sanderson

Key Achievements

  • Full-Stack Performance Overhaul: Drove a 2x performance increase in production sites by leading a full-stack overhaul that included upgrading to PHP 8.3, redesigning the AWS architecture, and optimizing APIs and databases.
  • Bespoke CMS Development: Independently engineered a robust CMS from the ground up, featuring over 125 configurations for personalized product creation. View Demos.
  • Enterprise Modernization: Streamlined business operations for two major international companies by resolving critical technical debt, focusing on code quality, Agile process optimization, and documentation enhancements.
  • High-Volume Payment Integration: Developed and integrated cross-platform payment wrappers responsible for processing over 40 million transactions annually using Composer and modern PHP architecture.
  • Customer Portal Architecture: Built a comprehensive customer insurance portal for The Insurance Emporium, utilizing a JavaScript framework and JSON API to streamline customer interactions.
  • Headless Testing Automation: Designed and deployed a fully automated, headless testing environment using Ansible (IaC) and Webdriver.io, seamlessly integrated into a Jenkins CI/CD pipeline.

Senior-Level Experience (8+ years)

2024 - 2025 (7 months)

Principal Engineer

At CMO Group I drove a 2x performance increase in production sites by leading a full-stack overhaul that included upgrading to PHP 8.3, redesigning the AWS architecture, and optimizing APIs and databases.

2021 - 2024 (3 years)

Product Engineer

At CharlessWorh Press I spearheaded the development of a versatile CMS platform enabling personalized product creation for e-commerce clients, more here.

2020 (4 months)

Software Developer & Analyst (Contract)

At RLDatix I enhanced mission-critical healthcare software for a leading international provider with operations in Saudi Arabia, Canada, Australia, and the UK.

2016 - 2020 (4 years)

Senior Full-Stack Developer

At The Insurance Emporium I led full-stack development for a major UK insurance company, contributing to the launch of a new company brand and the strategic retirement of legacy products.

Digital Agency Experience (2+ years)

Delivered pixel-perfect websites and solutions for a diverse client portfolio while at top digital agencies.

Grapple | We are Marvellous | Xanda

Selected Client Projects:

Drilldown & Technical Skills

Frontend Skills | PHP Skills | DevOps | Day-to-day Responsibilities | Soft Skills

Awards & Education

Awards & Certifications

University Studies

Pursued 3.5 years of full-time higher education across diverse faculties including Philosophy, Computer Science, and Fine Arts, providing a unique foundation for creative problem-solving.

Contact & Social Profiles

Email: admin@yorkman.co.uk

CV: Download PDF

Profiles: LinkedIn | GitHub | StackOverflow | X (Twitter)