Mateusz Kimont - Principal Full-Stack Engineer

Mateusz Kimont

Principal Full-Stack Engineer

Status: Open for new remote opportunities 2026

Status: Open for new remote opportunities 2026 Download CV

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

Key Achievements

High-Volume Payment Integration:

Developed and integrated cross-platform payment wrappers responsible for processing over 40 million transactions annually.

High-Volume Self-Service Integration:

Architected and developed a high-impact React self-service application for a major US e-commerce platform.

Enterprise Modernization:

Streamlined business operations for two major international companies by resolving critical technical debt.

Customer Portal Architecture:

Built a customer insurance portal for The Insurance Emporium, utilizing a JavaScript framework and JSON API.

Full-Stack Performance Overhaul:

Drove a 2x performance (or more) 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.

Custom Headless Testing Automation Server:

Designed and deployed a fully automated, headless testing environment using Linux, Ansible (IaC) and Webdriver.io, seamlessly integrated into a Jenkins CI/CD pipeline.

Senior-Level Experience (10+ years)

Fullstack Engineer @ Wine.com

2025 - 2026 (6 months)

Architected and developed a high-impact React self-service application. Engineered the seamless integration of the modern React application into a complex, large-scale legacy Backbone.js e-commerce system.

Principal Engineer @ CMO Group

2024 - 2025 (7 months)

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.

Product Engineer @ Charlesworth Press

2021 - 2024 (3 years)

Spearheaded the development of a versatile CMS platform enabling personalized product creation for e-commerce clients, more here.

Software Developer & Analyst (Contract) @ RLDatix

2020 (4 months)

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

Senior Full-Stack Developer @ The Insurance Emporium

2016 - 2020 (4 years)

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.

Mid-Junior Developer (2+ years)

Mid-Junior Developer (2+ years)

2014 - 2016 (2 years)

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

View selected projects

Drilldown & Technical Skills

Awards & Education

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