Available for new challenges

Michał
Zagalski

10+ years building high-performance web applications. Achieved PageSpeed 100 on a real-time SSR application deployed on Cloudflare Workers. Deep expertise in edge computing, AI integration, Web3/blockchain, and open-source.

zagalski@protonmail.com

Performance

100/100

PageSpeed Score

Experience

10+ Yrs

Full-Stack Dev

Location

Warsaw

Poland / Remote

Work Experience

01 // PROFESSIONAL JOURNEY

Freelance Software Developer

Senior Full-Stack Developer

May 2019 - Present

Warsaw, Poland

  • DexPaprika: Migrated real-time DEX explorer from Vue 3 to Nuxt 4 SSR on Cloudflare Workers. Led 8-phase PageSpeed optimization achieving Desktop 100/100, Mobile 95.6, CLS 0.000.
  • CoinPaprika: Architecting Next.js 15+ migration using Turbo monorepo with modular packages, deployed on Cloudflare Workers via OpenNext.
  • GetName.pl: Built Nuxt 4 premium .pl domain marketplace with Web3 layer (Solidity, SIWE, MetaMask) and AI domain assistant.
  • sklep-internet.pl (DOMAR): Migrated legacy PHP e-commerce to Next.js 16 with React 19, PostgreSQL, Drizzle ORM, and full-text search.
  • LeoKlima.pl: Migrated HVAC site to Next.js 15 + PayloadCMS on Cloudflare D1 with automated lead generation.
  • Veterinary Management System: Next.js 15 clinic management app with Stripe payments and Recharts analytics.
Next.js 15+Nuxt 4Cloudflare WorkersWeb3Performance

Levitated.pl

Software Developer

2017 - 2019

Remote

  • Developed PHP REST API for property geolocation.
  • Managed CraftCMS websites and built a Django platform for personal trainers with Stripe payments.
PHPDjangoStripeCraftCMS

Polcode

Software Developer

2016 - 2017

Warsaw, Poland

  • Built a Yii2 coupon generation app and an Angular + Laravel volleyball coaching toolkit.
  • Handled e-commerce bug fixes for legacy Laravel/jQuery applications.
LaravelAngularYii2jQuery

Akademia Nauki

Software Developer

2015 - 2016

Warsaw, Poland

  • Developed a Laravel mailing system for newsletter campaigns.
  • Managed Moodle e-learning platforms.
LaravelMoodlePHP

Technical Arsenal

02 // SKILLS & TOOLS

Languages

TypeScriptGoRustPythonPHPJava

Frontend

ReactNext.js 15+Vue 3Nuxt 4Tailwind CSS v4

Backend

Node.jsGoLaravelFastAPIDrizzle ORM

Edge & Cloud

Cloudflare WorkersD1/R2AWSDocker

Publications

03 // TECHNICAL WRITING

2023

The Road to PageSpeed 100 — Part 1: Foundation & Server-Side Wins

Exploring fundamental architectural changes (85→90) required for perfect performance.

Medium / CoinPaprika

2023

The Road to PageSpeed 100 — Part 2: Critical Rendering & CLS Battle

Deep dive into layout shifts and critical CSS injection (90→97).

Medium / CoinPaprika

2024

The Final Push: How We Hit PageSpeed 100 on a Real-Time Data Application

Final optimizations to reach the 100/100 milestone.

Medium / CoinPaprika

Open Source

04 // COMMUNITY CONTRIBUTIONS

nask-epp-client

Node.js client for NASK EPP (.pl domain management)

browser-curl

Shell tool for bypassing WAF 403s with Chrome headers

parallel-requests

Claude Code skill: refactor sequential HTTP calls to parallel

Conferences

05 // CONTINUOUS LEARNING

NuxtNation 2022 & 2024
Vue.js Nation 2023 & 2025
ViteConf 2024
Vue.js DE 2024

Interests

06 // BEYOND THE CODE

AI/LLM development
Web3 & blockchain
Open-source
Performance engineering
Sailing

Let's build something fast.

Currently open to senior roles, performance consulting, and high-stakes engineering projects.

Get in touch

© 2026 MICHAŁ ZAGALSKI

BUILT WITH REACT + EXPRESS + TAILWIND V4

WARSAW, PL // 52.2297° N, 21.0122° E