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Jakub Kroc
frontend developer
That's me! About me
Frontend Developer with 4+ years of commercial experience, specializing in the Vue.js ecosystem and TypeScript, with working knowledge of React and Next.js. Experienced in building scalable, responsive web applications — from architecture decisions to performance optimization and REST API integration. Known for high attention to code quality, developer experience, and end-user performance across complex, high-traffic products.
Experience
Computer Science EngineerLublin University of TechnologyOctober 2018 - February 2022
Frontend DeveloperIdeo sp. z.o.oMay 2022 - Current
- Architected and delivered frontend solutions across multiple project types — from MVPs to large-scale web applications — using Vue.js (Vue 2/3), Nuxt.js, and TypeScript, taking full ownership of technical decisions from discovery to deployment.
- Designed and enforced scalable frontend architecture standards including folder structure conventions, state management patterns (Vuex → Pinia), and component design systems adopted across the entire development team.
- Led migration of legacy Vue 2 codebases to Vue 3 with Composition API, reducing technical debt and improving long - term maintainability across multiple production projects.
- Optimized frontend performance through code splitting, lazy loading, and targeted SEO improvements — achieving measurably faster load times and improved Lighthouse scores.
- Drove REST API integration strategy in close collaboration with backend teams, defining contract-first approaches and shared data models to ensure scalable frontend-backend communication.
- Mentored junior and mid-level developers through code reviews, pair programming sessions, and internal knowledge-sharing initiatives, contributing to measurable team growth.
- Maintained high code quality standards via structured code review processes, proactive cross-browser and regression testing, and debugging complex production issues.
Tech stack
Basics
- HTML
- CSS
- JavaScript
- TypeScript
- jQuery
- Tailwind CSS
Frameworks
- Vue.js (Vue2/Vue3)
- Nuxt.js
- Vuex
- Pinia
- Vuetify
- React
- Next.js
- Astro.js
- Shadcn/ui
- Bootstrap
Backend
- Express.js
- NestJS
- PHP
- Laravel
- MySQL
- PostgreSQL
- SQLite
- Prisma
Testing
- Jest
- Vitest
- Unit Testing
- Axios
- FormKit
- Joi.dev
Tools
- Git
- Webpack
- Vite
- CI/CD
- GitHub Actions
- Docker
4+ years building production-grade web applications, with deep expertise in the Vue.js ecosystem and a strong command of the broader JavaScript landscape — from frontend architecture to backend integrations.
Projects
A selection of personal and side projects built to explore new technologies, solve real problems, and sharpen skills beyond the day-to-day. Each project includes a live demo and a GitHub repository.
Portofilio
1
My latest project - my fresh portfolio. I created it with ASTRO.JS, GLIDE.JS and AOS.
Vue dashboard
2
This app simulates simple dashboard for your daily duties. You can add notes, reminds, expenses, tasks or expenses. I created it with VUE3 composition api, PINIA, VUETIFY and AXIOS at front. I used EXPRESS.JS, JOI.DEV, PRISMA.ORM and MYSQL for my API.
Fitapp
3
This app allow you to monitor your daily nutritional values. I made it with NUXT2, VUETIFY and AXIOS at front and EXPRESS.JS to create API and connect it to MYSQL database.
Frontend challanges
4
This project contains some of frontend mini challanges. I made challanges in vanilla Javascript.
Old portfolio
5
This is my first portfolio project. I created it with VUE3 composition api and ANIMEJS.
Smart Home Interface
6
This app simulate, interface of smart home. Made with VUE2, Interact.js and a little bit of TypeScript
To do app v2
7
So that was my first app, which I made in VUE2. This is version 2, rebuilded specially for my first EXPRESS.JS app.
Calendar app
9
This app, simulates calendar where you can add tasks, to every day you want. I created it with VUE2, without any calendar libraries.
NBA stats
10
This app allow you to check historical stats from nba games or single player stats. I created it with VUE2 and free basketball api
Money Converter
11
This app allows you to convert currencies. I created it with VUE2 and free data currency api.
TAI project
14
This is a project for one of my study subjects. I made it with PHP, HTML and CSS
landing pages
15
This repo contains projects of landing pages, which I made, when I was learning HTML and CSS
Contact