Pawel Owerczuk
AI AGENT Shopping assistant
Experience
Dec 2024 - Present
1 year 2 monthsAI AGENT Shopping assistant
Side project
- Designed and built a web-based tool to assist users in selecting home appliances and electronics based on personalized needs.
- Developed intuitive interfaces and recommendation features using React, ensuring a user-friendly experience.
- Integrated APIs and product databases to provide real-time comparisons and insights.
- Focused on performance, accessibility, and responsive design to cater to a broad audience.
- React + Typescript + Tailwind
- Open AI API + Langfuse (Prompt management)
- Bun + PostgresSQL
- Algolia
- Selenium
- Github Actions
Jan 2024 - Present
2 years 1 monthStockholm, Sweden
Fullstack Developer — Contractor
Fortum
- Developed a comprehensive B2B platform aimed at managing electric vehicle (EV) fleets and overseeing charging sessions and payment processes.
- Next.js + Typescript
- GraphQL
- Node.js + Express, PostgreSQL
- Unit tests — react-testing-library + E2E — Playwright
- HTML + CSS / Tailwind
- Shared Components + Storybook
Dec 2022 - Mar 2022
-1 years -8 monthsFrontend Developer — Contractor
Nexum
- Developed a new e-commerce platform for one of the biggest online shops in Switzerland focusing on SEO and performance.
- Next.js
- Typescript
- Apollo + GraphQL
- React-query
- Lit Components + Svelte (Amplience CMS plugins)
- Amplience headless CMS integration
- Algolia — search engine
- Unit tests — react-testing-library
- HTML + CSS in JS — Styled Components
- I18n Multi language support
- Git flow + Scrum — Storybook
Mar 2022 - Aug 2022
6 monthsFrontend Developer — Contractor
Valtech
- Created a special event and product page for jewellery manufacturer Cartier with pixel-perfect design under a short deadline.
- Collaborated closely with UX/UI team and business managers.
- Next.js + Typescript
- Storyblok headless CMS integration - Components Library
- Multi language support
- HTML + Tailwind + Storybook
- Git flow + Scrum
Jan 2022 - Jun 2023
1 year 6 monthsMunich, Germany
Frontend Developer — Contractor
B/S/H
- Developed and maintained a cutting-edge design system to streamline UI/UX consistency across multiple web applications.
- Collaborated with cross-functional teams to implement reusable React components, ensuring scalability and adherence to modern design standards.
- Optimized performance and accessibility, resulting in a seamless user experience.
- Played a key role in integrating new design tools and workflows for improved efficiency.
- React + Typescript
- Figma + Design / Composition tokens
- Unit tests — react-testing-library
- E2E Tests (Regression tests) Playwright
- HTML + CSS in JS — Emotion
- Design System + Storybook
May 2021 - Dec 2022
1 year 8 monthsZürich, Switzerland
Frontend Developer — Contractor
Fides Treasury / Credit Suisse
- Worked on a set of fintech applications dedicated to the banking industry.
- Designed and organized a shared components library and implemented contribution and maintenance rules.
- React + Typescript
- Context API
- AG-Grid — multiple use cases, custom configuration
- Unit tests — react-testing-library
- HTML + CSS in JS — Styled Components
- Multi language support
- Git flow + Scrum (SAFe)
- Design System (Shared components + Storybook)
Dec 2020 - May 2021
6 monthsZürich, Switzerland
Frontend Developer — Contractor
UBS
- Developed an e-banking client application for private clients worldwide using micro-frontends architecture.
- Migrated state management from Redux to Context API.
- Assets View Section — AG Grid
- Unit tests — react-testing-library
- HTML + CSS in JS — CssModules
- I18n Multi language support
- Git flow + Scrum (SAFe)
- Shared components + Storybook
Nov 2020 - Dec 2020
2 monthsBerlin, Germany
Frontend Developer — Contractor
Hyundai
- Built a car configuration application for Hyundai with multi-tenant architecture.
- React + Typescript
- Redux + RxJS, GraphQL
- HTML + CSS in JS — Styled Components
- Multi language support
- Git flow + Scrum
- CI/CD Pipeline
- Docker / Kubernetes
- Storybook
Mar 2020 - Sep 2020
7 monthsZürich, Switzerland
Fullstack Developer — Contractor
PwC Switzerland
- Developed a greenfield e-commerce project focused on digital products with multi-tenancy SaaS architecture.
- Next.js + Typescript
- PHP + Symphony (Spryker E-commerce CRM)
- HTML + CSS in JS — Styled Components
- Multi language support
- Unit tests — react-testing-library
- End-to-End tests — Cypress
- Git flow + Scrum
- CI/CD Pipeline
- Docker / Kubernetes
Apr 2019 - Feb 2020
11 monthsMunich, Germany
Frontend Developer — Contractor
Oqio.de
- Developed a client-side application for property insurance process to report damages and improve claim resolution time.
- Created Oqio Analytics dashboard from scratch in React + Redux (Saga) + Flow.
- HTML + CSS in JS — Styled Components + AntDesign
- Dynamically generated forms + Data visualization — D3.js
- Unit tests (Jest + Enzyme) + End-to-End tests (Selenium + Nightwatch)
- Git Flow + Scrum, Jenkins + AWS integration
Jun 2018 - Apr 2019
11 monthsNuremberg, Germany
Frontend Developer — Contractor
Conrad.de
- Developed a CRM application for sales analytics tools to search customers, create contact reports, edit data, and analyse KPIs.
- Created library of React components shared between multiple internal teams.
- HTML + CSS (CSS Modules) + Semantic UI
- Data visualization — D3.js (Integration with Tableau custom extensions)
- Multi language support
- Unit tests (Jest + Enzyme)
- End-to-End tests (Chrome Headless + Puppeteer)
- Git Flow + Scrum
- Frontend & Backend Microservices — Kubernetes
Oct 2017 - May 2018
8 monthsWarsaw, Poland
Frontend Developer
daftcode.com
- Built a kanban-like task management application with data visualization tools.
- Vue.js + Vuex
- HTML + CSS (SCSS)
- Notifications via WebSockets
- Node.js + Express
- Data visualization — Chart.js
- Multi language support
- Unit tests (Jest + Enzyme)
- End-to-End tests (Selenium + Nightwatch)
- Git Flow + Scrum
Mar 2017 - Sep 2017
7 monthsHamburg, Germany
Frontend Developer
E.ON
- Implemented components in Adobe Experience Manager environment for multiple child companies including Bayernwerk and Avacon.
- AEM & React ecosystem
- HTML + CSS (LESS) / JS (vanilla JS & jQuery) components
- Complex React + Redux + Flow components
- Company identity based components (React, Native JS + CSS)
- Unit tests (Jest + Enzyme) + End-to-end tests (Selenium + Nightwatch)
- Multi language support + Git flow + Scrum
Mar 2016 - Sep 2017
1 year 7 monthsWarsaw, Poland
Frontend Developer
Syncano.com
- Worked on Syncano Dashboard, the biggest open source project based on Material-UI.
- React + Reflux
- HTML + CSS + Material-UI
Oct 2015 - Feb 2016
5 monthsWarsaw, Poland
Frontend Developer
Redingo
- Developed a medical management system application and created new features in Backbone.js.
- HTML + LESS
Jan 2011 - Dec 2016
6 yearsWarsaw, Poland
Civil Engineer
Civil Engineer career
- Managed a team of up to 30 people on large infrastructure projects including Warsaw Underground Line part 2.
- Controlled quality, quantity, and project schedule
Summary
With over 9 years of professional experience, including more than 8.5 years specializing in React and Next.js, I have played a pivotal role in major digital transformation projects for renowned organizations such as UBS, EON, B/S/H, Conrad.de, and PwC, while also contributing to the growth of innovative startups. My journey in the ever-evolving tech landscape has shaped me into an open-minded, creative professional who thrives both independently and in collaborative team settings.
Passionate about cutting-edge technologies, I have recently developed a strong interest in AI and its applications in enhancing user experiences and optimizing digital solutions. Eager to embrace responsibility and committed to delivering high-quality software, I am ready to tackle challenging projects and drive impactful results.
Skills
Web Development
- React, Nextjs, Context Api, Redux
- Vue.js, Angular
- Typescript / Javascript
- Css In Js — Emotion, Styled Components, Css Modules, Tailwind
- D3.js, Recharts
- Building Shared Components Libraries (Storybook + Lerna + Articatory)
- Design Tokens + Composition Tokens
- Rest Api, Graphql, Websockets
- Ui Frameworks: Semantic Ui, Ant Design, Material-ui
- Aem Foundations
- Php + Symphony — Foundations
- Node / Bun
- Java + Spring Boot — Intermediate
- Jenkins, Gitlab Pipelines
- Docker, Kubernetes
- Microservices Architecture (Also Micro — Microfrontends)
Mobile
- React Native — Side Project
Testing
- Tdd
- Unit Tests — React-testing-library, Enzyme
- E2e — Codeceptjs, Selenium + Nightwatch / Chrome Headless + Puppeteer / Cypress
Work Methodologies
- Scrum, Including Safe
- Kanban
Languages
Polish
NativeEnglish
AdvancedGerman
IntermediateEducation
Oct 2007 - Jun 2012
Warsaw University of Life Sciences
Master · Civil Engineering · Warsaw, Poland
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