Pawel Owerczuk
AI Agent Shopping Assistant
Erfahrungen
AI 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
Fullstack Developer — Contractor
Fortum
Developed a comprehensive B2B platform aimed at managing electric vehicle (EV) fleets and overseeing charging sessions and payment processes. This platform facilitates seamless control over multiple aspects of EV fleet operations, ensuring efficiency and ease of use for businesses.
- Next.js + Typescript
- GraphQL
- Node.js + Express, PostgreSQL
- Unit tests — react-testing-library + E2E — Playwright
- HTML + CSS / Tailwind
- Shared Components + Storybook
Frontend Developer — Contractor
Nexum / Manor.ch
New e-commerce platform for one of the biggest online shops in Switzerland. Supporting Frontend with a strong focus on SEO and performance of the application.
- 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
Frontend Developer — Contractor
Valtech / Cartier
A special event and product page prepared for jewellery manufacturer Cartier. Close collaboration with UX / UI team and business managers. Short deadline and pixel perfect design.
- Next.js + Typescript
- Storyblok headless CMS integration - Components Library
- Multi Language support
- HTML + Tailwind + Storybook
- Git flow + Scrum
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
Frontend Developer — Contractor
Fides Treasury / Credit Suisse
Working on a set of fintech applications dedicated to the banking industry. Helped to design and organize a shared components' library, implement 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)
Frontend Developer — Contractor
UBS
E-banking client application used by private clients across the whole world. Micro — frontends architecture, supported with SPA applications and multilevel components concept:
- React + Typescript
- Redux + migration to the 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
Frontend Developer — Contractor
Hyundai
Car configuration application for Hyundai car manufacturer. 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
Fullstack Developer — Contractor
PwC Switzerland
Greenfield e-commerce project focused on digital products. Designed to meet multi-tenancy architecture in order to sell the application to the other PwC territories on a SaaS model.
- 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
Frontend Developer — Contractor
Oqio.de
Working on a client side application for the members of the property insurance process. Oqio is designed to help with reporting damages, decrease the time of solving claim reports and improve the quality of the building insurance market.
- React + JavaScript
- Creating 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
Frontend Developer — Contractor
Conrad.de
I was a part of the Sales Analytics Tools team in the CRM project for Conrad.de. Our CRM application allows users to search for the customers using multiple filtering options, create contact reports, edit customer data and analyse various KPIs presented on the charts.
- Creating CRM application from scratch in React + Redux
- HTML + CSS (CSS Modules) + Semantic UI
- Creating a library of the React components shared between multiple internal teams
- Data visualization — D3.js (Integration between D3.js and Tableau — Custom Extensions)
- Multi language support
- Unit tests (Jest + Enzyme)
- End-to-End tests (Chrome Headless + Puppeteer)
- Git Flow + Scrum
- Frontend & Backend Microservices — Kubernetes
Frontend Developer
daftcode.com
Working on a kanban-like task management application with data visualization tools.
- Creating application using Vue.js + Vuex
- HTML + CSS (SCSS)
- Notifications based on the webstockets communication
- Node.js + Express
- Data visualization — Chart.js
- Multi language support
- Unit tests (Jest + Enzyme)
- End-to-End tests (Selenium + Nightwatch)
- Git Flow + Scrum
Frontend Developer
E.ON
Website relaunch project in Adobe Experience Manager environment. I was implementing various components in pure JavaScript, jQuery, and React for the multiple child companies of EON for e.g. Bayernwerk and Avacon.
- AEM & React ecosystem
- HTML + CSS (LESS) / JS (vanilla JS & jQuery) components
- creating 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
Frontend Developer
Syncano.com
Syncano is a Backend as a Service development platform for building more, faster, by leveraging existing backend code.
- Syncano Dashboard was the biggest open source project based on Material-UI
- React + Reflux
- HTML + CSS + Material-UI
Frontend Developer
Redingo
Redingo is a software house company working for various clients from the UK and Germany.
- Working on a Medical Management System application
- Creating new features in Backbone.js
- HTML + LESS
Civil Engineer
I used to work as a Civil Engineer on a construction site. Working on big infrastructure projects — Warsaw Underground Line — part 2.
- managing a team (up to 30 people)
- controlling of quality, quantity, and project schedule
Zusammenfassung
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.
Sprachen
Ausbildung
Warsaw University of Life Sciences
Civil Engineering · Warschau, Polen
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