Pawel Owerczuk
AI AGENT Shopping assistant
Experience
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.
- 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
- 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
Frontend 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
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
- 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)
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
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
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
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
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
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
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
Frontend Developer
Syncano.com
- Worked on Syncano Dashboard, the biggest open source project based on Material-UI.
- React + Reflux
- HTML + CSS + Material-UI
Frontend Developer
Redingo
- Developed a medical management system application and created new features in Backbone.js.
- HTML + LESS
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
Industries Experience
See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.
Experienced in Construction (6 years), Information Technology (4.5 years), Utilities (2.5 years), Retail (2 years), Banking and Finance (2 years), and Manufacturing (1.5 years).
Business Areas Experience
The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.
Experienced in Information Technology (9.5 years), Product Development (8 years), Project Management (6 years), Quality Assurance (6 years), Business Intelligence (1.5 years), and Marketing (0.5 years).
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
Education
Warsaw University of Life Sciences
Master · Civil Engineering · Warsaw, Poland
Profile
Frequently asked questions
Do you have questions? Here you can find further information.
Where is Pawel based?
What languages does Pawel speak?
How many years of experience does Pawel have?
What roles would Pawel be best suited for?
What is Pawel's latest experience?
What companies has Pawel worked for in recent years?
Which industries is Pawel most experienced in?
Which business areas is Pawel most experienced in?
Which industries has Pawel worked in recently?
Which business areas has Pawel worked in recently?
What is Pawel's education?
What is the availability of Pawel?
What is the rate of Pawel?
How to hire Pawel?
Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
Similar Freelancers
Discover other experts with similar qualifications and experience
Experts recently working on similar projects
Freelancers with hands-on experience in comparable project as a AI AGENT Shopping assistant
Nearby freelancers
Professionals working in or nearby Żółwin, Poland