Recommended expert

Pawel Owerczuk

AI AGENT Shopping assistant

Pawel Owerczuk
Żółwin, Poland

Experience

Dec 2024 - Present
1 year 3 months

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
Jan 2024 - Present
2 years 2 months
Stockholm, 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 months

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
Mar 2022 - Aug 2022
6 months

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
Jan 2022 - Jun 2023
1 year 6 months
Munich, 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 months
Zürich, 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 months
Zürich, 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 months
Berlin, 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 months
Zürich, 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 months
Munich, 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 months
Nuremberg, 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 months
Warsaw, 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 months
Hamburg, 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 months
Warsaw, 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 months
Warsaw, Poland

Frontend Developer

Redingo

  • Developed a medical management system application and created new features in Backbone.js.
  • HTML + LESS
Jan 2011 - Dec 2016
6 years
Warsaw, 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

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).

Construction
Information Technology
Utilities
Retail
Banking and Finance
Manufacturing

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).

Information Technology
Product Development
Project Management
Quality Assurance
Business Intelligence
Marketing

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
Native
English
Advanced
German
Intermediate

Education

Oct 2007 - Jun 2012

Warsaw University of Life Sciences

Master · Civil Engineering · Warsaw, Poland

Profile

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Pawel based?

Pawel is based in Żółwin, Poland.

What languages does Pawel speak?

Pawel speaks the following languages: Polish (Native), English (Advanced), German (Intermediate).

How many years of experience does Pawel have?

Pawel has at least 14 years of experience. During this time, Pawel has worked in at least 5 different roles and for 16 different companies. The average length of individual experience is 1 year and 11 months. Note that Pawel may not have shared all experience and actually has more experience.

What roles would Pawel be best suited for?

Based on recent experience, Pawel would be well-suited for roles such as: AI AGENT Shopping assistant, Fullstack Developer — Contractor, Frontend Developer — Contractor.

What is Pawel's latest experience?

Pawel's most recent position is AI AGENT Shopping assistant at Side project.

What companies has Pawel worked for in recent years?

In recent years, Pawel has worked for Side project, Fortum, Nexum, Valtech, and B/S/H.

Which industries is Pawel most experienced in?

Pawel is most experienced in industries like Construction, Information Technology (IT), and Utility Services. Pawel also has some experience in Retail, Banking and Finance, and Manufacturing.

Which business areas is Pawel most experienced in?

Pawel is most experienced in business areas like Information Technology (IT), Product Development, and Project Management. Pawel also has some experience in Quality Assurance (QA), Business Intelligence, and Marketing.

Which industries has Pawel worked in recently?

Pawel has recently worked in industries like Utility Services, Banking and Finance, and Information Technology (IT).

Which business areas has Pawel worked in recently?

Pawel has recently worked in business areas like Information Technology (IT), Product Development, and Marketing.

What is Pawel's education?

Pawel holds a Master in Civil Engineering from Warsaw University of Life Sciences.

What is the availability of Pawel?

Pawel is immediately available full-time for suitable projects.

What is the rate of Pawel?

Pawel's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.

How to hire Pawel?

To hire Pawel, click the Meet button on the profile to request a meeting and discuss your project needs.

Average rates for similar positions

Rates are based on recent contracts and do not include FRATCH margin.

800
600
400
200
Market avg: 610-770 €
The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.
Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.