Sebastian Ksiezak

Front-end developer

Rzeszów, Poland

Experience

May 2023 - Present
2 years
Rust, Germany
Remote

Front End React Developer

webbar GmbH

I am currently working for a remote-first company based in Rust, Germany. In WebBar GmbH I am responsible for developing front end part of the multitenant system.

Working on this project, I am using technologies and tools such as:

  • JavaScript / TypeScript,
  • React and Next.js,
  • HTML5 and JSX,
  • CSS/SCSS and Tailwind,
  • Recoil for app state management,
  • GraphQL,
  • TanStack Query to improve work with RESTful APIs
  • StoryBook, Cypress e2e Tests,
  • Docker,
  • JetBrains for Project Management,
  • WebStorm as Programming IDE,
  • CI/CD pipeline implemented with GitHub and DigitalOcean.

My Tasks include:

  • creating core components with Storybook, Cypress e2e tests and Tailwind for CSS,
  • building complex layouts and pages for PWA app with React and Next.js technology,
  • managing app state with Recoil library,
  • fetching backend data using GraphQL and TanStack Query library,
  • taking care of good quality code using design patterns and principles of clean code.,
  • taking care of CI/CD pipeline green state,
  • daily meetups with an international team, held in english.
Mar 2022 - Apr 2023
1 year 2 months
Rzeszów, Poland

Frontend Developer

SolvSoft

In this position I was working as a front end developer using Vue js.

  • I was involved in the development of 4 projects for a Swedish client.
  • I worked in a team of 12 people in weekly sprints.
  • My tasks also included contact with the client, joint analysis of needs and solutions. The discussions were conducted in English.

Projects varied in technological level:

  • I worked in an older project written in pure JavaScript, Vue 2 - options api and Vuex.
  • As well as in two newer ones that had Vue 2 with Composition API, Vuex and Type Script.
  • And in a project written in Vue 3, with full TypeScript typing and implemented Pinia and Vite.

For component building and project styling I used:

  • Vuetify,
  • Quasar,
  • CSS/SCSS.

Development environment:

  • I was using VSCode editor.
  • For version control, I used Git with GitLab.
Jan 2019 - Dec 2021
3 years
Rzeszów, Poland

Ecommerce Specialist

Euplus

My tasks included:

  • Market analysis, competition.
  • Monitoring sales,
  • Running PPC advertising campaigns,
  • Negotiating with suppliers of goods,
  • Retail customer service.
Jan 2016 - Dec 2019
2 years

Pomoc Techniczna w Biurze Rachunkowym

Biuro Rachunkowe

Nov 2013 - Jan 2016
2 years 3 months

Android App Developer

Samozatrudnienie

Jun 2013 - Sep 2013
4 months
Coimbra, Portugal

Erasmus Internship Program

Active Space Technologies

As part of the Erasmus Internship Program at Active Space Technologies (Systems and Controls department), I participated in the InTrain project and performed the following tasks:

  • testing ZigBee PRO modules,
  • development of software for displays (C++ programming in Visual Studio),
  • development of software for embedded systems (C programming in Eclipse),
  • testing of sensors,
  • assisting with documentation.

Summary

I am Sebastian and I am a Frontend Developer with commercial experience in two major frameworks: React / Next.js and Vue. I am currently working for a remote-first company based in Rust, Germany. In WebBar GmbH I am responsible for developing frontend part of the multitenant system. Working on this project, I am using technologies and tools such as: - JavaScript / TypeScript, - React and Next.js, - HTML5 and JSX, - CSS/SCSS and Tailwind, - Recoil for app state management, - GraphQL, - TanStack Query to improve work with RESTful APIs - StoryBook, Cypress e2e Tests, - Docker, - JetBrains for Project Management, - WebStorm as Programming IDE, - CI/CD pipeline implemented with GitHub and DigitalOcean. My Tasks include: - creating core components with Storybook, Cypress e2e tests and Tailwind CSS, - building complex layouts and pages for PWA app with React and Next.js technology, - managing app state with Recoil library, - fetching backend data using GraphQL and TanStack Query library, - taking care of good quality code using design patterns and principles of clean code., - taking care of CI/CD pipeline green state, - daily meetups with an international team, held in english. In the previous position I was working as a FrontEnd Developer for a Swedish client. I was involved in the development of 4 projects, each with a slightly different level of techstack from the Vue js family. Techstack: HTML5 CSS / SCSS JavaScript ES6 / TypeScript Vue 2 - Options Api & Composition Api Vue 3 Vuetify 2, Quasar Vue Router Vuex / Pinia Git & GitLab In the past, I had exposure to object-oriented programming in languages: - C++ (engineering thesis titled: "Autopilot measurement interface software". - Java / Android (project: "Mobile flight recorder for a UAV". I am currently developing skills in: - Front End Development using React, Vue, - Good programming practices using design patterns, principles of clean code. In 2024 I also plan to develop into a Full Stack Developer using: - Node js - Express, Nestjs - Mongo DB - AWS

Languages

Polish
Native
English
Advanced
Spanish
Intermediate
German
Elementary

Education

Oct 2012 - Jul 2014

Politechnika Rzeszowska im. Ignacego Łukasiewicza

Lotnictwo i Kosmonautyka · Rzeszów, Poland

Feb 2011 - Jul 2011

Universitat Politècnica de València (UPV)

Erasmus Students Exchange, Aviation · València, Spain

Oct 2007 - Feb 2012

Politechnika Rzeszowska im. Ignacego Łukasiewicza

Inżynier (Inż.) · Lotnictwo i Kosmonautyka · Rzeszów, Poland

Certifications & licenses

Android Certified Application Developer

Beginning iOS App Development - Nanodegree Program

JSE - Certified Entry-Level JavaScript Programmer

OMG-Certified UML Professional

TOEIC - Test of English for International Communication