Sebastian Ksiezak
Front-end developer
Experience
May 2023 - Present
2 years 1 month Rust, Germany
RemoteFront 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 yearsPomoc Techniczna w Biurze Rachunkowym
Biuro Rachunkowe
Nov 2013 - Jan 2016
2 years 3 monthsAndroid 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
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