Jiri Rebenda

Web Developer - Self-employed (May 2013 - Present)

As a contractor I help my clients to achieve their business goals. I worked as a fullstack developer with a combination of PHP+JS from 2012. Since 2017, I focus primarily on frontend development using Angular 2+ framework.

I prefer to work on as recent version of Angular as possible. I love to adapt new things and stay up-to-date with latest changes in the framework.

When building FE apps, I'm used to think reactively. It means, that if possible, I extensively leverage RxJs and signals concepts. I believe it's crucial for creating well maintainable apps.

Below is a short list demonstrating some of the projects I've been recently involved in.

• GRITA

  Complete re-implementation of old grant information system for Czech Science Foundation using Angular Framework for FE part.

  • Nx monorepo
  • Angular 20
  • NgRx
  • Extensive RxJs usage
  • Adapting signals
  • Keycloak library
  • SCSS, Bootstrap
  • Usage of gov.cz design system & Angular CDK for development of custom form controls
  • Fixing bugs, UX issues & reducing the technical debt in the existing codebase
  • Development of new features

• Global Payments Europe

  Re-implementation of old information system for managing distribution of physical payment cards. Mostly development of new features.

  • Nx monorepo
  • Angular 17
  • NgRx
  • Internal wrapper library for the PrimeNG

• Grafton

  Re-implementation of legacy internal information system for the personal agency. I mainly helped with fixing & refactoring the core concepts in the existing app to mitigate the most severe issues.

  • Nx monorepo
  • Angular 19 (migration from v17)
  • NgRx
  • Customization of internal wrapper library for the PrimeNG

External Angular Developer COPS Financial Systems, s.r.o. (May 2021 - Jul 2022)

As an outsourced FE developer, I've designed & implemented most of the FE part for one of the applications developed by the xitee k.s. company. The cooperation was on fully remote basis.

The developement itself consisted of creation of the proof-of-concept for the new version of trading platform intented for matching the potential investors with relevant real estate developement projects.

Main technologies used in the project:

• Angular 11 framework,
• Custom state management,
• SCSS,
• Storybook.

Beside developement, notable effort has been dedicated to code reviews & validating the BE API implementation which has been written in .NET and deployed to Azure.

Angular Developer - Principal engineering s.r.o. (Oct 2020 - Mar 2021)

Full-time development of FE side for internal system called People Manager. The app was written using Angular 7 framework with conjuction with old prime-ng component library. My main responsibility was to refactor legacy codebase, improve UX & fix known bugs in MVP version of the product.

Lead Frontend Developer - GoodVision s.r.o. (Aug 2017 - Jun 2020)

GoodVision is a cloud-based software for mining events from camera recordings and their presentation in a meaningful way.

My responsibility was to develop frontend application of GoodVision video insights platform. Assuring overall quality using GitLab CI pipelines, performing code reviews & discussion with rest of team especially to achieve the best possible UX. The FE team consisted of 4 people (including Junior & Senior developers).

Main technologies used in this project:

• Angular 8 framework,
• NgRX state management library,
• advanced RxJS usage,
• Storybook for component-driven development,
• JEST for unit testing,
• ng service worker for enabling Progressive Web App features (push notifications, app updates),
• fabric.js library for scene management,
• and custom ngx-braintree library for online payments.

Software Engineer Jr. - CertiCon a.s. (Feb 2016 - July 2017)

Customization of PHP legacy system myperfi for managing student personal finance.

Auxiliary PHP/JS development at Passengera mainly using the Symfony framework and Sonata Admin.

Development of AngularJS GUI for administration of CertiConVis application.

Web Developer - C4P s.r.o. (May 2013 - Jan 2016)

Development of complex web-driven projects (http://www.onkoportal.cz, http://www.webakademie.cz, http://www.odbornykonzultant.cz) and mobile app development (SmartCongress). Database-related activities included both new database (re)design and also data migration tasks.

Main technologies:

• PHP (mainly Nette Framework in conjunction with other various libraries),
• MySQL (introduced 'common' database system design which is separated from project-specific model),
• JavaScript (jQuery, bootstrap.js, ...),
• HTML & CSS (including bootstrap framework),
• C# (Windows Phone 8 application - BOD 2014, WFHSS 2014, BOD 2015),
• Java (Android app development & customization - BOD 2015).

Information System Developer - Neomax CZ s.r.o. (Feb 2013 - Apr 2013)

Participation in development of web-based information system for ISPs called Mikrobill (startup project). Worked in small team of 3 developers in total. Development has been abandoned due to insufficient demand.

Main technologies:

• PHP (no framework),
• MySQL database design,
• AJAX driven UI based mainly on jQuery UI and numerous JavaScript libraries.

Webmaster - MeDitorial s.r.o. (Jul 2012 - Jan 2013)

Mainly bug solving tasks together with implementation and customization of an internal Content Management System. Slides implementation for an online HTML & JavaScript driven e-detailing presentation system included HTML & CSS coding as well as the JavaScript usage. Creation of simple custom 'bug tracking system' which led to increased project management effectiveness.

Some of the websites which I've been working on:

• uLékaře.cz,
• proLékaře.cz

Main technologies:

• Raw PHP (no framework, usage of internal legacy coded CMS),
• JavaScript (jQuery & jQuery based extensions including custom HTML5 presentation library ClipNote),
• Basic Linux usage.