Istvan J.


732 dollar
17 ans

Mon expérience

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High-Tech Development LtdJune 2014 - Présent

I have been working on an own project which is an IoT platform aiming to provide a higher level access to basic physical components (such as servos, LEDs, sensors) through a web UI and a web API for people who want to implement their own IoT device without having to deal with low level or any code.

The project consists of 3 pillars:
- Web UI (React / Redux / MQTT over WebSocket / AWS Amplify / Material UI)
- Cloud (AWS on Serverless: Lambda / IAM / IoT / Cognito / DynamoDB / S3 / etc.)
- Hardware (ESP32 / C / C++ / MicroPython / AWS C SDK)

I have met various new, modern and challenging technologies while developing this project. Also, it has been great fun to have an idea and the chance to work on it.
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London App WorksFebruary 2019 - July 2019

I have had the opportunity to work on an exciting project where I carried on using the React
ecosystem, as well as met technologies I had never used such as Firebase. I was implementing a web
API for mobile apps on the backend with NodeJS, and a React-based web app on the frontend. I was

in a team of 5 people, working in an agile environment. We all worked remotely.
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Idea is EverythingJune 2018 - October 2018

I have been working remotely on a website of a client of Idea Is Everything, called 23 Capital ( The project had been already running when I joined and the technology stack had been already given: NodeJS, HandlebarsJS, jQuery, SASS, Heroku. Since I was familiar with these technologies had no problem hit the ground running.
This was a 100% remote work.
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Arcadia Group LtdFebruary 2018 - July 2018

I've been working as a React / Redux / NodeJS full stack developer on Arcadia's main e-commerce platform that serves various brands such as Topshop, Burton, Evans and more.
My tasks were to build new features as well as platform maintenance. This time I have met the Serverless technology stack (on AWS) which I really liked and am looking forward to use it in future projects.
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Collaboration CollectiveOctober 2017 - December 2017

I've been doing frontend work for a short project which was to build up the customer facing website for a client of Collaboration Collective. The backend of the website was built with Ruby on Rails and my job was to pull a completely new design over it.
I enjoyed working remotely in a small but experienced team where one of my teammates was already an ex-colleague of mine from Virgin Media, also that I had the freedom of choosing the frontend tools and methodology: Bootstrap, SASS, BEM naming.
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SavisApril 2017 - August 2017

I've been taking part in development of Savills brand new isomorphic Search site using React & Redux. Due to historical reasons the backend wasn't built with JavaScript/NodeJS which meant it couldn't share the same technology and codebase with the client, so that we fell back to a custom solution to implement isomorphism.
I liked the team and the way we tackled all the heavy challenges.
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SainsburyDecember 2015 - February 2017

I've had the chance to participate in two great projects at this time: Sainsbury's Store Locator and an admin web interface for the revolutionary SmartShop. Both projects were built with different tools on top of JavaScript and NodeJS so that I was required to adapt to these technologies: While Handlebars/Baobab/Express/JSDom/Browserify/Gulp were used in Store Locator, React/Redux/Koa/WebPack in SmartShop Toolbox. Both projects were covered with unit, functional and behavioural tests: Jasmine, Karma, Chai, Mocha, Enzyme, Sinon, Cucumber, PhantomJS,, Selenium. My tasks were to implement new features both on backend and frontend such as an internal API proxy, OAuth authentication middleware, reporting middleware as well as Server Side Rendering, utilising Memcache to speed up the page (Store Locator), build React Components bound with Redux, continuos refactoring to name a few. SmartShop Toolbox consists of several micro services mostly written in JavaScript and NodeJS.
In terms of devops I've gained some basic experience in Ansible and kept using Vagrant.
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Wireless Logic LtdJune 2014 - August 2015

- Integration of several Mobile Network Operators APIs using SOAP APIs
- Development of a SIM management platform using Symfony framework, RabbitMQ and Solr
- Working with various third party companies to integrate their solutions into WL’s platform
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Virgin MediaJanuary 2013 - May 2014

I’ve got experienced with Symfony 2, Test-Driven Development, and Continuous Integration. I have met new exciting technologies like Vagrant, Jenkins, Behat, Selenium.
I mostly worked on TV Anywhere site where I met various challenging tasks: RESTful web service development, implementation of new features and code optimisation, refactoring of old legacy code. I also worked on JavaScript code helping the frontend guys.
I have worked in a fully agile team, working in a Scrum-style development process.
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KacheengDecember 2011 - December 2012

- it was an early stage startup aiming to revolutionise social buying
- I was responsible for the UX/Wireframes and coding the frontend
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CubeArtSeptember 2007 - November 2012

During this period of time I built various websites using Symfony 1 mostly for small and mid-sized companies.
I participated implementing a hungarian news site called (Positive Day). This time we chose to use the brand new Symfony 2 framework and also used ElasticSearch to speed up the page.
I was also responsible for setting up and maintaining the company's LAMP server.

Self-employedAugust 2010 - December 2010

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Ability Office HungarySeptember 2006 - July 2007

I worked on the intranet process management system by maintaining and improving it. Here I got

to know Smarty and AdoDB.
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Parola LtdAugust 2005 - June 2006

System administrator and PHP Developer. I gained a considerable experience in the different flavors

of Linux, used PostgreSQL database server, and developed a variety of PHP-based websites.

Mes compétences

Windows, Symfony, SSH, Solr, SOAP, Smarty, Selenium, Scrum, RESTful Web Service, Redux, React.js, RabbitMQ, PostgreSQL, PHP, OS X, Node.js, MVC, Mac OS X, Linux Server, Linux, LAMP, jQuery, JavaScript, Java, HTML, Git, FTP, Flux, CSS, Composer, C/C++, BDD, Arduino, AngularJS