Lukas Liesis, Developer in Vilnius, Vilnius County, Lithuania
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Lukas Liesis

Verified Expert  in Engineering

WebSockets Developer

Location
Vilnius, Vilnius County, Lithuania
Toptal Member Since
May 6, 2016

Lukas is a skilled developer with 20 years of experience on projects with up to 15 million users. He's passionate about React, React Native, MongoDB, web sockets, and Material Design. He has experience with DynamoDB, SQL, MongoDB, and RESTful and socket-based APIs. He's used and created custom APIs and can build software from the ground up.

CSSREST APIsjQueryNode.jsReactFluxMacOSESLintSVGSQLGitMongoDBAmazon DynamoDBUnit TestingGitHubVirtual Private Server (VPS)Usability

Availability

Part-time

Preferred Environment

React, Node.js, GitHub, TypeScript, Amazon Web Services (AWS)

The most amazing...

...thing I've built was in cooperation with ex-Googlers and scientists from NASA; it was a part of a core for services used by 15+ million users globally.

Work Experience

Software Engineer

2016 - 2016
Wristband E-shop
  • Developed a single-page site to choose, order, and follow orders. Integrated with payment APIs.
Technologies: Material UI, Firebase, React

React Developer

2015 - 2016
ArcChat.com
  • Took on a full-stack challenge to minimize this site's technology stack down to one programming language (JavaScript). JS is used all the way through, from server to client and database and even for most CSS. I also used material-design specifications to create an easy-to-use UI. With React.js, I was so much more productive than with PHP's MVC style frameworks. It was a pleasure to move out of PHP world.
  • Completed the project solo in three months.
  • Built a native Android app with React.
Technologies: WebSockets, RESTful Development, REST APIs, Git, PayPal API, MongoDB, NGINX, Material Design, Node.js, React Native, React

Android Developer (React Native)

2015 - 2015
LHM Group
  • Built a React Native app for Android where you can preview a house project and order from LHM. The challenge was to build a React Native app for Android while it was released only for 1-2 weeks for public usage outside of Facebook.
Technologies: React Native

Software Engineer

2012 - 2015
Hostinger International
  • Hired as 5th engineer at Hostinger to help develop the Hostinger and Youhosting network (15,000,000+ users) with Zend Framework and Doctrine. Developed on the full-stack, including back-end and front-end.
  • Developed internal software for users, staff members, and invoice management.
  • Redid and optimized the main home page.
  • Created an invoice management system for internal usage from the ground up. Added a lot of new futures for Hostinger's network management system.
Technologies: REST APIs, RESTful Development, Zend Framework, PHP, MySQL, JavaScript

Developer/SEO Consultant/Freelancer

2012 - 2013
VEGE
  • Built VEGE.ru's website. It is an official VEGE website to represent the company for clients from Russia, Ukraine, and other Russian speakers.
Technologies: PHP, SQL, Apache, Joomla

SEO Consultant, Freelancer for eCommerce

2011 - 2013
Metalo Amžius
  • Improved SEO to increase online sales. Remade the administration panel to make it easier to use. Taught administrators to use the CMS. Made all required updates to content, layout, etc.
  • Used PrestaShop to do the biggest part of the job.
  • Synced the item status with old software that manages item availability.
Technologies: Virtual Private Servers, Twilio Sync API, PrestaShop

Trafikito.com

https://trafikito.com/
I always wanted to monitor output of any command. With Trafikito I can. You can monitor the output of any command and execute an API call when stuff happens.

Command output monitoring service deployed on high-quality global AWS Infrastructure—three edges, global DB tables, and load-balancing.

Oisie.com

http://Oisie.com
A tool for teachers to create offline tests, done with PhalconPHP, Twitter Bootstrap, and MySQL. I organized five teaching sessions on how to use this tool. It was a very interesting experience, and I got in touch with users to find out many UX little things that matter for users, making changes to the software in response.

Free-Templates.lt

A fully automatic website with pre-made content. This system has tens of thousands of templates ready to publish. The system grabs a template archive, analyzes it, makes some changes, and publishes. It has search by hue.

Squirrel-Host.com

Squirrel-Host.com is a hosting solution. Here, you can register a free account and get hosting for your website. Check out all the great features on the Squirrel-Host.com page.

News-Flow

What was challenging in this project is the amount of data. I developed the crawler, which collected news from around the net and published them on a news-flow site. Used a SQL database.

Manualai.lt

http://manualai.lt/
Manualai.it is an educational project to help people in Lithuania learn about IT. There are several connected sites with articles about coding, design, and a forum for help and support. Done with Joomla, SMF forum, and some custom components for those systems.

AutoMouser

https://sourceforge.net/projects/get-automouser/
Built with the C family. I needed an auto mouse clicker and didn't found exactly what I was looking for, so I learned some .NET code and made it myself. It was my second app with .NET framework and C family languages. It was interesting to move out of my comfort zone of web development and try building something for Windows OS. AutoMouser is quite a popular tool now with ~1500 weekly downloads.

Gerda Photography

https://www.facebook.com/mylovepastel/
Together with my wife, we are organizing professional photo-shoots. We shoot private sessions or big events.

We are devoted to feelings, emotions, and real life. People love our photographs because of the cosiness, lighting, and authentic decorations. Our photography is 70% psychology, 20% design, and 10% technique.

React Examples Repository

https://github.com/liesislukas/ReactJs-boilerplate-and-examples
A GitHub repository where I create example apps with React. By teaching, we learn.

IT Certifications

Completed (2003-2007) via IT Academy "Strauja."

Languages

JavaScript, CSS, HTML, SQL, PHP, TypeScript

Frameworks

Material UI, Flux, React Native, Zend Framework

Libraries/APIs

Node.js, REST APIs, jQuery, React, PayPal API, Twilio Sync API

Paradigms

RESTful Development, Unit Testing

Platforms

MacOS, Joomla, Firebase, Amazon Web Services (AWS)

Other

Google Material Design, WebSockets, Freelancing, ESLint, Ubuntu Server, Usability, SVG, Material Design, Virtual Private Servers

Tools

Adobe Photoshop, Adobe Lightroom, NGINX, Git, GitHub, Apache, PrestaShop, Adobe Illustrator

Storage

Amazon DynamoDB, MongoDB, MySQL

2012 - 2014

Master's Degree in Physics (Environmental Management)

Vytautas Magnus University - Lithuania

2010 - 2012

Secondary B.S. Studies Degree in Business and Applied Informatics

Vytautas Magnus University - Lithuania

2008 - 2012

Bachelor of Science (B.S.) Degree in Physics (Energetic)

Vytautas Magnus University - Lithuania

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