IL
United States
UTC-10:00 (America/Adak)
Ivan L.
Senior R&D engineer with deep backend expertise (Node.js, PHP) and mobile apps skills (iOS, ReactNative)
Higher Education Computer Science
£69,100/YEAR
£5,800/MONTH
£34/HOUR

Expertise

Core technologies

JavaScript 4 years
Node.js 2 years
React Native 2 years
PostgreSQL 2 years
Swift 4 years
GraphQL 2 years

Other technologies

Express.js
XML
JSON
RESTful API
GatsbyJS

Portfolio Highlights

Jan `19 – Present
1 year

Ethereum Blockchain Movie Prediction Game

Movie prediction game built on the Ethereum Blockchain. It is a new strategic game where you play the role of a Movie Producer. Тhrough research and preference, players select the movie(s) they believe will do the best at the box office in relation to other competing movies. This game combines the entertainment value of the movies, with the emerging blockchain technology, to enhance the everyday experience of going to the movies.

Team Lead, React developer

I was involved in back-end development, was responsible for developing pure Serverless infrastructure based on AWS Lambda. Bugfixing and support.

React.js
Ethereum
Blockchain
Serverless AWS Lambda
Aug `18 – Mar `19
7 months

Under NDA

An online web service for the German travel industry: a unique travel finder for visiting places located far from the mass tourism points in Italy. It offers users family-run accommodation and activities organized by locals. The team used the following technology stack for the project: Node.js,React.js, Gatsby.js, GraphQL (Apollo GraphQL), and MongoDB.

Team Lead, Backend developer

As a team leader, I was responsible for leading the development team on the project. Also, I was responsible for all the development of the back-end, in particular, for Node.js RESTful web service development, integration of payment systems PayPal and Stripe, transactional email integration - Mandrill.

MongoDB
Node.js
React.js
Apollo
GraphQL
GatsbyJS
Mar `18 – Dec `18
9 months

Social Mobile App for Musicians and Music Lovers

An iOS social network app for US company. With this application, users can create, listen and share music. The application main feature is collaboration mode, which allows users to play together on various musical instruments online. During the project, our developers were responsible for Node.js RESTful web service development, iOS client app development, implementing collaboration features, in-app purchases integration.

Backend architect, Backend developer, iOS developer, Team Lead

Was responsible for Node.js RESTful web service development, iOS client app development. In-app purchases integration.

Express.js
Node.js
PostgreSQL
Socket.IO
Geolocation
Geospatial
Swift
Alamofire
iOS SDK
Aug `18 – Nov `18
3 months

Calendar iOS app

Callendar app _________________________

Backend architect, Backend developer, iOS developer

Was responsible for Node.js RESTful web service development, iOS client app development. In-app purchases integration.

Express.js
Node.js
PostgreSQL
Swift
Alamofire
CoreData
iOS SDK
May `17 – Jul `18
1 year

US retail company

A cross-platform mobile application for getting the best deals and discounts in the popular American furniture store chain. The app alerts to let users know of upcoming sales for discounts and holiday coupons. The app includes Store Locator to help a user quickly navigate to the nearest stores.

Team Lead, React Native Developer

First, the application was created with Xamarin, and then the client requested a redesign using React Native with CodeRush technology, which our team successfully implemented. Therefore, during the project, I was responsible for transferring the app from Xamarin to React Native.

CSS
JavaScript
React Native
HTML
Dec `17 – Feb `18
2 months

Password keeper app

Password keeper app

iOS developer

Implementation of UI features

Swift
SQLite
iOS SDK
Apr `17 – May `17
1 month

(under NDA)

The project was intended to develop an application for medical personnel that would simplify the process of collecting and storing all patient information. The solution allowed for creating medical records using customizable templates. Medical records were encrypted and stored on a server. The existing records could be sent by email as PDF files and edited by other doctors.

iOS developer

Data synchronization between client abb and web server. Codebase migration from Objective-C to Swift. Was responsible for supporting and bug fixing.

Objective-C
Xcode
Apple UIKit Framework
JSON
Swift
Alamofire
Foundation
Aug `16 – Apr `17
8 months

Alex Schneider, CEO & Owner at Life4Me+, Switzerland

The application allows patients to receive news about HIV infection and related diseases, events and people. The GPS navigator helps patient find a nearby hospital, clinic, or HIV community throughout the world. It helps to conveniently organize their medication intake timetable and set concealed and personalized reminders, get doctor's recommendations, and schedule doctor’s appointments or blood tests.

Php developer, backend architect

Was involved in developing the architecture of the application. Creating admin panel and RESTful for mobile application service.

PHP
PostgreSQL
JSON
Nginx
Redis
RESTful API
Symfony2
Jun `16 – Aug `16
2 months

under NDA

The aim of the project was to develop a website based on the WordPress platform which contained detailed information about company’s services and products, order form, downloads, etc.

Php developer

Was responsible for PHP and WordPress development.

CSS
JavaScript
jQuery
MySQL
PHP
WordPress
HTML
Apr `16 – Jun `16
2 months

under NDA

The aim of the project was to develop the website with the ability to buy company’s products online and pay instantly with a credit card. The order page included shipping and tax calculation.

Php developer

Integrated the payment system and e-commerce module.

CSS
JavaScript
jQuery
MySQL
PHP
WordPress
HTML
Jan `14 – Aug `15
2 years

US startup company

Platform for processing payments with face recognition possibilities. The following payment processors were integrated: First Data Gateway, PayPal MassPayments, TotalTransact, Vantiv. For a face recognition processor was used Luxand FaceSDK.

iOS developer

Was creating the architecture of the application. Implementation of the face recognition system and card payment system. Worked with RESTful service.

Android SDK
Java
PostgreSQL
Spring Framework
RESTful API
SQLite
CocoaPods
iOS SDK
Dec `12 – Feb `13
2 months

Under NDA

Mobile clients for iOS/Android phones and tablets for playing radio in real time from different station streams. Radio station streams were hosted on Parse.com

iOS developer

Bugs fixing

Android SDK
Parse
Apache Ant
CocoaPods
iOS SDK

About me

I am a developer with over 9 years of software development experience. My experience includes 4 years in mobile development for iOS and 3 years of back-end development in PHP 5/7. Over one year of React, and two years of React Native. Also, I have two years of experience with backend development on Node.js. I'm a results-oriented developer experienced in writing highly readable, clean, maintainable source code. Well-versed in using XCode, iPhone SDK, and Cocoa Touch framework. For back-end development, I use Symfony 2+ framework. My responsibilities include ensuring that proper technical vision and software engineering processes are implemented on all projects incorporating best practices.

Software Development agency #1252

100-400
Sweden, Ukraine
GMT+1
Core Expertise
C#
Java
JavaScript
Kotlin
.NET
Node.js
PHP
Python
React.js
React Native
WordPress
Swift
Industries
E-Commerce & Retail, Banking & Finance, Healthcare & Medicine
Swedish provider of IT consulting services based out of Ukraine. We build teams of developers and designers from Ukraine for European, Israeli, and North American IT companies and successful start-ups. We work within an informal atmosphere based on equality, personal responsibility, and trust. Beetroot is recognized as one of the most democratic workplaces globally. Recently we received WorldBlu Freedom-Centered Cultures Award, which recognizes companies across the world that have built workplace culture people love. Thus Beetroot made it to the list of 33 world’s most freedom-centered employers.