senior full stack developer
Aktualisiert am 01.04.2026
Profil
Freiberufler / Selbstständiger
Remote-Arbeit
Verfügbar ab: 01.04.2026
Verfügbar zu: 100%
davon vor Ort: 100%
Ruby on Rails
JavaScript
HTML
CSS
HTML5
CSS3
Twitter Bootstrap
PostgreSQL
Ruby
AWS
TailwindCSS
Shopify
React
Heroku
Liquid
English
Verhandlungssicher
Russian
Muttersprache
German
Grundkenntnisse
Ukrainian
Muttersprache

Einsatzorte

Einsatzorte

Berlin (+50km)
Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

CRM Back-Office for a Renewable Energy Company


Customer: Eltex


Tasks:

  • CRM back office with multiple types of users, 3-rd party API integrations, complex database, user policies, etc


Technology:

Ruby on Rails


CRM Back-Office for a Renewable Energy Company


Customer: SolarMente


Tasks:

  • CRM back office with multiple types of users, 3-rd party API integrations, complex database, user policies, etc


Technology:

Ruby on Rails


Music catalog


Customer: BluPrint Music


Tasks:

  • Music catalog, responsive web app with custom audio player, music upload/download, taggings, search, etc


Technology:

Ruby on Rails, React + Redux (SPA)

Private desktop sales management application


Customer: GoodGreen


Tasks:

  • Private desktop sales management application with database visualization and encryption.
  • Remote authentication and user management with Rails

Technology:

Ruby on Rails, Electron

Back end API for a fitness mobile application


Customer: Wunderbody


Tasks:

  • Back end API for a fitness mobile application with personal training plansgeneration, social functions, statistics, diet plans, etc

Technology:

Ruby on Rails

Creating new features for a social network


Customer: GoodPost


Tasks:

  • Creating new features for a social network with feed functionality, user posts, rss parsing, commenting, live chats, payment system integration, notifications, etc


Technology:

Ruby on Rails, React + Redux (SPA)

Back end API for a meditation mobile application supporting different types


Customer: Wundermind


Tasks:

  • Back end API for a meditation mobile application supporting different types of meditations, meditation packs, progress system and statistics


Technology:

Ruby on Rails

EduApp


Tasks:

  • Educational web platform for a Chinese English school with different types of users, tests and homeworks functionality, scheduling system, ranking, etc


Technology:

Ruby on Rails, JavaScript

PDF


Tasks:

  • Creating new features for file format online converter and PDF editor


Technology:

Ruby on Rails, JavaScript

LeftHook


Tasks:

  • Politics news website


Technology:

Ruby on Rails, JavaScript

Creating new features for social discussions forum


Customer: Pugme


Tasks:

  • Creating new features for social discussions forum with search functionality, tags system, ratings system, commenting, subscriptions, etc.


Technology:

Ruby on Rails, React + Redux (SPA)

Kombine


Tasks:

  • CRM for managing manufactory inventory and shipments with Shopify, Etsy, and UkrPoshta Api integration


Technology:

Ruby on Rails


Aus- und Weiterbildung

Aus- und Weiterbildung

3 years 10 months
2013-09 - 2017-06

Computer Engineering

Bachelor, National Aerospace University, Kharkiv
Bachelor
National Aerospace University, Kharkiv
  • Faculty of Aircraft Radio-electronic Systems, Department of computer networks and systems.

Kompetenzen

Kompetenzen

Top-Skills

Ruby on Rails JavaScript HTML CSS HTML5 CSS3 Twitter Bootstrap PostgreSQL Ruby AWS TailwindCSS Shopify React Heroku Liquid

Produkte / Standards / Erfahrungen / Methoden

Ruby on Rails
Experte
Ruby
Experte
React
Experte
HTML
Experte
CSS
Experte
Heroku
Fortgeschritten
PostgreSQL
Fortgeschritten
SQL
Fortgeschritten
Shopify
Fortgeschritten
Liquid
Fortgeschritten
PROFESSIONAL SKILLS
  • Ruby, Ruby on Rails
    • RESTful APIs
    • Rspec, FactoryBot, Capybara
    • Sidekiq
  • JavaScript:
    • React, Redux
    • Electron
    • JQuery
    • ES6
  • PostgreSQL, MySQL, SQLite
  • Linux (Ubuntu), Git
  • Deploying to EC2, Digital Ocean, Heroku. Experience with AWS services
  • Docker and Docker Compose basics
  • UX/UI design: HTML5, CSS3, S?SS, Bootstrap


EXTRA SKILLS

  • Figma, Photoshop, Premiere
  • Shopify, Gempages
  • Marketing skills: Facebook Ads, Pinterest Ads, Google Ads
  • Basics: Python, NodeJS, PHP, C#, C, Java
  • Basics: Flatter, Dart, React native


WORK EXPERIENCE

03/2022 - present

Role: senior full stack developer

Customer: SolarMente


Tasks:

  • Creating a website and a CRM web app (Ruby on Rails)


09/2012  - present

Role: full stack developer

Customer: Freelance


Tasks:

  • Creating websites and SaaS web apps from scratch (Ruby on Rails 4+ years, React 2+ years, Electron js) 
  • URL on request


03/2017 - 12/2017

Role: full stack developer

Customer: ByteScout, remote


Tasks:

  • Creating and maintaining online PDF editor 


Technology:

Ruby on Rails, JavaScript


05/2013 - 08/2017

Role: front end developer

Customer: Compsit, remote


Tasks:

  • Creating front end for various e-commerce websites 


Technology:

HTML5, CSS3,Javascript


05/2015 - 06/2016

Role: front end developer

Customer: Arbesko, remot


Tasks:

  • Creating and maintaining front end for an e-commerce website 


Technology:

HTML5, CSS3, Javascript


09/2012 - 07/2013

Role: front end developer

Customer: VisualPharm, remote


Tasks:

  • Creating and maintaining an e-commerce website


Technology:

HTML5, CSS3, Javascript, WordPress

Branchen

Branchen

Extensive experience in:

- Renewable Energy

- Education
- Ecommerce

Einsatzorte

Einsatzorte

Berlin (+50km)
Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

CRM Back-Office for a Renewable Energy Company


Customer: Eltex


Tasks:

  • CRM back office with multiple types of users, 3-rd party API integrations, complex database, user policies, etc


Technology:

Ruby on Rails


CRM Back-Office for a Renewable Energy Company


Customer: SolarMente


Tasks:

  • CRM back office with multiple types of users, 3-rd party API integrations, complex database, user policies, etc


Technology:

Ruby on Rails


Music catalog


Customer: BluPrint Music


Tasks:

  • Music catalog, responsive web app with custom audio player, music upload/download, taggings, search, etc


Technology:

Ruby on Rails, React + Redux (SPA)

Private desktop sales management application


Customer: GoodGreen


Tasks:

  • Private desktop sales management application with database visualization and encryption.
  • Remote authentication and user management with Rails

Technology:

Ruby on Rails, Electron

Back end API for a fitness mobile application


Customer: Wunderbody


Tasks:

  • Back end API for a fitness mobile application with personal training plansgeneration, social functions, statistics, diet plans, etc

Technology:

Ruby on Rails

Creating new features for a social network


Customer: GoodPost


Tasks:

  • Creating new features for a social network with feed functionality, user posts, rss parsing, commenting, live chats, payment system integration, notifications, etc


Technology:

Ruby on Rails, React + Redux (SPA)

Back end API for a meditation mobile application supporting different types


Customer: Wundermind


Tasks:

  • Back end API for a meditation mobile application supporting different types of meditations, meditation packs, progress system and statistics


Technology:

Ruby on Rails

EduApp


Tasks:

  • Educational web platform for a Chinese English school with different types of users, tests and homeworks functionality, scheduling system, ranking, etc


Technology:

Ruby on Rails, JavaScript

PDF


Tasks:

  • Creating new features for file format online converter and PDF editor


Technology:

Ruby on Rails, JavaScript

LeftHook


Tasks:

  • Politics news website


Technology:

Ruby on Rails, JavaScript

Creating new features for social discussions forum


Customer: Pugme


Tasks:

  • Creating new features for social discussions forum with search functionality, tags system, ratings system, commenting, subscriptions, etc.


Technology:

Ruby on Rails, React + Redux (SPA)

Kombine


Tasks:

  • CRM for managing manufactory inventory and shipments with Shopify, Etsy, and UkrPoshta Api integration


Technology:

Ruby on Rails


Aus- und Weiterbildung

Aus- und Weiterbildung

3 years 10 months
2013-09 - 2017-06

Computer Engineering

Bachelor, National Aerospace University, Kharkiv
Bachelor
National Aerospace University, Kharkiv
  • Faculty of Aircraft Radio-electronic Systems, Department of computer networks and systems.

Kompetenzen

Kompetenzen

Top-Skills

Ruby on Rails JavaScript HTML CSS HTML5 CSS3 Twitter Bootstrap PostgreSQL Ruby AWS TailwindCSS Shopify React Heroku Liquid

Produkte / Standards / Erfahrungen / Methoden

Ruby on Rails
Experte
Ruby
Experte
React
Experte
HTML
Experte
CSS
Experte
Heroku
Fortgeschritten
PostgreSQL
Fortgeschritten
SQL
Fortgeschritten
Shopify
Fortgeschritten
Liquid
Fortgeschritten
PROFESSIONAL SKILLS
  • Ruby, Ruby on Rails
    • RESTful APIs
    • Rspec, FactoryBot, Capybara
    • Sidekiq
  • JavaScript:
    • React, Redux
    • Electron
    • JQuery
    • ES6
  • PostgreSQL, MySQL, SQLite
  • Linux (Ubuntu), Git
  • Deploying to EC2, Digital Ocean, Heroku. Experience with AWS services
  • Docker and Docker Compose basics
  • UX/UI design: HTML5, CSS3, S?SS, Bootstrap


EXTRA SKILLS

  • Figma, Photoshop, Premiere
  • Shopify, Gempages
  • Marketing skills: Facebook Ads, Pinterest Ads, Google Ads
  • Basics: Python, NodeJS, PHP, C#, C, Java
  • Basics: Flatter, Dart, React native


WORK EXPERIENCE

03/2022 - present

Role: senior full stack developer

Customer: SolarMente


Tasks:

  • Creating a website and a CRM web app (Ruby on Rails)


09/2012  - present

Role: full stack developer

Customer: Freelance


Tasks:

  • Creating websites and SaaS web apps from scratch (Ruby on Rails 4+ years, React 2+ years, Electron js) 
  • URL on request


03/2017 - 12/2017

Role: full stack developer

Customer: ByteScout, remote


Tasks:

  • Creating and maintaining online PDF editor 


Technology:

Ruby on Rails, JavaScript


05/2013 - 08/2017

Role: front end developer

Customer: Compsit, remote


Tasks:

  • Creating front end for various e-commerce websites 


Technology:

HTML5, CSS3,Javascript


05/2015 - 06/2016

Role: front end developer

Customer: Arbesko, remot


Tasks:

  • Creating and maintaining front end for an e-commerce website 


Technology:

HTML5, CSS3, Javascript


09/2012 - 07/2013

Role: front end developer

Customer: VisualPharm, remote


Tasks:

  • Creating and maintaining an e-commerce website


Technology:

HTML5, CSS3, Javascript, WordPress

Branchen

Branchen

Extensive experience in:

- Renewable Energy

- Education
- Ecommerce

Vertrauen Sie auf Randstad

Im Bereich Freelancing
Im Bereich Arbeitnehmerüberlassung / Personalvermittlung

Fragen?

Rufen Sie uns an +49 89 500316-300 oder schreiben Sie uns:

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