Ciklum Company Profile

Senior JS, React Native Developer for Ciklum Digital


Opis pracy

Ciklum is a Software Engineering and Solutions Company.

Our 3,000+ IT professionals are located in the offices and delivery centres in Ukraine, Belarus, Poland and Spain.  

As Ciklum employee, you'll have the unique possibility to communicate directly with the client when working in Extended Teams. Besides, Ciklum is the place to make your tech ideas tangible. The Vital Signs Monitor for the Children’s Cardiac Center as well as Smart Defibrillator, the winner of the US IoT World Hackathon, are among the cool things Ciklumers have developed.  

Ciklum is a technology partner for Google, Intel, Micron, and hundreds of world-known companies. We are looking forward to seeing you as a part of our team!  

On behalf of Ciklum Digital, Ciklum is looking for a Senior JS, React Native Developer to join Kyiv team on a full-time basis.  

Project description:  

The Client develops state-of-the-art smart patches for accurate and comprehensive sleep tests at home. The Client marries advances in flexible electronics, machine learning and wearable technology to make sleep medicine more seamless and accurate than ever before. Their patent-pending technology includes the full set of parameters to diagnose sleep apnea and other chronic sleep disorders at the comfort of your home. The novel patch technology supports applications in many healthcare domains, and delivers the benefits of a sleep clinic in a 3-inch wearable form-factor, seamlessly and conveniently.  

The project is to develop the mobile component of their solution, integrating with the IoT sensors and backend which will monitor patient sleep patterns via heart rate and breathing patterns, will analyze the data and share with physicians.


  • Create and maintain modern interfaces according to unit standards
  • Code Quality. Follow and improve code quality standards
  • Contribute ideas through your knowledge of evolving Front End technologies
  • Be proactive in communication with team members and client
  • Be a part of a positive and fun team environment
  • Use industry best practices of development processes & tools, adopt and improve them
  • Analyze and Estimate. Perform technical assessment of UI mockups/wireframes to ensure the possibility of their implementation within reasonable time
  • Software Design. Create and review software feature design documents and provide the solution
  • Mentorship of junior colleagues


  • HTML/CSS. Preprocessors, Methodologies
  • Core, Performance, Security
  • Application state management
  • Package management, Module bundling
  • CI/CD
  • oAuth, JWT
  • Design patterns, OOP, Development principles
  • Software testing. Approaches, testing types
  • Git
  • Upper-Intermediate English
  • Understanding of Scrum process
  • Framework: React Native
  • Components
  • Hooks
  • Forms
  • Navigation
  • Hooks
  • JSX & Virtual DOM
  • Xcode & Android studio
  • State management
  • Performance
  • Understanding of Android and iOS ecosystem
  • User interactions for specific OS
  • Basic understanding of native languages
  • Testing
  • Mobile apps CI/CD specific


  • Other mainstream framework (Angular, React, ReactNative, AngularJS, Vue, Ionic, Node.js+Express)
  • PWA
  • Quality tools (input/output complexity)
  • Experience with CI/CD set up (GitlabCI)
  • Application state management (MobX / Saga / etc.)
  • Gulp
  • Sonar
  • Docker
  • GitlabCI
  • Familiar with UX concepts such as Information Architecture
  • Agile (principles, Kanban, Scrum), task tracking tool (JIRA), knowledge management (Confluence)

Personal skills

  • Works under general direction, accepts guidance and has work reviewed at agreed milestones
  • Has working-level contact with customers and colleagues
  • May supervise others or make decisions which impact the work assigned to individuals or phases of projects
  • Performs a range of work, sometimes complex and non-routine
  • Demonstrates effective communication skills
  • Plans, schedules and monitors own work (and that of others where applicable) competently
  • Contributes fully to the work of teams

What's in it for you

  • Career growth opportunities
  • Realization of your innovative ideas in building new Ciklum Solutions and Services
  • Friendly collaborative teams and enjoyable working environment
  • Professional skills development and training programs
  • Variety of knowledge sharing, training and self-development opportunities
  • State of the art, cool, centrally located offices with warm atmosphere which creates really good working conditions