Best Workplace 2019

Great Place To Work Great Place To Work Europe
Kuba, service
delivery manager

Front-end Developer

Location: Kraków

The challenges waiting for you:

Our Team works on web based application for managing hotel reservations. This is a new call center application written in React and microservices. We are adding additional functionality for new customers. It uses latest and greatest technology and we are expanding it's functionality. We have a small but very energetic team that is really pationate about making it the best call center app in the world.


  • Responsible for developing, coding, unit testing and debugging new highly complex software solutions or enhancements to existing software in a maintenance capacity
  • Analyzes, debugs and/or assists in problem solving in both development and production environments
  • Understands, interprets and translates business requirements into the necessary designs and documentation
  • Assures code quality and adherence to coding standards on projects
  • Takes part in the Agile iterations planning and demonstration sessions


Required skills:

Must have skills:

  • Expert in Web UI Technologies: HTML5, JavaScript, CSS, AJAX, JSON, Mobile and Responsive (min. 3 years of experience)
  • Proven experience in core UI JavaScript concepts including modular and OO design, asynchronous programming, closures, callbacks, prototypes
  • Strong expertise in React.js or Angular.js or Vue.js (min. 3 years of experience)

One of the following:

  • Strong Expertise in RESTful APIs, Node JS, Redux or Flux-based framework, Web UI Development using RESTful services
  • Excellent OO programming skills
  • Experience in building multi-tier applications (user interface, intermediate layer, database)
  • Expert in XML/Web Services (SOAP/REST)
  • Understanding of TDD practices and experience with Unit Testing
    Unit testing, build automation, Continuous Integration
  • Good communication skills - written and verbal
  • Commitment to achieving projects goals and orientation to improve quality
  • Excellent interpersonal skills

Nice to have skills:

  • Experience with JavaScript testing frameworks such as Jasmine, Qunit
  • Experience with build, code package & source code management such as Bower, Yeoman, Grunt, GIT
  • Ability to handle multiple tasks simultaneously
  • Experience in Agile Development


Why it's worth to join Sii?:

  • You will join the Leader. With over 4 000 specialists, Sii is actually the fastest growing, most successful & undisputed number 1 IT & Engineering services company in Poland!
  • You will work on challenging & fascinating international projects run for hundreds of prestigious customers from various sectors & industries
  • We will guarantee you many career development opportunities, facilitated by our Job changer application which allows you to change a project, the area of your activity or a place of work
  • You will cooperate with the best experts in talented & passionate teams on most advanced cutting-edge technologies
  • You will work in Great Place to Work company with amazing atmosphere and authentic values. You will meet new fantastic friends here!
  • We will support your personal dreams and initiatives within Passion Sponsorship Program and Power Volunteers Program
  • We will invite you to awesome integration meetings, interest groups and meetups
  • You will enjoy comfortable, top class, modernly designed offices in the best locations

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