Senior Front-end Developer

Greentube Slovakia s.r.o.

Place of work
Laurinská, Bratislava
Contract type
Start date
Wage (gross)
From 2 000 EUR/monthThe salary is the subject of the agreement and depends on the experience and skills of the candidate.

Information about the position

Job description, responsibilities and duties

We are looking for an experienced and driven Front-end Developer to join our Conversion Rate Optimization team in Bratislava, Slovakia. You will work on a multitude of industry leading and emerging online casino brands for web . You will turn concepts into A/B or multivariate tests to beat our original versions. You will be reporting to the Lead of the Conversion Rate Optimization team located in Vienna, Austria.

Your responsibilities
• Help to measurably improve our online casino experiences
• Work closely with stakeholders to turn requirements, concepts and ideas into testable and reliable experiments in the form of HTML/CSS/JS code
• Ensure flawless tracking of an experiment’s success metrics and custom events
• Achieve high quality experiments and share your knowledge by collaborating with other developers and testers (code reviews, pair programming)
• Shape our front-end development environment in ways you deem necessary to deliver code effectively and efficiently
• Challenge, critique and contribute to current conversion rate optimization projects
• Lead discussions relative to the future direction of front-end development practices related to our conversion rate optimization efforts

Employee perks, benefits

• Possibility of occasional home-office
• Flexible working hours
• Team-building
• Fruit, coffee, tea available in the office
• Informal and relaxed work environment

Information about the selection process

Candidates who meet the basic requirements according to the submitted CV will be invited for a personal interview (or Skype / Teams call)

Requirements for the employee

Candidates with education suit the position

Secondary with school-leaving examination
Follow-up/Higher Professional Education
University student
University education (Bachelor's degree)
University education (Master's degree)
Postgraduate (Doctorate)

Language skills

English - Advanced (C1)

Other knowledge

SQL - basic
JavaScript - expert
CSS - expert
HTML - expert

The position is suitable for a fresh graduate


Personality requirements and skills

• 5+ years of experience in developing real world web projects in cross-functional teams
• Proficiency in HTML, CSS, JavaScript (including Angular, Vanilla JS, ES6+)
• Experience integrating with Google Analytics / Google Tag Manager or similar products
• You identify with a build, measure & learn mindset
• Excellent communication, presentation and organizational skills with a strong work ethic
• Proficiency in our company language English to communicate with stakeholders in Greentube offices across Europe (Austria, Slovakia, UK, Malta)
• Experience implementing A/B or multivariate tests with tools such as Maxymiser, Optimizely, or Google Optimize is a plus
• Intermediate understanding of statistics (mean vs. average, statistical variance, etc.) is a plus


Brief description of the company

Greentube Slovakia is Greentube’s mobile branch and the industry’s first choice in providing B2B companies with casino games that run seamlessly on all platforms (desktop and mobile). Strong HTML5 competencies are the hallmark of this company: Greentube Slovakia is among the best of the best when it comes to transforming the famous games of the NOVOMATIC Group into high-quality mobile solutions. Players are eager to take their games with them wherever they might go, from the daily commute to a night out with friends, and Greentube Slovakia continuously delivers!

Number of employees

25-49 employees

Company address

Greentube Slovakia s.r.o.
Laurinská 18, Greentube Slovakia s.r.o.
81101 Bratislava
ID: 3999254  Posting date: 19.1.2021  Basic salary component (gross): 2 000 EUR/month