Middle/Senior Front End Developer

Middle/Senior Front End Developer
Hi! I'm so glad you clicked on this position. We are in the race for video streaming software development. Let's win this Grand Prix together!

Middle/Senior Front End Developer – The Driver

In Proffiz’s Formula 1 Front End Developer is a driver who helps win titles. You will be a part of a global business that helps customers to diagnose and resolve issues with their phone lines. You are going to be an important team player, and your own success is the success of the whole crew!

Who is on the Pit Wall

Our client is one of Ireland’s fastest-growing tech companies (Deloitte Fast 50 award winners for the last 8 consecutive years), the world’s largest toll and toll-free number testing provider and also the world’s most advanced WebRTC testing, monitoring and support solutions provider. This product is used by such world leading organizations as Google, MasterCard, Avaya, Zoom etc.

🏎 The Race 🏎 

Our customer pairs useful technology with helpful people, so clients can move from reactive to proactive, stressed out to stress free.

The client proactively monitors toll and toll-free numbers globally, optimizes customer experience and communications leading to business growth, and enables customers and telecommunications service providers to test connectivity and quality on their global telecoms network.

With a growing global network, the data gathered by this product allows companies to greatly reduce downtime and improve their customer experience.

The main tasks performed by this platform:

> Easily identify call quality issues

> Address call quality with confidence

> Troubleshoot and fix issues faster

It’s all about making people’s lives as business owners much easier.

If you are passionate about software development, eager to learn about cutting-edge technologies, display a keen interest in delivering quality software and want to take the next step in your career, don’t miss the chance to join!

Your driving experience

> Extensive hands-on experience with JavaScript and React framework, at least 3 years

> In-depth understanding of fundamental web technologies such as HTTP, HTML, CSS, AJAX, REST, and JSON

> Strong knowledge with HTML5, CSS3, Flexbox, CSS Grid, Responsive Design

> Proficiency in consuming RESTful services

> Good experience writing Unit Tests.

> English level at least upper-intermediate

Will be a plus:

> Good knowledge of code versioning using Git

> Understanding of Docker

The Crew

The project started in 2003 and has grown to about 150 employees.

You will be part of a great international team of experts, including PHP, Javascript, Vue.js, Nodejs, and DevOps engineers.


The race begins with a warm-up lap – you may call it –  onboarding. During the warm-up lap, you meet the HR-manager who solves various organizational questions, guides you to the office, adds you to internal communication channels, provides you with the needed equipment, etc. Then meet the client, the team, drink a cup of tea or coffee and start exploring the project.

After a warm-up lap, you are ready to the race in which you should:

> Build cross-platform apps using Javascript, React and other fit-for-purpose technologies

> Create responsive web interfaces with HTML, CSS3, Bootstrap

> Take part in creating the web architecture for new projects

> Use Docker containers to isolate and scale processes on demand

>  Offer support, especially when teammates are faced with new challenges

>  Provide guidance and advice on best practises and future technologies

>  Participate in code reviews

You will have the opportunity to enjoy the fun of development from scratch in some application components while adhering to the company engineering standards, frameworks, and best practices.

The driver assessment 

> HR Interview (30 minutes)

> Technical interview (30-40 minutes)

>  Client interview (1-1,5 hours)

Let us know if you require any accommodations for the interview process, and we`ll do our best to assist.


> Stock options: you own a part of the client’s company

> A learning budget as a % of your annual salary

> Flexible working hours

> You can work remotely, from the office, or mix both

> Spacious technically equipped workplace

> Regular Performance Appraisals

> Free English courses

> Medical Insurance

> Access to online courses

> Corporate events, tech talks and so on

Ready, Steady, Go!)


Personal Recruiter
Khrystyna Volos
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      Where are we?
      Proffiz is your reliable software vendor based in Europe, that develops great products for companies across the world
      Talk to us and get your project moving

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        • We will respond to you within 24 hours
        • We’ll sign an NDA if requested
        • You'll be talking to product and tech experts (no account managers)

        14 Uhorska st., building 3, 79034, Lviv, Ukraine
        ul.Podole 60, 30-394 Kraków, Poland
        Engstraat 3, 5256 BD Heusden, Netherlands

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