Frontend Developer with React Sofia, Bulgaria

Jij bent

You are

  • A driven individual with a very good understanding of React, JavaScript, and its frontend libraries  
  • A real completer finisher that always aims for going the extra mile 
  • Sharp minded individual that can frequently switch the context that they work in
Jij krijgt

You'll get

  • A stimulating and dynamic work environment 
  • Plenty of possibilities to develop your professional and personal skills
  • A fantastic and international team 
Soort projecten

Your Tasks

  • Based on user stories, work with multiple development teams to define, design, and implement solutions with React & JavaScript
  • Support and improve the existing functionality of the product.

Are you a person that likes to develop new software but at the same time you enjoy to improve and support the existing functionalities of products? Do you like to work with Agile/ Scrum methodologies? This is the right place for you!

In Sentia we focus on smart solutions and we are hungry for more, all of the team members love to learn everything about new technologies and discussing this during team meetings, lunch, beer, and pizza sessions.

As a frontend developer within Sentia Services, you will have to feel comfortable with frequent context switches, as you will be working on multiple projects in a planned way. You will support your colleagues from two different teams under one manager. One of the team takes care of an in-house developed and maintained synthetic end-user monitoring solution. The other one is a newly formed team within the organisation that will work towards developing an automated solution that will help our AWS consultants and operations teams boost their efficiency. As the frontend expert, you would need to cooperate with both teams in order to achieve the high-quality standards of both products. 

You will have the chance to be a part of a newly formed team dedicated to product development in Sentia Service. 

What do we offer?

It’s important to us that you can develop yourself to the fullest at Sentia and we will do everything we can to provide that opportunity. You will find yourself working in a pleasant environment, alongside driven colleagues. In addition, you can expect the following:

  • uren per week

    Flexible working hours

  • laptop telefoon en reiskosten

    A competitive salary

  • persoonlijk opleidingsbudget

    Food vouchers, sports card and a health insurance that includes dental & vision care

  • Self-development

    Plenty of opportunities for growth, both personally and professional. Certification possibilities

  • teamsamenstelling

    Working alongside great colleagues across Bulgaria & the Netherlands

  • vakantiedagen

    20 vacation days

  • Soort projecten

    Dell business laptop & personal business phone

  • Type klanten

    Fun drinks and parties with your colleagues

The most successful developer for the role has:

  • Minimum 6 years of experience
  • To stay up to date with the newest technologies 
  • Proficiency in visual design and wire-framing tools 
  • Demonstrable UI/UX design skills with a portfolio 
  • Experience in creating wireframes, storyboards, user flows, and process flows
  • Tech stack consisting of the must-haves:
    • React
    • CI/CD: Git
    • CSS3 (SASS / LESS)
    • JavaScript
    • JavaScript front-end tools (at least one of the following)
      • npm
      • Webpack
      • react-scripts
      • Grunt
      • bower
  • Experience with / knowledge of:
    • AWS services
    • JSON based REST services
    • Responsive web design techniques and cross-browser compatibility
  • Tech stack of nice to have:
    • Typescript
    • JavaScript frameworks: AngularJS
    • Design components: Material UI
    • Testing frameworks: Jest, Karma
    • Bitbucket, Jenkins, Sonar
    • Jira, Confluence
    • Scrum and Kanban
    • Mobile (iOS and Android) applications development (extra points for React Native)



If you are interested in applying or would like more information, contact Miryana Dorosieva via or call +359 (0)894 595 880. If you know someone who might be interested, please share this vacancy via the links below.    

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What can you expect after pushing the apply button? We follow some steps. They can differ from time to time due covid or other circumstances. But in general you can follow this guideline to become a true Sentian as soon as possible. We're looking forward to it!

  • Positivity

    You've applied, great. We will check your profile for the best match

  • report

    We will give you a call to arrange the first interview (hopefully at the office)

  • Listen first

    Everything goes well? We will arrange a technical interview during which you will show/explain your portfolio

  • Self-development

    We will invite you to spend some time with the team so both you and them can feel the vibe

  • Expressroute 2

    Everything still great? Then you will receive an offer matching your skills, experience and is in line with your colleagues

  • Agility

    You have accepted the offer. Great, let's start with your onboarding

  • Positivity

    Your first day. We give you a warm welcome and your team lead is right there for you!


On your first day at work in Sentia Services, we will provide you with detailed information about the company, history, vision, teams, leading principles, and processes. Health & Safety at the workplace is also an important part of the onboarding process.

After going through this you will start with a job kick-off. The team manager will provide an introduction of who the team is, what they do, and how they do it. You will receive a reference card which will include all the tools needed, where to find what & whom to ask, which will be discussed with the manager. 

Then you would go on an exploration - setting your computer, installing all the tools, logging into the online ones, and getting to know your team members. 

In the first few weeks, you can also expect meetings with many different colleagues. The product owner and other developers from the team will discuss with you the product vision, technical challenges, and what has been done so far. 

About Sentia

We are one of the fastest-growing IT service providers in northwest Europe, with a 100% focus on our Cloud-First strategy. With over 600 employees, we are impossible to miss. From our offices in Bulgaria, Belgium, the Netherlands, and Denmark we work hard on what drives us: state-of-the-art IT infrastructure for our customers.

At Sentia, you get all the space you need to develop your talents. We are convinced that you can only lead the way by continuing to develop yourself. That’s why we do everything we can to constantly innovate with you in both technology and your personal skills. 

Our Sentian Values



We regularly leave our comfort zone.

We challenge ourselves more than Sentia challenges us.

We have realistic views of our skills and always look for ways to improve.

We accept mistakes, but we strive for zero repeats.

Always transparent


We communicate clearly, concisely and often.

We share our thoughts and concerns immediately with honesty.

We don’t make assumptions, we rather ask that extra question.

We don’t rely on emails alone for perfect communication

Listen first

Listen first

We focus on listening rather than responding.

We take the approach that everything is a hypothesis and we could be wrong.

Internally we also listen. If you have an idea or a problem; we are here for you.

We understand first before we try to be understood

Extreme Ownership

Extreme Ownership

We do what we say and say what we do (and don’t do).

We take ownership, always willing to go the extra (s)mile.

We are accountable and document our work (and time).

We strive to exceed expectations (of customers, team members, partners).



We don’t speak negatively about colleagues or customers.

We look at the upside first when change presents itself.

We don’t complain, but there’s always room to share our concerns.

We never miss an opportunity to give positive feedback.

Join the lead generation

We welcome new talent as a part of our cloud journey. Start the next step in your career and send us your application. Don't follow the path, lead the way.