Bright futures and promising careers:
Open positions at

We're always looking for creative, dynamic, and committed people to join our team.

It's more than just a job — it's the freedom to create.

Wanted: Reliable team players with a mind for innovative ideas, and motivated individuals with their sights set on producing the best possible result. What we offer: a fantastic working environment and a promising career.
Team spirit
Team spirit
Motivated coworkers, flat hierarchies, and flexible hours.
Whether Mac or PC, laptop or desktop — work with what works for you.
Prime location
Prime location
Modern offices located in Berlin.
Growth potential
Growth potential
Fair pay and the chance to take on real responsibilities.

Available positions (Expert Systems AG)

With 80,000 satisfied customers, is one of Germany's leading providers of online marketing software. Our professional customer review tool enables an ever-growing number of businesses in more than 50 industries to actively boost their online reputation and success. This is made possible each and every day by an amazing team of fun-loving, dedicated individuals. We are a Berlin-based company, and we are proud to have grown to a team which is now 50 persons strong (formerly based in both Berlin and Krakow). We spend our days reaching for the stars, so you can rest assured that things never get boring around here. To help our team keep up with our company's continued growth, we are currently looking to fill 12 positions (male/female/other) at our location in Berlin.


As backend developer (m/f/d), you will be responsible for continued development of our product, as well as guaranteeing scalability and performance. You will implement new features, product updates in PHP and with NoSQL databases (MongoDB), and will be in charge of platform maintenance and upkeep. In our small teams, you will have the freedom to find a niche where you can develop both professionally and personally.

Your profile

  • You have at least two years of experience working as a back-end developer
  • PHP is like a second native language to you
  • You are familiar with modern version control (git), NoSQL databases (MongoDB), and the Linux console
  • You are well-versed in MVC (e.g. Zend, Symfony)
  • You love a good challenge and enjoy finding creative solutions to problems
  • You are a team player, can work independently, and strive to achieve high-quality work
  • Nice to have: Knowledge of JavaScript, HTML5, CSS3, nodejs, grunt

What we offer

  • You have the opportunity to take over responsibility, develop yourself technically and personally and to try things out.
  • A great team of PHP freaks, creatives, database tamers, social media junkies, and concept gurus
  • Newly furnished, modern offices, and small team sizes
  • You choose your hardware, which suits you best (PC/ Mac and desktop/notebook)
  • Work-Life balance is important for us - we care about correct time recording (no overtime) and offer free Yoga courses.
  • And last but not least: attractive pay, regular team events, parties, fresh fruit, and all-you-can drink coffee

Sound like the right fit for you? Then send your complete application with your earliest availability to start, salary expectations and a sample of your best work to We are looking forward to hearing from you.

Questions? We're here to help!

Interested in a future career at ProvenExpert? Send a message to Hoang Long Nguyen via the contact form below, or send an email to
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