Javascript Engineer

  • Simplaex GmbH
  • Berlin, Germany
  • 22/06/2020
Full time Data Science Data Engineering Big Data Statistics

Job Description

Simplaex is the company behind the world’s most advanced Artificial Intelligence (AI) -powered targeting technology. The platform provides solutions for the programmatic advertising ecosystem to reduce complexity, create a new kind of transparency, and to boost performance across the full bandwidth of the value chain. Simplaex processes tens of Terra Bytes a day, generates unique insights through machine learning and allows for sub-second querying in a high-throughput and low-latency environment. We are a small, highly talented team (15 people R&D/product and 12 more in business and operations) which was chosen carefully.

The product developed by us is innovative and try to solve the trust gap between advertisers and publishers

The solution is based on the latest technology and required the ability to go behind them and provide an innovative solutions for measurements, segmentation and data unification which are not available today in the market.



  • Develop low-latency, high-scale client side javascript code for Real-Time bidding solutions.
  • Take part in every step of the system development life cycle of our frontend.
  • Work closely with the other team members and brainstorm ideas in an agile and open minded environment that will welcome your inputs with enthusiasm.
  • Have fun working


We are looking for a kick-ass JavaScript Engineer, who cares about quality code and understands the meaning of a true intuitive user experience. She or he is able to deliver a large-scale feature-rich app and browser addons; Is excited to build an amazing AI solution for programmatic publishers. The role involves working with cutting-edge technologies in a large scale distributed system which includes (real!) big data and high throughput environments.


  • At least 5 years of experience with Javascript (aka VanillaJS), browsers and Javascript ecosystem.
  • Familiar with OOP, FP, Design Patterns, Javascript static typingExperience in agile software development, continuous delivery and automated testing.
  • Experience with modern Javascript frameworks (Angular, React, Vue, AngularJS etc.) – an advantage.
  • Experience with server-side web development – an advantage.
  • Independent, fast learner, highly motivated and with strong problem solving skills.
  • Team player, patient and adaptive to changes


At Simplaex we believe in ownership, productivity, mutual respect and freedom to do the things we need to do. Each team member has a large degree of autonomy to accomplish his or her tasks and can rely on others for help, guidance and support. Our team enjoys a highly professional atmosphere and an environment where a good laugh is always welcome.

  • Bright and stylish office in the heart of Berlin.
  • Diverse and international team with over 15 nationalities.
  • Base salary corresponding with experience and responsibilities.
  • Stock options program.
  • 27 days of holiday.
  • Free fruits, snacks, drinks and strong coffee.

To apply for this position, please send your CV and Cover Letter via JOIN