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JavaScript Engineer

We're hiring!

About Us

Simplaex is the company behind the world’s most advanced Artificial Intelligence-powered platform 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 Terabytes a day, generates unique insights through machine learning and allows for sub-second querying in a high-throughput and low-latency environment.

About You

We are looking for a passionate JavaScript Engineer who is able to deliver high quality client-side applications with and without JS frameworks. The candidate is excited to build an innovative product for digital publishers to dynamically manage their ad-inventory. The role involves working with cutting-edge technologies in a large scale distributed system which runs on millions of user devices and is integrated with high throughput environments.


  • Develop low-latency, high-scale client side javascript code for Real-Time ad monetization solutions

  • Develop React Single Page Applications

  • Take part in every step of the development life cycle of our client-side applications

  • 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 :)


  • At least 3 years of experience with Javascript (aka VanillaJS), browser APIs, Javascript ecosystem and automated testing

  • Familiar with OOP, FP, Design Patterns, Javascript static typing

  • Experience in agile software development, continuous delivery

  • Experience with modern Javascript frameworks (React, Angular, Vue)

  • Experience with server-side web development – an advantage

  • Independent, fast learner, highly motivated and with strong problem solving skills

  • Team player, proactive, patient and adaptive to changes

What we offer you

  • A job that provides freedom, flexibility, responsibility and impact

  • Professional atmosphere and a fun environment

  • Virtual share options

  • Home office budget to help you set up your workspace at home

  • Personal development budget

  • Bright and stylish office in the heart of Berlin

  • Diverse and international team with over 15 nationalities

  • Free fruits, snacks, drinks and strong coffee

  • and much more!

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