Full Stack Engineer (Ruby/NodeJS/React) at Babbel (Lesson Nine GmbH) (Berlin, Germany)

 Stack Overflow ·  12.06.2018


Founded in 2007, Babbel is the world’s top-grossing and most effective language-learning app. No small feat, and no small challenge. In a moment rife with talk of walls, we’re building bridges — making the language-learning journey as exciting and empowering as possible, helping people forge new connections and participate in worlds bigger than their own. We do things that matter. And foremost, we make people speak their new language as they’ve always wanted to. Come work with us.

There’s still so much to do.

Babbel is for everyone, not some niche or elite strata of learners. Everyone. As our user base has grown, so has what they need from us. Their learning needs, life experiences, and reference points become more varied and colorful by the day. Meeting that means ensuring users see themselves reflected —not just in our product— but the world it allows them to imagine with us. That means reflecting the dynamism and diversity of our users, as much as possible, in the production of Babbel. We currently have 600 people from more than 50 nationalities working in our Berlin and New York offices, challenging and learning from each other at every step. A culture of difference and dignity is critical to how we’ve connected with millions of users, in every hemisphere

We are looking for a FULLSTACK ENGINEER (Ror) to start immediately in our office in Berlin, Germany!

Your responsibilities will be:


Deliver high quality web applications from designing and iterating new features into production in short sprint cycles

Independently build, maintain and take on ownership of complex software modules and services

Collaborate cross-functionally to inform API design and architectural decisions

Maintain and make use of a good overview of the overall technology stack and infrastructure

Shape, facilitate and survey coding guidelines and quality standards

Manage technical debt

Understand and take ownership the system performance and health

React, troubleshoot and solve operational events (bugs and incidents)

Independently focus on continuous learning and improvement and drive the evolution of our engineering practices


You have:


Experience with JavaScript, HTML and CSS (+preprocessors)

Experience with Ruby (RoR) and/or Node.JS in building web applications

Experience with any component-based frontend framework (ideally React)

Knowledge in building scalable distributed systems and architectures

Knowledge in testing on different levels: unit, integration, contract and E2E

Experience with monitoring systems

Experienced in maintenance of complex code bases and driving down technical debt

Solid understanding of lean and agile practices

Strong communication and interpersonal skills

Fluency in written and spoken English

Nice to have:




Experience in using cloud services (ideally AWS)

Experience with NoSQL databases (ideally AWS DynamoDB)

Experience with any infrastructure as code tool (ideally Terraform)

Basic knowledge of statistics necessary to setup and understand metrics





Why Babbel?

Babbel is the world’s most successful language learning app. Work with us to make a real impact in the world, in a meaningful way.


We’re driven by a bold challenge

We solve meaningful problems - at scale.

Diversity and difference are our strengths; lifelong learning is our life’s blood

Work within a high-performing team at Babbel.

Tackle a steep learning-curve – personally and professionally.

Work in a challenging environment and where you’re expected to bring your game face

Take advantage of a lively startup atmosphere with friendly working hours.

Draw from a vibrant international company with people from over 50 different nationalities.

We offer great company benefits (high-end company bike, fresh fruit & drinks).


Sounds good? We are already looking forward hearing from you! Check out our jobs page, our blog, and our techblog for a fuller picture of #lifeatbabbel!

Questions about a career at Babbel? Get in touch with Tamara Menendez (tmenendez@babbel.com) 




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