Senior Full-Stack JavaScript Developer (d/f/m) - Mobile App - Remote (CET +/- 2)

Permanent employee, Full-time · Berlin

Why you should say YAS! - where DIGITAL HEALTH meets INSURTECH - we develop digital health preventive services for insurances and companies.

Our Mission: Change Habits! We support users and employees in permanently integrating health-conscious behavior into their everyday lives. We have already successfully positioned ourselves in our target market as several leading insurance companies and their customers are already getting successfully motivated by using our apps. Our success factor: gamification and rewards.

#sayYAS - we are looking forward to working with you!

As a Senior Full-Stack Javascript Developer (d/f/m), you will work within ​our cross-functional team aimed to work with modern JavaScript frameworks like Node.js, and React Native, using GraphQL and Postgres DB. Besides this, you help our users to stay or become healthy by changing their behaviour in a sustainable way. Digital health meets insure-tech.
Your tasks & responsibilities
  • Be part of a young and smart team of Javascript developers.

  • Design and develop hybrid services by using one of the Javascript modern frameworks on both, Backend and Mobile sides.

  • Create new architectures for the services based on Javascript, React Native, GraphQL, and Postgres DB.

  • Migrate existing legacy code to the new microservices architecture.

  • Optimize components and find solutions for maximum performance across devices and browsers.

  • Interact with our backend and mobile development team as well as product owners and UX designers.

  • Advise product owners and stakeholders on the technical feasibility of their ideas.

  • Use Git as a versioning control system and set up, build, and deploy processes via AWS.

Your Profile
  • Bachelors or Master's degree in Computer Science / Engineering or related field, or equivalent professional experience.

  • 3-5 years of experience with our development stack (we use Node js, Typescript, Express JS, React Native, Type GQL, Type ORM, Prisma, Docker, TDD).

  • Experience with Queue and job processing Services like Kafka.

  • A strong grasp and experience with relational databases; including PostgreSQL or MySQL.

  • Creating services around third-party APIs.

  • Experience with debugging, Identifying, and solving reported issues.

  • Knowledge and familiarity with caching strategies and tools.

  • Passionate about clean code architecture, software design, and craftsmanship.

  • Knowledge and familiarity with security and data protection.

  • High motivation, reliability, and independent work style.

  • Fluent English skills and German skills are a plus.

  • If you want to join us remotely, you are working +/- 1 hour away from the CET timezone.

  • The unique opportunity of shaping and developing a digital health startup and becoming part of the Berlin startup world.

  • Working in a company with a purpose: you have an impact on our users' wellbeing, by building a product that helps them to stay active and healthy.

  • Great opportunities for personal development.

  • Working in an open-minded culture with flat hierarchies and an awesome international team with currently 12 nationalities in Berlin-Mitte and remote that shares the vision to positively influence the health of many people.

Your Benefits
  • Agile digital working: based in Berlin we work in a hybrid working model → your workplace is in vibrant Berlin-Mitte as well is the option to work via the mobile office. If you live outside of Berlin, we also offer a fully remote position within +/- 1 hour of the CET timezone.

  • Welcome package

  • Regular team events, on- and offline, e.g. digital coffee breaks or offline running training and events.

  • Support in Relocation and Visa topics

  • Internal Referral program for employees

  • Subsidy for your Urban Sports Club membership and BVG-Ticket (local transport)

  • Loyalty bonus: Extra holiday per year of employment

  • Company pension plan

  • 1 month per year working remotely from outside of Berlin

  • We know what's good! Benefit from versatile discounts from our reward partners through internal extra points for our YAS app.


YAS, we are happy to hear from you. Please share your Github and LinkedIn Profile when sending your application. If possible, please also share work examples to see which projects you worked on. Please also mention your salary range and earliest possible start date.

We are looking forward to getting to know you!

About us develops digital bonus programs for health prevention as a white label solution for insurances and corporates. Based on mobile applications, creates digital touchpoints for healthy insured persons and accompanies them in integrating health-conscious behavior into everyday life. The core product developed by is based on the gamification approach and rewards preventative behavior such as exercise, well-being, and healthy nutrition.

Our Mission: Change Habits!
Your application
Thank you for considering a career at MAGNUM EST Digital Health GmbH. Please fill out the following form. In case you are experiencing problems with the document upload, mail your documents to

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