Caspar Health

Senior Fullstack Engineer (all identities)

Berlin, Germany remote Mid Salary not listed
remote Mid level Technology & IT Curated
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About the role

Das erwartet Dich

Caspar Health builds digital rehabilitation products that enable patients to continue their therapy beyond the clinic and help therapists support them more efficiently.

As a Senior Fullstack Engineer in our Healthcare Professionals Squad, you will build and improve the interface therapists use to manage their daily work. Working across our Ruby on Rails backend and React and TypeScript frontend, you will shape solutions with Product and Design and take them from an initial problem through to production.

You will join a cross-functional team of four engineers and a UX/UI Designer. Together, you will improve how healthcare professionals communicate with patients and deliver therapy—while shaping the architecture, reliability and maintainability of the underlying software.

We appreciate your expertise and wish to provide full transparency regarding the compensation range for this role. Your starting salary will be aligned with your qualifications, relevant experience, skill set, and market benchmarks. Remuneration for this position follows our internal salary bands and ranges from €76,000 to €82,000 gross annually (based on a full-time 40-hour work week).

Deine Herausforderungen

In this role, you will:

Learn the workflows supported by our therapist interface, become familiar with our architecture and ship your first improvements during your first three months

Take ownership of larger full-stack features—from shaping requirements with Product and Design to implementation, testing, release and iteration

Build and improve features across our Ruby on Rails backend and React and TypeScript frontend

Make technical implementation decisions about code structure, testing approaches and incremental refactoring

Decide how to break down and deliver work within agreed priorities and engineering standards

Lead technical recommendations for changes affecting shared architecture, other teams or delivery commitments

Improve the therapist experience as well as the reliability and maintainability of the underlying software

Dein Profil

Several years of experience building and operating web applications in production

Strong experience with Ruby on Rails and experience with React and modern TypeScript

Strong understanding of relational databases (PostgreSQL), APIs, and testing

The ability to navigate ambiguous requirements, make sound technical trade-offs and turn problems into maintainable solutions

A product mindset: you seek to understand the intended outcome rather than treating implementation as an isolated task

The judgement and independence to take work from an initial problem through to a production result

Professional working proficiency in English

You do not need to meet every requirement perfectly. If the role interests you and you believe your experience could help us improve the platform, we encourage you to apply.

Warum Caspar Health?

Remote-first with flexible working hours – office optional in Berlin-Mitte or up to 90 days a year outside of Germany

To match this, we support you with a monthly home office allowance and an additional meal subsidy

Plenty of time to recharge – with 30 vacation days per year

Budget for learning & development, conferences, and coaching – tailored to your potential and growth opportunities

High level of ownership and decision-making freedom – no micromanagement. We hire experts who know what they’re doing. #MakeAnImpact!

Genuine collaboration – no silos, no egos. After all, we’re all working toward the same vision. #ValueFocus!

Access to all Caspar offerings for mental and physical well-being #HealthyTogether!

And yes – all the snacks your heart desires, group sports sessions, a never-empty drinks fridge, and a healthy dose of humor are included too

What defines us as a team

We live diversity – it's not a marketing slogan, it's part of our everyday reality

Feedback isn’t a tool – it’s part of our culture

We believe that technology only makes sense when it truly helps people

Our drive is purpose – but our standard is professionalism

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Interview prep

Walk in with sharper answers.

Use this as a quick practice sheet before you speak with the employer.

Mid
Technology & IT Javascript MySQL Remote Collaboration Senior Fullstack Mid level

Likely questions

  1. Tell us about work you have done that is close to the Senior Fullstack Engineer (all identities) role.
  2. How would you approach your first 30 days at Caspar Health?
  3. Which of Javascript, MySQL and Remote Collaboration have you used recently, and what did it help you achieve?
  4. Describe a time you solved a problem without waiting to be told exactly what to do.
  5. How do you stay organised and communicate clearly when working remotely?

Prepare before the call

  • A recent example that proves your experience with Javascript, MySQL and Remote Collaboration.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the Senior Fullstack Engineer (all identities) role because I can bring practical experience in Javascript, MySQL and Remote Collaboration, learn the team quickly, and contribute to the outcomes Caspar Health needs from this hire.

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