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Caspar Health
Caspar Health
51 – 200 Employees
HealthcareHealthcare InsuranceSaaS
Caspar Health is a digital health and SaaS company developing technology-enabled rehabilitation, prevention, and aftercare services. Its platform helps clinics provide personalized digital therapy through an app-based care model, supporting consistent treatment quality and efficient use of medical staff resources. Caspar Health works with a multiprofessional team and operates in the healthcare sector, contributing to the expansion of digital care in Germany and beyond.
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Senior Software Engineer, Healthcare Integrations

Build and operate FHIR, HL7, REST, and CSV integrations for Caspar Health’s digital rehabilitation platform. Connect clinics and software partners through dependable backend services.

DEGermany
€76,000 – €82,000 / year
RemoteFull-timeSeniorGerman RequiredEnglish RequiredFull-stack EngineerSoftware Engineer
AWSCloudPostgresRubyRuby on RailsSQLTypeScript

Description

  • Build and operate healthcare integrations using HL7 v2, REST APIs, FHIR, and CSV imports.
  • Expand backend engineering capacity and connect clinic IT teams and software partners with Caspar Health.
  • Guide integrations from requirements and data mapping through implementation, partner testing, launch, and ongoing support.
  • Maintain existing interfaces, address production issues, and accommodate changes in clinic and partner systems.
  • Create dependable data flows for patient records and therapy schedules.
  • Develop and maintain backend services and versioned APIs with Ruby on Rails and TypeScript.
  • Manage duplicate messages, delayed or out-of-order updates, cancellations, and partial failures with clear retry and reconciliation processes.
  • Improve the developer portal with runnable quickstarts, API documentation, synthetic examples, and troubleshooting advice.
  • Agree on tested interface contracts and repeatable onboarding processes with clinics and software partners.
  • Strengthen automated contract and end-to-end testing, monitoring, and operational runbooks.
  • Share maintenance, support, and expertise through pairing, design discussions, and code reviews.
  • Apply secure authentication, authorization, tenant isolation, and data-handling practices with infrastructure and privacy specialists.

Requirements

  • Have substantial hands-on experience delivering production FHIR integrations, including owning implementation and post-launch troubleshooting.
  • Understand FHIR resources, profiles, implementation guides, identifiers, terminology bindings, extensions, and validation.
  • Have production experience with Ruby on Rails, including maintaining and troubleshooting backend APIs and asynchronous integrations.
  • Have practical experience with AWS infrastructure and cloud service operations.
  • Know healthcare data models, patient and encounter lifecycles, identity matching, and appointment changes.
  • Bring strong SQL and PostgreSQL skills, including data modeling, migrations, and performance-aware queries.
  • Have experience designing secure REST APIs and asynchronous or event-driven integrations.
  • Document clearly and communicate effectively with engineers, product colleagues, and integration partners.
  • Take a collaborative, pragmatic approach.
  • Have strong written and spoken English.
  • Be eligible to work in Germany and live there from the first day.
  • Bring hands-on experience implementing and operating production FHIR integrations; this is required.
  • Note that visa sponsorship and relocation assistance are unavailable.

Benefits

  • Remote-first work with flexible hours.
  • Optional office space in Berlin-Mitte.
  • Work from outside Germany for up to 90 days per year.
  • Monthly home office allowance.
  • Additional meal subsidy.
  • 30 days of annual leave.
  • Learning and development budget for courses, conferences, and coaching.
  • Substantial ownership and autonomy in decision-making.
  • Access to all Caspar offerings for physical and mental well-being.
  • Snacks, group sports sessions, a drinks fridge, and humor.

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