Backend Engineer(TypeScript / NodeJS)
We are seeking a skilled Backend Engineer with 7+year experience to join our engineering team and build robust, scalable, and high-performance backend systems. This role involves designing and implementing server-side applications, APIs, and infrastructure that power our products and services.
Your mission
System Design & Architecture
Design and implement scalable backend architectures
Build and maintain RESTful APIs
Optimize database queries and data structures
Implement performance optimizations and caching strategies
Development & Implementation
Write clean, maintainable, and efficient code
Develop and integrate third-party APIs and services
Implement authentication and authorization systems
Build data processing pipelines and background jobs
Database Management
Design and optimize database schemas
Implement data migration strategies
Ensure data consistency and integrity
Monitor and optimize database performance
Infrastructure
Deploy and manage applications in cloud environments
Implement CI/CD pipelines and automated testing
Monitor system performance and troubleshoot issues
Ensure security best practices and compliance
Collaboration & Quality
Work closely with frontend developers, product managers, and designers
Participate in code reviews and maintain code quality standards
Write comprehensive technical documentation
Your background
Education & Experience
Bachelor's degree in Computer Science, Software Engineering, or related field OR equivalent work experience with a strong technical portfolio
7+ years of backend development experience
Experience with testing frameworks (unit, integration, end-to-end)
Experience with performance testing and optimization
Technical Skills
Programming Languages: TypeScript/JavaScript, Node.js (primary stack)
Web Frameworks: Express.js, React (for full-stack capabilities)
Databases: MongoDB (primary), Redis for caching
Cloud Platforms: AWS, GCP
Containerization: Docker, Kubernetes (K8s)
Version Control: Git, GitHub/GitLab
System Design & Architecture
Understanding of distributed systems concepts
Knowledge of caching strategies (Redis, Memcached)
Experience with message queues (RabbitMQ, Apache Kafka)
Understanding of load balancing and scaling strategies
API Development
Experience designing and implementing RESTful APIs
Understanding of API security and authentication (JWT, OAuth)
Experience with API documentation tools (Swagger, Postman)
Soft Skills
Strong problem-solving and analytical abilities
Excellent debugging and troubleshooting skills
Good communication and teamwork abilities
Ability to work in agile development environments
Preferred Qualifications
Experience with event-driven architecture
Experience with monitoring and logging tools (ELK stack, Prometheus, Grafana)
Knowledge of machine learning integration and data pipelines
Familiarity with search engines (Elasticsearch, Solr)
Mobile Development: React Native, Expo (bonus for cross-platform understanding)
Please note that you must have the legal right to live and work in the European Union (EU). Applications from candidates residing outside the EU cannot be considered.
Why us?
Top Tech company in Digital Health: A dynamic, high-growth environment where everyone in the team depends on each other's performance. You can see your impact. We learn and develop quickly.
True impact in healthcare: What we are building with our brite platform is unique worldwide, ambitious, and could have a huge impact on billions of people who are ill or interested in health.
International team: We are 14 nationalities working across Europe. We bring different mentalities and cultures with us, but we are all aligned towards our grand vision.
100% remote with best IT equipment: We work 100% remotely, meet regularly for special team events and team offsite weeks, for example, in Tuscany, the Alps, or Mallorca. You will receive a Mac computer so that you are already technically up to speed.
Hiring Process
Initial Screening: Technical phone/video introductory and experience call.
Leadership Interview: Discussion focused on leadership principles, values, and cultural fit.
Technical Deep Dive: Architecture patterns, database design and live coding session covering Node.js.
Published on: 1/15/2026

XO Life
XO Life is recognized as a leading Digital Health Scaleup in Germany and Europe and a top tech newcomer by the German Federal Ministry of Economics and Technology. We work with 30+ pharma manufacturers, spanning from market leaders, SMEs, and RX, OTC, and Medical Device manufacturers across over 30 indications. Building on this success, we're also expanding the platform internationally.
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