Hybrid Technical Lead – Backend, Node.js, TypeScript

at keleya digital-health solutions

• Job title: Technical Lead – Backend, Node.js, TypeScript
• Job type: Full Time
• Experience level: Senior
• Salary: Not specified
• Degree requirement: Bachelor's Degree
• Tech skills: AWS, Cloud, JavaScript, Node.js, React, React Native, Terraform, TypeScript
• Location requirements: Hybrid, Berlin, Germany

About the role

• Technical Lead responsible for backend architecture at a digital health startup. Leading infrastructure automation and mentoring engineers in TypeScript and Node.js.

Responsibilities

• Own and evolve backend & cloud architecture – Design, build, and operate scalable, reliable backend systems using Node.js/TypeScript on AWS, ensuring best practices across infrastructure, security, and performance.
• Lead infrastructure automation and delivery excellence – Drive the transition to Infrastructure as Code (Terraform) and optimize CI/CD pipelines (GitHub Actions) to enable fast, safe, and repeatable deployments.
• Provide technical leadership and cross-functional guidance – Mentor backend engineers, uphold high code quality standards, and clearly communicate architectural trade-offs to product, frontend, and non-technical stakeholders.
• Success in the first 6 months looks like: Infrastructure Health & Optimization: Conduct a comprehensive audit of our AWS environment to identify opportunities for scalability, cost-efficiency, and security improvements. Modernization: Creation of a roadmap to migrate core infrastructure to a manageable 'Infrastructure as Code' stack. Delivery & Mentorship: actively leading the technical delivery of key product features while mentoring the backend team on code quality.

Requirements

• AWS Cloud Infrastructure: Proficiency with managing core services (VPC, RDS, ECS, S3) following industry best practices.
• Infrastructure as Code (IaC): Proven experience with tools like Terraform to lead our transition from manual setup to automated, reproducible infrastructure.
• Backend Architecture: Deep experience designing reliable, scalable applications using TypeScript and Node.js.
• CI/CD Automation: Experience optimizing build and deploy pipelines (specifically GitHub Actions).
• Communication: Ability to explain complex architectural trade-offs to non-technical stakeholders clearly.
• Nice To Have: ISO27001 Experience: Familiarity with security controls and compliance standards.
• React/Frontend Awareness: Ability to understand the needs of our Web and Mobile (React Native) developers.
• German language skills are a plus.

Benefits

• Opportunity to work on meaningful digital health solutions impacting lives globally
• Flexible working arrangements and a supportive team environment
• Professional growth opportunities through learning and mentorship programs
• Competitive salary and benefits package
• Hybrid work model from home and at our office in Berlin-Mitte
• 3 months remote work from anywhere in the world per year
• 30 vacation days
• Urban sports club membership