Senior Backend Engineer (m/w/d) – Plattform & Integrationen
Core
Senior Backend Engineer responsible for the business logic, scalability, and robustness of SecureID, a PKI and credential wallet product that turns smartphones into hardware-backed digital identities.
Role type
Senior IC backend engineer (TypeScript/Python)
Builds
SecureID platform including multi-tenant workspaces, credential issuance, door access, and authentication services
Domain
Fintech / Identity Management / PKI
Deliverable
production ML models | product features
Required skills
TypeScript, Node.js, Python, FastAPI, PostgreSQL, API design (REST, OpenAPI), system resilience (retries, idempotency, circuit breakers), observability, CI/CD, GitOps
Preferred skills
Fastify, Drizzle ORM, Zod, Kubernetes, Argo CD, OIDC, OAuth 2.0, SAML, SCIM, PKI fundamentals, X.509
Technologies
TypeScript, Node.js, Fastify, Drizzle ORM, Zod, OpenAPI, Python, FastAPI, PostgreSQL, React, Vite, Tailwind CSS, Flutter, Docker, Kubernetes, Argo CD, Grafana, GitHub Actions, Vitest, Playwright, pytest, Claude Code, Codex
Responsibilities
Architect and evolve the backend system for scalability and stability; implement robustness patterns like retries and rate limiting; define and maintain clean REST APIs; lead technical decisions and code reviews; integrate third-party protocols (OIDC, SAML, SCIM); utilize AI tools for development while maintaining code ownership
Seniority
Senior, hands-on IC
