Backend Engineer (m/f/x)
Core
Building robust and scalable technology platforms, systems, and APIs for an online booking platform serving tens of thousands of daily users.
Role type
Senior Backend Engineer
Builds
Platform Services and Booking Systems, transactional API platform
Domain
Travel technology, Event booking
Deliverable
production ML models
Required skills
PHP, OOP, SQL, relational databases, Linux/macOS command line, AI agents (Claude/Codex), API development, Service-Oriented Architectures
Preferred skills
Message queues, Elasticsearch, German language
Technologies
PHP, SQL, Linux, macOS, Elasticsearch, Claude, Codex
Responsibilities
Designing and maintaining a robust transactional API platform, building and extending platform services and booking systems, applying AI-assisted development to everyday tasks, addressing bugs and performance issues, participating in code reviews and pair programming
Seniority
Senior, hands-on IC (via careerplan.io/jobs/13635-a45c0b50_JB5250804-S-backend-engineer-mfx-at-travelcircus-gmbh)
