Python Backend Developer, Fullstack-capable

• Design, build and maintain Python services and APIs behind registration, booking and the visitor account
• Build and own server-side integrations with ad platforms, including Meta CAPI and TikTok Events API
• Implement event delivery, deduplication, retries and monitoring
• Own backend attribution, including end-to-end visit tracking, UTM persistence and diagnosing gaps in V2L/V2B data
• Improve service performance and reliability through caching, query optimization and debugging server-side rendering in the Node.js/Express layer
• Investigate production incidents through Sentry and resolve them
• Support server-side A/B testing through feature flags, rollouts and experiment cleanup
• Ship frontend changes in React/TypeScript when needed
• Participate in planning, grooming, code review, sprints and releases

• 5+ years of production backend development in Python, including services you designed, shipped and supported in production yourself
• Strong backend fundamentals: API design, relational databases and SQL, caching, background jobs, and integrating third-party APIs (auth, rate limits, retries, idempotency)
• Production debugging experience: logs, error tracking, finding the root cause of an issue
• Node.js: comfortable reading and changing an Express service
• Working frontend skills: enough TypeScript and React to deliver a feature end-to-end; expert level not required
• Understanding of how tracking data travels from click to report, and ability to find where it gets lost
• Product mindset: working with metrics and hypotheses, not just tickets
• Fluent English
• Nice to have: server-side conversion tracking (CAPI, Events API, server-side GTM)
• Nice to have: BigQuery
• Nice to have: CDN and edge caching (CloudFront or similar)
• Nice to have: GDPR and consent mechanisms
• Nice to have: E2E testing with Playwright or Cypress

• Fully remote work
• A chance to shape the future of AI-driven education
• A fun, dynamic team that loves building innovative products
• Unlimited holidays, because we trust you to deliver