Novakid is an online English school for kids. The Visitor Squad owns the funnel from first visit to paid lesson: landing pages, registration and booking, blog, and the visitor's personal account. We track two key metrics, visitor → lead and visitor → booking, and test almost everything we ship through experiments.
This is a backend-first role: about 70% backend (Python, some Node.js) and 30% frontend (React/TypeScript). You'll own the server side of the funnel: APIs behind registration, booking and the visitor account, attribution, and server-side integrations with ad platforms. When a feature needs frontend work, you'll take it end-to-end yourself. You'll work within the squad's processes: planning, grooming, code review, sprints and releases.
Key Responsibilities
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Design, build and maintain Python services and APIs behind the funnel: registration, booking and the visitor account
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Build and own server-side integrations with ad platforms (Meta CAPI, TikTok Events API and similar): event delivery, deduplication, retries and monitoring
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Own attribution on the backend: end-to-end visit tracking, UTM persistence, and diagnosing gaps in V2L/V2B data
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Keep services fast and reliable: caching, query optimization, debugging server-side rendering in our Node.js/Express layer
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Investigate production incidents through Sentry and see them through to resolution
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Support A/B testing on the server side: feature flags, rollouts, and cleanup after experiments
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Ship frontend changes in React/TypeScript when a feature needs it
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Requirements
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5+ years of production backend development in Python, including services you designed, shipped and supported in production yourself
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Strong backend fundamentals: API design, relational databases and SQL, caching, background jobs, and integrating third-party APIs (auth, rate limits, retries, idempotency)
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Production debugging experience: logs, error tracking, finding the root cause of an issue
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Node.js: comfortable reading and changing an Express service
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Working frontend skills: enough TypeScript and React to deliver a feature end-to-end. Expert level not required.
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An understanding of how tracking data travels from click to report, and the ability to find where it gets lost
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Product mindset: you work with metrics and hypotheses, not just tickets
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Fluent English
Nice to Have
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Server-side conversion tracking (CAPI, Events API, server-side GTM)
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BigQuery: checking your own hypotheses with data
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CDN and edge caching (CloudFront or similar)
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GDPR and consent mechanisms
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E2E testing with Playwright or Cypress
Our Tech Stack
Python, Node.js, Express (SSR), TypeScript, React, Next.js, Sentry, GrowthBook, BigQuery.
What we offer
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Fully remote work
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A chance to shape the future of AI-driven education
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A fun, dynamic team that loves building innovative products
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Unlimited holidays, because we trust you to deliver
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