Python Backend Developer, Fullstack-capable

This is a fully remote position, open to applicants in Serbia.

📋 Description

• Design, develop, and maintain Python services and APIs for registration, booking, and visitor accounts.

• Build and manage server-side integrations with advertising platforms, such as Meta CAPI and TikTok Events API.

• Implement event delivery mechanisms, including deduplication, retries, and monitoring systems.

• Take charge of backend attribution, ensuring comprehensive visit tracking, UTM persistence, and identifying gaps in V2L/V2B data.

• Enhance service performance and reliability by utilizing caching, optimizing queries, and troubleshooting server-side rendering within the Node.js/Express framework.

• Investigate production incidents using Sentry and provide resolutions.

• Facilitate server-side A/B testing through feature flags, rollouts, and experiment cleanup.

• Deploy frontend updates in React/TypeScript as required.

• Engage in planning, grooming, code reviews, sprints, and release cycles.

⛳️ Requirements

• Over 5 years of experience in production backend development using Python, including services you have designed, launched, and supported in a live environment.

• Solid understanding of backend principles: API design, relational databases and SQL, caching, background tasks, and third-party API integrations (authentication, rate limits, retries, idempotency).

• Experience in production debugging: analyzing logs, tracking errors, and identifying root causes of issues.

• Proficient in Node.js, with the ability to read and modify an Express service.

• Basic frontend skills: sufficient TypeScript and React knowledge to deliver features end-to-end; expert-level proficiency is not necessary.

• Comprehension of how tracking data flows from click to report, and the capability to identify where data loss occurs.

• Product-oriented mindset: working with metrics and hypotheses, rather than simply addressing tickets.

• Proficient in English.

• Nice to have: experience with server-side conversion tracking (CAPI, Events API, server-side GTM).

• Nice to have: familiarity with BigQuery.

• Nice to have: experience with CDN and edge caching (CloudFront or similar).

• Nice to have: understanding of GDPR and consent management mechanisms.

• Nice to have: experience in end-to-end testing with Playwright or Cypress.

🏝️ Benefits

• Fully remote work opportunity.

• An opportunity to influence the future of AI-driven education.

• A vibrant, dynamic team passionate about building innovative products.

• Unlimited vacation days, as we trust you to deliver results.