• Зараз переглядає 1 шукач

Backend Engineer

  • 120 000 – 140 000 грн Вища за середню
  • Ковальчук Л.М., ФОП

    IT
  • Дистанційна робота
  • Леонід Ковальчук
  • Повна зайнятість. Досвід роботи від 5 років.
  • JavaScript
  • PostgreSQL
  • Відповідальність
  • Node.js
  • Unity
  • REST
  • AWS
  • Backend-розробка
  • NestJS
  • Google Cloud Platform
  • UX-дизайн
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Опис вакансії

Backend Engineer (Location-Based Mobile Game / AR)

About the Project

We are building a location-based mobile game where users purchase keys to hunt and open real-world chests using their phone camera.

Each chest can be opened only once globally, which makes backend logic, geo-queries, and data integrity critical.

This is an early-stage MVP with clear scope, fast decisions, and direct access to the product owner.

Responsibilities

  • Design and implement backend architecture for the MVP
  • Build REST APIs for:
    • user profiles & authentication
    • keys inventory & balance
    • geo-based chest discovery
    • chest opening (atomic, server-authoritative)
    • town-based statistics & leaderboard
  • Design PostgreSQL schema with geospatial queries (PostGIS)
  • Implement anti-cheat logic:
    • distance validation
    • speed / teleport detection
    • race-condition protection (two users opening same chest)
  • Integrate Apple / Google sign-in
  • Support in-app purchase receipt validation (keys)
  • Work closely with Unity developer to define clean API contracts

Technical Requirements (Must Have)

  • 4+ years of backend development experience
  • Strong knowledge of PostgreSQL
  • Experience designing REST APIs
  • Understanding of transactional systems & data consistency
  • Experience with Node.js (NestJS) or Go
  • Familiarity with authentication flows (OAuth)
  • Ability to work independently and make technical decisions

Nice to Have

  • Experience with PostGIS or geo-based queries
  • Experience with mobile games or high-concurrency systems
  • Understanding of anti-fraud / anti-cheat patterns
  • Experience with cloud deployment (AWS / GCP / similar)

What This Is NOT

  • This is not a large corporate project
  • No heavy bureaucracy
  • No 10-layer approval process
  • You will not «just implement tickets» — you will shape the system

Engagement Format

  • Full-time preferred
  • Remote
  • Direct communication with founder / product owner

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