
Senior Backend Engineer
AgileEngine
Kraków, MA, Poland • 1m ago • Remote
Senior
Remote
3,520 - 5,120 USD/yr
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Quick Facts
Role: Senior Backend Engineer
Focus: Build and scale backend systems for a high-traffic gaming companion site
Tech emphasis: TypeScript on Node.js, REST/GraphQL, SQL, Redis caching, ClickHouse analytics
Description
Build and maintain backend services for a high-traffic gaming companion site, including REST and GraphQL APIs, database/query design, caching, analytics, and queue-based background processing. You will integrate multiple third-party services, process game media, support SEO and performance for web pages, and work daily with AI coding agents while enforcing safe merge guardrails.
Responsibilities
Build and maintain REST and GraphQL APIs (user profiles, subscriptions, game data), including authentication, rate limits, and typed contracts
Design database schemas and queries for PostgreSQL/MySQL, including versioned game data and live-data migrations
Run ClickHouse analytics pipelines (request logs, materialized views, revenue/article metrics) powering dashboards
Own cache layers end to end using Redis-compatible stores (query caching, tag invalidation, HTTP headers, CDN purges)
Implement scheduled jobs and queue consumers (NATS) for syncing game data, leaderboards, search indexing, sitemaps, webhooks, payouts, and deletion requests
Integrate third-party APIs (e.g., Stripe, Discord, Blizzard, IGDB, Steam, YouTube) with retries, backoff, and rate-limit handling
Process game images into tiles/sprite sheets/responsive sizes
Keep API responses lean for Remix/Next.js pages to improve TTFB, PageSpeed, and SEO
Collaborate with agentic AI coding tools (direct, review output, and enforce tests/lint/build guardrails)
Deploy using Docker, GitHub Actions, and Kubernetes
Support high-traffic launches, including occasional coverage outside standard hours
Requirements
5+ years of backend development with TypeScript on Node.js
Strong command of TypeScript’s type system (generics, inference, discriminated unions, narrowing)
Experience with schema validation using Zod or similar
Strong SQL skills in PostgreSQL and/or MySQL (schema design, indexing, query plans, migrations on live data, transactions/locking)
Production experience with analytical databases at scale (ClickHouse preferred; BigQuery/Druid acceptable)
Experience designing caching with Redis (invalidation strategies, HTTP cache headers, CDN behavior)
Experience with REST and GraphQL API design/consumption (authentication and rate limiting)
Experience with background jobs and message queues (idempotency / handling double-run or missed runs)
Experience with high-volume, user-facing production applications
Experience taking a product from idea to production
Daily, hands-on proficiency with agentic AI coding tools (e.g., Claude Code, Cursor) and strong judgment on when to review/check output
Comfort reading and changing React code when features touch the frontend
Ability to thrive in a fast-paced startup environment with shifting priorities
Flexibility for evenings/weekends during game launches
Passion for gaming
Upper-intermediate English level
Benefits
Growth: mentorship, internal TechTalks, challenging projects, and an annual learning budget
Competitive compensation: regular performance and compensation reviews
Flexibility: 100% remote work with flexible hours and a healthy work rhythm
Meaningful projects: modern technologies with global teams and leading brands
Collaborative culture: supportive environment with minimal micromanagement
Well-being & support: people-focused resources tailored to your location
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