Backend Engineer ID99040

AgileEngine, LLC.; Barcelona; Hybrid; EUR 50,000 - 90,000; Full time

Benefits offered by this job

Professional growth

Competitive compensation

Exciting projects

Flextime

Job summary

AgileEngine, LLC. in Barcelona seeks a Backend Engineer to scale a high-traffic gaming platform. You’ll build REST/GraphQL APIs in TypeScript/Node.js, design PostgreSQL/MySQL schemas, manage Redis caches, and run analytics with ClickHouse.

Daily you’ll work with AI coding tools, deploy via Docker/Kubernetes, and support launches in a fast-paced startup culture with flexible hours and remote/office options.

Qualifications

• 3+ years of backend development with TypeScript on Node.js.
• Proficient in TypeScript's type system (generics, inference, discriminated unions).
• Schema validation experience with Zod or similar.
• Strong SQL skills in PostgreSQL and/or MySQL: schema design, indexing, migrations on live data.
• Experience running an analytical database at production volume (ClickHouse preferred).
• Experience designing caching: Redis or compatible store; HTTP cache headers.
• Experience designing and consuming REST and GraphQL APIs, including authentication and rate limiting.
• Experience with background jobs and message queues (NATS).
• Experience with high-volume, user-facing production applications.
• Experience taking a product from idea to production.
• Proficiency with agentic AI coding tools (Claude Code, Cursor or similar).
• Comfortable reading/changing React code for frontend features.
• Able to work in startup-paced environment with changing priorities.
• Flexible about working hours (evenings/weekends for launches).
• Passion for gaming.

Responsibilities

• Build and maintain REST and GraphQL APIs in TypeScript (Fastify, Hono).
• Design schemas and write queries for PostgreSQL and MySQL, including versioned game data.
• Run ClickHouse analytics pipelines: logs, materialized views, metrics, dashboards.
• Own cache layers end-to-end: Redis caches, HTTP headers, CDN purges.
• Build and run scheduled jobs and queues (NATS) for data sync, leaderboards, indexing.
• Integrate third-party APIs (Stripe, Discord, Blizzard, IGDB, Steam, YouTube).
• Process game images into tiles/sprites and responsive sizes.
• Keep responses lean for Remix/Next.js to improve TTFB and SEO.
• Work with AI coding agents daily and ensure safe merges (tests, lint rules).
• Deploy through Docker, GitHub Actions and Kubernetes.
• Support high-traffic game launches, including outside regular hours.

Skills

TypeScript

Node.js

REST APIs

GraphQL

PostgreSQL/MySQL

Redis caching

AI coding tools

Tools

Prisma

Drizzle

ClickHouse

Docker

Kubernetes

NATS

Meilisearch

Job description

AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards.

WHY JOIN US

If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you!

ABOUT THE ROLE

We are looking for a Backend Engineer to build and scale the backend of a high-traffic gaming companion platform with over 25 million monthly visits.

The mandatory requirements include 3+ years of backend development with TypeScript on Node.js, strong SQL and caching skills, experience with REST and GraphQL APIs, production-scale applications, daily hands-on use of AI coding tools, and an upper-intermediate English level.

WHAT YOU WILL DO

• Build and maintain REST and GraphQL APIs in TypeScript (Fastify, Hono) for user profiles, subscriptions and game data, including authentication, rate limits and typed contracts.
• Design schemas and write queries for PostgreSQL and MySQL (Prisma, Drizzle), including versioned game data, player builds and migrations on tables in live use.
• Run ClickHouse analytics pipelines: request logs, materialized views, article and revenue metrics, and the queries behind dashboards.
• Own the cache layers end to end: Redis-compatible stores, query caching, tag-invalidated cache, HTTP headers and CDN purges.
• Build and run scheduled jobs and queue consumers (NATS) for game data sync, leaderboards, Meilisearch indexing, sitemaps, Stripe webhooks, payouts and data-deletion requests.
• Integrate third-party APIs (Stripe, Discord, Blizzard, IGDB, Steam, YouTube), handling retries, backoff and rate limits.
• Process game images into map tiles, sprite sheets and responsive image sizes.
• Keep responses lean for Remix and Next.js pages to improve time to first byte, PageSpeed and SEO.
• Work with AI coding agents every day: direct them, review their output, and maintain the guardrails that make their changes safe to merge (tests, lint rules, build checks, agent instructions).
• Deploy through Docker, GitHub Actions and Kubernetes.
• Support high-traffic game launches, including outside regular hours when needed.

MUST HAVES

• 3+ years of backend development with TypeScript on Node.js.
• TypeScript's type system (generics, inference, discriminated unions, narrowing).
• Schema validation experience with Zod or similar.
• Strong SQL skills in PostgreSQL and/or MySQL: schema design, indexing, query plans, migrations on live data, transactions and locking.
• Experience running an analytical database at production volume (ClickHouse preferred; BigQuery, Druid or similar also count).
• Experience designing caching: Redis or a compatible store, invalidation strategies, HTTP cache headers, CDN behavior.
• Experience designing and consuming REST and GraphQL APIs, including authentication and rate limiting.
• Experience with background jobs and message queues, including handling jobs that run twice or don't run at all.
• Experience with high-volume, user-facing production applications.
• Experience taking a product from idea to production.
• Proficiency with agentic AI coding tools (Claude Code, Cursor or similar): daily, hands-on use in a real codebase, and good judgment about when their output needs checking.
• Comfortable reading and changing React code when a feature reaches the frontend.
• Able to work well in a startup-style, fast-paced environment with changing priorities.
• Flexible about working hours: some game launches happen in the evening or on weekends and need coverage outside the standard 9-to-5.
• Passion for gaming.

NICE TO HAVES

• Experience with Bun.
• Experience with any of the current stack: Remix, Next.js, Fastify, Hono, Prisma, Drizzle, Apollo GraphQL, Meilisearch, NATS, Ory, Stripe, Nx.
• shadcn/ui and Tailwind CSS.
• Strict lint setups (typescript-eslint strictTypeChecked, custom lint rules, architecture boundaries).
• Docker, Kubernetes, GitOps (ArgoCD), GitHub Actions, External Secrets.
• Payments and subscriptions (Stripe checkout, webhooks, promotion codes).
• Writing agent instructions, skills or custom tooling for AI coding agents.
• Experience building game tools, such as databases, interactive maps, calculators or planners.

PERKS AND BENEFITS

• Professional growth: Mentorship, TechTalks, and personalized growth roadmaps.
• Competitive compensation: USD-based pay with education, fitness, and team activity budgets.
• Exciting projects: Modern solutions with Fortune 500 and top product companies.
• Flextime: Flexible schedule with remote and office options.

Meet Our Recruitment Process

Each step helps us understand your skills and overall fit.

If it's a match, you'll receive an offer.