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 USIf 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 ROLEWe are looking for a Senior Backend Engineer to build and scale the backend of a high-traffic gaming companion site.The mandatory requirements are 5+ years of backend development with TypeScript on Node.Js, PostgreSQL or MySQL, Redis caching, REST and GraphQL APIs, daily 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- 5+ years of backend development with TypeScript on Node.Js.- Strong command of 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.- Adaptable 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 ProcessEach step helps us understand your skills and overall fit.If it’s a match, you’ll receive an offer.#J-18808-Ljbffr

📌 Senior Backend Engineer Id99040 (Barcelona)
🏢 AgileEngine
📍 Barcelona