About us We’re just 1 year old, already 40 people, and growing quickly. Our slot games are played by more than 1 million people every month, and this is only the beginning.
What we do Each spin passes through our backend: the game math decides the outcome, a transaction moves the balance, promo features kick in, and analytics records it. It all has to be correct, fast and ready for traffic that keeps growing, so we keep p95 low and stable under any load.
What you’ll work on
The rebuild: design new Nest.js services from scratch, with no legacy to patch, and move traffic over without downtime
Transactions: idempotent, consistent operations that stay safe under heavy concurrency, so no spin is lost or counted twice
Integrations: third-party APIs from operators and aggregators, built so outside failures never break a spin
Promo features: real-time tournaments and leaderboards for thousands of players at once
Analytics: event pipelines into ClickHouse
Performance: keep p95 and p99 low as traffic grows by profiling Node, tuning Postgres and Redis, and planning capacity on Kubernetes
On-call: you own what you build, so it’s only fair to take part in our shared on-call rotation
What we’re looking for
5+ years of production Node.js and TypeScript, with solid hands-on Nest.js experience
Experience designing services from scratch with clean, maintainable architecture
Experience with systems where correctness matters (payments, wallets, ledgers): transactions, locking, idempotency
Deep Postgres knowledge: indexes, query plans, isolation levels, autovacuum tuning, live migrations
Redis in production beyond caching (leaderboards, rate limiting, distributed locks)
Confidence running and debugging services on Kubernetes
It’s a plus if you’ve:
Migrated a live system to a new architecture
Built GraphQL APIs
Worked with ClickHouse or another columnar database
Built event-driven systems with Kafka, NATS or similar
Set up observability with OpenTelemetry, plus Grafana dashboards and alerts
How we work with AI We’re AI-first: AI is part of everything we do, from design to code review. A premium Claude subscription is on us, and we keep going deeper. What doesn’t change is ownership: AI writes the code, but people stand behind it.
What we offer
Competitive salary in USD
20 days of paid vacation, 15 sick days, and your birthday off
Remote work or our office in Barcelona
9:00–18:00 or 10:00–19:00 CET, your choice
Freedom to make architecture decisions, with real ownership of the results
Zero bureaucracy and direct access to the CTO
Summer and winter gatherings that bring the whole team together from all over Europe
How we hire
30-minute screening call with our recruiter
60-minute technical interview on real backend problems, no algorithm puzzles
30-minute final interview with the CTO
Feedback at every stage, whatever the outcome.
To apply: send your CV plus a few lines about a system you built where correctness or scale really mattered.
