At Group-IB, we build high-load backend services that power our products in fraud protection, threat intelligence, and digital risk prevention. Our engineering teams work on complex, data-heavy systems that collect, process, and serve large volumes of data in real time to help customers prevent and investigate cyber incidents.We don’t believe in siloed responsibilities — developers own their features end-to-end: from clarifying requirements and writing code with tests to deploying it, monitoring performance, and maintaining it in production.We’re looking for a strong backend engineer who enjoys solving engineering challenges at scale and is ready to take full ownership of their work.Tech stack:Golang (primary language);
Postgre SQL, Redis, Elasticsearch, Cassandra;
Rabbit MQ, Kafka, NATS;
G RPC;
Kubernetes;
S3-compatible object storage.Tasks to solve:You’ll join one of our cross-functional backend teams working on:Designing and implementing new product features and APIs;
Building integrations with third-party data sources;
Increasing the share of Golang services;
Improving performance and scalability (query optimizations, sharding, etc.);




Integrating services across the Group-IB product ecosystem;
Developing and maintaining internal platforms used across teams.The scope is broad — engineers are free to rotate between task types and product areas depending on interest and team needs.This role is perfect for you if:5+ years of professional experience with Golang;
other languages is a plus;
Strong sense of ownership and a product mindset;
Solid knowledge of SQL and experience with Postgre SQL or similar;
Comfort working in Linuxenvironments;
Experience developing production-grade systems and APIs;
English at upper-intermediate level or higher — we work in an international team and use English in documentation and daily communication.What else we appreciate in our team:Experience with Elasticsearch, Prometheus, Grafana, S3, or Cassandra;
Experience with Redis orsimilar in-memory storage;
Familiarity with messagebrokers (Rabbit MQ, Kafka, NATS);
Working on high-load or distributed systems;
Observability skills (metrics, logs, alerts, traces).

📌 Senior Golang Developer (Madrid)
🏢 Group-Ib
📍 Madrid