Senior Golang Developer

Group-IB; Madrid; Presencial; EUR 40.000 - 60.000; Jornada completa

Descripción de la vacante

Group-IB in Madrid is looking for a Backend Engineer to design and implement features for our fraud protection and digital risk prevention products. The role involves working with Golang and enhancing performance across large-scale data systems.

The ideal candidate has over 5 years of experience in backend development with Golang and is comfortable in Linux environments. Join our team to make a real impact on cybersecurity.

Formación

• 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 PostgreSQL or similar.
• Comfort working in Linux environments.
• Experience developing production-grade systems and APIs.
• English at upper-intermediate level or higher.

Responsabilidades

• Design and implement new product features and APIs.
• Build integrations with third-party data sources.
• Increase the share of Golang services.
• Improve performance and scalability.
• Integrate services across the Group-IB product ecosystem.
• Develop and maintain internal platforms used across teams.

Conocimientos

Golang

SQL

PostgreSQL

Linux

APIs

Herramientas

Elasticsearch

Prometheus

Grafana

S3

Cassandra

Redis

RabbitMQ

Kafka

NATS

Descripción del empleo

Founded in 2003 and headquartered in Singapore, Group‑IB is a leading creator of cybersecurity technologies to investigate, prevent, and fight digital crime. Combating cybercrime is in the company’s DNA, shaping its technological capabilities to defend businesses, citizens, and support law enforcement operations.

Group‑IB’s Digital Crime Resistance Centers (DCRCs) are located in the Middle East, Europe, Central Asia, and Asia‑Pacific to help critically analyze and promptly mitigate regional and country‑specific threats. These mission‑critical units help Group‑IB strengthen its contribution to global cybercrime prevention and continually expand its threat‑hunting capabilities.

About The Role

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.

YOUR MISSION

• Design and implement new product features and APIs
• Build integrations with third‑party data sources
• Increase the share of Golang services
• Improve performance and scalability (query optimizations, sharding, etc.)
• Integrate services across the Group‑IB product ecosystem
• Develop and maintain internal platforms used across teams

What We Are Looking For

• 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 PostgreSQL or similar
• Comfort working in Linux environments
• Experience developing production‑grade systems and APIs
• English at upper‑intermediate level or higher

What Sets You Apart

• Experience with Elasticsearch, Prometheus, Grafana, S3, or Cassandra
• Experience with Redis or similar in‑memory storage
• Familiarity with message brokers (RabbitMQ, Kafka, NATS)
• Working on high‑load or distributed systems
• Observability skills (metrics, logs, alerts, traces)