Senior Go Engineer — Fintech Backend & Scalability

COLIBRIX ONE; Barcelona; On-site; EUR 70,000 - 100,000; Full time

Benefits offered by this job

Competitive salary

Flexible work arrangements

Job summary

Join a fast-growing fintech team building scalable payment solutions across the EU/UK, with opportunities for growth, flexible work arrangements, and a competitive compensation package.

Qualifications

• 3–5 years of Go backend experience in fintech.
• Understanding of distributed systems and API design.
• Experience with SQL/NoSQL, message brokers, caching.
• Familiarity with CI/CD, GitLab, and AWS.
• Fluency in English and Russian.

Responsibilities

• Design and develop Go-based services for card-issuing platform.
• Translate requirements into API design, data models, integrations.
• Build secure solutions meeting PCI DSS and data protection.
• Analyze performance; optimize concurrency and storage.
• Contribute to microservices architecture and data storage approaches.
• Write unit and integration tests; participate in code reviews.

Skills

Go

API design

Distributed systems

CI/CD

AWS

Communication

Fintech domain

Tools

SQL

NoSQL

Kafka

NATS

Prometheus

Grafana

OpenTelemetry

GitLab CI/CD

Kubernetes

REST/gRPC

Job description

Join a fast-growing fintech team building scalable payment solutions across the EU/UK, with opportunities for growth, flexible work arrangements, and a competitive compensation package.