Senior Go Engineer - Fintech Payment Gateway (Flexible)

COLIBRIX ONE; Barcelona; Presencial; EUR 70.000 - 110.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Salary & Benefits

Flexible work

Learning & Growth

Team culture

Impact on fintech

Descripción de la vacante

COLIBRIX ONE is seeking an experienced Go Engineer in Barcelona to join our fintech-focused payments gateway project. You will design and implement Go-based services, focusing on stability, security, and real-time processing for merchants and financial institutions.

Ideal candidates have 3–5 years in Go and a strong background in distributed systems, API design, and fintech regulations. We offer a collaborative culture, growth opportunities, and flexible work arrangements within a fast-growing

Formación

• 3-5 years of Go development experience focused on backend systems.
• Around 5 years of experience working with fintech applications.
• Understanding of distributed systems, microservices architecture, and API design.
• Fluency in written and spoken English and Russian.

Responsabilidades

• Design and develop Go-based services for the payment gateway and related fintech systems, focusing on stability, fault tolerance, and correct handling of financial operations.
• Translate business requirements into clear technical specifications and propose concrete solutions at the service and module level, including API design, data models, and integrations with external providers.
• Build solutions in compliance with security requirements, including PCI DSS, proper handling of sensitive data, and secure inter-service communication.
• Analyze and optimize service performance, including code profiling, concurrency handling, and efficiency of data storage and network interactions.
• Participate in the architecture of microservices: service boundaries, communication patterns, load balancing, error handling, queues/streaming, and data storage approaches.
• Produce maintainable, testable code with appropriate unit and integration test coverage, following team development standards.
• Participate in code review as part of the development process: evaluate implementations, identify issues, and provide constructive feedback aligned with technical requirements.
• Contribute to technical discussions by offering concrete, practical solutions within the current architecture and development processes.

Conocimientos

Go

Backend

Distributed systems

API design

Kafka

NATS

SQL

NoSQL

CI/CD

AWS

GitLab

English

Russian

Herramientas

PostgreSQL/MySQL

MongoDB/Redis

REST/gRPC

AWS

Prometheus

Grafana

Kafka

NATS

Descripción del empleo

COLIBRIX ONE is seeking an experienced Go Engineer in Barcelona to join our fintech-focused payments gateway project. You will design and implement Go-based services, focusing on stability, security, and real-time processing for merchants and financial institutions.

Ideal candidates have 3–5 years in Go and a strong background in distributed systems, API design, and fintech regulations. We offer a collaborative culture, growth opportunities, and flexible work arrangements within a fast-growing