Senior Go Engineer - Fintech Payments Gateway

Colibrix Limited; Warszawa; On-site; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Shape fintech future

Collaborative team culture

Continuous learning and development

Job summary

COLIBRIX ONE seeks an experienced Go Engineer to join our fintech-focused team and contribute to a real-time payment gateway. You will design and implement Go services, ensure secure inter-service communication, and work within a microservices architecture to deliver scalable financial solutions.

Ideal candidates have 3–5 years in Go backend development, strong API design skills, and experience with fintech systems, databases, and observability tools.

Qualifications

• 3–5 years of Go development experience focused on backend systems
• 5 years of fintech experience or exposure is preferred
• Understanding of distributed systems, microservices, and API design (REST/RPC)

Responsibilities

• Design and develop Go-based services for the payment gateway and related fintech systems
• Translate business requirements into technical specs and concrete solutions
• Build secure inter-service communication and PCI DSS-compliant solutions
• Analyze and optimize service performance and storage/network interactions
• Participate in microservices architecture decisions and data storage approaches
• Contribute to code quality with tests and reviews
• Engage in code reviews and provide constructive feedback
• Provide practical solutions within the current architecture and development processes

Skills

Go backend development

Distributed systems

Microservices architecture

REST/RPC API design

AWS/cloud

CI/CD (GitLab)

Security mindset

Tools

PostgreSQL

MySQL

MongoDB

Redis

Kafka

NATS

Prometheus

Grafana

OpenTelemetry

REST/gRPC

Job description

COLIBRIX ONE seeks an experienced Go Engineer to join our fintech-focused team and contribute to a real-time payment gateway. You will design and implement Go services, ensure secure inter-service communication, and work within a microservices architecture to deliver scalable financial solutions.

Ideal candidates have 3–5 years in Go backend development, strong API design skills, and experience with fintech systems, databases, and observability tools.