Senior Ruby Developer (Ruby & Go)

Triwill Group; Ireland; On-site; EUR 110,000 - 150,000; Full time

Job summary

Triwill Group in Ireland seeks a Senior Ruby Developer blending Ruby on Rails with Go to build and scale secure payment infrastructure for a global fintech environment. You will own backend powering payment portals and provider integrations, ensuring reliability at high throughput.

The role emphasizes security, compliance, and robust transaction processing, with mentoring responsibilities and contribution to technical direction in an international engineering team.

Qualifications

• Proven experience with Ruby on Rails in a production environment.
• Strong Go development skills for backend services.
• Experience building secure, reliable payment infrastructure.
• Familiarity with payments and financial transaction flows.

Responsibilities

• Own backend powering payment portals and integrations with providers.
• Design end-to-end deposit and withdrawal flows.
• Ensure robust transaction processing, reconciliation, and failure handling.
• Mentor engineers and contribute to technical direction within a global team.

Skills

Ruby on Rails

Go

Backend engineering

Payments domain

Job description

Senior Ruby Developer (Ruby & Go) based in Ireland.

This is a senior backend engineering opportunity focused on building and scaling secure, reliable payment infrastructure for a global fintech environment. You will take ownership of the backend powering payment portals and integrations with payment service providers. The role combines Ruby on Rails expertise with Go development for high-throughput and latency-sensitive services. You will design end-to-end deposit and withdrawal flows while ensuring robust transaction processing, reconciliation, and failure handling. Security and reliability are central, with a strong focus on financial data protection and compliance. You will also contribute to technical direction, mentor engineers, and help evolve a high-performing international engineering environment.