Senior Ruby Developer (Ruby & Go)

📋 Description

• Design, build, maintain, and own backend services using Ruby on Rails and Go, focused on
• Lead integration of payment service providers and payment methods (cards, bank transfers, crypto
• Build end-to-end deposit/withdrawal workflows with secure, consistent fund movement.
• Design, implement, and consume PSP APIs, webhooks, callbacks, and other integrations.
• Develop transaction routing, status tracking, reconciliation, and payment lifecycle logic.
• Implement robust handling for payment states, retries, idempotency, failures, and edge cases.

🎯 Requirements

• 5+ years backend engineering experience, API-driven and integration-heavy environments.
• Strong professional experience with Ruby and Ruby on Rails; production-level Go experience
• Proven experience integrating payment service providers and financial APIs.
• Understanding of payment flows, webhooks, transaction lifecycles, and payment states.
• Knowledge of PCI DSS and secure handling of sensitive financial data.
• Experience with reconciliation, idempotency, retries, error handling, and reliable financial

🎁 Benefits

• Fully remote position.
• Monday–Friday schedule, 9:00–18:00.
• Visa sponsorship.
• Medical insurance from first week.
• Career growth in fast-scaling fintech environment.
• Global travel opportunities to participate in international events and meetups.