Senior Ruby Developer (Ruby & Go)

📋 Description

• Design, build, maintain, and own backend services using Ruby on Rails and Go, with a focus on
• Lead the integration of new payment service providers and payment methods, including cards, bank
• Build and maintain end-to-end deposit and withdrawal workflows, ensuring secure and consistent
• Design, implement, and consume PSP APIs, webhooks, callbacks, and other integration mechanisms.
• Develop transaction routing, status tracking, reconciliation, and payment lifecycle logic.
• Implement robust handling for payment states, retries, idempotency, failures, and edge cases to

🎯 Requirements

• 5+ years of backend engineering experience, particularly in API-driven and integration-heavy
• Strong professional experience with Ruby and Ruby on Rails, with production-level experience in Go
• Proven experience integrating payment service providers, payment gateways, or comparable financial
• Strong understanding of payment flows, webhooks, callbacks, transaction lifecycles, and payment
• Knowledge of PCI DSS and secure handling of sensitive financial and payment data.
• Hands-on experience with reconciliation, idempotency, retries, error handling, and other patterns

🎁 Benefits

• Fully remote position.
• Monday–Friday schedule, from 9:00 to 18:00.
• Visa sponsorship.
• Medical insurance starting from the first week.
• Career growth opportunities within a fast-scaling fintech environment.
• Opportunities to participate in international events, meetups, and business trips to global offices.