Senior Ruby Developer (Ruby & Go)
📋 Description
- Design, build, maintain, and own backend services using Ruby on Rails and Go, focusing on
- Lead integration of payment service providers and payment methods (cards, bank transfers, crypto
- Build end-to-end deposit and withdrawal workflows with secure funds movement.
- Design, implement, and consume PSP APIs, webhooks, callbacks, and related 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, API-driven and integration-heavy environments.
- Strong experience with Ruby and Ruby on Rails; production-level Go experience preferred.
- Proven experience integrating payment service providers and financial APIs.
- Understanding of payment flows, webhooks, callbacks, lifecycle and states.
- Knowledge of PCI DSS and secure handling of financial data.
- Experience with reconciliation, idempotency, retries, error handling; scalable distributed backends.
🎁 Benefits
- Fully remote position.
- Visa sponsorship.
- Medical insurance starting from first week.
- Career growth opportunities within a fast-scaling fintech.
- Opportunities to participate in international events and travel to global offices.
- Exposure to international payment technologies and high-scale backend systems.
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