Software Engineer(Ruby, Ruby on Rails) at Quidax

About the Role

• We're hiring a Mid-Level Rails Engineer to work on RAMP, our on-ramp/off-ramp product that helps users move money in and out of crypto. You'll join a focused team working on the flows that matter most: deposits, withdrawals, partner integrations, and reconciliation. It's a great role for an engineer who's ready to go deeper, take real ownership, and grow fast in a fintech environment.

What You’ll Be Owning

Learn & Contribute

• First 30 days: Get across the RAMP codebase, understand the core flows, and ship your first meaningful fix.
• By month 3: Own specific features or flows end to end, with support from the team where needed.
• By month 6: Independently investigate and resolve reliability issues across deposits, withdrawals, and partner callbacks.

Reliability & Code Quality

• Reduce recurring issues: stuck transactions, failed callbacks, unclear states, and manual escalations.
• Improve test coverage across critical flows and leave every area you touch cleaner than you found it.
• Add observability where it's weak: better logging, alerts, and debugging hooks.

Team & Growth

• Participate in code reviews, share what you learn, and support engineers around you.
• Grow your understanding of transaction-heavy systems: idempotency, retries, state machines, and reconciliation.

Biggest Challenges You’ll Tackle

• Working on backend systems where failures have real customer impact.
• Debugging complex, transaction-heavy flows that aren't always well documented.
• Balancing new feature work with improving the stability of existing systems.
• Learning fintech and crypto infrastructure concepts on the job and applying them quickly.

What We’re Looking For

Must-haves

• 3 to 5 years of Rails backend experience in production environments.
• You write clean code, debug with patience, and care about how your work affects real users.
• Comfortable with APIs, background jobs, database design, testing, and debugging.
• Methodical debugger: you trace flows, read logs, and find the real root cause.
• You improve code incrementally without defaulting to a full rewrite.
• Bonus: Experience in fintech, payments, crypto, or on-ramp/off-ramp products.

Nice to haves:

• Familiarity with transaction concepts: idempotency, retries, reconciliation, state machines.
• Experience working in a remote startup environment.
• Any exposure to crypto exchanges, payment providers, or bank integrations.