Software Engineer (Java_Spring Boot) at Quidax

Quidax is the simplest and most secure way to buy and sell bitcoin, ethereum, ripple and other altcoins.About the Role

We're hiring a Mid-Level Java, Spring Boot Engineer to work on the core backend systems that power how customers trade, move money, and interact with the Quidax platform.
You'll join a team working on the flows that matter most: APIs, integrations, transaction processing, and the reliability of systems that real customers depend on every day
. 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.

Reporting Line:

You'll report to the RAMP Engineering Manager and work closely with the RAMP Product Manager on priorities, user problems, and what gets built next.
Day to day, you'll collaborate with design, compliance, operations, support, and finance, as well as external partners.