The skills to look for in a pre-vetted fintech backend developer start with secure API design, database encryption, and working knowledge of compliance frameworks like GDPR, SOC 2, and PCI-DSS. In regulated financial environments, these stop being optional extras and become the baseline.
Beyond that, look for familiarity with cloud platforms fintech companies actually use, primarily AWS and GCP, alongside experience with financial data structures: ledger systems, transaction records, and reconciliation logic. Developers who have worked on payment rails or core banking integrations tend to bring context that saves real time in architecture decisions.
Scalability deserves its own conversation in interviews. A strong fintech backend developer can speak to how they handled high transaction volumes in production and where they ran into performance bottlenecks. Concrete examples matter. Familiarity with concepts without operational experience behind them may not hold up when things get complicated at scale.