Senior Backend Engineer Fintech API & AI Banking (Remote US)

Doit; United States; Remote; USD 120,000 - 160,000; Full time

Job summary

Doit seeks a remote backend engineer to build core systems behind an AI-powered neobank app. You will create reliable APIs and workflows that scale across markets and millions of users, interfacing with partners and internal systems.

Join a team focused on fintech products, security, and reliability. You will collaborate with product, frontend, mobile and AI teams to ship features quickly and safely, while simplifying recurring tasks and improving data quality.

Qualifications

• Experience building backend services used by real customers at meaningful scale.
• Strong understanding of APIs, data modelling and security fundamentals.
• Ability to design reliable, scalable systems with good observability.

Responsibilities

• Build backend services and APIs for onboarding, accounts, payments, cards, transfers, and risk/workflows.
• Design reliable systems supporting real customer transactions and scalable operations.
• Integrate with internal systems, payment providers, and third-party platforms.
• Own backend reliability, security, latency, observability and data integrity.

Skills

APIs

Databases

Authentication

Authorization

Queues

Events

Integrations

Reliability

Job description

Doit seeks a remote backend engineer to build core systems behind an AI-powered neobank app. You will create reliable APIs and workflows that scale across markets and millions of users, interfacing with partners and internal systems.

Join a team focused on fintech products, security, and reliability. You will collaborate with product, frontend, mobile and AI teams to ship features quickly and safely, while simplifying recurring tasks and improving data quality.