Backend Software Engineer, Trust & Safety (Anti-Fraud)

The role

This role owns the backend that turns ML and analytics signals into protections across accounts, credits, payments, and generation. You will integrate risk checks into product flows, build enforcement services and operator tools, and ensure controls work in production.

What you will do

• Connect existing ML scores and risk signals to account creation, credit usage, payments, and generation flows.
• Implement configurable rules, rate limits, account restrictions, and credit or payment controls.
• Build APIs and workflows for reviewing cases, inspecting decision history, and applying or reversing restrictions.
• Handle retries, duplicate events, concurrent requests, and safe rollouts.
• Add monitoring and audit trails to trace and fix failures.
• Work in other teams' codebases to add signals or interventions.
• Clarify controls with ML, analytics, and operations, scope implementations, ship, and verify production behavior.

Required qualifications

• Experience taking a difficult problem from an unclear starting point to a working system used in production.
• Ability to build reliable backend services including APIs, data models, queues, transactions, idempotency, and concurrency.
• Ability to integrate external services and debug failures across the request and event lifecycle.
• Ability to choose next steps, remove blockers, and cut scope to test ideas.
• Ability to work with ML, analytics, and operations to turn risk requirements into backend behavior.
• Ability to use operator feedback and customer cases to improve controls and learn unfamiliar systems.
• Ability to take feedback, change mind based on evidence, and share knowledge and responsibility.

Nice to have

• Fraud prevention, payments risk, or platform abuse experience.
• Integrating risk-scoring services or building rules engines and rate limiters.
• Case management, appeals, and risk operations tooling.
• Familiarity with Stripe.
• Experience building real-time scoring, graph-based account linkage systems.
• Python/Go experience.

Benefits

• Competitive base in USD
• Equity
• Relocation support

About the company

higgsfieldai