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Senior Software Engineer (Fintech Fraud Prevention & AI Systems)

velocehr • United States
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Build scalable fintech fraud prevention systems with React/Next.js and Go/Java backends. Design high-volume transaction processing features. Requires 6+ years in software engineering, fintech/AI startup experience, and expertise in React, TypeScript, and backend systems.

Key Highlights
6+ years in software engineering
2+ years with React, Next.js, and TypeScript
Backend experience in Go/Java (Python considered)
Key Responsibilities
Develop end-to-end product features for React/Next.js frontend and Go/Java backend
Design scalable systems for high-volume financial transaction processing
Own technical decisions and deployments for product features
Technical Skills Required
React/Next.js Go/Java TypeScript
Benefits & Perks
Competitive base salary + equity
Hybrid work (SF/NYC office: Mon/Wed/Fri)
AI-assisted pair programming interview (Cursor/Claude Code)
H-1B transfers supported with green card sponsorship
Nice to Have
Experience at a big tech company
BS in Computer Science or related STEM field

Job Description

About The Company

Our client is an early-stage, profitable fintech on a mission to expand access to credit for people historically excluded from the traditional financial system. Its products already serve hundreds of thousands of users across the US.

We’re hiring on behalf of a fast-growing Series A fintech startup that is building AI-native fraud prevention and disputes automation for banks and credit unions.

What You’ll Do

  • Build end-to-end product features across a React/Next.js frontend and a Go or Java backend
  • Design scalable, reliable systems that process high volumes of financial transactions
  • Own features from technical decisions through deployment

What We’re Looking For

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