Senior AI-Driven Backend Engineer – FinTech Platform

Gynger; New York, Northern (NY, KY); Hybrid; USD 175,000 - 215,000; Full time

Benefits offered by this job

Equity

Flexible PTO

Robust benefits

Job summary

Gynger is hiring a Senior Software Engineer to build AI-native infrastructure for credit risk, underwriting, and payments. You will design scalable APIs, data models, and backend services, with full-stack ownership from concept to deployment.

You will work across the stack, bringing AI-assisted development practices into daily work and helping evolve engineering standards in a fast-moving fintech startup.

Qualifications

• Bachelor's degree or equivalent practical experience.
• 5+ years of professional experience with TypeScript (React front-end, Node.js back-end).
• Strong backend design including scalable APIs, databases, and architecture.
• Track record building full-stack applications from scratch.
• Preferred: tech lead or team lead experience.
• Experience deploying and operating apps in a cloud env (GCP/AWS).
• Hands-on with AI development tools like Claude Code, Cursor, or Copilot.
• History of improving engineering practices and standards.

Responsibilities

• Design and build production systems from the ground up, including scalable backend services and data models.
• Take full-stack features from concept through architecture, front-end, backend, and deployment.
• Build and extend AI agent-powered workflows for credit risk operations (underwriting, risk monitoring, collections, payments).
• Use AI tooling as a normal part of development (Claude Code, Cursor, Copilot).
• Contribute to evolving engineering practices, architecture patterns, and code review norms.
• Participate in code reviews and provide constructive feedback.
• Collaborate with engineers, architects, designers, and product managers to solve complex problems.
• Maintain a mindset of experimentation while ensuring production quality.

Skills

TypeScript

React

Node.js

Full-stack development

API design

GCP/AWS

AI tooling

Code reviews

Leadership

Ownership

AI workflows

Team collaboration

Education

Bachelor's degree

Tools

Claude Code

Cursor

Copilot

Job description

Gynger is hiring a Senior Software Engineer to build AI-native infrastructure for credit risk, underwriting, and payments. You will design scalable APIs, data models, and backend services, with full-stack ownership from concept to deployment.

You will work across the stack, bringing AI-assisted development practices into daily work and helping evolve engineering standards in a fast-moving fintech startup.