AI-Driven Backend Engineer for Fintech Platform

Rain; New York (NY); Hybrid; USD 200,000 - 250,000; Full time

Benefits offered by this job

Unlimited vacation

Flexible working

Health/dental/vision coverage

401(k) with match

Equity

Wellness stipend

Lunch/dinner on-site

Team offsites

Job summary

Rain is building a new AI-enabled payments platform in a hypergrowth fintech environment. You’ll be among the first engineers on Rain's AI team, shaping internal systems at the intersection of AI agents, fintech, and stablecoins.

Join to design backend systems, APIs, data pipelines, and AI-powered features, collaborating with product and business teams to ship scalable, secure solutions for customers worldwide.

Qualifications

• Experience with Node.js and backend technologies.
• 1–3+ years building production systems that use LLMs, tool calling, structured outputs, prompt architecture, retrieval patterns
• A builder mentality, someone who experiments with side projects
• Comfortable with ambiguity, you can take a loosely defined problem, make decisions, and ship.

Responsibilities

• Be a critical part of the technical and product roadmap.
• Build and scale the backend systems, APIs, and data pipelines that power Rain.
• Design and ship AI-powered features, agents, and automation into our core platform.
• Build shared AI infrastructure: composable tool interfaces, eval frameworks, and permission-aware data access.
• Rapidly ship new capabilities to our customers and internal teams.
• Work embedded with the business, understand the workflows you're building for firsthand.

Skills

Node.js

LLM experience

Backend systems

Prompt architecture

Job description

Rain is building a new AI-enabled payments platform in a hypergrowth fintech environment. You’ll be among the first engineers on Rain's AI team, shaping internal systems at the intersection of AI agents, fintech, and stablecoins.

Join to design backend systems, APIs, data pipelines, and AI-powered features, collaborating with product and business teams to ship scalable, secure solutions for customers worldwide.