Full-Stack Engineer: AI-Powered Impact Platform

Simpli Inc.; New York (NY); Hybrid; USD 120,000 - 180,000; Full time

Job summary

Simpli is seeking a Full Stack Engineer in New York to build features end-to-end on a TypeScript/React platform used by enterprise brands and charities. You’ll own database design, APIs, UI, and AI-powered tooling, shipping real functionality from day one.

You’ll work directly with the founder, shape architecture decisions, and see impact through delivery confirmations and metrics like donation matching and impact reporting. Grow technical judgment here.

Qualifications

• Proficient in TypeScript React stack and building web apps end-to-end.
• Strong SQL/Postgres skills and data modeling.
• Experience with AI-assisted development and AI copilots.
• Ability to ship features with high quality and speed.
• 1-4+ years of customer-facing software experience.

Responsibilities

• Build full-stack features from DB to UI
• Own product surfaces used by charities and brands
• Develop AI-powered tooling and integrate with APIs
• Design and scale serverless APIs and background jobs
• Collaborate with founder and cross-functional teams

Skills

TypeScript

React

SQL

AI-assisted development

Full-stack delivery

1-4+ years experience

Tools

Next.js

Postgres

Cursor AI

Claude Code

Codex

Job description

Simpli is seeking a Full Stack Engineer in New York to build features end-to-end on a TypeScript/React platform used by enterprise brands and charities. You’ll own database design, APIs, UI, and AI-powered tooling, shipping real functionality from day one.

You’ll work directly with the founder, shape architecture decisions, and see impact through delivery confirmations and metrics like donation matching and impact reporting. Grow technical judgment here.