Full-Stack Engineer

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 building the infrastructure for a more generous global supply chain. Enterprise brands and 550,000+ charities rely on our platform to move millions of dollars in product donations — from warehouse to community. We handle everything: intelligent charity matching, logistics coordination, real-time impact tracking, and compliance tooling. Every feature we ship connects directly to real-world outcomes: 4M+ people helped, $70M+ in product value moved, and 3.8M+ lbs of goods diverted from landfills.

Our engineering team is small on purpose. That means outsized ownership, direct access to leadership, and real influence over what gets built next. If you want to mass-produce tickets inside a feature factory, this isn't the place. If you want to mass-produce impact, keep reading.

The Role

We're looking for a Full Stack Engineer who wants to build products that matter from day one. You'll own features end-to-end — from database schema and edge functions to polished UI — across a platform that enterprise brands and hundreds of thousands of charities depend on daily.

You will ship real features to real users immediately. As you grow here, you'll develop deep technical judgment and your own perspective on where the product should go. Roles blur on a team this size — you'll work directly with the founder, shape architecture decisions, and see the impact of your code in delivery confirmations and landfill diversion numbers.

What You'll Do

• Build full-stack features across our TypeScript / React platform — from Postgres schema design to production UI
• Own the product surfaces that charities and enterprise brands interact with daily: donation matching, logistics workflows, inventory coordination, impact reporting
• Ship AI-powered tooling — intelligent charity matching, automated compliance checks, agentic search, and smart allocation engines
• Design and scale serverless APIs, background workers, frontend UI/UX, and more
• Build internal tools that give our operations, impact, and growth teams superpowers
• Shape architecture decisions — every engineer has a real voice in how the platform evolves

What We're Looking For

• Deep comfort with TypeScript, React, and SQL (Postgres) — this is 90% of the job
• Experience building and shipping web applications end-to-end — you've taken features from idea to production
• Proficiency with AI-assisted development — you actively use AI coding assistants (Cursor, Claude Code, Codex etc.) in your daily workflow and can leverage AI agents to move faster. This is non-negotiable for us. We build with AI, and we expect you to as well
• Strong product sense — you think about why before how
• Ability to move fast without sacrificing quality — we set a high bar because enterprise clients and hundreds of thousands of charities depend on us
• A full-stack, can-learn mindset — willing to work outside your comfort zone across frontend, backend, and infrastructure
• 1-4+ years of experience building customer-facing software

Bonus:

• Experience with serverless platforms
• Familiarity with AI/LLM integration
• Experience with Next.js
• Background in logistics systems, marketplace platforms, or nonprofit tech

The Impact

Every feature you ship connects directly to real-world outcomes:

• 4M+ people helped through the products our platform delivers
• $70M+ in product value moved from warehouses to communities
• 3.8M+ lbs of goods diverted from landfills
• Enterprise brands trusting Simpli with their inventory, their reputation, and their sustainability commitments

You won't be guessing whether your code matters. You'll see it in the delivery confirmations, the charity thank-you notes, and the landfill diversion numbers.

Why Simpli

We're building the infrastructure for a more generous global supply chain — and we're doing it with a small, world-class team that moves fast on hard problems. High autonomy, high impact, no bureaucracy. Your code directly moves product off warehouse shelves and into the hands of people who need it.