Software Engineer II (NYC)

Onshore builds AI-native tax software for the people who build America. Farmers, manufacturers, and founders do the R&D that moves this country forward - and most never get the credit they've earned. We're fixing that: our agents do the analysis that used to take CPAs weeks, our experts review it, and our customers get their money back. We started with R&D tax credits and are expanding into agricultural incentives, corporate tax returns, and other tax incentives.

We're hiring a Software Engineer II to own product end-to-end across our stack.

What you'll do

• Own full-stack features from spec to production across our Vite + React frontend (shadcn, Tailwind) and TypeScript backend (Bun, Hono, SST v3 on AWS - Lambda, ECS/Fargate, SQS, Aurora Postgres with Drizzle).
• Build in one of four areas: the core R&D credit platform, agriculture incentives, corporate tax and compliance (our 1120-S product), or agentic infrastructure.
• Build AI-powered pipelines that ingest, extract, and verify client data at scale - agents, RAG (Pinecone), and durable execution workflows.
• Work directly with founders, tax experts, and customers; mentor SWE Is as the team grows.

Our stack

• TypeScript end-to-end - Bun + Hono services, Vite + React (shadcn, Tailwind) on the front.
• SST v3 on AWS: Lambda, ECS/Fargate, SQS, Step Functions.
• Aurora Postgres with Drizzle ORM, Pinecone for RAG, Clerk for auth.
• Frontier LLMs powering extraction, analysis, and agent workflows.

You should have

• 2+ years building production software, ideally full-stack.
• Strong TypeScript and React. Comfort in a serverless AWS environment is a plus.
• A bias toward shipping and an eye for craft.

Compensation

• $185k base
• Equity
• Full benefits