Product Engineer

Be part of shaping what gets built, from idea to launch, at the intersection of AI and B2B SaaS. At Proposales, we're transforming the way businesses create proposals. By replacing static documents with a new online standard, we're redefining how deals are done, turning proposals into interactive, web-powered experiences. Think of us as building a piece of internet infrastructure for sales. Read about our mission: https://mission.proposales.com We're now looking for a Product Engineer to join our team. This role isn't about executing tickets, it's about owning outcomes. You'll take a product from zero to launch by yourself, using AI agents as a core part of how you work. You understand the business scope, you know what needs to exist, and you have the skills to build it. Your mission:

Take product initiatives from idea to shipped: scope, build, iterate, launch

Use AI agents as a genuine force multiplier, not just for boilerplate, but for real product development

Translate business problems into product decisions without needing someone to bridge the gap for you

Work closely with leadership and the product team to identify what actually matters to build next

Keep quality high; know when to trust what an agent produces and when to push back on it

What we believe in: We're serverless first, hosted on Vercel with a monorepo built using Next.js and TypeScript. We use AI where it clearly helps, in product and in internal tooling, and we care about reliability, safe handling of data, and keeping automation and human judgment in the right balance. We value judgment over credentials, ownership over process, and shipping over speccing. Some of the technologies you would be working with:

JavaScript / TypeScript

React, Next.js

Node.js

PostgreSQL

Vercel / Vercel AI SDK

MCP

LLM based tooling (Claude, Cursor, or similar)

A bit about you:

You think like a founder: you understand why something is being built, not just how

You're comfortable going from blank page to production without a detailed brief

You use AI tools daily and know how to get production quality output from them, not just prototypes

You have enough engineering depth to catch what agents miss and make sound architectural calls

You've shipped things: real things, that real people use

You value clarity and collaboration over rigid processes

Fluent in English (written and spoken)

You live in Stockholm and thrive in an office first team culture