Product Engineer (Full-Stack)

Proposales AB; Stockholms kommun; On-site; SEK 500,000 - 700,000; Full time

Job summary

Proposales AB is seeking a talented Product Engineer to drive product initiatives from idea to launch. Based in Stockholm, you'll work in a collaborative environment with a focus on AI-assisted product development, leveraging your skills in JavaScript, TypeScript, and React.

Your experience will allow you to effectively manage projects without detailed briefs, making decisions that ensure high-quality outputs and fostering a strong team culture.

Qualifications

• Experience in product development from concept to launch.
• Comfortable working from a blank page to production.
• Understanding of AI tool usage to create reliable outputs.

Responsibilities

• Own product initiatives and drive them from idea to launch.
• Collaborate with the leadership team to prioritize features.
• Ensure high-quality product outputs while using AI.

Skills

Product ownership

AI tools proficiency

JavaScript

TypeScript

React

Node.js

PostgreSQL

Tools

Next.js

Vercel

LLM based tooling (Claude, Cursor)

Job description

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. This role is based in our Stockholm office, fully on‑site.

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