Full-Stack Engineer - Stockholm based

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 talented Full-Stack Engineer to join our Product team. This is your chance to shape the future of a fast-growing startup and build a platform with limitless potential. You’ll contribute across the stack and play a key role in everything from ideation to deployment.

Your mission

• Write scalable, maintainable, and testable code with a quality-first mindset
• Continuously iterate and optimize for performance and user experience
• Embrace new technologies as we push into serverless infrastructure
• Help define and grow our engineering culture, Proposales should be your favorite place to work

What we believe in

We’re serverless-first, hosted on Vercel with a monorepo built using Next.js and TypeScript.

We prioritize long-term maintainability over short-term speed while also keeping things simple and test-driven.

Functional programming over OOP. Minimal abstractions. No ORMs.

Modular code with shared logic and UI in internal libraries.

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.

Some of the technologies you would be working with

Javascript

React

• Node.js
• Next.js

TypeScript

PostgreSQL

Vercel

Vercel AI SDK

MCP

A bit about you

• Strong skills in JavaScript and modern frontend/backend frameworks (5 years plus)
• Experience with APIs, product development, and full-stack problem-solving
• You are great to collaborate with
• You believe in code quality through code reviews, pair programming, test-driven development and code reviews are your default
• Willingness to learn new technologies and move between different tech stacks, including AI and LLM-based product development.
• You value collaboration and clarity over rigid processes
• You’re curious, adaptable, and eager to learn
• Fluent in English (written and spoken)
• You live in Stockholm and thrive in an office-first team culture