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