Software Engineer - Penpot by Kaleidos

Stack

Responsibilities

• ▹Take part in a range of projects and features across Penpot, with a strong focus on solving real problems identified by users
• ▹Improve the user experience through new features, tackling pain points and bugs, and delivering quick wins with direct impact
• ▹Move across different parts of the product and propose solutions that work for Penpot users worldwide
• ▹Work within a horizontal team, where autonomy and shared decision-making are part of the role

Requirements

• ▹Interest in or experience with reactive programming (Penpot uses RxJS)
• ▹A background as a frontend developer (backend-for-frontend), with solid command of JavaScript, browser APIs, HTML and CSS, and experience with JS frameworks (mainly React)
• ▹Motivation to build robust, carefully crafted user interfaces
• ▹Knowledge of, and hands-on experience with, functional programming
• ▹Regular use of LLMs (Claude, Cursor, ChatGPT, OpenCode...) as part of how you work
• ▹Comfortable working in Linux environments
• ▹English: a high level of spoken and written English
• ▹Spanish: functional level (spoken and written), as many team meetings take place in Spanish
• ▹Solid, well-established experience; no specific degree required

Nice to have

• ▹Familiarity with Clojure or other functional languages (Scheme, Lisp...)
• ▹Knowledge of JavaScript testing (Jest, Cypress...) and end-to-end tests with Playwright
• ▹Interest in solving user problems with new languages and frameworks
• ▹Interest or knowledge in accessibility and responsible development
• ▹Interest or knowledge in design systems and their integration with product development
• ▹Previous experience or genuine interest in open-source projects
• ▹Use of agile methodologies in a professional environment
• ▹Background of collaboration in diverse teams (design, marketing, backend...)
• ▹Ability to ask the right questions to help product development

Soft skills

What we offer

• ▹Salary: 60–67k euros (gross annual)
• ▹Permanent contract

About the company

Kaleidos is the company behind Penpot, the first open-source design platform built for design and code teams to work together. It is a horizontal organisation with no traditional hierarchy, and more than 50% of the team are women.