Frontend developer

Rasulson Consulting; Stockholms kommun; On-site; SEK 700,000 - 900,000; Full time

Job summary

Rasulson Consulting is seeking a frontend developer for a temporary assignment centered on building robust, reusable components within a design system. You will focus on semantics, accessibility, API design, testability and documentation, working closely with design.

You will implement components with Lit and Web Components, document usage patterns, and help other teams apply guidelines. The role is parental-leave cover in a small, cross-disciplinary team, with start date to be agreed.

Qualifications

• 3–5 years of frontend development experience.
• Strong knowledge of JavaScript and TypeScript.
• Experience with component-based frontend development, ideally React.
• Hands-on with Web Components, ideally using Lit.
• Experience building or contributing to component libraries or design systems.
• Foundational accessibility knowledge (WCAG, semantics, keyboard navigation).
• Experience with version control and CI/CD workflows.
• Able to collaborate with designers and developers.
• Ability to clearly document components and guidelines.

Responsibilities

• Build robust, reusable components within a design system.
• Ensure accessibility, semantics, and good API design.
• Document usage patterns, behaviors and technical decisions.
• Collaborate with designers and UX writers to apply guidelines.
• Support other teams on proper component usage and guidelines.

Skills

Frontend experience

JavaScript/TypeScript

React

Lit/Web Components

Design systems

Accessibility (WCAG)

Git/CI-CD

Collaboration

Documentation

Tools

Web Components (Lit)

Storybook

Git

Job description

Assignment Description

Our client is seeking a frontend developer for an assignment centered on building robust, reusable and well-documented components within a design system.

This role suits someone who cares about the finer details of component development — semantics, accessibility, API design, testability and documentation — and who enjoys working closely alongside design. You will join a small, focused team made up of developers, designers and UX writers/content designers.

You will work on implementing and evolving components using Lit and Web Components, ensuring high standards of accessibility, semantics, API design and usability. Part of the role involves documenting usage patterns, behaviors, guidelines and technical decisions, helping make components easy for other teams to understand, adopt and maintain.

You will collaborate closely with designers and UX writers/content designers, and contribute to improving the design system's workflows, component structure and internal communication. The role also includes supporting other teams on how to properly apply components and guidelines.

This is a temporary assignment covering parental leave within an existing design systems team, with an emphasis on maintaining continuity, quality and the ongoing development of current work.

Required Qualifications

• At least 3–5 years of experience in frontend development
• Strong knowledge of JavaScript and TypeScript
• Experience with component-based frontend development, ideally with React
• Hands-on experience with Web Components, ideally using Lit
• Experience building, maintaining or contributing to component libraries or design systems
• Foundational understanding of accessibility in frontend development, including WCAG principles, semantics and keyboard navigation
• Experience with version control and CI/CD workflows
• Comfortable collaborating closely with designers, UX writers/content designers and fellow developers
• Ability to clearly document components, guidelines and technical decisions

Meriting Experience

• In-depth, hands-on experience with accessible component development — WCAG review, ARIA, focus management and screen reader testing
• Experience designing and managing component APIs within Web Components, such as properties/attributes, events and slots
• Experience using or integrating Web Components within React applications
• Practical experience with Storybook or similar documentation and development tools
• Interest in or experience with automated testing of UI components
• Experience with design tokens, theming or CSS architecture
• Experience with monorepos, packaging and npm package version management

Profile

You are structured, detail-oriented and take ownership of quality, precision and integrity in both your code and your deliverables. You work well independently, while also enjoying close collaboration within a small team.

You communicate clearly, welcome feedback and bring a curious, pragmatic approach to your work. You enjoy making incremental improvements and thrive in an environment with focused tasks, clear priorities and tight collaboration with design and content.

Client: Our client

Scope: Consulting assignment (parental leave cover)

Location/Remote: To be agreed with the client

Start date: To be agreed