Senior Front-End Developer

Role Overview

We are actively modernizing the UI of our Building Management System (BMS) and energy optimization products into a modern, React-based single-page application (SPA).

As a senior front-end developer, your primary focus will be on this transformation. This is a gradual migration, where existing functionality will be ported to the new SPA framework, with improvements to UI/UX made possible by the new architecture.

In addition to modernization, you’ll play a key role in developing new features and enhancing product capabilities. The new front-end architecture is grounded in strong functional programming principles. As such, you’ll work extensively with libraries such as Effect-TS, fp-ts, and io-ts, in addition to React.

This is a user-facing product with an existing user base, including internal users, which means you’ll have direct access to feedback and insights from actual usage.

Key Responsibilities

• Develop user-facing components and views using React.
• Optimize performance and responsiveness across platforms and devices.
• Maintain and refactor code to uphold high standards of quality and maintainability.
• Participate in agile ceremonies, including sprint planning and code reviews.
• Collaborate with backend developers, UI/UX designers, and product managers.
• Continuously improve UI and graphical interactions to ensure a great user experience.
• Monitor and analyze front-end performance.

Skills and Competencies

We categorize required knowledge into three main tiers, based on priority and role alignment:

Essential

These skills are required from day one:

• Proficiency in TypeScript
• Deep experience with React
• Solid understanding of responsive and mobile-first design
• Ability to write clean, maintainable, and scalable code
• Strong grasp of HTML and CSS

Important

These are capabilities that can be developed on the job, but will be necessary for effective performance in the role:

• Effect-TS
• XState
• Chakra UI
• CI/CD pipelines
• Unit testing
• GitLab workflows
• An eye for good design and intuitive UI/UX
• Experience with strongly typed functional programming

Beneficial

Skills that extend the candidate’s usefulness beyond the immediate scope of the role:

• UI/visual design skills
• Sketch (or similar design tools)
• Familiarity with Linux environments
• Rust
• Docker / Kubernetes
• Property-based testing
• fp-ts and io-ts

Bonus

Not essential, but traits and interests that resonate well with the team and culture:

• Haskell experience
• Familiarity with Nix or NixOS
• Vim or Neovim (bonus points for significant configuration work)
• FreeBSD
• Experience with Home Assistant

Ideal Candidate Traits

We’re looking for someone who:

• Has a genuine passion for UI/UX and visual design beyond just job requirements.
• Is self-driven and eager to learn and grow continuously.
• Has a mindset geared toward constant improvement—nothing is ever “done.”
• Embraces functional programming paradigms and applies them with rigor.
• Cares deeply about expressing domain logic through types and static analysis.
• Is environmentally conscious and motivated by contributing to a more sustainable world.
• Prefers Unix-based systems (macOS or Linux). Candidates who prefer Windows as a daily development environment may not be a good fit.