Frontend Developer | Coherence Engine
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Company: Coherence Engine
Product: AnalogLab
Location: Flexible / Hybrid
Coherence Engine is pioneering electronic design automation tools for the developers of quantum computers. We are committed to the highest quality in simulation accuracy and user experience. Coherence Engine is a mostly remote, AI native company. Our Engineering team stays close to our customers by using Windows, GitBash, Python, and Typescript.
We are looking for an early career frontend engineer to take ownership of our products’ web interfaces.
What you’ll do
- Work in a tight knit team and directly with customers, translating what they actually need into interface behaviour that feels right, not just technically correct.
- Build and refine the interactive parts of the product: custom canvas nodes and edges (@xyflow), plots, forms, and layout.
- Own bugs end-to-end: take tickets from repro to root cause to fix, verifying the result in the browser.
- Direct AI coding agents — you'll discover use cases for agents, write and refine skills, and keep the quality bar high.
- Keep the PRD as the living source of truth: capturing changed requirements as you learn them, not just the code that ships.
- Maintain a test suite (Vitest, Playwright) that gives the team confidence to move fast — a green just ci is the price of admission for merging, not an afterthought.
What we’re looking for
You’ll have a few years' commercial experience, or are a new graduate with good grades. Most importantly, you genuinely care about building excellent web applications.
- Demonstrable experience of working on a graphical web application
- Proven ability to take a UI from "technically works" to "feels right."
- Excellent written and verbal communication skills: you will be working with UI/UX, designers, server-side developers, and early access customers.
What matters most
We are not grinding out CRUD apps. The successful candidate will be someone who looks at a website and:
- Immediately judges the affordance legibility and tests the drop zones - to feel the difference between "it works" and "it's satisfying to use”
- Knows how to measure frames-to-feedback - you notice lag, jank, and missing loading states before anyone else
- Feels uncomfortable when ghosts are missing
- Hits Ctrl+Z
For us, an intuitive knowledge of what makes a great user experience is more important than experience with our React stack. This is an opportunity to shape the interface of a new engineering simulation platform from an early stage. If this sounds interesting, we'd like to hear from you!
Cover letter
In your cover letter include a link to your portfolio and one paragraph each for both:
- A screenshot of an interaction (any app, any website) you think is genuinely well-designed explaining the one small decision that makes it work, and
- A time an AI coding agent got something wrong, and what you changed to fix it.