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Zoo

Senior Software Engineer, Frontend

Zoo · Los Angeles, California, United States; Remote

Posted about 3 months ago

or apply directly on Zoo's site. We never take the application ourselves.

Is this posting real?

This role has been open
81 days
Zoo's roles stay open a median of 81 days
Reposted
No
Salary listed
No
0% of Zoo's roles list one
Ghost-job risk at Zoo
high
9 stale, 0 reposted of 10 open
Hiring momentum
11 roles opened in the last 90 days
↑ up vs. the prior 90 days
Last confirmed on the employer's board
2026-10-23

Measured from postings appearing on and disappearing from Zoo's own greenhouse board since 2026-08-03. Full hiring picture for Zoo.

About this role

As a Senior Frontend Engineer at Zoo, you will be responsible for developing and optimizing the frontend of the Zoo Design Studio, an open-source CAD modeling application. Your role will involve enhancing user experience, collaborating with backend teams to implement APIs, and utilizing technologies like Typescript, React, and XState to improve performance and functionality. You will also work on integrating advanced features such as CodeMirror extensions and WebAssembly for better performance.

Our read on this posting2.0out of 5
benefits
1/5
freshness
1/5
career value
4/5
role clarity
4/5
pay transparency
0/5

Scored from the posting itself — how clearly the role is described, how much it says about pay and benefits, and how recently it was listed. Not a judgement of Zoo as an employer.

What you need

  • B.S. in Computer Science or a related field, or equivalent professional experience
  • Substantial experience in frontend software development building complex, highly performant and scalable applications
  • Strong proficiency in Typescript and React, with a portfolio or examples of complex applications built using these technologies
  • Deep knowledge of JavaScript and its internal workings and performance optimization techniques
  • Familiarity with WebAssembly (Wasm) and its use in web applications for performance enhancements
  • Understanding of browser internals across major browsers (Chrome, Firefox, Chromium, Brave, etc.) and their impact on application performance and compatibility

Nice to have

  • Proficiency with Rust
  • Experience with CodeMirror6
  • Experience with ASTs even if custom ESLint rules
  • Experience with WebGL or web graphics
  • A background in geometry and/or experience with design-based software

What you get

  • Competitive equity
  • Full benefits package which may vary by geography

Worth weighing

  • Salary range provided is $145,000 — $195,000 USD, but final offer depends on multiple factors
  • Role involves working on a novel open-source application, which may present unique challenges and opportunities
  • The position is described as a 'back of the front-end' role, which may not appeal to all frontend developers

Summarised from Zoo's posting. Read the full original.

Listed by Zoo on their greenhouse job board, last confirmed open on 2026-10-23. PitchMeAI is not the employer.

More roles at Zoo

All 10 open roles at Zoo →

Apply to a Senior Software Engineer, Frontend position at Zoo - Jobs near me at Los Angeles, California, United States; Remote