Manifest OS
LegalDirect Ashby career site

Design Engineer

Location
New York City, NY · On-site
Job type
Full-time
Level
Senior
Experience
7+ years
Listed
23 days ago

Skills & highlights for this role

  • TypeScript
  • React
  • PostgreSQL
  • design systems
  • relational database design

Also useful

  • GCP
  • AI coding tools
  • retrieval
  • agent orchestration

About the Role

We're looking for a Design Engineer to help build the legal tech platform powering the next generation of AI-native law firms. You care as much about how software feels as how it works. You'll own the development of secure client portals and enterprise-grade systems - from architecture to production.

This opportunity is ideal for engineers who want broad scope, high ownership and move nimbly across lanes. You'll work across AI systems architecture and full-stack engineering - eval systems, retrieval, agent orchestration, and optimization, alongside the APIs, data models, and systems that power the core platform.

This is an in-person role - you'll be on-site at our NYC office 5 days a week.

What You’ll Do

Design System Engineering

  • Evolve the design system into scalable components and tokens that make every project fast to ship and beautiful by default, whether a person or an agent is building it.
  • Spot patterns that keep recurring across the platform, and promote them into tested, documented primitives that designers and engineers can compose without reinventing.
  • Build the guardrails that keep the product on-system as it scales, including token linting, visual regression testing, and component documentation that AI coding tools can read and follow.

Product Engineering

  • Own features end to end, from the UI through the APIs and database tables behind it.
  • Build UI that holds up to production usage: failure modes, caching, accessibility.
  • Partner with design on what AI-native interfaces should be in a high-stakes domain: progressive disclosure, streaming states, and the patterns nobody's figured out yet

Must-haves

  • 7+ years building production software, with demonstrated depth in at least one area (frontend, distributed systems, ML/AI systems)
  • Proven track record delivering features that produce measurable business outcomes
  • Built or meaningfully shaped a production design system, including component APIs, tokens, theming, and documentation, that other engineers adopted and shipped with
  • Comfort with relational database design and data modeling
  • Fluent with AI coding tools as a core part of your daily workflow
  • A track record of self-teaching your way into unfamiliar systems and shipping there
  • First-principles and systems thinking: you can reason about a system you didn't build, from the database up through the API to the product surface
  • Familiarity with our stack - TypeScript, React, GCP, PostgreSQL

Nice-to-haves

  • Deeply engaged with the AI tooling ecosystem - you follow new model releases, experiment with new tools as they land, and stay current out of genuine curiosity
  • Experience making a design system legible to AI coding tools, through machine-readable documentation, token linting, or visual regression testing that keeps generated UI on-system
  • Experience with eval systems, retrieval, agent orchestration OR ML in production
  • Background building client portals, CRMs, or case management systems
  • Familiarity with legal tech or other regulated industries

This is for you if....

  • You treat AI tools as core to how you architect and ship software.
  • You have real depth in at least one area, plus the self-teaching ability to pick up unfamiliar systems and contribute there competently.
  • You move with speed, thrive with ownership, and prefer outcomes over process.
  • You want to build infrastructure that makes legal services more accessible to people.
  • This is not for you if....
  • You do your best work with clear processes and defined guardrails already in place. You're earlier in your journey with AI-augmented development and want more time to build that muscle first.

About Manifest

Manifest OS is an AI-native company on a mission to replace the billable hour and make legal services more accessible for American businesses and consumers. We power the next generation of AI-native law firms with one unified global brand, a proprietary technology platform, and a centralized back office - enabling lawyers to eliminate the administrative burden and focus on delivering exceptional outcomes for their clients. Manifest OS has raised a $60M Series A from Menlo Ventures, Kleiner Perkins, First Round, and Quiet Capital.

Read the original posting

From Manifest OS's careers page, first listed on Rolev.ai on October 17, 2026. Rolev.ai is not the employer.

How Rolev.ai helps with this application

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Common questions

Where is the Design Engineer job at Manifest OS located?

This Design Engineer position at Manifest OS is located in New York City, NY (On-site). Always check Manifest OS's application page for specific state eligibility or relocation policies.

What qualifications are required for Design Engineer at Manifest OS?

For the Design Engineer role, Manifest OS highlights 7+ years of relevant experience; experience with TypeScript, React, PostgreSQL, design systems, relational database design. Rolev.ai can score your existing resume against these requirements and show any skill gaps before you apply.

How do I apply for the Design Engineer position at Manifest OS?

This listing links directly to Manifest OS's Ashby application page. You can apply directly on Manifest OS's site, or use Rolev.ai to check your resume fit, generate a zero-hallucination tailored resume and cover letter for this posting, and autofill the Ashby application form in 1 click with the Rolev.ai Chrome extension. You always review the form and press Submit yourself.