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Frontend Engineer

Company:
twentyAI
Location:
Manhattan, NY, 10261
Posted:
June 04, 2025
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Description:

We're hiring on behalf of one of the most exciting early-stage AI software companies in the market today. Backed by Y Combinator and top-tier VCs, this NYC-based startup has already achieved proven product-market fit, serving 150+ enterprise customers and scaling rapidly.

Founded by a world-class team of engineers from Palantir, Google, and Uber, they’re building developer-first infrastructure and tools that are transforming how modern software teams build and ship products. Now, they’re looking to add a Senior Software Engineer to their elite founding team—someone who’s deeply product-minded, thrives in high-ownership environments, and wants to play a pivotal role in shaping the future of AI-driven development.

What You’ll Do

Work closely with the founding team to define product direction and shape the user experience

Drive architectural decisions and maintain a high bar for performance, quality, and scalability

Partner cross-functionally with product and design to create intuitive, developer-friendly workflows

Contribute to the evolution of the product and culture at a company that values autonomy, speed, and craft

You Might Be a Fit If You…

Bring 3+ years of hands-on engineering experience building complex products

Are product-obsessed—you care deeply about solving user problems, not just writing code

Thrive in fast-moving environments and take pride in shipping quickly without sacrificing quality

Have a keen eye for clean, scalable developer experiences

Enjoy working collaboratively but are confident operating independently when needed

️ Bonus Points For

Experience at a high-growth SaaS startup

Familiarity with OpenAPI, Conjure (Palantir), or Smithy (AWS)

Background building tools or platforms used by other developers

Tech Stack:

Next.js + Vercel (Frontend)

Claude + Bedrock (LLM)

Microservices: Express (Node.js), FastAPI (Python)

Algolia + turbopuffer (Search)

Postgres DB + Prisma ORM (Database)

AWS (Cloud)

Why This Team?

Backed by YC and some of the most respected names in venture capital

Led by proven builders from Palantir, Google, and Uber

Already working with over 150+ customers, with strong demand and product-market fit

A lean, fast-moving team where your impact will be felt immediately

Competitive compensation, meaningful equity, and a chance to help shape the early DNA of a category-defining company

Interested in learning more?

We’re partnering exclusively with this client to help grow their team. Apply here or reach out directly to start a confidential conversation.

Apply