Senior Software Engineer TWE40822 - twentyAI : Job Details

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This range is provided by twentyAI. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

$180,000.00/yr - $300,000.00/yr

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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
• Bring 4+ 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
• Experience at a high-growth SaaS startup
• Familiarity with OpenAPI, Conjure (Palantir), or Smithy (AWS)
• Background building tools or platforms used by other developers
• Microservices: Express (Node.js), FastAPI (Python)
• Anthropic + Bedrock (LLM)
• 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.

Seniority level

• Seniority levelMid-Senior level

Employment type

• Employment typeFull-time

Job function

• IndustriesSoftware Development

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Medical insurance

Vision insurance

401(k)

Pension plan

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