• Wordware (YC S24) ) is a toolkit that enables anyone to build, iterate, and deploy their AI stack easily. Our unique approach is centered around Natural Language Programming. Long term we see ourselves as an AI Operating System (aiOS) that acts as an orchestration layer for LLMs, databases, and tools.
• Sign up for free using this link: app.wordware.ai
• Primary Tool for Millions of AI Engineers coming to the market in the next 5 years
• Our users range from AI Tinkerers (free tier) to small startups (for example – 7 YC clients on Company Plan – 899 USD/month) ending at bigger enterprises (Instacart is a client)
• ⁠In the last 2 months, we went viral a couple of times:
  • We built twitter.wordware.ai, demonstrating the potential of our platform. 6.5M users and still counting.
  • Our Product Hunt launch went well (7000 upvotes; we even broke their servers)
• Since our launch (2nd of August) we grew from 10k users on our main product, to over 300k today.
• Repeat founders (Filip Kozera and Robert Chandler) both with exits
• They’ve known each other for the last 10 years following their research at Cambridge. They have been building companies in Transformers and AI Ops. They have worked full-time on companies together for the last 3 years.
• The Wordware team is 9 ppl all based in SF.
• Product + Community Led Growth

note: we're in hustle mode. we're shipping as fast as we can. this is not the kind of job you can cruise and 9-5. only apply if you want to grind, work late nights, and be part of a generational company. We are an onsite company (SF), expect a big house where the founders live, free food, beers and cool team activities.

So we are here, you are looking for a job at a startup huh?

⁉️ What’s it going to be like ⁉️

In Shackleton's famous words: “People wanted for hazardous journey. Low wages, bitter cold, long hours of complete darkness. Safe return doubtful. Honour and recognition in the event of success.”

• Why tho?

  Risk + Excitement + Hard Work == Startup. Sure, you could join a big company and make decent money but it's that constant thrill of hope, the addictive energy that makes Robert and I come back to startups over and over again 😵‍💫

  To thrive here, you’ve got to embrace this delulu universe, where the victories give us hope and the failures make us want it even more. Yes, we work late hours and often deal with some bullshit, but you'll be part of something bigger and even more, you will have a direct impact on EVERYTHING.

  If you're ready to roll up your sleeves, identify your own features to build, and find your own problems to solve, then come on in. Grab a beer and a slice of pizza, and dive into creating the future of natural language programming and AI agents. Together, we'll revolutionize the way we work. Green Light. 🟢

So, what is Wordware?

***Wordware** is a prompt-first programming language that can be used by non-developers (AI Engineers). We merge concepts like loops, logic and functions from the world of classical programming with the non-deterministic nature of Language Models. It’s exposed in a web-hosted IDE with features like sharing, forking and API deployment.*

Sign up — try the onboarding flow

Try some prompts on app.wordware.ai/explore ← This is important and it is expected that you should have played around with wordware before you apply

⚠️ Please read first

• This is a full-time, in-person role based in San Francisco (Presidio) - we work from the office 5 days a week.
• You must be based in the Bay Area or willing to relocate before starting.
• We require US work authorisation , but are open to O-1 visa sponsorship for truly exceptional candidates.

About Wordware

Wordware is an IDE for building AI agents using natural language.

It looks and feels like Notion, but lets you design, test, and deploy AI systems in real time - without writing code.

Our mission is to bring structure and joy to human–AI collaboration.

We’re building a generational company that empowers the next billion knowledge workers to create with AI - not by writing code, but by expressing intent.

We’re backed by Spark Capital, Felicis, and Y Combinator ($30M seed round - the largest in YC history).

We work hard, move fast, and don’t take ourselves too seriously. It’s intense, but it’s also fun - at Wordware, you’ll do the best work of your life alongside people you genuinely like.

What You’ll Do

You’ll design, build, and scale the backend systems that power Wordware — from real-time execution infrastructure to LLM orchestration and API integrations.

We’re still a small team, and the product is early — you won’t just be optimizing endpoints; you’ll help shape the foundation of the platform and how AI is built for the next decade.

Here are a few examples of the kinds of things you might work on:

• Extend our executor: the runtime that turns natural language into live, traceable, long-running agent workflows — with pause/resume, retries, and real-time responsiveness.
• Contribute to the Wordware programming language — our internal DSL for expressing logic, control flow, and agent interactions in plain English.
• Design infrastructure for running thousands of concurrent AI agents, scaling from zero to high traffic in seconds.
• Integrate external APIs like Slack, Notion, and Google Sheets — handling schema validation, error handling, and auth flows.
• ${your ideas}.

Stack

Node.js, TypeScript, PostgreSQL, Cloudflare Workers, Durable Objects, Redis.

Who You Are

Minimum

• You have 4+ years of engineering experience , with a strong track record of shipping production systems.
• You’re fluent in TypeScript or Node.js , and have experience designing and maintaining APIs, databases, and infrastructure.
• You’ve built systems that scale and know how to handle load, retries, and observability in the real world.
• You have a deep understanding of SQL — not just queries, but schema design, migrations, and performance tuning.
• You’re comfortable with ambiguity , unblock yourself, and make thoughtful architecture decisions quickly.
• You thrive in a fast-paced, high-trust startup environment and enjoy owning complex technical challenges.

Bonus (but not required)

• You’ve worked on execution engines, compilers, or custom DSLs.
• You’ve built or manipulated ASTs , interpreters, or schema-based transformation pipelines.
• You’ve worked with Cloudflare Workers, Durable Objects, or other serverless compute platforms.
• You’ve integrated deeply with third-party APIs and built robust systems around external failures.
• You’ve been a founder or early team member and know what it means to build under pressure.

The Process

We keep our process simple. Exceptional candidates go from first touch to offer within 2 weeks.

1. Application
2. 15-minute intro call
3. 45-minute technical interview
4. System design interview
5. Final conversation
6. Work trial

• Full-stack Typescript, Next.js, React and SST serverless on AWS/Cloudflare
• Using TipTap as the core of our IDE with Y.js for collaboration
• PartyKit (Cloudflare Durable Objects) for Y.js websockets and likely for future orchestration of pipelines
• Open source LLMs hosted by Together AI (we’re a customer story on their website) + Groq + OpenAI/Anthropic/Mistral/Google/Cohere/Perplexity for proprietary LLMs