Full Stack Engineer - Early-Stage AI Development Platform
Location: Onsite in San Francisco, CA
Salary Range: $, - $, + Equity
Stage: $30M Seed Funding (backed by Spark Capital, Felicis, and Y Combinator)
About the Opportunity
We are partnering with a pioneering startup revolutionizing AI development through an innovative all-in-one platform. Backed by $30M in seed funding, the company is developing a powerful programming language and collaborative tools that empower both technical developers and non-technical creators to build AI systems.
As a Full Stack Engineer, you'll be at the forefront of building the core product. You'll work directly with the founding team to craft the technology stack, drive product decisions, and create scalable solutions that will shape the future of AI development.
The Role:
As a Full Stack Engineer, you will:
Build end-to-end solutions: Design and develop both the front-end (React, Next.js) and back-end (TypeScript, Node.js) components of the platform.Collaborate on core platform features, including a real-time, multi-user IDE for AI workflow development and orchestration.Design and implement complex workflows for AI agents, integrating multiple LLM APIs (e.g., OpenAI, Anthropic, Mistral).Work with cloud technologies like AWS/Cloudflare to ensure scalability, reliability, and performance.Solve challenging engineering problems: Develop an executor for AI workflows that balances real-time performance with traceability, low latency, and scalability.Optimize the user experience for both technical and non-technical users by integrating multimodal tools and creating seamless workflows.Collaborate closely with users: Gather feedback, troubleshoot issues, and iterate to improve the product.Contribute to product decisions and evolve the platform to meet the needs of our diverse user base.Ideal Candidate
We're looking for a full-stack engineer who:
Has 4+ years of experience building production-ready software.Proficient in TypeScript, Next.js, React, and modern JavaScript/TypeScript frameworks.Experienced in backend development (Node.js, serverless architecture, APIs).Comfortable with cloud technologies (AWS, Cloudflare, etc.) and understands scalability challenges.Has experience working with LLM APIs (OpenAI, Anthropic, Mistral) and/or AI development.Thrives in startup environments and is able to take ownership of projects and deliver results quickly.Passionate about creating products that impact users and solving complex problems with scalable, maintainable code.Bonus Points for:
Previous founder or CTO experience in a tech startup.Familiarity with real-time collaborative tools (e.g., Y.js) and multi-agent systems.Experience in AI development or AI tooling.Why Join This Startup?
High-impact role: Help define the future of AI development and be a key player in a growing industry.Early-stage influence: Shape the product, culture, and strategic direction of the company.Competitive salary ($, - $,) and equity in a rapidly growing startup.Work in a dynamic, startup-first culture-we believe in getting things done and having fun along the way.Office just 30m from the ocean-yes, there's a sauna and crossbow competitions.Encouraging Diverse Applications
We encourage applicants from all backgrounds and experiences, including women, non-binary professionals, underrepresented groups in tech, career changers, and those returning to the workforce.
If you're excited about building the next wave of AI development tools and working in a fast-paced, high-impact environment, we'd love to hear from you!
