Replit
Senior AI Builder
Foster City, CA · Senior · Full-time
Sponsorship not specifiedDetected 4 days ago
JavaScriptTypeScriptPythonReactReact NativeCode ReviewSQLNLPLLMsRAGProject ManagementCRMCustomer SupportLeadershipCommunication
About the role
- The Member of Technical Staff (AI Builder) is a full-time builder role with substantial autonomy.
- This is not a role for someone who wants a narrow, well-defined lane.
- You do not need to have run every function, but you need to respect why each one exists and be able to reason about it like an operator, not just an engineer.
Responsibilities
- Design, architect, and ship custom AI-powered internal platforms that serve specific operational needs across Replit's functional departments, including but not limited to People Operations, Customer Support, Sales, Recruiting, Marketing, Finance, and Executive Operations.
- Own platform development end-to-end, including front-end interfaces, back-end services, data models, third-party integrations, and AI model orchestration.
- Design and implement evaluation frameworks for AI features, including test datasets, scoring rubrics, and regression tests, so that AI-driven workflows stay reliable in production.
- Optimize AI systems for cost and performance, including the appropriate use of lighter-weight models for qualification passes, batching strategies for high-throughput workloads, and caching architectures.
- Treat each internal department as its own startup: understand its goals, its constraints, and the metrics that define whether it is succeeding.
- Partner directly with department leads to identify operational inefficiencies, scope solutions, and prioritize the work that creates the most leverage.
- Conduct stakeholder interviews, lead requirements-gathering sessions, and translate qualitative feedback into iterative product improvements.
Requirements
- You can engage credibly with both deeply technical people and non-technical stakeholders, often in the same afternoon.
- You bring diplomacy, creativity, technical knowledge, and business acumen, and you know when each one is the tool the moment calls for.
- Working proficiency in modern software engineering practices, including version control, code review, deployment pipelines, and production debugging.
- Hands-on experience with one or more large language model providers and their APIs, tool-calling interfaces, and structured output mechanisms.
- Demonstrated experience designing prompt and tool-call architectures, conducting model selection across providers, and optimizing AI systems for cost and latency.
- Programming proficiency in Python and TypeScript or JavaScript, including familiarity with relevant frameworks for AI application development.
- Experience with relational databases, SQL, and modern data tooling.
- Strong written and verbal communication skills, including the ability to present technical work to non-technical stakeholders.
- Demonstrated ability to operate with autonomy in ambiguous, fast-moving environments.
- Bachelor's or master's degree in Technology Management, Computer Science, Software Engineering, Information Systems, or a closely related technical or technology-business hybrid field. Equivalent foreign degrees acceptable subject to credential evaluation. Exceptional non-traditional backgrounds with a strong shipped portfolio will be considered.
- A demonstrated portfolio of shipped software products, including AI-powered applications, and the ability to discuss technical architecture, design trade-offs, and engineering decisions in detail.
- Experience either running your own business or working at a fast-scaling startup, with real exposure to how the business operated end-to-end.
Nice to have
- Prior experience as a founder, co-founder, or early team member at a venture-backed startup, particularly one with an AI-native product.
- Prior experience in technology investment analysis or operational consulting, with a demonstrated ability to evaluate business operations and identify high-leverage interventions.
- Experience designing and shipping internal tools at a high-growth technology company.
- Multilingual proficiency, particularly in languages relevant to Replit's international customer base, including Italian, Portuguese, Spanish, or other major commercial languages.
- Experience with mobile application development frameworks, including React Native and Expo.
- This position is based in Foster City, California, with secondary work performed at the company's San Francisco, California office.
- Occasional domestic travel may be required for company offsites and customer engagements.
- 💹 401(k) Program with a 4% match (US Only)
Skills
- With millions of users worldwide, Replit is democratizing software development by removing traditional barriers to application creation.
Compensation
- 💰 Competitive Salary & Equity
Company info
- Replit Blog https://blog.replit.com/
- Amjad TED Talk https://youtu.be/kCudFI4tcpg?si=l4ViCejV_f2RZkDi
- Operating Principles https://blog.replit.com/operating-principles
- Reasons not to work at Replit https://blog.replit.com/reasons-not-to-join-replit
This listing is sourced directly from Replit's careers page and normalized into a canonical job model.