Staff Software Engineer, Agent Platform
Hybrid (Foster City, CA)Full-timePosted 6mo ago
About the role
Role focused on building high-throughput backend services and infrastructure to advance Replit Agent, bridging AI core work with UX, and delivering real-time collaborative experiences between humans and AI agents.
Responsibilities
- Build high-throughput backend applications and services, like streaming chat between user and agent.
- Design a collaborative "Multiplayer Computer" that lets humans and AI agents work together on shared shells, filesystems, and state—conflict-free and in real time.
- Develop infrastructure (frontend & backend) that empowers product engineers to rapidly ship delightful user experiences.
- Design and build durable, well-crafted interfaces between the Agent and internal systems, as well as external agentic systems (MCP)
Qualifications
- 8+ years professional experience in building backend services, systems and platforms
- Someone who values simplicity and pragmatism—you think radically but ship incrementally.
- Self-directed and comfortable working autonomously.
- Collaborative and team-oriented with a strong sense of shared ownership.
Skills
Required:Backend development
Nice to have:Full-stack experienceAI-powered tooling/product experienceCollaborative editing technologiesEvent sourcing
Benefits
- Competitive Salary & Equity
- 401(k) Program with a 4% match (US Only)
- Health, Dental, Vision and Life Insurance
- Short Term and Long Term Disability
- Paid Parental, Medical, Caregiver Leave
- Flexible Time Off (FTO) + Holidays
- Commuter Benefits (In-Office & US Only)
- Monthly Wellness Stipend
- Autonomous Work Environment
- In Office Set-Up Reimbursement (In-Office Only)
- Quarterly Team Gatherings
- In Office Amenities (In-Office Only)
Last updated Oct 21, 2026. Interested? Apply on the company site.
About Replit
Build apps and sites with AI
Replit is an AI-powered platform for building professional web apps and websites.
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