Wordware
Senior Full Stack Engineer (Back-End)
$180K–$240K
San Francisco · Senior · Full-time · Posted Mar 9, 2026
- Experience
- 5+ years of engineering experience.
- Visa sponsorship
- Requires US work authorization; open to O-1 or J-1 visa sponsorship for exceptional candidates.
About the job
Build and operate backend and full-stack features for Wordware’s AI software, including agent infrastructure, APIs, real-time workloads, and user-facing interfaces.
What you'll do
- Build sandbox infrastructure for agent code execution, with process isolation, resource limits, and secure credential handling.
- Design deployment and migration pipelines and instrument real-time workloads, including streaming, task queues, and model routing.
- Ship backend capabilities and integrations, and improve logging, tracing, monitoring, and incident response.
What they ask for
- 5+ years of engineering experience building and operating backend systems in production; on-call experience.
- Fluency in TypeScript and ability to work across the stack, with a backend focus.
- Production experience building real-time systems, such as WebSockets, SSE, event streaming, or message queues.
- Distributed systems intuition and experience shipping infrastructure to real users.
Nice to have
- Experience with Cloudflare Workers, Durable Objects, or edge serverless computing.
- Experience building agent systems, LLM model routing, or tool-use architectures.
Pay
$180K–$240K USD base salary
Tools
TypeScript, Cloudflare Workers, Durable Objects, Hono, Drizzle ORM, Postgres, Zod, Vercel AI SDK
AI focus
Build agent infrastructure and capabilities, including code execution, LLM provider routing, tool integrations, and memory indexing.
Model-written summary · the original posting is authoritative