Principal Full-Stack Software Engineer

Subquadratic

Principal Full-Stack Software Engineer at Subquadratic developing LLM capabilities and leading core platform development. Collaborating cross-functionally on AI integration and developer experience for customer-facing solutions.

Posted 4/12/2026full-timeRemote • California • 🇺🇸 United StatesLeadWebsite

Tech Stack

Tools & technologies

AWSCloudDistributed SystemsDynamoDBGoGoogle Cloud PlatformJavaScriptNode.jsPostgresPythonReactRedisTypeScript

About the role

Key responsibilities & impact

Drive the future of Subquadratic’s customer-facing stack.
Architect the full-stack systems required to stream real-time audio and LLM tokens to the browser.
Build self-serve onboarding flows, interactive API playgrounds, and observability dashboards.
Partner directly with Product and Research leadership to translate experimental AI capabilities into stable, production-ready product features.

Requirements

What you’ll need

Deep expertise in TypeScript/React (performance tuning, state management, visualization)
Strong backend fluency in Python, Go, or Node.js
Proven ability to design scalable architectures and lead complex builds end-to-end
Solid understanding of distributed systems fundamentals—caching strategies (Redis/Memcached), database design (Postgres/DynamoDB), and cloud infrastructure (AWS/GCP)
Understanding the constraints of deploying AI: context windows, token streaming, latency budgets, and cost management

Benefits

Comp & perks

Health insurance
Flexible work arrangements
Professional development

ATS Keywords

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Hard Skills & Tools

TypeScriptReactPythonGoNode.jsscalable architecturesdistributed systemscaching strategiesdatabase designcloud infrastructure

Soft Skills

leadershipcollaborationcommunicationproblem-solving