DoxelSan Francisco, CABackend engineer building and scaling data pipelines, APIs, and storage systems (DuckDB, PostgreSQL, Airflow) that power construction-insight applications and integrate with CV/ML models.
Build and scale the control plane for Cloudflare Workers, the serverless edge platform. Design distributed systems, high-traffic APIs, storage schemas, and own production reliability for services powering Pages and R2. Requires strong Go experience plus knowledge of observability, databases, and Kubernetes.
As a Deliverability Engineer, you will be responsible for building and maintaining core components for sending transactional and marketing emails. This role requires expertise in email deliverability, reputation, and high-volume email systems.
As a Backend Engineer on the Core Sending Squad, you will build and operate Resend’s email transport infrastructure, focusing on SMTP delivery, MTA systems, and routing. You will design systems for throttling, IP pools, and reputation-aware routing, and improve bounce classification.
Build and operate customer-facing integrations (APIs, identity federation, webhooks) connecting Kodex with third-party systems. Backend-leaning generalist with 4+ years experience in TypeScript/Node.js/React and production API experience.
Builds product for AI agent memory and context layer, focusing on backend systems, developer SDKs/APIs, integrations with tools like Slack/Notion, and agent primitives. Requires 3+ years backend/fullstack experience, Python/TypeScript fluency, and strong product judgment for onsite SF role.