Sr. SDE (Email)
Core
Own the end-to-end Email platform (Vue.js apps, Node.js/NestJS services, sending infrastructure, and AI/LLM capabilities) serving 1M+ businesses and 40M+ daily emails.
Role type
Senior Staff Software Engineer (Email Platform)
Builds
Email composition, sending infrastructure, API-first platform, and AI-powered email features
Domain
SaaS / Email Infrastructure / AI
Deliverable
production ML models | product features
Required skills
Node.js (TypeScript), Vue.js, System Architecture, Data Modeling, Distributed Systems, AI/LLM Integration, API Design, Observability
Preferred skills
ClickHouse, MongoDB, Firestore, Redis, CDN, Test-Driven Development
Technologies
Vue.js, Node.js, NestJS, ClickHouse, MongoDB, Firestore, Redis, CDN
Responsibilities
Design and own modules end-to-end from architecture to post-launch stability; Build and evolve sending infrastructure (IP pools, domains) to maximize inbox placement; Integrate LLMs while managing token cost and latency; Optimize frontend rendering and backend queries at scale; Ensure data integrity with idempotent processing and robust error handling.
Seniority
Senior, hands-on IC