Sr.SDE - Conversations

We’re hiring a Senior Full Stack Engineer to design, build, and scale the backend systems and frontend interfaces that power the Threads & Composer experience inside HighLevel Conversations. You’ll spend most of your time on backend and API design, data flows, and performance — while still owning the Vue 3 UI layer end-to-end. Your work will touch critical paths that process billions of messages per month, demanding reliability, throughput, and correctness at scale.

• Backend ownership: Design and maintain Node.js/NestJS services for message storage, retrieval, and state sync
• API design: Build well-typed REST contracts for Threads and Composer operations
• Data layer work: Model and optimize MongoDB/Firestore schemas for high read/write volumes and atomic updates
• Scalability & resilience: Implement queues, caching, and rate limiting to handle burst traffic gracefully
• Frontend integration: Ship modular Vue 3 UIs that consume your APIs efficiently and handle realtime state updates