# Senior Full Stack Engineer (Realtime & Voice) Customer Experience Platform at Hopper

- Company: Hopper
- What the company does: Inference for Voice. Backed by Y Combinator.
- Company website: https://withhopper.com
- Type: Startups (AI role)
- Level: Senior
- Location: Austin - Remote
- Work setup: Remote
- Posted: 2026-08-25
- Apply by: 2026-10-09
- Apply: https://jobs.ashbyhq.com/hopper/4287f43f-5c38-48b1-9508-ec0268217b99
- Page: https://www.1752.vc/careers/jobs/hopper-senior-full-stack-engineer-realtime-and-voice-customer-experience-platfor/

## About the role

HTS Assist is Hopper's agentic AI assistant for travel, resolving flight changes, cancellations, refunds, and bookings over chat and voice for some of the world's largest travel brands. We're looking for a senior full stack engineer to anchor this product, owning the realtime and voice layer end to end while building across React/TypeScript front ends, Scala and Python services, and cloud infrastructure.

## What they're looking for

- 6+ years of software engineering experience, with senior-level ownership of production systems and genuine full-stack range
- Hands-on realtime systems experience, such as voice applications, WebRTC/SIP, streaming media, or comparable low-latency products
- Strength in a modern front end (React, TypeScript) and depth on the backend (Scala or another JVM language, and/or Python), along with cloud infrastructure experience on GCP or AWS
- A track record designing, building, and maintaining RESTful APIs, microservices, or event-driven systems
- Familiarity using AI coding tools as a standard part of their workflow, with the judgment to review, correct, and own everything that ships
- An operable-systems mindset, covering SLAs, observability, on-call rotations, and rollback plans

Tags: CX