Senior Full Stack Engineer (Realtime & Voice) Customer Experience Platform
Role Summary
Join Hopper as a Senior Full Stack Engineer to develop a real-time voice platform for a leading travel AI assistant, with opportunities for mentorship and growth.
About the Organisation
About the RoleHTS 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. The team is lean and senior, ownership is broad, and the path from your code to a traveler's phone call is short.What would your day-to-day look like
- Own the voice channel end to end, including telephony and CPaaS integrations (e.g., Twilio, Amazon Connect), streaming speech-to-text and text-to-speech pipelines, realtime model orchestration, and latency and quality budgets
- Build product features across the stack, including web chat front ends in React/TypeScript, backend services in Scala and Python, and infrastructure on GCP
- Design for multi-tenant scale, with one codebase serving many partners through configuration rather than forks
- Build the safety and compliance plumbing enterprise partners audit, including guardrails, content filtering, and PII redaction integration points
- Keep revenue-critical deployments healthy through observability, alerting, incident response, and SLA performance
- Build the platform capabilities forward-deployed engineers configure for partner telephony integrations and go-lives
- Raise the engineering bar through code review, architecture reviews, and mentoring
Working Conditions
- Well-funded and proven startup with large ambitions, competitive salary, upsides of pre-IPO equity packages
- Hopper covers 100% of the premiums for the employee for a group insurance plan through Vitality Health
- Automatic contributions when you start with Hopper through Smart Pension
- Please ask us about our very generous parental leave, much above industry standards
- Access to co-working space on demand through FlexDesk and a work-from-home stipend
- Carrot Cash travel stipend
- Unlimited PTO
- Entrepreneurial culture where pushing limits and taking risks is everyday business
- Open communication with management and company leadership
- Small, dynamic teams, massive impact
Requirements
Eligibility Criteria
This position is open to candidates worldwide, with no specific mention of sponsorship or qualifications required for applicants.
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