Note: The job is a remote job and is open to candidates in USA. Hopper is a global travel platform and travel technology company powering consumer and partner travel experiences through its app, website, and Hopper Technology Solutions business. The Senior Full Stack Engineer will own the realtime and voice layer of HTS Assist while building across React/TypeScript front ends, Scala and Python services, and GCP infrastructure. The role also involves multi-tenant architecture, safety and compliance systems, observability, incident response, partner telephony integrations, and engineering mentorship.
Responsibilities
- 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
Skills
- 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
- The ability to break down complex problems, make pragmatic tradeoffs, and ship iteratively, backed by strong communication across product, design, and operations
- Familiarity with travel industry technologies (PSS/GDS, hotel PMS/CRS) is a plus, though not required
- Bonus points for conversational AI or LLM orchestration experience, including speech technologies such as Deepgram, ElevenLabs, Whisper, or OpenAI Realtime
- Bonus points for working knowledge of cloud telephony or CPaaS platforms such as Twilio, Amazon Connect, Genesys, or LiveKit
- Bonus points for experience building customer service, CRM, contact center, or workflow automation tools
Benefits
- Pre-IPO equity packages
- Unlimited PTO
- Carrot Cash travel stipend
- Access to co-working space on demand through FlexDesk
- Work-from-home stipend
- Very generous parental leave, much above industry standards
- 100% employer-paid Medical, Dental and Vision coverage for employees
- Access to Disability and Life insurance
- Health Reimbursement Account (HRA)
- DCA/FSA
- Access to a 401k plan
- Remote work arrangement
Company Overview
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