Ingénieur(e) Full Stack Senior, HTS Assist// Senior Full Stack Engineer (Realtime & Voice) Customer Experience Platform

Hopper
Montreal
Workplace: RemoteFull timeFunction: Customer Success & Account ManagementExperience: 6+ yearsSkills: ["Ownership","Mentoring","Communication","Problem-solving","Iterative delivery"]

Own the realtime and voice layer end to end for HTS Assist, Hopper’s agentic AI travel assistant. Lead integrations across telephony/CPaaS, continuous speech-to-text and text-to-speech pipelines, and realtime model orchestration with clear latency and quality budgets. Build across the stack with React/TypeScript, Scala and Python services, and GCP, designing for multi-tenant scale, safety/compliance, and revenue-critical reliability through observability and incident response.

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Hopper
Hopper
4 days ago

Ingénieur(e) Full Stack Senior, HTS Assist// Senior Full Stack Engineer (Realtime & Voice) Customer Experience Platform

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Source: Company careers pageValidated by: Fursa AI
Last checked: 10 hours agoStatus: Live

Job Summary

Own the realtime and voice layer end to end for HTS Assist, Hopper’s agentic AI travel assistant. Lead integrations across telephony/CPaaS, continuous speech-to-text and text-to-speech pipelines, and realtime model orchestration with clear latency and quality budgets. Build across the stack with React/TypeScript, Scala and Python services, and GCP, designing for multi-tenant scale, safety/compliance, and revenue-critical reliability through observability and incident response.
Location: Montreal
Workplace: Remote
Employment Type: Full time
Job Function: Customer Success & Account Management
Seniority: Mid level

Key Responsibilities

  • •Own the voice channel end to end, including telephony and CPaaS integrations and streaming speech-to-text/text-to-speech pipelines with realtime model orchestration and latency/quality budgets.
  • •Build product features across the stack: web chat UIs in React/TypeScript, back-end services in Scala and Python, and infrastructure on GCP.
  • •Design multi-tenant architecture so a single codebase serves multiple partners through configuration.
  • •Implement safety and compliance mechanisms for audited enterprise partners, including guardrails, content filtering, and PII redaction integration points.
  • •Maintain revenue-critical deployments through observability, alerting, incident response, and SLA performance.

Pay and Benefits

Perks:Health InsuranceEquity401kParental LeavePaid LeaveTravel AllowanceHome Office

Key Requirements

  • •More than 6 years of software engineering experience with senior-level ownership of production systems and broad full-stack range.
  • •Hands-on experience with realtime systems such as voice applications, WebRTC/SIP, streaming media, or comparable low-latency products.
  • •Strong modern front-end skills (React, TypeScript) and back-end expertise (Scala/JVM and/or Python), plus cloud infrastructure experience (GCP or AWS).
  • •Experience designing, building, and maintaining RESTful APIs, microservices, or event-driven systems.
  • •Ability to use AI tooling as part of the programming workflow and to review, correct, and take responsibility for what’s deployed.
Experience:6+ years
Skills:OwnershipMentoringCommunicationProblem-solvingIterative delivery
Languages:French
Tech Stack:ReactTypeScriptScalaPythonGCPAWSTwilioAmazon ConnectWebRTCSIPRESTful APIsMicroservicesStreaming mediaOpenAI RealtimeDeepgramElevenLabsWhisperGenesysLiveKitCPaaS

Company Brief

Hopper
Hopper is a mobile-first travel marketplace and travel-tech provider (HTS) that uses machine learning and fintech ancillaries (Price Freeze, disruption protection) to power consumer bookings and white-label partner travel portals globally.
Industry: TravelTech
Company Size: Large (251 to 1,000 employees)
Revenue: USD 500M to 1B
Growth: Scaleup
Valuation: Unicorn (USD 1B+)
Funding: Series E+
Headquarters: Montreal, Canada
Founded: 2007
Glassdoor
Glassdoor: 3.2
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