Senior Realtime & Voice Full-Stack Engineer

Kibbi Technologies Inc.

Toronto

On-site

CAD 200,000 - 250,000

Full time

8 days ago

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Benefits offered by this job

Competitive salary

Group insurance premiums covered

Life, disability coverage

HSA for medical/dental

Telemedicine access

RRSP plan

Parental leave

Unlimited PTO

Carrot Cash travel stipend

FlexDesk/co-working space

Remote work stipend

Entrepreneurial culture

Open management

Small teams with big impact

Job summary

Hopper is seeking a senior full stack engineer to anchor HTS, owning the realtime and voice layer end to end. You will work across React/TypeScript front ends, Scala and Python services, and cloud infrastructure on GCP/AWS, with a focus on scalable, multi-tenant architecture and safety/PII compliance.

The role requires ownership of production systems and a proven ability to ship high-quality, low-latency features.

Qualifications

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
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
Familiarity with travel industry technologies (PSS/GDS, hotel PMS/CRS) is a plus, though not required

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
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
Familiarity with travel industry technologies (PSS/GDS, hotel PMS/CRS) is a plus, though not required