Hopper
Senior Full Stack Engineer (Realtime & Voice) Customer Experience Platform
Remote role where the employee must remain based in a particular country.
Spain only
Employer listed it 4 weeks ago · Added 4 days ago
Been open since 4 weeks ago, still being checked, but it has been live a while.
Salary
Not stated
Location
Spain only
Timezone
CET ±2
Contract
Full-time
Experience
Senior
Category
Customer Support
This employer didn't state pay. Jobs like this usually pay around $125k–$175k a year, a typical range taken from 128 senior-level customer support roles on Nomaders that do state pay. It's a guide, not an offer.
Remote flexibility
Work from home
This is a remote role, but the employee must be based in Spain. It is work from home rather than work from anywhere.
What the employer says
- Source listing states candidate location: "Spain - Remote, Madrid - Remote, Barcelona - Remote, Remote"
What Nomaders makes of it
- Residency required in Spain
- Payroll and tax are likely handled in that country only
The quotes above are the employer's own words; the reading is ours. Always check the original listing and employment terms before working from another country.
About the role
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. 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
An ideal candidate has
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
Perks and benefits of working with us
Well-funded and proven startup with large ambitions, competitive salary, upsides of pre-IPO equity packages
Hopper covers the cost of employee premiums for private medical and dental coverage
Requirements
The employer hasn't listed requirements separately, they're described in the role summary above and on the original listing.
Benefits
- ·Well-funded and proven startup with large ambitions, competitive salary, upsides of pre-IPO equity packages
- ·Hopper covers the cost of employee premiums for private medical and dental coverage
- ·Hopper also offers private life and accident coverage
- ·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
How to apply
- 1Check the flexibility label above, work from home, matches where you plan to live and work.
- 2Tailor your CV to the role at Hopper, mentioning your remote working experience and working hours (CET ±2).
- 3Apply directly on the employer's careers page using the button below. Nomaders never handles your application.
Found 5d ago. Last checked today. Always confirm the details on the original posting, salary and location can change after publication.
Listing sourced from Company boards.
Similar roles
Other open customer support roles with comparable remote rules.
Free to apply, no account needed.
Typically $125k–$175k · You'll be taken to the employer's careers page.