--- title: 'Senior Full Stack Engineer (Realtime & Voice) Customer Experience Platform at Hopper' canonical: 'https://feeny.ai/job/senior-full-stack-engineer-realtime-voice-customer-experience-platform-hopper-rtqzba74wt6x' type: 'job' last_seen: '2026-09-06' --- # Senior Full Stack Engineer (Realtime & Voice) Customer Experience Platform at Hopper - **Company:** [Hopper](https://feeny.ai/companies/hopper) - **Location:** New York, NY - **Compensation:** $200k–$250k - **Employment:** full-time - **Work type:** remote - **Posted:** 2026-08-25 - **Last confirmed live:** 2026-09-06 - **Apply:** https://jobs.ashbyhq.com/hopper/4b87c936-a0e4-4c83-93b9-c74d1fefb24e ## Job description ## 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 and the upsides of pre-IPO equity packages - Unlimited PTO - Carrot Cash travel stipend - Access to co-working space on demand through FlexDesk and a work-from-home stipend - Please ask us about our very generous parental leave, much above industry standards - Entrepreneurial culture where pushing limits and taking risks is everyday business - Open communication with management and company leadership - Small, dynamic teams, massive impact - 100% employer-paid Medical, Dental and Vision coverage for employees - Access to Disability and Life insurance - Health Reimbursement Account (HRA) - DCA/FSA and access to a 401k plan ## About Hopper At Hopper, we are on a mission to become the leading travel platform globally, powering Hopper's mobile app, website and our B2B business, HTS (Hopper Technology Solutions). By leveraging massive amounts of data and advanced machine learning algorithms, Hopper combines its world-class travel agency offering with proprietary fintech products to bring transparency, flexibility and savings to travelers globally. We have developed several unique fintech solutions that address everything from pricing volatility to trip disruptions, helping people travel better and save more on their trips. The Hopper platform serves hundreds of millions of travelers globally and continues to capture market share around the world. The Hopper app has been downloaded over 120 million times and has become largely popular among younger travelers, with 70% of its users being Gen Z and millennials. While everyone knows us as the Gen Z and Millennial travel app, Hopper has evolved to become much more than that. In recent years, we've grown into a travel fintech provider, commerce platform, and global travel agency that powers some of the world's largest brands. Through HTS, our B2B division, the company supercharges its partners' direct channels by integrating our fintech products on their sites or powering end-to-end travel portals. Today, our partners include leading travel brands like Capital One, Nubank, Air Canada, and many more. Here are just a few stats that demonstrate the company's recent growth: - Billions of dollars worth of travel and travel fintech are sold through Hopper and HTS' channels every year. - Our fintech products, including Cancel for Any Reason and Flight Disruption Assistance, have exceptionally strong CSAT because the terms are always clear, and customers receive instant, no-questions-asked resolutions. - Almost 30% of our app customers purchase at least one fintech product when making a booking, and consumers are 1.6x more likely to repurchase if they add fintech to their booking versus if they booked just travel. - Given the success of its fintech products, Hopper launched a B2B initiative, HTS (Hopper Technology Solutions), which represents more than 75% of the business. Through HTS, any travel provider (airlines, hotels, banks, travel agencies, etc.) can integrate and seamlessly distribute Hopper's fintech or travel inventory on their direct channels. As its first HTS partnership, the company partnered with Capital One to co-develop Capital One Travel, a new travel portal designed specifically for cardholders. Other HTS partners include Air Canada, Uber, CommBank, Nubank, Flair Airlines and many more. Hopper has been named the #1 most innovative company in travel by Fast Company. Hopper has been downloaded over 120 million times and continues to have millions of new installs each month. Hopper is now the #3 largest online travel agency in North America and 70% of our app customers are Gen Z and millennial travelers. Hopper has raised over $750 million USD of private capital and is backed by some of the largest institutional investors and banks in the world. HTS is primed to continue its growth as the leading travel ecommerce provider in a $1 trillion online shopping category. The Hopper app and website will also continue to be the preferred travel provider for Gen Z and Millennials. Come take off with us! #LI-Remote This role utilizes automated decision-making systems to assess candidate suitability. Under local regulations, you have the right to understand the principal factors used in this assessment, request a correction of your data, or request a human review of any automated decision. To exercise these rights, please contact recruiting@hopper.com http://hopper.com. ## About Hopper ## Company Overview - **One-liner**: Hopper is a travel technology company that offers a mobile-first platform for booking flights, hotels, car rentals, and other travel services, and powers partner-branded channels through its B2B division HTS (Hopper Technology Solutions). - **Entity Type**: Private (last known funding: Series G in 2021, plus subsequent venture rounds; total funding $745.7M) - **Headquarters**: Montreal, Quebec, Canada (major US office in Boston, MA) - **Founded**: 2007 - **Founders**: Frederic Lalonde, Joost Ouwerkerk, Dakota Smith ## Core Business - **Primary industry**: Travel technology / Online travel agency (OTA) - **Target customers**: B2C (travelers using the Hopper app/website) and B2B (airlines, hotels, financial institutions via HTS platform) - **Mission or purpose**: To use data science and behavioral economics to take the risk and anxiety out of travel planning (implied from their product features like price prediction and cancellation flexibility). ## Products & Services - **Hopper App**: Mobile-first consumer platform for booking flights, hotels, and car rentals. Key features include Price Prediction, Price Freeze, Cancel for Any Reason, and disruption assistance. Type: Mobile app / OTA. - **HTS (Hopper Technology Solutions)**: B2B division that provides travel booking APIs, fintech ancillaries, and partner-branded travel portals (e.g., Capital One Travel). Type: API / Platform-as-a-Service. ## Market Standing - **Valuation/Market Cap**: Not disclosed (private company; last known secondary market transaction in Feb 2022 at $35M, but no current valuation confirmed) - **Key Metric**: Annual Revenue: $1.3B (source: LinkedIn estimate); Total Funding: $745.7M across 12 rounds - **Notable Investors/Partners**: Capital One Ventures (led $96M venture round in 2022), GPI Capital (led $175M Series G in 2021), Atlas Venture, Brightspark Ventures, La Caisse. Strategic partner: Capital One (co-branded travel portal). - **Growth Signals**: Claims to be the 3rd largest OTA in North America; expanded team globally (33 countries); acquired multiple companies (Journy, Gravy, GDX Travel, PlacePass, smooss) to build capabilities. However, headcount declined 14.3% YoY (489 employees as of mid-2026), and several senior leaders departed in early 2026. ## Competitive Advantages - **Data-driven pricing and fintech innovation**: Proprietary price prediction algorithms and financial products (Price Freeze, Cancel for Any Reason) reduce consumer risk, creating a strong moat in the OTA space. - **B2B platform (HTS)**: White-label travel solutions for banks and other partners (e.g., Capital One Travel) provide diversified revenue and distribution. - **Culture of deliberate design**: Leadership principles modeled after companies like Netflix, Amazon, and Google, emphasizing data-driven decision-making, ownership, and customer obsession (see [Culture Guide](https://hopper.com/culture/culture-guide/page)). ## Strategic Focus - **AI and fintech expansion**: Recent job postings include Principal Product Manager - AI Travel and Senior Software Engineer - AI Fintech foundation, indicating investment in generative AI and financial services. - **Global supply and partnerships**: Hiring for Sr Business Development Manager, Flights LATAM and Sr Account Executive - Fintech suggests geographic expansion and deepening of fintech partnerships. - **HTS API marketplace**: A Principal Product Manager role for HTS API Marketplace points to scaling the B2B side. ## Why Work Here - **Fully remote company**: Since 2020, Hopper has been fully remote with team members worldwide. They emphasize autonomy and ownership for leaders. - **Pre-IPO equity**: Employees can choose between stock options and RSUs, with a clear path to liquidity if the company goes public. - **Competitive compensation**: Base salary plus equity, sign-on bonus, and other incentives. They claim to “rarely lose” talent to top-tier tech companies. - **Benefits**: 100% healthcare coverage in the US and Canada (competitive offerings elsewhere), unlimited time off, $200 annual travel bonus (“Carrot Cash”), and a travel-first culture. - **Engineering culture**: Data-driven, with emphasis on analytics, narrative writing, and hands-on problem-solving. Culture is deliberately designed (see [Culture Guide](https://hopper.com/culture/culture-guide/page)). - **Current headcount decline**: ~14% YoY reduction may indicate restructuring; recent departures of several product and supply leaders could signal transition. ## Sources 1. [jobs.ashbyhq.com](https://jobs.ashbyhq.com/hopper) – Hopper job listings and compensation details 2. [hopper.com/careers](https://hopper.com/careers/?department=Product) – Careers page with benefits and culture overview 3. [linkedin.com/company/hopper](https://www.linkedin.com/company/hopper) – Company details, financials, headcount, and employee data 4. [hopper.com/culture/culture-guide/page](https://hopper.com/culture/culture-guide/page) – Detailed culture guide ## Other roles at Hopper - [Senior Full Stack Engineer (Realtime & Voice) Customer Experience Platform](https://feeny.ai/job/senior-full-stack-engineer-realtime-voice-customer-experience-platform-hopper-7rav08z8xt2f) — Ontario, Canada - [Ingénieur(e) Full Stack Senior, HTS Assist// Senior Full Stack Engineer (Realtime & Voice) Customer Experience Platform](https://feeny.ai/job/ingenieur-e-full-stack-senior-hts-assist-senior-full-stack-engineer-realtime-rnp7ertsqp3t) — Montréal, Canada - [Senior Full Stack Engineer (Realtime & Voice) Customer Experience Platform](https://feeny.ai/job/senior-full-stack-engineer-realtime-voice-customer-experience-platform-hopper-4bhc4b7kvk6a) — Ireland - [Senior Full Stack Engineer (Realtime & Voice) Customer Experience Platform](https://feeny.ai/job/senior-full-stack-engineer-realtime-voice-customer-experience-platform-hopper-1n8ne129xeh6) — Spain - [Senior Full Stack Engineer (Realtime & Voice) Customer Experience Platform](https://feeny.ai/job/senior-full-stack-engineer-realtime-voice-customer-experience-platform-hopper-r4ddqpp45qd5) — United Kingdom - [Senior Full Stack Engineer (Realtime & Voice) Customer Experience Platform](https://feeny.ai/job/senior-full-stack-engineer-realtime-voice-customer-experience-platform-hopper-85bbk7qjfpfr) — Austin, TX - [Principal Product Manager- Conversational AI](https://feeny.ai/job/principal-product-manager-conversational-ai-hopper-new-york-w4m19w3znjc2) — New York, NY - [Directeur ou directrice principal(e) de produit, IA conversationnelle// Principal Product Manager- Conversational AI](https://feeny.ai/job/directeur-ou-directrice-principal-e-de-produit-ia-conversationnelle-principal-22d0b936m0gp) — Montréal, Canada - [Principal Product Manager- Conversational AI](https://feeny.ai/job/principal-product-manager-conversational-ai-hopper-spain-zyqt1tjk0g18) — Spain - [Principal Product Manager- Conversational AI](https://feeny.ai/job/principal-product-manager-conversational-ai-hopper-united-kingdom-1yhn6kv059cd) — United Kingdom