Senior Full-Stack & Real-Time Voice Engineer

Hopper; Madrid; Presencial; EUR 120.000 - 170.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Private medical and dental coverage

Private life and accident coverage

Generous parental leave

FlexDesk coworking & WFH stipend

Unlimited PTO

Gym membership stipend

Carrot Cash travel stipend

Equity / pre-IPO upside

Open communication culture

Small, dynamic teams

Descripción de la vacante

Hopper is seeking a senior full stack engineer to anchor HTS Assist, our agentic AI assistant for travel. You will own the realtime and voice layer end to end, building React/TypeScript front ends, Scala/Python services, and cloud infrastructure.

The ideal candidate has 6+ years of experience and a track record with realtime/low-latency systems, RESTful APIs, and multi-tenant architectures. You will contribute to safety, observability, and partner integrations, while mentoring others in a fast,

Formación

• 6+ years of software engineering with senior ownership of production systems.
• Hands-on realtime voice applications or low-latency tech experience.
• Strong React/TypeScript frontend and backend in Scala or Python, with cloud infra on GCP/AWS.
• Experience designing RESTful APIs, microservices or event-driven systems.

Responsabilidades

• Own the voice channel end to end, including telephony integrations and streaming pipelines.
• Build features across the stack: React/TypeScript frontend, Scala/Python backend, and cloud infra.
• Design for multi-tenant scale with a single codebase configured for partners.
• Develop safety, compliance, guardrails, and PII redaction integration points.
• Maintain deployments with observability, alerts, incident response, and SLAs.
• Configure platform capabilities for partner telephony integrations and go-lives.
• Raise engineering bar via code reviews, architecture reviews, and mentoring.

Conocimientos

Senior software engineering

Realtime/low-latency systems

React/TypeScript

Scala/Python backend

RESTful APIs / microservices

AI coding tools familiarity

Observability & SRE mindset

Herramientas

Twilio

Amazon Connect

CPaaS platforms

WebRTC

Descripción del empleo

Hopper is seeking a senior full stack engineer to anchor HTS Assist, our agentic AI assistant for travel. You will own the realtime and voice layer end to end, building React/TypeScript front ends, Scala/Python services, and cloud infrastructure.

The ideal candidate has 6+ years of experience and a track record with realtime/low-latency systems, RESTful APIs, and multi-tenant architectures. You will contribute to safety, observability, and partner integrations, while mentoring others in a fast,