Software Engineer

Hopper App
Municipality of Madrid, Spain
yesterday

Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Working hours
Regular working hours
Languages
English
Experience level
Intermediate

Job location

Municipality of Madrid, Spain

Tech stack

API
Artificial Intelligence
Amazon Web Services (AWS)
Cloud Computing
Code Review
Databases
Distributed Systems
Mobile Application Software
Python
PostgreSQL
MySQL
NoSQL
Payment Gateway
Software Architecture
Software Engineering
TypeScript
Chatbots
React
Large Language Models
Multi-Agent Systems
Deep Learning
Backend
Front End Software Development
REST
Microservices

Job description

service systems, including conversational AI workflows, self-service customer journeys, internal tools used by thousands of agents, and infrastructure that enables partner-specific experiences. You'll report to a Senior Engineering Manager and work alongside engineers focused on platform services, integrations, AI orchestration, and self-service UX. Responsibilities Design, build, and improve the backend and/or full-stack systems that power HTS Assist, internal agent tools, and customer self-serve flows. Develop scalable APIs, microservices, and orchestration logic that support complex post-booking journeys across AI, chat, voice, and web. Partner with product, design, AI, and operations teams to deliver features that streamline customer experiences and enhance agent efficiency. Integrate with external systems, such as telephony, CRM, identity, or booking platforms, to support both internal use cases and partner deployments. Own features end-to-end, from technical design through

Requirements

implementation, testing, deployment, monitoring, and iteration. Contribute to architectural decisions, code reviews, reliability improvements, and ongoing enhancements to engineering best practices. Analyze system performance and user behavior to identify opportunities for automation, optimization, and cost reduction. Minimum Qualifications 3+ years of experience in software engineering, ideally building large-scale distributed systems or customer-facing applications A strong technical background with modern front-end and back-end development, distributed systems, APIs, and cloud infrastructure Experience designing, building, and maintaining RESTful APIs, microservices, or event-driven systemsExperience with databases (PostgreSQL, MySQL, NoSQL) and cloud platforms (AWS, GCP, or similar) Ability to break down complex problems, make pragmatic tradeoffs, and ship iteratively Strong communication skills and comfort collaborating with cross-functional teams Preferred Qualifications Experience with conversational AI, LLM orchestration, or automation systems Experience building customer service, CRM, telephony, contact center, or workflow automation tools Familiarity with Scala/Python, React, TypeScript, or modern front-end frameworks for engineers who want to contribute full-stack Experience integrating with external systems (e.g., telephony APIs, identity providers, payment gateways, CRMs) Knowledge of travel industry technologies (PSS/GDS, hotel PMS/CRS) is a plus, though not required More 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

About the company

About The Team The Customer Experience (CX) Product team owns the entire post-booking journey, from the moment a trip is booked through changes, disruptions, refunds, and customer support interactions. We build and operate the systems that enable fast, high-quality support at scale, including: Customer self-serve experiences within the Hopper app and partner-integrated flows Internal agent platforms that enable efficient, high-quality human resolution HTS Assist, Hopper's flagship agentic AI platform, used internally and offered as a B2B solution for global travel partners About The Job As a Software Engineer on the CX Platform team, you will design, build, and evolve the core systems behind Hopper's post-booking experience. Your work will directly impact customers, internal support agents, and the continued expansion of HTS Assist across AI-driven voice and chat. You'll collaborate closely with Product, Design, AI, Data, and Operations partners to deliver intelligent, scalable customer, 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. 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 such as Capital One, Nubank, Air Canada and many more. Billions of dollars worth of travel and travel fintech are so

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