Senior Frontend Software Engineer Fraud
04810, Madrid, Andalucia, España
Publicado en 2025-12-14
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Desarrollo de Software
Ingeniero de Software, Desarrollador de full-stack, Desarrollador/a Front End, Desarrollador/a Back-end
About the job
Hopper Technology Solutions (HTS) Checkout combines market-leading payment services, best-in-class fraud detection, and digital wallet capabilities to enhance the travel experience for users and drive revenue for partners. Our hosted checkout solution offers global coverage and currency support, a comprehensive suite of payment methods, industry-leading anti-fraud technology, and an integrated wallet designed to boost loyalty.
We are seeking a frontend software engineer with expertise in building high-quality web applications from the ground up. As part of a cross‑functional team of exceptional engineers and product managers, you will develop new features and provide best‑in‑class support to help our partners scale their businesses.
Tech stack- Our frontend will be web apps using React + Type Script, and you will play a large part in evolving this
- Our backend systems are written in Scala, and we use a suite of GCP services
- Design, build and review code for our HTS Checkout web frontend
- Operate autonomously but work closely with your fellow engineers as well as PM to ensure high alignment
- Explore engineering improvements for the team and the product
- Collaborate cross-functionally with the product team and other Hopper teams
- Our group operates with very few meetings and emphasizes strong alignment and asynchronous decision making
- Senior‑level experience & familiarity with React
- The ability to effectively drive towards a solution in a thoughtful and creative manner
- The ability to work autonomously, iterate on solutions, and manage different contexts
- Dealt with ambiguity and can balance building out multiple features at once without jeopardizing the quality of the code
- 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 Flex Desk AND Work‑from‑home stipend.
- Unlimited PTO.
- Hopper offers a monthly cash allowances for gym memberships and to cover home‑office expenses for a comfortable remote working experience.
- Carrot Cash travel stipend.
- Entrepreneurial culture where pushing limits and taking risks is everyday business.
- Open communication with management and company leadership.
- Small, dynamic teams = massive impact.
#LI-REMOTE
More about HopperAt 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 millennia ls.
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…
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