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Senior Backend Software Engineer - Payments & Fraud

Spain · Job Posted February 21, 2026
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Job Description

Hopper Technology Solutions (HTS) Checkout combines market-leading payment services and best-in-class fraud detection 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 and an industry-leading anti-fraud technology. We are seeking a senior backend software engineer with experience building scalable and robust systems to join our team. 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.

Job Responsibility

  • Design, build and review code for our fraud and abuse backend platform
  • Iterate on features using Scala (no prior experience required) and technologies within GCP
  • Ship your first code in days, iterating on features in an agile manner
  • Operate autonomously but work closely with engineers and PMs to ensure high alignment
  • Collaborate cross-functionally with the product team and other Hopper teams

Requirements

  • 4+ years of experience building scalable backend systems
  • A strong understanding of distributed systems and how architectural decisions affect performance and maintainability
  • The ability to work with minimal guidance, be proactive and to handle uncertainty, ambiguity and the challenge of quickly evolving goals
  • Excelled in cross-functional teams, working fluidly with Product Managers, Data Scientists, Frontend Engineers, and other highly skilled specialists

Nice to have

Prior experience in the payments and fraud space a plus

What we offer

  • Well-funded and proven startup with large ambitions, competitive salary and the upsides of pre-IPO equity packages
  • Hopper covers the cost of employee premiums for private medical and dental coverage
  • Very generous parental leave, much above industry standards
  • Hopper also offers private life and accident coverage
  • Access to co-working space on demand through FlexDesk 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

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