Senior Backend Software Engineer, Payments & Fraud

About the Role: Senior Backend Software Engineer, Payments & Fraud

Hopper Technology Solutions (HTS) Checkout is at the forefront of combining market-leading payment services with best-in-class fraud detection. This role significantly enhances the travel experience for users and drives revenue for partners. Our hosted checkout solution provides global coverage, multi-currency support, a comprehensive suite of payment methods, and industry-leading anti-fraud technology.

We are actively seeking a Senior Backend Software Engineer with a proven track record in building scalable and robust systems. As a key member of a cross-functional team of exceptional engineers and product managers, you will be instrumental in developing innovative features and providing top-tier support to help our partners expand their businesses.

Our Tech Stack

• Our core backend systems are primarily developed in Scala.
• We leverage a comprehensive suite of Google Cloud Platform (GCP) services, with extensive utilization of GKE (Google Kubernetes Engine), Pub/Sub, BigQuery, and Spanner.
• Our architecture features containerized microservices, with over 200+ services running predominantly within Google Cloud Kubernetes.
• We are a highly data-driven organization, making significant use of tools such as Amplitude, BigQuery, and Datadog for insights and monitoring.

Your Day-to-Day Responsibilities

• Design, build, and meticulously review code for our fraud and abuse backend platform.
• Iterate on new features using Scala (no prior experience required, training provided) and various GCP technologies.
• Experience rapid deployment, often shipping your first code within days, and embrace an agile approach to feature iteration.
• Operate with a high degree of autonomy while collaborating closely with engineers and Product Managers to ensure strong alignment.
• Engage in cross-functional collaboration with the product team and other Hopper teams.
• Thrive in an environment with minimal meetings, emphasizing strong alignment and asynchronous decision-making processes.

An Ideal Candidate Possesses

• 4+ years of hands-on experience in building scalable backend systems.
• A strong foundational understanding of distributed systems and how architectural decisions directly influence performance and maintainability.
• The ability to work effectively with minimal guidance, demonstrate proactivity, and capably navigate uncertainty, ambiguity, and rapidly evolving goals.
• A history of excelling within cross-functional teams, collaborating fluidly with Product Managers, Data Scientists, Frontend Engineers, and other highly skilled specialists.
• Prior experience in the payments and fraud domain is considered a significant advantage.

Perks and Benefits of Working With Us

• Join a well-funded and proven startup with ambitious goals, offering a competitive salary and the upside potential of pre-IPO equity packages.
• Enjoy unlimited PTO (Paid Time Off).
• Receive Carrot Cash travel stipend.
• Access a Flexdesk All Access Pass and a work-from-home stipend.
• Immerse yourself in an entrepreneurial culture where pushing limits and calculated risk-taking are part of everyday business.
• Benefit from open communication channels with management and company leadership.
• Work within small, dynamic teams, allowing for massive individual impact.

Key skills/competency

• Backend Development
• Scalable Systems
• Distributed Systems
• Microservices Architecture
• Scala
• Google Cloud Platform (GCP)
• Kubernetes (GKE)
• Payments Processing
• Fraud Detection
• System Design