[Hiring] Sr Machine Learning Engineer - Fintech Foundation @Hopper

Hopper; United States; Remote; USD 120,000 - 180,000; Full time

Job summary

Hopper is seeking a remote Sr Machine Learning Engineer to join the Fintech Foundation team. This role involves implementing automated ML pipelines, developing pricing solutions, and collaborating with data scientists to optimize product delivery. Join Hopper's mission to redefine travel with innovative fintech solutions.

Benefits

Unlimited PTO

Carrot Cash travel stipend

100% employer paid Medical, Dental and Vision coverage

Access to Disability & Life insurance

Health Reimbursement Account (HRA)

Competitive salary with pre-IPO equity packages

Qualifications

• Strong development skills in Python, Scala, SQL.
• Deep understanding of ML algorithms and frameworks.
• Strong analytical and problem solving skills.

Responsibilities

• Implement automated ML training pipelines.
• Build data ETL pipelines with feature engineering.
• Develop and deploy ML real-time pricing solutions.

Skills

Python

Scala

SQL

ML algorithms

Data modeling

Problem solving

Communication

Tools

TensorFlow

pandas

sklearn

flyte

Job description

May 31, 2025 - Hopper is hiring a remote Sr Machine Learning Engineer - Fintech Foundation. Location: USA.

About the job

Hopper is continually redefining how people travel, combining a best-in-class travel agency with a portfolio of proprietary fintech offerings that give our customers peace of mind when booking travel. More than 100M monthly active users are exposed to our products through our mobile app and a growing list of partners such as CapitalOne, Air Canada, and Spirit Airlines. With a real-time feed of 50B+ priced itineraries daily along with more than ten years of history and multiple external data sources, we have unparalleled insight about pricing and demand trends.

This is a unique opportunity to join our growing Fintech Foundation team. We’re responsible for optimizing pricing for all ancillary products we sell, balancing customer demand with the financial risks we take on. We help our product teams deliver new fintech products to market faster, respond rapidly to changing market conditions, run continuous champion-challenger testing on product construction levers, and maintain our growing portfolio of pricing models across dozens of partners.

As a ML engineer you will play a key role in growing our fintech business through delivering and operating innovative pricing solutions at scale across dozens of partners.

What would your day-to-day look like:

• Implementing automated, reusable ML training pipelines.

• Build data ETL pipelines including appropriate feature engineering

• Develop and deploy ML real-time pricing solutions to production.

• Monitor and optimize for low-latency and minimal training/serving skew.

• Collaborate with data scientists, engineers and product stakeholders to define and implement relevant solutions.

An ideal candidate has:

• Strong development skills in Python, Scala, SQL.

• Deep understanding of ML algorithms and frameworks like pandas, sklearn, flyte, TensorFlow etc

• Familiarity with data modeling, software architecture and distributed data processing tools.

• Strong analytical and problem solving skills, with attention to detail.

• Excellent communication and collaboration skills.
  
  #LI-REMOTE

  Perks and benefits of working with us:

  • Well-funded and proven startup with large ambitions, competitive salary and the upsides of pre-IPO equity packages.

  • Unlimited PTO.

  • Carrot Cash travel stipend.

  • Access to co-working space on demand through FlexDesk AND Work-from-home stipend.

  • Please ask us about our very generous parental leave, much above industry standards!.

  • Entrepreneurial culture where pushing limits and taking risks is everyday business.

  • Open communication with management and company leadership.

  • Small, dynamic teams = massive impact.

  • 100% employer paid Medical, Dental and Vision coverage for employees.

  • Access to Disability & Life insurance.

  • Health Reimbursement Account (HRA).

  • DCA/ FSA and access to 401k plan.

  #LI-REMOTE
  
  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 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. Ranked the third largest online travel agency in North America, 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.

  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 global travel agency and travel fintech provider 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:

  Hopper sells billionworth of travel and travel fintech every year. In 2023, over 1.3 billion trips were planned through the Hopper app and our HTS partnerships.

  Our fintech products – including Price Freeze, Flexibility for Any Reason and Flight Disruption Assistance – have exceptionally strong CSAT because the terms are always clear, and customers receive instant, no-questions-asked resolutions.

  Almost 30% of our app customers purchase at least one fintech product when making a booking; and consumers are 1.6x more likely to repurchase if they add fintech to their booking vs if they booked just travel.

  Given the success of its fintech products, Hopper launched a B2B initiative, HTS (Hopper Technology Solutions), which represents more than 50% of the business.

  Through HTS, any travel provider (airlines, hotels, banks, travel agencies, etc.) can integrate and seamlessly distribute Hopper’s fintech or travel inventory on their direct channels. As its first HTS partnership, the company partnered with Capital One to co-develop Capital One Travel, a new travel portal designed specifically for cardholders. Other HTS partners include Air Canada, Uber, CommBank, Nubank, Flair Airlines with many more in the pipeline.

  Featured in Apple’s Best of the App Store list of Essential Travel Apps in 2023 and recognized by the likes of Fast Company’s Most Innovative Companies, Hopper has been downloaded over 120 million times and continues to have millions of new installs each month. Hopper is now the #3 largest online travel agency in North America and 70% of our app customers are Gen-Z and millennials travelers.

  Hopper has raised over $750 million USD of private capital and is backed by some of the largest institutional investors and banks in the world. Hopper is primed to continue its acceleration as the world’s fastest-growing mobile-first travel marketplace.

  Come take off with us!