Groupon’s mission is to become the daily habit in local commerce and fulfill our purpose of building strong communities through thriving small businesses by connecting people to a vibrant, global marketplace for local services, experiences and goods. In the process, we’re positively impacting the lives of millions of customers and merchants globally. Even with thousands of employees spread across multiple continents, we still maintain a culture that inspires innovation, rewards risk-taking and celebrates success. If you want to take more ownership of your career, then you're ready to be part of Groupon.

The Ad Inventory engineering team develops and manages the Groupon's advertising platform. The group is responsible for creating the platform for all display and sponsored ads on Groupon.

We are looking for talented & passionate engineers who could help understand and apply data driven insights to engineering. You should be able to innovate and automate in the rapidly growing area of big data and machine learning.

The goal will be to research & develop large scale ad serving platform with built-in algorithmic yield optimization system.

How you'll spend your day:

• You will work with machine learning scientists to build data infrastructure based on your extensive knowledge of the data and engineering best practices.

• You will gather, collect, store, perform batch and/or real-time processing on the data and serve it via an API for efficient access.

• You will use your extensive knowledge of databases and software development to develop machine learning pipelines, which includes error handling, scaling, maintaining clean data, and ensuring reliability.

• You will also be responsible for analytics and data intelligence tools which would help the team to gather and drive insights into the day to day business for display marketing.

We're excited to talk to you if you have:

• 5+ years experience in designing/implementing large scale distributed systems

• Build for performance; you’re the kind of engineer who can design services that commits to demanding TP99 SLAs at high volume request traffic

• Proficient in OO programming (Java, C#, C++, Python, Ruby, etc)

• Hands-on in finding creative solutions and working on multiple projects while shipping impactful customer-centric services and systems

• Passionate about scalability, availability, quality, and elegant code

• Machine Learning (ML) interest and/or experience is a plus

• BS or MS in Computer Science or equivalent experience & commitment to continual learning

We're a "best of both worlds" kind of company. We're big enough to have resources and scale, but small enough that a single person has a surprising amount of autonomy and can make a meaningful impact. We're curious, fun, a little intense, and kind of obsessed with helping local businesses thrive. Does that sound like a compelling place to work?