Processing Payments At Scale

at August 23rd, 2016

Groupon recently announced gross billings of $1,492,882,000 for Q2 2016 — that’s about $17M our systems charged every single day this quarter. There is a lot of complexity associated with processing such volume, which we’re going to explore in this blog post. Setup overview Before going into details, let’s first review how our payment system… Read More


Screwdriver: Improving Platform Resiliency at Groupon

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at August 23rd, 2016

“Bob is an engineer. He gets his service tested for fault tolerance and resiliency. He feels confident. Be like Bob” How confident do you feel about your service not going down in the middle of the night or during your favorite holiday? Having allocated new resources for the estimated increase in holiday traffic, would you… Read More


Geekfest Palo Alto: WhatsApp’s Secret Sauce: Erlang from behind the Trenches by Francesco Cesarini

at May 9th, 2016

We are pleased to be hosting our 5th Geekfest talk in Palo Alto this Thursday (May 12th). This talk is open to Groupon employees as well as tech enthusiasts across the Bay Area. If interested, read details below and RSVP on our Meetup.com page. Schedule: 5:45 PM – Networking and Food 6:15 PM – Talk… Read More


Groupon’s Workflow Service, “Backbeat”, Now Open Source

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at April 14th, 2016

Groupon operates globally in 28 countries. In order to stay financially nimble at this scale, the company needs automated processes for just about everything. Groupon’s Financial Engineering Developers (FED) team developed and maintain our system for automating merchant payments. The system has paid millions of merchants billions of dollars. One of the tools that helped… Read More


Girl Scouts explore the world of STEM at Groupon’s 4th Scout Out Engineering

at February 15th, 2016

This President’s Day, we welcomed 100 3rd – 6th grade scouts to Groupon, 85 in our Chicago office and 15 in Palo Alto, with the support of almost 50 employee volunteers from the Engineering and Product teams. Throughout the day, the girls got to work with our technical employees to walk through activities on Code.org,… Read More


Geekfest Palo Alto Meetup: Machine Learning from Lukas Biewald

at January 15th, 2016

Groupon’s Palo Alto office is excited to be the newest chapter participating in Geekfest! Our first talk in this monthly series will be from Lukas Biewald of Crowdflower. Lukas will be speaking about machine learning, active learning and human in the loop computing; exploring how artificial intelligence systems interact with human intelligence systems. The event… Read More



Celebrating Women in Engineering at Grace Hopper

at October 14th, 2015

2015 marks the third year of Groupon’s attendance at the Grace Hopper Celebration of Women in Computing (GHC). Each year, we have encouraged women within our Engineering and Product teams to participate in the conference, which brings together attendees from across the globe in a forum that celebrates diversity and women’s achievements in tech. Groupon… Read More