Gregor joined Aachen's NLP institute as a student worker already as an undergraduate, and later focused on MT evaluation. He received a Master degree on a thesis about automatic MT evaluation measures. Continuing as a research assistant, he noticed that quite a lot of aspects of MT system combination -- where Evgeny did some fundamental work -- shared several aspects with MT evaluation, and so he added this to his research profile. During a research visit at the National Research Council Canada, Ottawa, he investigated novel Machine Learning approaches on MT system combination.
In 2012, Gregor followed Hassan's call and joined Evgeny at SAIC/Leidos. He helped improving the MT system, added new features, improved speed and memory footprint, and build dozens of translation models; general MT models as well as models tailored for certain domains, applications, or customers. But even having left the academic ivory tower, he continued to work as a reviewer for large MT conferences and journals such as ACL, COLING, or TALIP. At eBay, he enjoys a lot to take his hands on huge amounts of real data from real people, with all its noise, misspellings, spam, etc, and help these very same people to be able to talk to all the other people, even when they do not share a common language.