Nachiappan (Nachi) Nagappan is one of the five ACM Fellows of the 2020 cohort who are also active SIGSOFT members. To celebrate his award, we invited him to a question/answer session. Nachi earned his PhD from North Carolina State University (NCSU), USA, in 2005. Afterwards he was with Microsoft Research for more than 15 years, rising through the ranks from Software Engineer to Partner Researcher. In January 2021, he started in a new position with Facebook. Nachi's research interests are in the field of Software Engineering focusing on Software Reliability, Developer Productivity, Software Data Analytics and Empirical Software engineering. More broadly, he works on software analytics for improving software engineering practices. His work is strongly interdisciplinary and his research projects span the spectrum of software analytics ranging from developer productivity, large scale mining for GitHub, empirical software engineering analytics for the development process, intelligent software design for games, to predicting software service outages for cloud services. Nachi has been the recipient of many honors and best paper awards. For example, in 2019 and 2021, he and his co-authors won the ESEC/FSE test-of-time award, and in 2020 Nachi received the prestigious Harlan D. Mills Award.
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