Kristoffer H. Rose

April 5, 1965September 17, 2016

Kristoffer Hogsbro, a resident of Scarsdale, was born in Esbjerg in Denmark on April 5, 1965, before being adopted by Mr. and Mrs Holm out of Klampenborg, Denmark. From an early age, Kristoffer loved the sciences, loved building Legos with his dad, and had a very happy childhood with his sister Emily in a close knit family with countless cousins. At the age of 12, he discovered computer science for the first time, as part of an afterschool program. It was love at first sight, and from that moment on, his career as a computer scientist was sealed. At age 17 he began studying computer science and physics at the University of Copenhagen. He also dedicated substantial time to student politics, where he served as the head of the student organization through several elections. When he graduated with his master thesis, he earned the silver medal, given by the University; something which prompted him to be personally thanked by the Queen of Denmark.It was during his time as a student, that he met his future wife, Eva Rose, a computer scientist herself. They married in September 7, 1991 i the Garnisions Church in the center of Copenhagen. On January 22, 1999, they had their only and very beloved son, Sofus A.H. Rose. Kristoffer had another passion: singing. For many years, he sang with the Bonevox student choir, as well as with a barbershop group, Barbervox, who earned the title for best barbershop of Denmark. Many co-singers have remained close friends throughout his life. After graduating with a Ph.D. from the University of Copenhagen, Kristoffer and his wife ventured to France, where Kristoffer took an academic teaching position at Ecole Normale Superieur de Lyon. At the same time, Kristoffer made important contributions to the open source, Debian community. While in France, an offer to join the T.J Watson research group at a IBM in New York was made, and the couple moved over the Atlantics to pursue new opportunities with their young son. Kristoffer made a series of important contributions to the rewrite community, and developed a very important commercially viable product in compiler constructions, which up until recently has been professionally deployed. In 2014, Kristoffer moved to Two Sigma Investments as a research scientist in the financial industry. He also started teaching compiler construction at New York University with his wife Eva Rose, as adjunct professors. In his spare time, he played tennis at Fox Meadow tennis club in Scarsdale, where he had many good and devoted friends. Last year, Kristoffer was unfortunately diagnosed with myelo fibrosis, which unfortunately was very aggressive in him, and ultimately cost him his life. He died after prolonged illness on September 17, 2016. Kristoffer is and will be missed incredibly. He died far too young. We encourage donations by check to the "Leukemia Fighters/ New York-Presbyterian Hospital", c/o Dr. Gail. J. Roboz, 520 East 70th street, box 403, New York, NY. 10021 in Kristoffer's name, to help fund research into this terrible illness. A Memorial Service will be held on September 30, 2016 at 11 am, at the Danish Seamens Church in Brooklyn, 102 Willow Street, New York, followed by a reception at the Church. Kristoffer is survived by his wife Eva, and their son Sofus. We will miss you terribly Kristoffer.

Arrangements under the direction of Edwin L. Bennett Funeral Homes, Scarsdale, NY.


  • Memorial Service Friday, September 30, 2016

Kristoffer H. Rose

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Michael Overton

October 5, 2016

Together with Eva, Kristoffer was a much appreciated instructor of the compilers course in our CS department at NYU. Although I did not know him well, I feel his loss greatly based on our brief interactions and the affection and respect he inspired in our students and faculty. He will be greatly missed.

Alonza Mumford

September 29, 2016

I was a summer intern with IBM Watson in 2012. Kris served as my advisor and mentor. Kris was generous with his time and patience. I was able to personally witness his wonderful commitment to help educate young people in mathematics and computer science; especially those from communities less represented in computer science. Personally, Kris has been pivotal in my career, and he is responsible for me working today as a computer science researcher. I will never forget his significant contribution to my life.

Martin Quinson

September 28, 2016

I was a student of ENS-Lyon over 15 years ago, but never met Kristoffer there because I arrived one or two years too late for that.

I know Kristoffer as an author for a piece of software called FlexML, easing the creation of XML parsers for C programs. I definitly started using it because it was readily available in the Debian archive, and because of its lovely simplicity. At some point, I became the maintainer of that software, also in charge of its maintainance
upstream (and I still do).

When I think about it, I am not sure I even exchanged an email with Kristoffer, but I surely learned a lot by reading his code and taking over his software. Added to the stories that the student of the previous years at ENS Lyon told us, this gives me the feeling that I kinda knew him.

I regret this loss, and offer my condolences to his family. I will prepare a special release of FlexML, and continue maintaining it.

Morten Welinder

September 28, 2016

Dear Eva,

I am sorry for your loss. Kristoffer was always fun to be around at Diku and always full of insight. He will be dearly missed.

Jean-Pierre Jouannaud

September 28, 2016

Kris will stay in our memories for his incredible kindness.

Debian Project

September 27, 2016

Dear family of Kristoffer,
Many of us got the chance to meet and work with Kristoffer in the Debian Project. We have released a small obituary

Herman Geuvers

September 27, 2016

Dear Eva, accept my sincere condolences. Kris was such a nice, bright and inspiring person! I got to know him in the end of the 90s when he visited Eindhoven a couple of times. Ever since we met irregularly, which was always a great pleasure. I wish you and your son Sofus all the strength you need.

Pierre Lescanne

September 26, 2016

Dear Eva,

I ought Kris so much, that I cannot imagine he passed away. Accept my sincere condolences,

Thorsten Altenkirch

September 26, 2016

Dear Eva,
very sad to hear the news. I knew that Kris was ill but I hoped he would make it. I found out because we were both in the FSCD steering committee.

Neil Jones

September 26, 2016

Dear Eva,
My deepest condolences for the loss of Kristoffer. I recall the glorious times at DIKU with Kristoffer and you during your postgraduate studies. He was a clever, creative, insightful and energetic Ph.D student. I was very happy (and not surprised to see) that Kristoffer continued strongly, obtaining international recognition for outstanding work in both theory and applications.
All the best, Neil