Meet the Team<\/h2>\n<\/div><\/div><\/div><\/div><\/div>![](\"https:\/\/www.math.columbia.edu\/mafn\/wp-content\/uploads\/2025\/01\/Jaehyuk-Choi-300x300.png\" "\\"Jaehyuk")
<\/span><\/div><\/div><\/div>Jaehyuk Choi<\/h2><\/div><\/div>\nProgram Director<\/p>\n
Jaehyuk Choi is the MAFN program director. He was an Associate Professor at Peking University HSBC Business School before joining Columbia in 2025. Prior to his academic career, he spent nine years as a fixed-income quant at Goldman Sachs in New York and Hong Kong. Jaehyuk is also a co-founder and academic advisor to quants.net<\/a>, a financial technology company. His research interests encompass mathematical finance, machine learning, and numerical methods. He holds a Ph.D. in Applied Mathematics from the Massachusetts Institute of Technology.<\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>![](\"https:\/\/www.math.columbia.edu\/mafn\/wp-content\/uploads\/2023\/08\/Gloria-Choi-Wong-300x300.png\" "\\"Gloria")
<\/span><\/div><\/div><\/div>Gloria Wong<\/h2><\/div><\/div>\nAssistant Director<\/p>\n
Gloria Wong is a career advisor for the MAFN program. She was a career advisor at Boston College Carroll Graduate School of Management before she joined Columbia in August 2023. Gloria holds a Masters in College Student Development and Counseling from Northeastern University where she also earned her Bachelors degree.<\/p>\n<\/div><\/div><\/div>
<\/div><\/div><\/div><\/div><\/div><\/div>![](\"https:\/\/www.math.columbia.edu\/mafn\/wp-content\/uploads\/2022\/04\/Martyna_Grazda-150x150.jpg\" "\\"Martyna_Grazda\\"")
<\/span><\/div><\/div><\/div>Martyna Grazda <\/h2><\/div><\/div>\nAssistant Director, Academic Affairs<\/p>\n
Martyna Grazda joined Columbia University in June 2021 and currently serves as Assistant Director of Academic Affairs in the MA in Mathematics of Finance (MAFN) program. In this role, she works closely with faculty, students, and campus partners on academic affairs, including student advising in collaboration with the Program Director, curriculum and course management, key processes related to admissions and student progression, and Teaching Assistant recruitment and hiring. Martyna holds a Master\u2019s degree in Negotiation and Conflict Resolution from the School of Professional Studies at Columbia University.<\/p>\n<\/div><\/div><\/div>
<\/div><\/div><\/div><\/div><\/div><\/div>![](\"https:\/\/www.math.columbia.edu\/mafn\/wp-content\/uploads\/2026\/03\/unnamed-200x300.png\" "\\"unnamed\\"")
<\/span><\/div><\/div><\/div>Liwen Chen<\/h2><\/div><\/div>\nAcademic Coordinator<\/p>\n
Liwen Chen joined Columbia University in 2026 as the Academic Coordinator for the MAFN program. She provides administrative and logistical support to students, faculty, and program leadership, overseeing day-to-day operations and serving as a first point of contact for students’ inquiries. Prior to joining Columbia, she spent six years managing administration at a career-focused education institution and two years in student educational consulting. She holds a Bachelor\u2019s degree from Adelphi University.<\/p>\n<\/div><\/div><\/div>
<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/span>\u00a0 \u00a0The MAFN Steering Commitee\u00a0 \u00a0<\/b><\/span><\/h3><\/h1><\/span><\/div><\/div><\/div>The MAFN program is overseen by a steering committee whose current members are:<\/span><\/h6>\nChiu-Chu (Melissa) Liu, Chair, Department of Mathematics<\/span><\/p>\nBodhisattva Sen, Chair, Department of Statistics<\/span><\/p>\nIoannis Karatzas, Department of Mathematics<\/span><\/p>\nPhilip Protter, Department of Statistics<\/span><\/p>\nMarcel Nutz, Department of Statistics and Department of Mathematics<\/span><\/p>\n<\/div><\/div><\/div><\/div><\/div>
<\/span><\/div><\/div><\/div>Jaehyuk Choi<\/h2><\/div><\/div>\nProgram Director<\/p>\n
Jaehyuk Choi is the MAFN program director. He was an Associate Professor at Peking University HSBC Business School before joining Columbia in 2025. Prior to his academic career, he spent nine years as a fixed-income quant at Goldman Sachs in New York and Hong Kong. Jaehyuk is also a co-founder and academic advisor to quants.net<\/a>, a financial technology company. His research interests encompass mathematical finance, machine learning, and numerical methods. He holds a Ph.D. in Applied Mathematics from the Massachusetts Institute of Technology.<\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/span><\/div><\/div><\/div>Gloria Wong<\/h2><\/div><\/div>\nAssistant Director<\/p>\n
Gloria Wong is a career advisor for the MAFN program. She was a career advisor at Boston College Carroll Graduate School of Management before she joined Columbia in August 2023. Gloria holds a Masters in College Student Development and Counseling from Northeastern University where she also earned her Bachelors degree.<\/p>\n<\/div><\/div><\/div>
<\/div><\/div><\/div><\/div><\/div><\/div><\/span><\/div><\/div><\/div>Martyna Grazda <\/h2><\/div><\/div>\nAssistant Director, Academic Affairs<\/p>\n
Martyna Grazda joined Columbia University in June 2021 and currently serves as Assistant Director of Academic Affairs in the MA in Mathematics of Finance (MAFN) program. In this role, she works closely with faculty, students, and campus partners on academic affairs, including student advising in collaboration with the Program Director, curriculum and course management, key processes related to admissions and student progression, and Teaching Assistant recruitment and hiring. Martyna holds a Master\u2019s degree in Negotiation and Conflict Resolution from the School of Professional Studies at Columbia University.<\/p>\n<\/div><\/div><\/div>
<\/div><\/div><\/div><\/div><\/div><\/div><\/span><\/div><\/div><\/div>Liwen Chen<\/h2><\/div><\/div>\nAcademic Coordinator<\/p>\n
Liwen Chen joined Columbia University in 2026 as the Academic Coordinator for the MAFN program. She provides administrative and logistical support to students, faculty, and program leadership, overseeing day-to-day operations and serving as a first point of contact for students’ inquiries. Prior to joining Columbia, she spent six years managing administration at a career-focused education institution and two years in student educational consulting. She holds a Bachelor\u2019s degree from Adelphi University.<\/p>\n<\/div><\/div><\/div>
<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/span>\u00a0 \u00a0The MAFN Steering Commitee\u00a0 \u00a0<\/b><\/span><\/h3><\/h1><\/span><\/div><\/div><\/div>The MAFN program is overseen by a steering committee whose current members are:<\/span><\/h6>\nChiu-Chu (Melissa) Liu, Chair, Department of Mathematics<\/span><\/p>\nBodhisattva Sen, Chair, Department of Statistics<\/span><\/p>\nIoannis Karatzas, Department of Mathematics<\/span><\/p>\nPhilip Protter, Department of Statistics<\/span><\/p>\nMarcel Nutz, Department of Statistics and Department of Mathematics<\/span><\/p>\n<\/div><\/div><\/div><\/div><\/div>
Program Director<\/p>\n
Jaehyuk Choi is the MAFN program director. He was an Associate Professor at Peking University HSBC Business School before joining Columbia in 2025. Prior to his academic career, he spent nine years as a fixed-income quant at Goldman Sachs in New York and Hong Kong. Jaehyuk is also a co-founder and academic advisor to quants.net<\/a>, a financial technology company. His research interests encompass mathematical finance, machine learning, and numerical methods. He holds a Ph.D. in Applied Mathematics from the Massachusetts Institute of Technology.<\/p>\n<\/div><\/div><\/div> Assistant Director<\/p>\n Gloria Wong is a career advisor for the MAFN program. She was a career advisor at Boston College Carroll Graduate School of Management before she joined Columbia in August 2023. Gloria holds a Masters in College Student Development and Counseling from Northeastern University where she also earned her Bachelors degree.<\/p>\n<\/div><\/div><\/div> Assistant Director, Academic Affairs<\/p>\n Martyna Grazda joined Columbia University in June 2021 and currently serves as Assistant Director of Academic Affairs in the MA in Mathematics of Finance (MAFN) program. In this role, she works closely with faculty, students, and campus partners on academic affairs, including student advising in collaboration with the Program Director, curriculum and course management, key processes related to admissions and student progression, and Teaching Assistant recruitment and hiring. Martyna holds a Master\u2019s degree in Negotiation and Conflict Resolution from the School of Professional Studies at Columbia University.<\/p>\n<\/div><\/div><\/div> Academic Coordinator<\/p>\n Liwen Chen joined Columbia University in 2026 as the Academic Coordinator for the MAFN program. She provides administrative and logistical support to students, faculty, and program leadership, overseeing day-to-day operations and serving as a first point of contact for students’ inquiries. Prior to joining Columbia, she spent six years managing administration at a career-focused education institution and two years in student educational consulting. She holds a Bachelor\u2019s degree from Adelphi University.<\/p>\n<\/div><\/div><\/div> Chiu-Chu (Melissa) Liu, Chair, Department of Mathematics<\/span><\/p>\n Bodhisattva Sen, Chair, Department of Statistics<\/span><\/p>\n Ioannis Karatzas, Department of Mathematics<\/span><\/p>\n Philip Protter, Department of Statistics<\/span><\/p>\n Marcel Nutz, Department of Statistics and Department of Mathematics<\/span><\/p>\n<\/div><\/div><\/div><\/div><\/div><\/span><\/div><\/div><\/div>Gloria Wong<\/h2><\/div>
<\/span><\/div><\/div><\/div>Martyna Grazda <\/h2><\/div>
<\/span><\/div><\/div><\/div>Liwen Chen<\/h2><\/div>
\u00a0 \u00a0The MAFN Steering Commitee\u00a0 \u00a0<\/b><\/span><\/h3><\/h1><\/span>
The MAFN program is overseen by a steering committee whose current members are:<\/span><\/h6>\n