1. Co-Convener of the Symposium ”Recent Developments in Mathematical Sciences and Their Applications (RDMSTA)” held on 23.12.2011 as a part of CONIAPS-XIV. 

2. Organizer of the Symposium ”Life and Works of Ramanujan” held on 28.06.2012 as a part of ICSFA 2012. 

3. Organizer of the Panel Discussion on ”Developments of Mathematics in India during last 125 years” as a part of ICSFA 2012. 

4. National Advisory Committee of UGC sponsored National Seminar on Recent Trends in Biomathematical Modeling under uncertain Environment at Mugberia Gangadhar Mahavidyalaya, West Bengal, held in September, 2015. 

5. Organizer of the Seminar "Research Opportunities at IIT Mandi",  Speaker: Prof. Laxmidhar Behera, Director, IIT Mandi held on 30.01.2023 at 04:00 pm.

6.-75. Faculty Coordinator of the Weekly seminar IntERAct (Internship Experience and Research Activities), so far 70 seminars have been conducted.

1. Attended a seminar entitled ”Role of Mathematics as a Service Subject” sponsored by Centre for Mathematics Education, Visva-Bharati held at Department of Mathematics, Visva-Bharati, West Bengal on Feb2004. 

2. Attended a seminar entitled ”Recent Advances in Applied Mathematics” sponsored by UGC, held at Department of Applied Mathematics, Vidyasagar University, West Bengal during March 18-19, 2004. 

3. Participated and Presented a Paper in a National Seminar on Applied and Computational Mathematics and their Applications (Sponsored by UGC) held at Vidyasagar University, Midnapore during March 6-7, 2008. 

4. Participated in National Symposium in Mathematics for Young Researchers sponsored by DST and NBHM at IIT Gandhinagar during February 26-28, 2010. 

5. Participated and Presented a Poster in the National Seminar ”NSAM 2013”, organized by Calcutta Mathematical Society during September 6-8, 2013 at Kolkata. 

6. Regularly attended all the Weekly Number Theory Seminar at UIUC, USA. 

7. Regularly attended all the Graduate Students Number Theory Seminar (GSNTS) at UIUC, USA. 

8. Participated and delivered an invited lecture in the UGC sponsored National Seminar on ”Recent Trends in Biomathematical Modeling under uncertain Environment” at Mugberia Gangadhar Mahavidyalaya, West Bengal. 

9. Participated and delivered an expert lecture at one day state level seminar on ”Optimization Techniques for Engineers and Researchers” at Vadodara Institute of Engineering on 11.12.2015. 

10. Participated and delivered invited talk (s) at National Seminar on ”Parallel Computing & Optimization Techniques” during February 23-24, 2019, organized by Govt. M. H. College of Home Science & Science for Women, Jabalpur. 

11. Participated and delivered an invited talk on "Multi-Objective Optimization Problem: Basics and Applications" at Special  Seminar  at Midnapore College, Midnapore on August 07, 2024. 

12-81. Participated and conducted the Weekly seminar IntERAct (Internship Experience and Research Activities) as Faculty Coordinator, 70 seminars held so far.