I am currently a software engineer at D. E. Shaw India, where I develop financial analytics infrastructure and algorithms for derivatives pricing, credit instrument modeling, volatility, and yield computations.

I completed an Integrated Bachelor and Masters in Computer Science and Engineering at IIT Kharagpur, where I worked on problems associated with usable security and privacy, advised by Mainack Mondal

My research interests lie in usable security and privacy ^_ understanding security and privacy challenges in real-world systems and user-facing technologies. I have worked on problems spanning software security, security issue reporting, and user decision-making in digital payment systems, and I am broadly interested in human-centric security and privacy at the intersection of users, software, and security.

Education

Integrated B.Tech. + M.Tech. (Dual Degree), Computer Science and Engineering ^_ IIT Kharagpur 2020 – 2025
Higher Secondary Education ^_ Kendriya Vidyalaya IIT Kharagpur 2018 – 2020
Secondary Education ^_ Kendriya Vidyalaya IIT Kharagpur 2013 – 2018

Publications

“To Pay or Not to Pay?”: Understanding User Decision-Making and Influence of Nudges in UPI Apps

Nandini Bajaj^*, Shiladitya De^*, Kshitiz Sharma, Xinru Page, Bart Knijnenburg, Mainack Mondal
In ACM Asia Conference on Computer and Communications Security (ASIA CCS 2026).

“I wasn’t sure if this is indeed a security risk”: Data-driven Understanding of Security Issue Reporting in GitHub Repositories of Open Source npm Packages

Rajdeep Ghosh, Shiladitya De, Mainack Mondal
In 34th USENIX Security Symposium (USENIX Security 2025).

Authors marked with ^* contributed equally.

Experience

Below is a summary of my professional, teaching, and academic service experience.

Work Experience

D. E. Shaw India Private Limited | Member Technical Jun. 2025 – Present Working on financial analytics infrastructure and algorithms for derivatives pricing, credit spreads, realized volatility, and bond yield computation.

Internships

D. E. Shaw India Private Limited | Summer Intern, Revamping the Taylor Series Infrastructure May 2024 – Jul. 2024 Redesigned the Taylor Series framework for real-time analytics, improving performance and scalability for derivatives pricing and risk management.

Teaching

Co-designed and served as Teaching Assistant, Design Optimization of Computing Systems ^_ CSE, IIT Kharagpur Autumn 2024
Teaching Assistant, Information and System Security^_ CSE, IIT Kharagpur Spring 2025

Academic Service, Talks & Activities

Presenter, ACM Asia Conference on Computer and Communications Security (ASIA CCS) 2026
Attendee, Theory and Practice of Multi-Party Computation (TPMPC), IISc Bangalore 2025
Department Representative to the Undergraduate Council, IIT Kharagpur 2022 – 23
Member, Space Technology Student Society — conducted discussion and star-gazing sessions
Participant, culinary competitions organized by AROMA, IIT Kharagpur

Selected Projects

Alice in Trackerland: Exploring Real-World Utilities of Continuous Location Tracking Apps

Masters Thesis Project, IIT Kharagpur. Guides: Mainack Mondal & Satrajit Ghosh Aug. 2024 – Apr. 2025

PaPAd: Practical and Private Advertising

Bachelors Thesis Project, IIT Kharagpur. Guides: Mainack Mondal & Satrajit Ghosh Aug. 2023 – Apr. 2024

Scalable Distributed Database (GitHub)

Course Project, Distributed Systems. Instructor: Sandip Chakraborty Feb. 2024 – Apr. 2024

Built a scalable distributed database in Go with range-based sharding, a write-ahead log, and a Dockerized load-balanced server architecture.

Query-by-Example for Scientific Article Retrieval (GitHub)

Course Project, Information Retrieval. Instructor: Somak Aditya Feb. 2023 – Apr. 2023

Built a Query-by-Example system for faceted scientific article retrieval using an ensemble of six language models, improving NDCG by 7.97%.

Kernel Level Load Balancer using eBPF and XDP (GitHub)

Course Project, Advances in Operating Systems. Oct. 2023 – Nov. 2023

Developed a fast, lightweight load balancer at the kernel level using extended Berkeley Packet Filters (eBPF), leveraging eXpress Data Path (XDP) to intercept and redirect network packets efficiently. Implemented a queue to hold packets when all servers are busy, then redirect them to the server that becomes free.

Awards & Achievements

JEE Advanced 2020 — All India Rank 3402 amongst ~150,000 shortlisted candidates 2020
JEE Main 2020 — All India Rank 4661 amongst ~1,000,000 candidates 2020
West Bengal Joint Entrance Examination 2020 — Rank 85 amongst ~90,000 candidates 2020
Secured department change to CSE department at the end of first year for being in the top 1% students in first year 2020-21
Second position in Maths Olympiad General Championship, Technology Students Gymkhana, IIT Kharagpur Jan. 2024
Qualified for the Indian National Astronomy Olympiad (INAO) 2019
Qualified for Junior Maths Olympiad (JMO) and Regional Mathematics Olympiad (RMO) 2016, 2017

Courses Taken

Computer Security & Cryptography

Usable Security and Privacy, Information and System Security, Cryptography and Network Security, Foundations of Cryptography, Cryptographic Protocol Theory, Computational Number Theory.

Machine Learning

Machine Learning, Natural Language Processing, Linear Algebra for AI and ML, Statistical Foundations of AI and ML, Information Retrieval.

Computer Science

Switching Circuits & Logic Design^★, Compilers^★, Systems Programming Laboratory, Computer Networks^★, Operating Systems^★, Programming & Data Structures^★, Computer Organisation & Architecture^★, High Performance Computer Architecture, Software Engineering^★, Database Management Systems^★, Formal Language & Automata Theory, Algorithms I^★, Algorithms II, Discrete Structures, Advances in Operating Systems Design, Distributed Systems, Parallel Algorithms, Advanced Graph Theory.

$Mathematics category logo$

Mathematics

Advanced Calculus, Linear Algebra, Numerical & Complex Analysis, Probability & Statistics.

^★ marked courses include a laboratory component as well.