Prajit Kumar Das

Prajit Kumar Das

Engineering Manager @ Cisco Systems Inc.

About Me

I am an Engineering Manager in Cisco's Security Business Group (SBG), where I lead a talented team working on Secure Firewall Management Center. We build core platform components including Authentication, Authorization, and Auditing (AAA), network and system configuration management, REST API frameworks, and cloud service integrations. I’m deeply involved in driving security-focused development and have led several key initiatives around SAML SSO, external authentication, product security baselines, and software compliance standardization.


With over of combined experience across industry and academia, I bring a unique perspective to software development—grounded in deep technical knowledge and shaped by a passion for security and scalable systems. My industry roles have included developing solutions for Single Sign-On (SSO), Multi-Factor Authentication (MFA), CVE mitigation, and deploying firewall technologies using modern infrastructure like Docker and Kubernetes. I have been fortunate to contribute at the intersection of research and real-world engineering, which has made me especially attuned to building secure, reliable, and user-centric systems.


My academic foundation includes a Ph.D. in Computer Science from the University of Maryland, Baltimore County, where I focused on context-dependent privacy and security management for mobile devices. During this time, I interned with Apple, Samsung, and Symantec, gaining hands-on experience with privacy technologies and mobile platform security.


Earlier in my career, I worked at Tata Consultancy Services as a software engineer, designing APIs to manage complex backend data systems. I hold a Bachelor of Engineering in Information Technology from Jadavpur University, graduating with honors.


Today, I am interested in leadership roles—such as Senior Engineering Manager or Director of Engineering—where I can drive delivery across multiple teams, influence architectural direction, and mentor the next generation of engineering talent. While cybersecurity is my core domain, I am always open to exploring new problem spaces where I can bring value through thoughtful leadership, technical vision, and a commitment to building excellent software.


Projects

MITHRIL project name

MITHRIL - PhD dissertation project

We present Mithril, a framework for capturing user access control policies that are fine-grained, context-sensitive and are represented using Semantic Web technologies and thereby manages access control decisions for user data on mobile devices. Read the paper from IEEE CIC 2016 here
Check out presentation to find out more
Slides also available on SlideShare
See demo video here

Heimdall project name

Heimdall - System call analysis project

The Heimdall project focused on the analysis of system calls with a goal of classifying apps into their perceived behavior category. Thereby enabling detection of outlier apps that try to do more than described in Google Play Store or what was informed to the user. Read the paper hereCheck out presentation to find out more Slides also available on SlideShare

CARLTON project name

CARLTON - Google Physical Web project

CARLTON is a Google Physical Web based context aware privacy managed question answering system. With the advent of the Internet of Things we face certain significant privacy and security concerns. CARLTON is a framework for managing data privacy for entities in a Physical Web deployment using Semantic Web technologies. It uses context-sensitive privacy policies to protect data privacy. Check out presentation to find out more Slides also available on SlideShare App source

baebots project name

BaeBots - Coding-free platform to build smart, cuddly chatbots

BaeBots is a platform to build chatbot interfaces to Institution specific information about people, places and events. Simply put, users of the chatbot can ask questions like "Who is Dr. Suess?", "Where is Dr. Suess's office?", "When is University Health Services open?" and get answers! Oh and it requires no coding! Check out video to find out more App source

mobipedia project name

Mobipedia.link! - A Mobile Applications Knowledge Base

We present Mobipedia, a Linked data cloud with knowledge on mobile devices. The knowledge base contains information such as application data, and developer meta-data, permissions used (in android), similar apps etc. Our data cloud makes it easier to build tools, perform studies and run analyses. By using semantic techniques knowledge in the endpoint is linked with other Linked Data sources such as DBpedia. Find out more

safepod project name

Safepod - Safer together

"Formally", SafePod is a mobile app that lets your selected friends know if you haven't reached a specified place at a specified time. SafePod also provides a forum for victims to share traumatic experiences anonymously. Remember that person who assumes the role of the caretaker when you go out partying? SafePod will bring that experience to your mobile phone! The goal of SafePod is to create an open community of developers to build technology that makes the world a safer place. App source

FaceBlock project name

Face-Block.me! - Privacy-Aware Pictures for everyone

FaceBlock is a proof of concept implementation of a system that can create Privacy-Aware Pictures using smart devices. The pervasiveness of Privacy-Aware Pictures could be a right step towards balancing privacy needs and comfort afforded by technology. Thus, we can get the best out of Wearable technology without being oblivious about the privacy of those around you. Read the blog to find out more Watch the demo video

Publications

Work Experience

Engineering Manager - Cisco Systems Inc.(October 2021 - Present)

Managing a team of developers working on software for Cisco's Secure Firewall Management Center product. Led the design, development, automated testing, continuous integration of on-prem software and massively scalable containerized security solutions for Cisco's product portfolio. Collaborating and coordinating work across multiple product areas and cross-functional teams to build the next generation of firewalls. Following agile software development practices delivering features for Identity & Access Management, Network Configuration Management, REST API Framework, and Cloud Services Integration. Ensuring compliance standards are met for third-party software security reviews. Collaborating across teams to handle internationalization to increase Cisco products' market outreach.

Technical Product Manager - Cisco Systems Inc.(Jan 2019 - September 2021)

Led the development of the key feature of Single Sign-on using SAML2. Helped bring in $11 million in revenue by delivering high-priority customer requests quickly.

Software Engineer - Cisco Systems Inc.(September 2017 - December 2018)

Worked on design, development and testing of software solutions for Cisco's Secure Firewall Management Center.

Graduate Research Assistant - Ebiquity Research Group (August 2012 - September 2017)

Doctoral research work with the goal of achieving context-driven access control on mobile platforms.

Research Intern - Samsung Research America (June 2014 - August 2014)

Created privacy control systems on the Android platform for protecting user personal or sensitive data.

PhD Intern - Apple Inc. (June 2013 - August 2013)

Data analytics project with a goal of identifying areas of accuracy improvement for Siri.

Intern - Symantec Corporation (June 2012 - August 2012)

Development of server side scripts for reporting automated test results of nightly builds of Symantec products.

Intern - Symantec Corporation (May 2011 - August 2011)

Development of server side scripts for reporting automated test results of nightly builds of Symantec products.

Graduate Teaching Assistant - University of Maryland, Baltimore County (August 2010 - June 2012)

Assisting students with their coursework and grading projects, homework, quizzes and exams

Software Engineer - Tata Consultancy Services (September 2007 - April 2010)

Worked as designer, developer, offshore team lead and billing estimation expert for telecom project.

In the News...

Prof. Anupam Joshi quoted in Nature news article on wearable technology

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Was a finalist for the 3 Minute Thesis competition in the 38th UMBC Graduate Research Conference, 2016. Check out my talk in the video below: