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Notes & writing

Talks, mentoring and the occasional long-form post — mostly about system design, interview prep and whatever I’m debugging that week.

Talks & mentoring

Prasun Das presenting the Factory Method design pattern to a packed computer lab at The Neotia University

The Neotia University

Workshop instructor · 2026

Delivered two sessions of a three-day workshop — one on design patterns, one on DevOps — going deep on CI/CD pipelines and load balancing, alongside Orunayan Bhattacharya.

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Prasun Das speaking with a microphone on the DriveBlaze Tech Talk panel

DriveBlaze Tech Talk

Panel speaker · 2026

Invited for a tech talk alongside Chandan Jha (Associate VP, GeeksforGeeks) and Dipan Roy (founder, Mind Webs Venture).

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Prasun Das speaking to students at Jadavpur University

Double Slash 3.0 — IEEE, Jadavpur University

Mentor & speaker · 2025

Mentored teams and spoke on project thinking, engineering and execution at a hackathon run by IEEE Jadavpur University.

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Prasun Das speaking at a podium at UXINDIA 2024

UXINDIA 2024

Organizing member & Kolkata ambassador · 2024

Part of the organizing community for a week-long UX conference, representing the Kolkata design and engineering community.

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Prasun Das mentoring a student team at StatusCode, IIIT Kalyani

StatusCode — IIIT Kalyani

Hackathon mentor · 2024

Mentored teams on idea validation and implementation strategy at East India's largest student-run hackathon, with 3,700+ registrations — sharing the stage with Padma Shri Anil Gupta.

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Prasun Das talking through a build with a hardware team at the InnoFusion Hackathon sponsorship wall

InnoFusion Hackathon — UEM Kolkata

Judge & mentor · 2024

Judged and mentored at UEM Kolkata's first software + hardware hackathon, with 800+ registrations.

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Prasun Das presenting a technical session at IEM Newtown

IEM Newtown & UEM DriveBlaze

Technical session speaker · 2023—2024

Delivered sessions on full-stack development, system design and microservices vs. monolithic architecture for student developer communities.

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Writing

What is System Design and Why is it Important?

A grounding in system-design fundamentals — scalability, reliability and architecture patterns.

pephub.tech

The Art of Pagination: A Developer's Journey

Cursor-based, offset and keyset pagination strategies, with real trade-offs for large datasets.

pephub.tech

Complete Java Cheatsheet — Basics to Advanced

OOP, collections, concurrency and streams, as a working reference rather than a tutorial.

pephub.tech

A Complete Roadmap for On-Campus Placements

DSA, system design and HR rounds, structured for CS students navigating campus placements.

pephub.tech

Understanding JavaScript Basics

Closures, hoisting, async/await and the event loop, explained without the hand-waving.

Medium