Arpit Bhayani

Hey, I am Arpit

CS Engineer, Educator, and a Polymath

I am a computer science engineer passionate about teaching and have built systems, services, and platforms that scale to billions. I have gathered an industry experience of 9+ years and have worked at companies like Unacademy, Amazon, Practo, and D. E. Shaw.

I hold a Master's in CS from IIIT-Hyderabad, specializing in Information Retrieval and Web Mining. I teach a cohort-based course on System Design and have taught 600+ engineers spanning 10 countries.


Arpit Bhayani

In my last ~9 years of experience, I have worked at D. E. Shaw, Practo, Amazon, and Unacademy; and have built systems, services, and platforms that scaled to billions.

Post my masters in CSE from IIIT Hyderabad I joined D. E. Shaw for a short stint of 2 months, before moving to Practo and working there as a Platform Engineer, building and owning close to 8 different microservices. Post Practo I worked at Amazon on their primary mission-critical E-Commerce Database and built Data Pipelines that cold tiered the stale data.

After quitting Amazon in 2018, I joined Unacademy as their first Technical Architect and there I designed, built, managed, and scaled services like Search, Notification, Logging, Deployment Engine, and many more. I have now transitioned leadership role and am working as a Director of Engineering, leading the Site Reliability, Data Engineering, and Backend Platform verticals.

In January 2020, I started my newsletter where I write and share an essay about programming languages internals, deep dives on some super-clever algorithms, and few tips on building scalable distributed systems. The newsletter currently is read and loved by 14000+ readers.


Arpit's Newsletter read by 14000+ engineers

🔥 Thrice a week, in your inbox, an essay about system design, distributed systems, microservices, programming languages internals, or a deep dive on some super-clever algorithm, or just a few tips on building highly scalable distributed systems.



  • v10.6.4
  • © Arpit Bhayani, 2022