Anantha Kumaran random thoughts
Bangalore, India.

Work Experience

ActiveSphere Technologies Private Ltd Feb 2012 - Present

Working as a consultant. Some of the client projects include

Midtrans - a leading payment gateway in Indonesia.

  • was part of the team which develops the snap product, an embeddable payment form
  • helped them migrate their notification system to Elixir stack to improve throughput and resource consumption
  • built the initial version of centralized auth server based on oauth protocol
  • built a streaming report generation system that could export hundreds of thousands of rows of data in xlsx and csv format while maintaining constant memory overhead
  • helped with establishing a pattern for kafka consumers. There are now 10s of consumers processing millions of events per day. Built a system to selectively reprocess historical events.
  • helped with decoupling services which were directly accessing each other's databases
Some of the libraries — namely redix_sentinel, barlix, xml_stream and zstream — are open-sourced.

EnerNOC - I was a core member of the team that developed Energy Manager, a web app used by professionals to visualize and understand energy usage. I have touched many parts of the system. My main contribution includes writing and improving various charts like load profile, consumption, heatmap etc using d3. I have also written an automated test system to generate charts for various combinations of state and compare their screenshots with previous versions to catch regression and a library named μ to compress url parameters.

Placeley - I was part of the two member team that developed the web app and the backend for placeley, a geo location social network for places.

Bitstat Technologies Private Ltd Jan 2011 - Jan 2012

Developed and deployed a web based business process management system. Used several technologies including nginx, unicorn, rails, solr, mysql, amazon ec2, amazon ses, qpsmtpd, redis, oauth, capistrano. Authored a WYSIWYG Form Editor similar to

Artha42 Innovations Private Ltd Jul 2010 - Dec 2010

Worked with a team that developed and deployed a personal health record management system. Used several technologies including mongodb, sinatra, nginx, thin, beanstalk.


Experienced - Ruby, JavaScript, TypeScript, Elixir, Emacs Lisp.
Knowledgeable - Clojure, C, Erlang, Shell script, Go, Java.

Selected Open Source Projects

NEato - Nintendo emulator written in go.

Fake Dynamo - Amazon Dynamodb emulator.

Tide - TypeScript Interactive Development Environment for Emacs.

Webify - webfont generator - converts ttf to woff, eot and svg.

μ - μ is a JavaScript library for encoding/decoding state in URL.

Memcachex - Memcached client for Elixir.

Randex - regex based random string generator.

FDB - FoundationDB client for Elixir.


B.E Computer Science (2006-2010).
Karunya University - Coimbatore.
CGPA (8.1/10).


code -
reading list -
visualizations -