Jan 2020 – Aug 2022 · 2 yrs 7 mos

• StackBrain is a sales Intelligence product focussed on technographics and ecommerce.
• Full scale internet crawl (500m websites per month) to extract business attributes.
• Tech identification engine to auto detect techs in web source
• Interactive facet + full text search to find the right accounts.
• Extreme efficiency. Operational cost for running crawlers, extractors, data pipelines,
• storage and search services on custom bare metal servers came to $1500 per month
• Technologies: Golang, FoundationDB, Clickhouse, PostgresQL, React

Jun 2016 – Sep 2019 · 3 yrs 3 mos

• At Ola, I’ve worked in a fast paced environment, interacting with product/business/data teams to conceptualise and deliver new products/features apart from owning the tech strategy.
• Highlights of my journey are:
• Ola’s international expansion: data partitioning, time zones, GDPR, accounting, etc
• Cab tracking and discovery: designing a custom store for scale.
• Driver systems evolution: inventory mgmt, accounting, incentives, onboarding apps
• Sanitising and scaling Ola’s tech: RCA’s, uptime improvements, efficiency
• Technologies: Golang, Java, Python, Kafka, MySQL, MongoDB, ScyllaDB, Elasticsearch

Aug 2014 – Jun 2016 · 1 yr 10 mos · Bangalore

• I joined Flipkart around the time when India's ecommerce was exploding. My contribution to Flipkart were:
• Design and architecture of Flipkart’s pricing service and data pipelines. Scaled serving layer to 550k qps.
• Developing a competitive intelligence framework
• Flipkart Data Centre migration and Big Billion days: planning, dress rehearsals, testing, disaster recovery
• Recruitment of Flipkart's top level engineers
• Technologies: Golang, Java, Python, Kafka, RabbitMq, MySQL, Aerospike, Scrapy

Mar 2013 – May 2014 · 1 yr 2 mos

• Pugmarks was a contextual content discovery product, based on browsing history and your mobile app usage.
• I was involved with product definition, analytics and development.

Sep 2009 – Oct 2012 · 3 yrs 1 mo

• Curata is a content curation platform to build vertical specific Google News sites. I scaled and optimised the Information Retrieval backend: duplicate detection, title corrections, relevance ranking, entity extraction and crawlers.

Jan 2008 – Jan 2009 · 1 yr

• Designed, developed and marketed SnappyFingers, a Q&A search engine, which would display frequently asked questions around any keyword from across the Internet.

Jan 2006 – Jan 2007 · 1 yr

• Built TaxSpanner, India’s biggest income tax preparation and filing portal
• Product definition, design and development
• Recruited engg teams
• Marketing, Sales, Customer development and support (a bit of everything)
• Technologies: Python, Django, PostgreSQL, XML/XSLT

Jan 2004 – Jan 2006 · 2 yrs

• Scaled up engg team for core dev and professional services
• Presales, customer support

Jan 2003 – Jan 2004 · 1 yr

• Protocol development consultancy
• Co-authored IETF IPv6 RFCs

Jan 1998 – Jan 2003 · 5 yrs

• Developed DFT/HA (Distributed Fault Tolerance and High Availability) architecture
• to scale protocol stacks and applications across CPU clusters
• Developed SS7, Sigtran protocol stacks
• Participated in IETF Sigtran and IETF IPv6 working groups
• Technical proposals to bid for Telecom projects
• Pre-sales, customer training

Jun 1996 – Jun 1998 · 2 yrs

• Maintenance of BIND, SMTP forks on the Tandem platform
• Linux kernel development