Jan 2019 – Jan 2020 · 1 yr · Bengaluru Area, India

• Catalog Data Science Team
• Designed and Implemented KafkaClient: Kafka Library from scratch to provide guaranteed at-least-once-processing semantics with simplified API instead of default at-least-once-delivery semantics provided by Kafka Libraries so that application won’t miss processing the message even in case of distributed failure.
• Designed and Implemented Kubernetes based Ultron: Inferencing Platform from scratch to onboard ML model written using any ML framework and serve the predictions using it in realtime at scale with predictable latency, accessible via HTTP Endpoint/Java Client.
• Designed and Implemented GRPC based Model Proxy from scratch supporting Realtime Request Microbatching to multiplex and de- multiplex realtime (< 50ms) requests on the fly providing optimized Model prediction at high throughput [O(1000 RPS) for Deep Learning models with 16 K8s pods].
• Designed and Implemented Framework from scratch to let the ML Engineers define their models and package them in standard format to make it servable on the Inferencing Platform.
• Designed and Implemented Java Client from scratch providing realtime access to all the models deployed on the platform accessible via single TCP connection in a uniform way with synchronous/asynchronous API.
• Published (internally) design for "AutoML Platform - Zero Knowledge Machine Learning Platform".
• Published (internally) architecture for "Massively Parallel Fault-Tolerant Model Training".
• Published (internally) architecture for “Inferencing Platform” providing Realtime/Batch/Streaming ML model serving.

Jul 2018 – Jan 2019 · 6 mos · Bengaluru Area, India

• Terracotta - Distributed In-Memory Store for extremely low predictable latency with Open-Source/Enterprise Offerings
• Designed and Implemented PerfRunner: Framework from scratch to unify all the product benchmarks with a single structure, enabling repeatable simulation of various workload patterns providing clues for corresponding performance optimizations.

Sep 2016 – Jun 2018 · 1 yr 9 mos · Bengaluru Area, India

• Terracotta - Distributed In-Memory Store for extremely low predictable latency with Open-Source/Enterprise Offerings
• Designed and Implemented Retrier: Open-Source library from scratch to simplify retries to make the system resilient to failure.
• Designed and Implemented cluster-tool from scratch to create/manage Terracotta cluster, providing framework to add new commands to the tool which get accessible to the user in a uniform manner.
• Implemented 2-Phase backup protocol to get consistent snapshot of live Terracotta cluster with < 10ms cluster pause.
• Implemented IP Whitelisting feature to secure products running on Terracotta Platform.
• Designed and Implemented License infrastructure to enforce products features/limits running on Terracotta Platform.
• Designed and Implemented Ehcache crash proof store backed by RocksDB, reaching 20K PUT/200K GET ops/sec with low tail latency.
• Designed and Implemented Cloud-Agnostic (AWS/Azure/On-Prem) deployment script for Terracotta DB.
• Gave Talks on "Building Resilient Microservices" and "Kubernetes: Going Cloud Agnostic."

Jan 2016 – Sep 2016 · 8 mos

• Partner Portal – Cloud Product to enable Symantec’s Partners to manage their customer’s Symantec cloud products
• Published (internally) architectural/design document for Phase-1 of the product.
• Designed and Implemented provisioning microservice from scratch to get on-boarded on the common cloud infrastructure.
• Common Cloud Platform - Distributed micro-services based scalable cloud platform to host Symantec products
• Designed and Implemented Health Check Framework from scratch for Java based micro-services.
• Designed and Implemented Java Library from scratch providing nested synchronous, asynchronous and concurrent retries.
• Designed and Implemented Framework from scratch to create composable tool-chain for new product with minimal effort.
• Designed and Implemented request tracing from scratch across micro-services using native web container execution
• capabilities to propagate session IDs, helping debug the failures in distributed microservice environment.
• Published whitepaper (internally) on “Dynamic Composite field uniqueness within document databases”.

Jun 2014 – Dec 2015 · 1 yr 6 mos

• Mobility Manager – Cloud Product with MDM and MAM capabilities enabling BYOD
• Designed and Implemented Apple Device Enrollment Program and Kiosk Mode Feature.
• Improved the Device Restriction Report performance from 30 mins to 30 secs.
• Designed and Implemented HTTP Long poll server from scratch handing 60K+ connections on a single box with < 1GB memory footprint.
• Designed and Implemented TLS Interception Proxy from scratch for 2-way TLS secure connections, providing transparent traffic routing based on the payload.

Jun 2013 – May 2014 · 11 mos · Mumbai Area, India

• Worked at Morgan Stanley in Wealth Management Division.
• Designed and Implemented framework for generating PDF reports from the SQL database via HTTP endpoint.
• Implemented Secured (with Authentication/Authorization) REST APIs for multiple internal products.
• Gave Talk on "Solving Big Data Problems using Hadoop".

Sep 2010 – Jun 2013 · 2 yrs 9 mos · Mumbai Area, India

• Designed and Implemented infrastructure from scratch for real-time synchronization between Cloud and Mobile app.
• Optimized network and battery consumption by densely packing push payload.
• Implemented memcached caching to achieve sub-second response time for REST APIs.
• Published (internally) design document on real-time synchronization between Cloud and Mobile app.