Jan 2020 – Dec 2020 · 11 mos

• Responsibilities:
• Part of Architecture Guild defining architectural principles, patterns & technology radar.
• Lead and contribute to the working chartered to solve complex engineering problems with organizational impact.
• Define System Architecture and High level design of complex modules. Low level design and code reviews.
• Bootstrap System development with Architectural structure, framework integration and CI/CD
• Mentor engineers in development tasks. Guide PM/EM in scoping and estimation.
• Accomplishments:
• Chair for the Job Scheduling Working group (aka WG)
• Analyze and scope the job processing capabilities. Design and implementation of Job scheduling operator in Kubernetes.
• Lead Contributor for Event driven architecture WG:
• Drive adoption of Kafka as the event hub, define standards and guidelines. Onboard developer teams.
• Define Event Platform capabilities including Data lake, notifications, subscriptions and processing.
• Contributed to Cross domain search WG:
• Design for bootstrapping data from multiple sources.
• Contributed to fine grained authorization WG
• Evaluate and PoC of fine grained authorization capability using OPA.

Mar 2017 – Jan 2020 · 2 yrs 10 mos

• Usage Data Processing Pipeline:
• Architecture, design and implementation of core components of a unified usage data processing pipeline to ingest log files and streaming records, price it and integrate with billing.
• ETL Pipeline handles parsing, validations, de-dup, filtering, transformations, enrichment
• in a configurable and extensible manner using Plugins.
• Designed to elastically scale to hundreds of millions of records a day.
• Staged event driven microservices pattern applied using Kafka.
• Data Integration Middleware and Connectors Framework:
• System architecture and high level design of Integration middleware to ingest data from third party systems using pluggable Source connectors, Process data ( parse, validate, enrich /transform) and send to downstream systems via pluggable Sink components. Supports HTTP/AMQP/Kafka protocol.
• Coded core components of Microkernel and plugin framework design.
• Design of document text extraction to feed search index and classify documents.
• Team rapidly build 20+ plugins 6 months using the plugin framework
• Scalable to 100 millions events per day enabled by Microservice per connector deployment on Kubernetes, Kafka data partitioning and reactive microservices
• Job Scheduling Kubernetes Operator:
• Design of Kubernetes Operator for ScheduledJob capability which is an extended version of K8s CronJob supporting multiple parameterized, time zone aware schedules with rich metrics.
• Coded the core Reconciler module.
• Invoice Templating and PDF Generation:
• Architecture, design and implementation of core components of Invoice template specification and PDF generation to support different invoice layout formats with just configuration.
• Guided the definition of the domain specific template language for pdf design.
• Guided the design of the WYSIWYG editor for template editing in ReactJs.
• Scale to 1 million invoice PDF generation per day. Horizontally scalable with load.

Feb 2015 – Nov 2015 · 9 mos

• Definition, and Design of Tech Excellence and Hygiene Program for TuboTax.
• Technology validation of Service Oriented Universal Tax application on Windows 10
• Exploration of technology strategy for migration to new tax runtime architecture

Aug 2010 – Feb 2015 · 4 yrs 6 mos

• Overall Tech Lead of the product responsible for technical delivery,design and mentoring.
• Lead developer for the Declarative UX framework on Windows platform. Work included:-
• Hosting of Node.JS services and JS library in .NET process using V8 containers.
• Service Bus for cross language (C++,C#,Javascript) integration via messaging
• Rendering engine based on declarative customisable templates.
• Fault tolerant design solving for reliability, active monitoring and fail over.
• Worked on following modules/features:-
• High level design of migration to new Tax file container with Cloud backup capability
• High level design of A/B Testing/Experimentation capability.
• Re-design of app two phase shutdown.This resulted in ~50% YOY Crash reduction.
• Development of service registry for easy management and invocations of services.
• Introduced Splunk for indexing and queuing of crash log data for faster diagnosis and reporting.
• MyTaxRefund: Windows Store App for Tax Refund Status

Nov 2008 – Aug 2010 · 1 yr 9 mos

• Lead Engineer responsible for development of generic graph framework based on .NET WPF.
• Designed an Architecture comprising Data Layer, Generic NodeLink layer and Presentation layer.
• Implemented Process Flow Diagram graph component.
• API design for easy integration into Data Flux Integration Studio
• Extensively leveraged M-V-VM design pattern for testability and UI customisation.

Jan 2007 – Nov 2008 · 1 yr 10 mos

• Bridgestone Enterprise Apps:
• Project leadership for Windows mobile apps enabling field data capture and fleet management.
• Technical review and mentoring
• Microsoft Competency Center
• Founding/Lead engineer for focus group on Business Solutions.
• Responsible for developing PoC using MS CRM, Great Plains
• PoC for rewards points management for MS Commerce Server

Sep 2003 – Dec 2006 · 3 yrs 3 mos

• Agilent Enterprise content management (ECM)
• Evaluation of Sharepoint server for high scalability and big data loads.
• Design of Metadata Management module(Extraction, Storage and Security permission)
• Design and Implementation of Advanced Search for Metadata.
• Agilent Certify Network Data System:
• Development of Groups and Project Configuration in Lab Management Console.
• Re-Design of Event Distributor Service for better Performance and Reliability.
• Re-Design of Process Monitor component for Load Balancing.
• Development of XML import/export functionality for Logbook (Audit Trail) component.
• Engineering maintenance of host of components in the Application Services Layer.

Jan 2000 – Jan 2003 · 3 yrs · Pune Area, India

• Development of IBM Distributed File System Client for Windows
• Part of a small team which did the GA release of the new DFS Client on Windows.
• Fixed 60+ defects in the IBM DFS Client involving major Data Integrity and Crashes.
• Fixed bugs in the kernel mode File System Driver and multithreaded Cache Manager.
• Performed User mode and Kernel Mode crash dump analysis using Softice and WinDebug
• Re-Designed startup model for the DFS Client on OS Startup to avoid race conditions.
• Performance profiling and automated load testing of the file system.