Apr 2020 – Apr 2022 · 2 yrs · Bengaluru, Karnataka, India

• On TekSystems Payroll.
• In MPS, we get usage data from 2M+ printers across the globe, this data needs to be analyzed and acted on to provide an uninterrupted customer experience. I build the system that computes usage, predicts servicing & triggers actions.
• Highlights:
• ● Reengineered & retired the legacy system, vastly improving on scalability, cost & extensibility.
• ● Improved stream processing capability from 2M req/day to 40M+ req/day with minimal cost increase.
• ● Redesigned the synchronous monolithic API to an event based distributed system.
• ● Created well crafted codebase with focus on concurrency, design patterns, SOA & TDD.
• Details:
• ● Redesigned the legacy Java based monolithic system into an asynchronous microservices architecture.
• ● Implemented the core computation engine using Java 8 & Spring Web with special focus on multithreading, distributed parallel processing alongside usage of advanced language & framework features such as lambda expressions, completable Futures, java streams, dependency injection etc.
• ● Adhered to best practices like usage of appropriate design patterns, test driven development, SOLID etc.
• ● Maximizing team productivity by creating custom ORMs, well documented SDLC guidelines, conducting code reviews etc.
• ● Implemented the data ingestion & fan out services using Node.js & Typescript in standalone Express apps as well as AWS lambda using serverless framework.
• ● Effectively handled the very large scale data stream using caching, queuing & orchestration mechanisms.
• ● Monitored, Analyzed & debugged using services like Cloudwatch, Athena, X-Ray.
• Technologies:
• Java, Spring , Node.js, Typescript, Cloudwatch, AWS, Athena, ECS, X-Ray, Secrets Manager, S3, Lambda, Elasticache, SQS, SNS, Step Functions, Redis, Git, Hasura, Graphql, REST, JUnit, Jest, JMeter, Serverless, Postgres, Docker, ALB, RDS, Splunk.

Jan 2019 – Mar 2020 · 1 yr 2 mos · Bengaluru Area, India

• We developed a suite of customer oriented SaaS products for enterprises. As tech lead of a 6 member team, I delivered 2 products, RefineX, feedback management system & RewardX, reward point management system.
• Highlights:
• ● Delivered highly available & scalable systems, used by CCD & Dominos, serving 100M+ monthly customers.
• ● Created a low cost event processing system using Bull.js & Redis, processing 1M+ events/day.
• ● Designed the RDBMS schema used in our OLTP system, providing low latency transactions at high scale.
• ● Defined the application architecture & development guidelines for APIs & Web interfaces.
• Details:
• ● Designed a hybrid application architecture consisting of AWS Lambda Functions & Standalone EC2 instances, connected using AWS SQS.
• ● Designed the common backend server using Node.js & Typescript used by all other services for maximum availability, scalability & maintainability.
• ● Redesigned the SQL schema for minimum transaction latency, maximum throughput & richer analytics.
• ● Developed a custom Node.js based internal events framework using Bull.js and Redis. While optimizing for multithreading (Clustering) & distributed processing (Load balancing).
• ● Defined SDLC guidelines for appropriate usage of TDD, Unit testing & Code Reviews.
• ● Designed the architecture & guidelines for UI development (React) of all product consoles, component libraries(Storybook) & customer interfaces for cleaner code, maximum code reusability and minimum bundle size.
• Technologies:
• Node.js, Java, React, Typescript, SQL, HTML, CSS, GraphQL, Typeorm, Jest, Bull.js, Docker, AWS (EC2, API Gateway, SQS, Lambda, RDS), Linux, Redis, Serverless, Jenkins (CI / CD).

Apr 2017 – Jan 2019 · 1 yr 9 mos · Bengaluru, Karnataka, India

• We built The Blockchain University, an online learning platform with blockchain integration. As one of the founding members & the only developer, I started with building the backend and eventually worked on the full stack.
• Highlights:
• ● Solely developed & delivered the MVP with Node.js based backend and Angular based frontend.
• ● Implemented a custom video conference and chat solution using HTML canvas, sockets & WebRTC.
• ● Built & open sourced the plugin to store & verify user data on ethereum, using cryptography & smart contracts.
• ● Gained expertise and hosted workshops & tech talks on web & blockchain development.
• Details:
• ● Developed the REST API server using Node.js and GraphDB.
• ● Developed UI using Angular, HTML, CSS, Angular Material, Bootstrap.
• ● Managed error tracking, version control and deployment.
• ● Developed SDKs for our protocol one0x, one of the world's first blockchain (Ethereum) based certificate verification service.
• ● Developed the frontend and backend for user flows like user registration, on-boarding, authentication, sms & email verification, calendar appointment scheduling, notifications, in app messaging and video conferencing, payment and payout flows, geo-tagging, file sharing, Video streaming, Q&A boards.
• ● Worked with Reliance Jio as a part of the 2018 cohort of the startup accelerator Reliance JioGenNext.
• ● Host and instructor of the most active Blockchain developer community in Bangalore, Open Distributed Labs, which grew to 500+ members, via meetups, conferences and bootcamps.
• Technologies:
• Node.js, Loopback, Angular, Angular Material, Git, Javascript, Typescript, HTML, CSS, Neo4j, Solidity, Truffle.js, Ethereum, EC2, S3, API Gateway, Twilio, CCAvenue, Stripe, WebRTC.

Jun 2016 – Apr 2017 · 10 mos · Greater Chennai Area

• Our team worked for a leading Germany based motor & fan manufacturer to build their primary website on the Adobe Experience Manager platform. As a web developer, I worked on the full stack.
• Highlights:
• ● Successfully delivered an easily manageable system as per our client requirements.
• ● Built HTML & JS based AEM templates & Java based modular OSGi services.
• Details:
• ● Developed Adobe AEM6.2 templates and reusable Touch UI Responsive Web Design Components for the business users from business design documents.
• ● Developed Custom OSGI Servlets, Custom OSGI Services, Sling Models, Components and Bundles.
• ● Involved in Designing Custom MSM (Multi-Site Manager) rollout configurations, BluePrint, LiveCopy and Responsive Web Design for Desktops, Mobile Phones in an AEM Clustered environment.
• ● Used Sightly Templating Language (HTL) and Sling Models in AEM component creation.
• Worked with Maven to build and generate the jar files to deploy in the Felix Console
• Technologies:
• Java (J2EE), HTML, CSS, Javascript, GIT, Maven, JQuery, Adobe Experience Manager 6.2, MySQL.