Subhajit Paul

Senior Engineer with 15+ years of experience designing, testing, and developing software solutions. In-depth understanding of web technologies with a focus on delivering innovative business solutions. Excels in fast-paced, high-energy, deadline-driven environments with a willingness to take on additional tasks and challenges.

• Our Application has almost ~3000 react components and ~4000 service files ( excluding third party libs).
• We use webpack as our build tool.
• As part of this project we have reduced the build time from ~14 mins to ~3 mins.
• We have applied many strategies to acheive the same
• Webpack DLL Plugin - Prebuilding libs
• Replacing Webpack's Terser Plugin
• Replacing Babel Plugin
• Reducing the time of the Loaders/Plugins by using more delicate caching.

 "Siemens Web Framework (SWF)" is an AngularJS-based configuration first web development platform. It offers consumers to develop pages with no or minimal knowledge of modern ever-changing web frameworks. "SWF" offers a declarative framework that consumers use to design and develop their own business applications. It also provides a standard look and feel throughout all applications developed on top of SWF. As "AngularJS" has reached the end of its lifecycle, we need to migrate the product to a modern framework without changing any existing interface/contract or notion of the declarative framework, to provide consumers the same abstraction.

• Played a critical role by doing multiple POC's on different technologies before choosing on REACT. Actively participated in numerous technical discussions with various stake holders on choosing the correct framework.
• Actively worked with senior Architect to develop multiple presentations to showcase the timeline, cost and benefit of "Migrating to new React framework" to various stake holders.
• Designed and Delivered various re-usable components i.e. List of Values (LOV), List, List with Pagination, LOV with Pagination, Selection Model, Form Validation.
• Designed and developed various parts of Declarative Framework.
• Worked with numerous application teams to help them understand the new framework and some new concepts. Written and reviewed various wikis to help consumers.
• Reviewed Merge Request to ensure clean code practices.
• Successfully migrated the application with around ~3000 components and ~4000 service files.

• Performance is a major aspect of any web application. We experienced some performance degradation in some critical functionalities compared to Angular Version of the Web Application. This becomes a major road block to roll out the product as "Performance" is our major agenda which we showcased to various stake holder before starting the "Beyond Angular " Project.
• Lead the team assigned to work on Performance Improvement.
• Used Chrome browser Performance profilers extensively to figure out JavaScript's consuming major chunk of time. Used React Plugin to find un-necessary the Render cycles / commits and strategy to reduce them.

• "Siemens Web Framework" is a declarative framework , like HTML CSS. From the very beginning it is target for app developers or non-web developers. Though it become a declarative framework, It started suffering from lack of debugging issues. The challenge becomes more tough when our consumer community has grown and more people started asking for debugging capabilities.
• To address the issue I came up with a proposal for a Plugin development, which would provide consumers logging, debugging and code flow capabilities.
• Created various presentations to get it through "Product Manager" and "Senior Architect".
• Today "SWF Devtool" is part of our development stack and used by many consumers.

• Winner of Siemens Global Hackathon in 2019.
  Siemens organizes a hackathon each year across all the sites. This is a very prestigious award and winner team gets a chance
  to meet with Siemens CEO/CTO.
• Siemens Global Hackathon finalist in 2018, the idea eventually became productized and now part of
  mainstream product of “Siemens Web Framework”.
  Siemens organizes a hackathon in each year across all the sites. This is a very prestigious award.
• Addressed 300+ audience while giving a technical talk on ‘Latest Web Technological Trends’ in
  Siemens Annual Tech Conclave 2019. Siemens conducts an Annual Tech Conclave where various renowned authors and speakers are invited to deliver a speech on various topics across various segments.