Sumant Kumar Email & Phone Number

Kolkata, West Bengal, India

- Worked on to design (LLD) product that lets users create a form ( for reference consider google forms but with enhanced data capability). Currently leading the team who is responsible for adding features on it.- As a part of form product, worked on features to add different types of questions.- As a part of form product features, one of the requirements was to show/hide a particular question based on the answer user has given for a specific question and along with revealing a… Show more - Worked on to design (LLD) product that lets users create a form ( for reference consider google forms but with enhanced data capability). Currently leading the team who is responsible for adding features on it.- As a part of form product, worked on features to add different types of questions.- As a part of form product features, one of the requirements was to show/hide a particular question based on the answer user has given for a specific question and along with revealing a question, we had to display its options if question type was multi choice and in some scenarios we had to set it's default value too. To make sure configuring/evaluating such things don't create circular dependency, I implemented directed acyclic graph and its topological sort functionality.- Worked on to encrypt and store files in GCP bucket. - Worked on a large scale data migration in Microsoft SQL server. Show less

Kolkata Area, India

- Revamped payment infrastructure, made it loosely coupled from external payment providers.- Reduced evaluation time by 20 % for calculating driving distance between geographical locations using optimized batch call.- Designed client side controls to configure a filter based on columns and eventually use that configuration for filtering out row values from a dataset(sql server table).- Worked on a product that lets user configure relationships between… Show more - Revamped payment infrastructure, made it loosely coupled from external payment providers.- Reduced evaluation time by 20 % for calculating driving distance between geographical locations using optimized batch call.- Designed client side controls to configure a filter based on columns and eventually use that configuration for filtering out row values from a dataset(sql server table).- Worked on a product that lets user configure relationships between two or more than two datasets (sql server table) through UI by using Join conditions which will be evaluated in the background job.- Worked on a product that lets user configure relationships between their store locations and known places on earth based on geospatial data. And give them demographic data according to given configuration.- As a part of product feature where user were creating relationship between two and more than two datasets( sql server table), I had to design a dependency infrastructure where if change in any source dataset happens then automatically trigger background jobs on dependent datasets to recalculate value for the configuration. Show less