Jestin Mathew

1.) 'MLOPS FeatureStore' is a centralised repository to store and quickly access all your features sets for training and analysis purposes across Target.

• Worked on creating new Online Feature Store which uses GCP Vertex AI Bigtable Feature Store for serving real time features
• Created multi-step KFP Pipeline for creating an Offline Feature as well as materializing it to Online Feature in GCP Vertex AI Pipelines
• Created wrapper CRUD APIs for creating teams and managing secrets for Offline Feature Store

2.)'Merchx' is a web app replacing Microstation CAD used for merchandising categories over store plans saving licensing cost as well as 26,500 man hours.

• 8 New Microservices in implemented Java and Kotlin along with Vela/TAP(Target's CICD) cluster creation for dev, stage & prod, Grafana Metrics, Dashboards and Alerts setup successfully along with OAuth2
• 1st Microservice created in Target with Spring Boot(3.1.8) and latest LTS version of Java(17) with migration of existing services to same along with Kafka Producers and Consumers for projects, transitions and category placements with retry logic and slack integration of failing APIs
• Designed and Implemented Bulk Save / Auto Save which does all complex CRUD operations of category placements in a single API and created New Services for Creating Images/Pdfs of category placements asynchronously and uploading to TOSS(Target's AWS S3) and downloading from TOSS eliminating share-point storage

• Working on core microservices for auditing, notification, s3 and other services which is used across health continuum inside/outside Philips
• Created as well as enhanced/improved existing APIs
• Decommissioning/Deprecating APIs using custom filters
• Migrated postgres schemas using Flyway and exposing health/info APIs
• LLDD with Sequence diagram, Component Diagram and Class Diagram for new APIs created

• Worked for Ulta Beauty U.S
• Client to create microservices using Reactive Java Webflux
• Created APIs to retrieve data from BigQuery and Commerce Tools using spring webflux
• Modified Drool Rules to save data based on various business rules
• Persisted data received from GCP Pub-Sub asynchronously
• Migration of manual doc Swagger to code based implementation

• Implemented User Stories with full stack nature creating frontend on JSPs and AngularJs and using Java for backend for educational exams in TCS ION
• Worked on Test Center Management (TCM) module
• Created TC Availability Calculator using AngularJS for viewing availability, booking capacity of TCs for an year
• JSPs for different tabs created for mapping of TCs to LANS and Rooms