• Improved Rerank API performance by 10% through implementation of Sonic Library for JSON encoding/decoding• Engineered efficient binary conversion system for gRPC product inference, handling 1000x100 feature matrices• Led the implementation of New Relic transaction monitoring, facilitating accurate identification of performance bottlenecks in the rerank process.• Enhanced system observability by implementing gRPC retry mechanisms and custom fault tolerance strategies.• Created and maintained extensive technical documentation for critical systems including BLS architecture, Feature Store API, and Flash Sale Rerank Analysis.• Designed and implemented A/B testing infrastructure, ensuring data accuracy for business-critical experimentation.• Collaborated with multiple teams (Data Science, Machine Learning Platform, Ads) to successfully deliver complex integrations and performance improvements• Streamlined BLS implementation for the DS team, enabling independent model deployments and reducing operational dependencies

Dolap | Product & Recommendation • Responsible for resolving Couchbase performance issues by utilizing Elasticsearch, ensuring precise updates to specific product groups, including those associated with particular sellers or qualifying for specific promotions. • Address the limitations of N1QL queries in Couchbase, especially when dealing with sellers offering a substantial number of products (e.g., 40K), preventing query failures and ensuring data updates. • Implemented an API to streamline the process by sending product update events to Kafka seamlessly after executing Elasticsearch queries rather than using bulk CouchBase queries.

•Built and rolled out an internal tool used by 25 engineers on the Software Supportteam.•This internal tool migrated from a .NET Framework based desktop application to aweb application. Built the tool using .NET Core as a backend framework and Angularfor frontend.•Increased the code coverage of the repository %5 by implementing unit tests byusing NUnit with .NET Core and Angular.

•Built a Kanban-based project management application depending on the forminformation the user submitted in a cross-functional team.•Learned React and Redux from scratch.

•Implemented a tab header component 3 times using vanilla JavaScript, AngularJS,and Angular respectively. After completing a component, I upload it on npm.Managed to integrate my component with other intern's components to build acustom project.•Understand CI/CD concepts and configured my first. .YAML file for CI pipeline onGitLab.After GitLab CI, I teached myself Docker fundamentals and related DevOpsconcepts.•Completed tasks on C# programming language related to, Object-Oriented Design,Asynchronous Programming, and Design Patterns.

Building the admin panel of an application which is used for communication in a corporation that has over 10.000 users. - Vue.js - Node.js