Architected and implemented Reporting APIs for Ads served on the Apple News App.

Architected and implemented micro-service for segment developers to upload large gigabyte-sized segments.

Improved end-user experience and micro-service’s performance by sharing upload solution with another team.

Improved API performance (up to 30%) by refactoring/cleaning code, adding caching, preventing multiple calls to underlying sub-systems, removing duplicate validations, and by using smarter data structures.

Implemented a proof-of-concept for a configuration-driven services-oriented backend.

Empowered Support and Ops and API integrators to debug most of their errors by improving logging and error messages infrastructure. This also helped improve developers’ productivity.

Streamlined communication process across product stakeholders and cross-functional teams.

Java, Cassandra, MySQL, OSGi, OpenJPA, Maven, OAuth, Docker, JUnit, Swagger, Model-Based Testing, git

Re-engineered existing code into micro-services to increase scalability.

Re-engineering existing code to read/write into both MySQL and Cassandra.

Improved performance of OAuth API functionality by re-engineering code to correctly use JDBC APIs; streamlining serialization; and streamlining various call paths by providing a thin API facade.

Diagnosed and fixed major issues in time-zone handling of the configuration manager to enable solutions-architects to acquire a new customer.

Refactored code to make it simpler, easier-to-read, and easier-to-debug.

Improved error- and exception-handling throughout the code.

In chaotic situations, asked the right questions to successfully bound the problem space into smaller yet substantial iterative deliverables.

Heavily contributed to the team's success by contributing in design discussions; helping team members when they were stuck, doing code-walkthroughs; git merge-conflict resolutions; and knowledge transfers.

Java, RESTful APIs, JavaScript, JUnit, Postgres, Akka, Kafka, Maven, RestAssured, Swagger, git, agile

Designed and coded a streaming API to read incoming events and generate alerts if conditions were satisfied.

Implemented a utility using Curator Framework APIs to handle CRUD of configurations stored in ZooKeeper.

Implemented RESTful APIs to import and export files.

Coded a parameterized, multi-threaded tool to ingest data into the system.

Refactored, cleaned-up code, and fixed bugs in various subsystems to improve code quality and performance from proof-of-concept level to production-level; added error- and exception-handling; improved code's readability, maintainability, and usability.

Improved system stability by adding acceptance and integration tests for several subsystems in the product.