* Mid-level BE engineer on zero-to-one enterprise features suggesting text rewrites

* Designed and created CRUD patterns for storing business-specific data (DynamoDB, Java Spring, JUnit)

* Implemented server-side UI experience for appearance of individual suggestion cards (Scala)

* Mid-level backend engineer (consumer apps) working on data pipelines, microservices and endpoints written in the Twitter stack (Scala/Finagle/Finatra) and hosted on AWS

* Designed, led, and executed backend feature work: wrote tech specs and tickets matching product requirements and did > 75% of implementation for push notifications (APNS and in-app), user handles, and checkins, including Scala backend and Mongo data structures and endpoints with unit tests

* Conceived of and created 'Spirit City' feature for Year in Review, where users learn which city is overindexed on the kinds of places they go to: wrote offline job (Spark SQL) and updated backend endpoints & frontend code (responsive JS/CSS/HTML)

* Wrote Scalding jobs to backfill historical user location data from deprecated pipelines into AWS S3; performed ad hoc Spark SQL and Python queries in Databricks to verify successful migration

* Mentored new engineers to be productive in 90 days

* Entry-level software engineer working on a full-stack web team for billing external developers (React, Redux, Cupcake)

* Based on senior engineer’s tickets and Figma designs, implemented new and simplified Pay-As-You-Go billing model, including front-end code (public facing and internal admin pages) and backend endpoints, tasks, internal admin pages, and emails with unit and integration tests (Scala, MongoDB, Apache Thrift, JUnit).

* Cleaned up tech debt from old billing models, safely deleting >15k lines of code of old emails and automated tasks, legacy billing data models and business logic services, related unused React pages

* Created overview documentation on alerts and metrics, offline batch processing jobs, and online Scala endpoints

Designed and taught 12 undergraduate Greek courses