Alex Ahn Software Engineer


Alex is a Software Engineer at Facebook.

He is a passionate builder of technology.



Facebook | Software Engineer

Sept 2018 - Present

• Instagram Ads Team


Facebook | Software Engineer Intern

June 2018 - Sept 2018

• News Feed Growth Team


Moloco | Software Engineering Intern

May 2017 - Present

• Collaborated in building a mobile DSP infrastructure scaled for 1000 ad campaigns on both frontend (AngularJS) and backend (Go).

• Launched an Android, iOS, Unity, and JavaScript SDK for mobile event tracking using RESTful API (Moloco VAN).

• Built an internal chat bot for campaign management with ad-hoc features such as summarizing KPIs from cloud database (BigQuery).

• Automated and simplified over 35% of the campaign operation work flow by scripting tools such as price model generator.


Dept. Computer Science, JHU | Research Assistant

Sept 2016 - May 2017

• Developed various machine learning based prediction models using raw data scraped from the MLB Gameday website using R and Python.

• Designed unique features, automated the model training process, and simplified cross-validation and ROC analysis for evaluations.

• Created an API for predicting the next pitch ball type using pre-trained models for MLB team managers.


Ex Parte | Data Engineer

Dec 2016 - April 2017

• Designed a baseline prediction model for legal analytics in judicial decisions made in U.S. Court of Appeals for the Federal Circuit.

• Built data ETL pipelines for constructing a relational database from world-wide-web, legal documents, and existing databases.


Course Assistant | JHU

Jan 2016 - May 2017

• Intro to Machine Learning (Jan 2017 ~ May 2017)

• Data Structures (Sept 2016 ~ Dec 2016)

• Oral Presentations (Jan 2016 ~ Dec 2016)


Institute for Data Intensive Engineering and Science | Research Programmer

May 2016 - Aug 2016

• Wrote an optimization program in JavaScript for visualization of a network of multi-dimensional-nodes on HTML Canvas.

• Devised functions for producing optimized coordinates for each node and edge curve point by calculating collisions and noise levels.


Republic of Korea Army | Sergeant Squad Leader

Nov 2013 - Aug 2015

• Served as a military demolitionist in the Engineering Battalion of the 21st infantry division for 2 years.

• Awarded the Best Squad Leader award from division commander during 2015 spring training camp.


Standard Charatered Bank | Data Analyst Intern

Aug 2013 - Nov 2013

• Assorted product sales data (~$3.5billion/yr) from the database, conducting linear regression analysis using Excel for sales projections.

• Summarized recent sales trends, estimated future revenues, and identified potential target clients (sales flux over 15%) using pivot tables, creating a business report along with graphical models to represent the performance of company products and sales teams on weekly basis.


Johns Hopkins University | Student

Sept 2012 - Present

Computer Science, Applied Mathematic & Statistic Major