# Tzvetelina Tzeneva

> Helping companies cut carbon at Watershed. We're hiring!

Location: San Francisco Bay Area, United States
Profile: https://flows.cv/tzvetelina

## Work Experience
### Software Engineer @ Watershed
Jan 2022 – Present | San Francisco, California, United States

### Staff Software Engineer @ Twitter
Jan 2019 – Jan 2022 | San Francisco, California, United States
ML Platform (Cortex)
- Tech Lead for ML Feature Management, a team of 10 engineers.
- Built two generations of the Twitter Feature Store product. Collaborated with teams across the company to facilitate migration and adoption.
- Filled in as senior TL for the ML Data group, 20 engineers across two teams.

Scala, Java, Python, SQL, Jupiter Notebook, Scalding/Hadoop, Airflow, BigQuery, Beam/Dataflow, Thrift, Avro, GCP

### Senior Software Engineer @ Twitter
Jan 2015 – Jan 2019 | San Francisco, California, United States
Personalization Data and Controls
- Built the data pipelines and application service for surfacing all data Twitter collected for a user, logged in or logged out.
- Worked with Legal to implemented DAA & GDPR personalization controls (user's ability to opt out of personalized ads).

Identity Bridging
- Tech lead for a team of 3.
- Data pipelines for bridging user identifiers for advertising and personalization.

Scala, Java, Scalding/Hadoop, Aurora/Mesos, Thrift

### Software Engineer @ TellApart
Jan 2013 – Jan 2015 | Burlingame, CA
Infrastructure
- AWS-based infrastructure for real-time bidding, user action tracking, data collection.

Data Platform and Reporting
- Job launching framework, Hadoop infrastructure and data pipelines for big scale machine learning, identity graph construction, and report generation. 

Python, Java, Cascading/Hadoop, Hive, MySQL, Redis, Thrift, AWS

### Senior Member of Technical Staff - Software Developer 3 @ Oracle
Jan 2011 – Jan 2013 | Redwood Shores, CA
Application Performance Management
- Designed and developed software for heap dump analysis and memory leak detection through graph mining.
- Integrated acquired products into Enterprise Manager Grid Control.

Application Performance Analytics
- Baseline and Correlation tools SDK.
- Analytics web app: ETL and front end.

Java, PL/SQL, J2EE, Oracle ADF

### Software Engineering Intern @ Oracle
Jan 2010 – Jan 2010 | Redwood Shores, CA
Front end for Oracle Entitlements Server

Java, J2EE, Oracle ADF, Weblogic Server, JUnit

### Google Summer of Code, Open Office @ Google Summer of Code
Jan 2009 – Jan 2009
Developed a new document comparison algorithm for Open Office Writer: https://gsoc-tzvetelina.blogspot.com/

C++


## Education
### Bachelor of Arts (B.A.) in Mathematics
Princeton University

### High School in Mathematics
Sofia High School of Mathematics


## Contact & Social
- LinkedIn: https://linkedin.com/in/ttzeneva

---
Source: https://flows.cv/tzvetelina
JSON Resume: https://flows.cv/tzvetelina/resume.json
Last updated: 2026-04-11