Hello, I'm
Timothy Chang
Senior Data & Software Engineer — building scalable data systems and backend platforms.
About
Senior engineer with 8+ years building data systems and backend platforms at companies like Instagram, Amazon, and Meta. I specialize in scalable data pipelines, ML feature engineering, and high-throughput microservices.
Most recently at Instagram supporting the Ads Creation platform, where I've reduced pipeline compute costs by 35% and helped drive a 2% lift in campaign creation rates. Previously led device launch automation at Amazon and built identity resolution systems at Meta.
Download Resume →
Projects
Data Platform
A simulated big tech data infrastructure for capturing and routing logging events. Events are written to both a Hive-backed data lake for batch analytics and a real-time monitoring pipeline, mirroring the dual-write patterns used at companies like Meta and Google.
Spark Pipeline Lab
A hands-on EMR cluster project exploring Spark pipeline optimization techniques. Covers job tuning, partition strategies, shuffle minimization, and executor configuration to improve throughput and reduce compute cost on large-scale data workloads.
Federated
A data discovery tool for surfacing hiring and interview trends across companies and roles. Aggregates signals from federated data sources, enabling engineers and recruiters to query and analyze patterns in technical hiring over time.
Skills
Languages
- Kotlin
- TypeScript
- Python
- SQL
- R
- JavaScript
- Java
Cloud & Infra
- AWS
- Snowflake
- Docker
- Airflow
- Kafka
- Spark
Databases
- PostgreSQL
- MySQL
- Redshift
- DynamoDB
- Hive
- Presto
Engineering
- Microservices
- Pub/Sub
- Data Governance
- CI/CD
- Git
Get in Touch
Whether you have a question, an opportunity, or just want to say hi — drop me a message.