Data Engineer
Current
4Sale International Co. (4Sale)
2025 — Present · Cairo, Egypt
Own and operate backend and analytics systems supporting growth, marketing, and product teams across Kuwait's largest classifieds marketplace.
- Reduced analytics query latency from 10+ minutes to under 5 seconds by building a time-series analytics layer with TimescaleDB.
- Cut storage footprint by ~50% through continuous aggregates and data retention strategies.
- Built event-driven backend services on AWS, reducing incorrect push notifications by 30% and improving system reliability.
- Reduced P95 API latency from ~1.6 seconds to under 450 ms on production services.
- Built an internal scheduling platform on top of EventBridge, replacing ad-hoc automation scripts with a centralized and observable solution.
- Built internal tooling that helped teams investigate metric changes faster and reduced time spent on root-cause analysis.
- Diagnosed and fixed production data quality issues, restoring trust in analytics used for business decision-making.
AWS
PostgreSQL
TimescaleDB
DynamoDB
Python
SQL
Docker
Snowflake
