I build data infrastructure that scales businesses

Currently leading data engineering at z9 Ventures, where I've helped scale two 9-figure eCommerce brands. Previously co-founded companies in public safety tech and DeFi. I specialize in event-driven architectures, real-time analytics, and turning data into revenue growth.

rosenzweigari1@gmail.com(224) 249-0482Delray Beach, FL
$400K
Daily revenue enabled
$73M
Annual sales tracked
20K+
Community members grown

Work Experience

Senior Data Engineer, Team Lead

z9 Ventures
May 2023 – Present • Hybrid

Leading data infrastructure for two 9-figure eCommerce brands (aroma360.com, hotelcollection.com). Built event-driven data warehouse using Pub/Sub and BigQuery that processes millions of daily events.

  • Developed call tracking metrics that enabled scaling from $100K to $400K daily revenue
  • Led Salesforce Data Cloud rollout, creating unified customer data view across all touchpoints
  • Built real-time analytics dashboards for executive decision-making
  • Managed cross-functional team of 5 engineers and analysts

Data Engineer, Co-founder

Peer Communications
Dec 2022 – Present • Remote

Building data architecture for in-building communication systems serving Police, Fire, and EMS. Managing ETL pipelines that process regulatory data from 40+ Florida jurisdictions.

  • Built ETL pipelines with Airflow via AWS Glue and SNS
  • Automated data extraction from county websites and ArcGIS endpoints
  • Created comprehensive regulatory compliance database

Co-founder, Project Lead

Lava Financial
Nov 2021 – Dec 2022 • Remote

Led development and launch of decentralized revenue share platform on Avalanche network. Grew community to 20K+ members and raised $500K through crowdfunding.

  • Oversaw full-stack development, marketing, and community growth
  • Made 6 seed-level investments in Avalanche ecosystem projects
  • Built partnerships with 10+ DeFi protocols

Technical Skills

Languages

PythonJavaScriptJavaBash

Cloud & Infra

AWSGCPAzureDockerTerraform

Data & Analytics

BigQuerySnowflakeSparkDatabricksTableau

Databases

PostgreSQLMySQLRedisMongoDBDynamoDB

Writing

Sharing insights from building data systems at scale

Featured
8 min readDec 15, 2024

Building Event-Driven Data Warehouses: Lessons from Scaling 9-Figure eCommerce

How we built a real-time data pipeline using Pub/Sub and BigQuery that handles millions of events daily for Aroma360 and Hotel Collection.

Data EngineeringBigQueryeCommerce

From $100K to $400K Daily Revenue: The Power of Call Tracking Analytics

A deep dive into how proper attribution modeling and call tracking metrics transformed our revenue optimization strategy.

AnalyticsRevenue GrowthAttribution
Nov 28, 2024
6 min read

Salesforce Data Cloud Implementation: Unifying Customer Data at Scale

Our journey integrating Salesforce Data Cloud with existing data warehouse infrastructure to create a 360-degree customer view.

SalesforceCustomer DataIntegration
Nov 12, 2024
10 min read

ETL Pipeline Architecture for Public Safety: Processing County Data with Airflow

Building robust data pipelines to extract and normalize emergency services data from 40+ Florida jurisdictions.

ETLAirflowPublic Safety
Oct 30, 2024
7 min read

Lessons from Building a DeFi Platform: Technical and Business Insights

What I learned co-founding Lava Financial, from smart contract architecture to community building and fundraising.

DeFiBlockchainStartup
Oct 18, 2024
12 min read

Data Warehouse Design Patterns for Multi-Brand eCommerce

Architectural decisions and trade-offs when building unified analytics for multiple high-volume retail brands.

Data ArchitectureeCommerceMulti-tenant
Sep 25, 2024
9 min read

Education

Bachelor of Science, Computer Science

Loyola University Chicago

Graduated May 2022

Let's work together

I'm always interested in discussing data engineering challenges, team leadership opportunities, and innovative technology projects. Whether you're scaling a startup or optimizing enterprise data systems, let's talk.

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