Izzy Lazerson, Performance Tuning Developer in Buffalo, United States
Izzy Lazerson

Performance Tuning Developer in Buffalo, United States

Member since September 25, 2017
Izzy is an expert developer with over a decade of experience in building database-centric applications. His extensive background extends to core database development and administration, designing back-end server APIs, and constructing front-end UIs and reporting portals. Izzy has excelled on teams of various sizes and often takes on responsibilities outside of his primary role.
Izzy is now available for hire




Buffalo, United States



Preferred Environment

Toad, Git, VS Code, Linux, Windows

The most amazing...

...thing I've developed is a highly complex, full-stack anti-money laundering (AML) application under an extremely tight deadline.


  • Senior Software Engineer

    2015 - PRESENT
    M&T Bank
    • Built back-end database systems to store AML cleansed data.
    • Worked on ETL processes that pulled and transformed data from numerous data sources.
    • Developed a back-end REST API and front-end web app to facilitate admin related tasks and analytics.
    • Drafted complex reports and dashboards for AML and comprehensive capital analysis and review (CCAR). Many of these reports were later delivered to the authorities.
    • Helped to migrate data from Oracle 11g to SQL Server 2014 to handle the AML data in the Hudson City bank acquisition.
    • Performed complex and advanced database and query tuning.
    • Refactored the regulatory and risk reporting application to safeguard it against SQL injection attacks.
    • Used the TensorFlow machine learning library to identify possible location matches in our master data management (MDM) system.
    • Followed a test-driven development (TDD) approach for all database ETL processes using Ruby-plsql-spec.
    • Set up transactional replication from our OLTP environment to the reporting environment.
    Technologies: JavaScript, Python, PL/SQL, T-SQL, Azure, SSRS, Go, Microsoft SQL Server, Oracle
  • Senior Software Developer

    2008 - 2015
    Weight Watchers
    • Built a back-end REST API and front-end web reporting/analytics portal.
    • Managed several data warehouse environments and their associated ETL processes.
    • Generated numerous reports across the enterprise including finance, HR, and supply chain departments.
    • Developed report models that enabled users to create their own reports with drag-and-drop functionality.
    • Created multiple metadata layers and entity-attribute-value models to ease BI development and maintenance; among these environments were complex ERP systems.
    • Tuned performance of multiple applications/reports including intricate query-tuning and converting many cursor-based processes to a declarative set-based approach.
    • Leveraged OLAP cubes for advanced analytics.
    • Led code reviews, established best practices, and taught classes on deep dives in various programming topics.
    Technologies: JavaScript, PL/SQL, T-SQL, Azure, SSRS, Python, Microsoft SQL Server, Oracle
  • Database Developer

    2004 - 2008
    City of New York - HRA - APS - Financial Management Unit
    • Built custom database processes to enhance the ERP system’s usability and functionality.
    • Implemented a front-end web reporting portal pulling primarily from an OLAP cube.
    • Enhanced the reporting permissions model to use row level security.
    • Generated dozens of reports that pulled from multiple modules including GL, AP, AR, etc.
    • Migrated legacy system data from multiple data sources and formats into the ERP system.
    • Developed shell scripts to launch and coordinate Oracle Financials Concurrent Requests.
    • Developed batch processes to import bank transaction files into Oracle Financials.
    • Tuned performance of multiple applications/reports.
    Technologies: JavaScript, PL/SQL, T-SQL, SSAS, SSRS, Microsoft SQL Server, Oracle


  • Book App Back-end (Development)

    Back-end demo database and API built with SQL Server and Node.js.

  • Book App Fron-tend (Development)

    Front-end demo book app built using React.

  • Sample Tax Database (Development)

    Database system to manage information on the collection of various types of taxes by a state agency.


  • Languages

    Go, T-SQL, SQL, Python, JavaScript
  • Tools

    BigQuery, VS Code, Git, Toad, SSRS, SSAS
  • Paradigms

    ETL, Business Intelligence (BI), Database Design
  • Platforms

    Oracle, Azure, Windows, Linux
  • Storage

    PL/SQL, Databases, Database Architecture, Database Testing, Microsoft SQL Server, SQL Server 2016, MySQL, PostgreSQL
  • Other

    Data, Performance Tuning, Query Optimization, Schemas, Data Engineering, Reporting, Data Migration, Data Warehousing, Data Warehouse Design, Machine Learning
  • Libraries/APIs

    Node.js, React


  • Bachelor of Science degree in Computer Science
    2000 - 2004
    SEC - Haifa, Israel


  • Data Science Certificate
  • NVCC Business Intelligence Certifcate in Database Development
    APRIL 2007 - PRESENT
  • Oracle Developer Certificate in Database Development
  • Microsoft SQL Server Developer Certificate in Database Development

To view more profiles

Join Toptal
Share it with others