David Rozenberg, APIs Developer in New York, NY, United States
David Rozenberg

APIs Developer in New York, NY, United States

Member since August 12, 2021
David is a back-end-leaning full-stack software engineer with a breadth of experience in different industries, including the clinical trials space, real estate tech, and defense. He enjoys designing and building applications and APIs, architecting systems, and learning new skills.
David is now available for hire


  • Amazon.com
    Java, JavaScript, Python, Scala, AWS, Data Pipelines
  • Medidata Solutions
    Ruby on Rails (RoR), JavaScript, React, AWS, PostgreSQL, SQL, APIs...



New York, NY, United States



Preferred Environment

Ruby on Rails (RoR), React, Python, AWS, CSS, JavaScript

The most amazing...

...thing I've developed is Roomeze, an app to help people find multi-bedroom apartments and roommates, helping put thousands of people into apartments in NYC.


  • Senior Software Engineer

    2020 - PRESENT
    • Developed a quick look experience allowing customers to quickly evaluate items and add them to cart without navigating away from the shopping experience.
    • Built a scalable and maintainable data pipeline to generate different recommendation strategies for customers.
    • Oversaw the upgrade of various systems to Amazon Web Services (AWS) from legacy technologies.
    Technologies: Java, JavaScript, Python, Scala, AWS, Data Pipelines
  • Senior Applications Engineer

    2015 - 2020
    Medidata Solutions
    • Served as a feature lead developing a new statistical analysis tool for clinical trials. Designed APIs, front end, and back end to monitor key risk indicators.
    • Developed applications and automated tests on microservice architecture handling authorization, authentication, core objects, and administrative UI.
    • Selected for a high-performing team to implement ETL process migrating millions of legacy records into the new Medidata platform.
    Technologies: Ruby on Rails (RoR), JavaScript, React, AWS, PostgreSQL, SQL, APIs, Graph Databases


  • Roomeze

    Built a real estate web application from the ground up, allowing users to search for rooms, roommates, and apply for apartments, placing more than 2,000 people into NYC apartments and supporting traffic of around 20,000 users per week.


  • Languages

    JavaScript, Python, SQL, Java, Scala, CSS
  • Frameworks

    Ruby on Rails (RoR)
  • Libraries/APIs

  • Other

    AWS, Engineering, Software Engineering, APIs, Biomedical Skills
  • Storage

    PostgreSQL, Graph Databases, Data Pipelines
  • Tools



  • Bachelor's Degree in Biomedical Engineering
    2005 - 2009
    Boston University - Boston, MA, USA

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