William Christerson

Quantitative Developer at Xantium

New York, New York, United States

About

Experience

  • Quantitative Developer at Xantium Group - Tudor Investment Corporation
    Apr 2026 - Present · 3 mos

  • Google (Full-time · 4 yrs 4 mos)
    • Senior Software Engineer (L5)
      Nov 2024 - Apr 2026 · 1 yr 6 mos

      - Improving Google Search using structured data and large-language models (LLMs). - C++ & Java

    • Mid-Level Software Engineer (L4)
      Jan 2022 - Oct 2024 · 2 yrs 10 mos

      - Improving Google Search - Java & C++

  • Software Engineer at Bloomberg LP
    Jun 2020 - Dec 2021 · 1 yr 7 mos

    - Back-end software development for the Bloomberg terminal's execution management system (EMSX) for trading equities, futures, and options - Worked on migrating dated execution management system's feature set to new system leveraging modern C++ using internal concurrency libraries - Python & C++

  • Software Engineer at Aktiv Learning
    Jun 2018 - May 2020 · 2 yrs

    [Company formerly called "101 Edu"] - Built and collaborated on modules for Chem101 web and mobile applications - Leveraged React Native to develop customer-facing features to facilitate chemistry education, including an interface for authoring chemistry questions, an automated attendance system, and a “swipeable” extra resource menu on mobile devices - Employed company’s server-side RESTful API and Redux-Saga to manage user interfaces, including delivering features that are heavily dependent on asynchronous operations, such as a scheduling system for downloading course grade reports requiring computationally-intensive pre-processing calculations

  • Teaching Assistant / Grader at Carnegie Mellon University
    Aug 2014 - Dec 2014 · 5 mos

    - Acted as TA for Professor Po-Shen Loh’s Putnam Seminar course in preparation for Putnam Competition - Wrote solutions to problem sets from olympiad-level math competitions which were distributed to students