Mateusz Parafinski

Associate Solution Engineer at C3 AI
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Contact Information
us****@****om
(386) 825-5501
Location
NL
Languages
  • Polish Native or bilingual proficiency
  • English Full professional proficiency
  • Spanish Elementary proficiency

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Bio

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Credentials

  • EFSET 70 Advanced (CEFR C1)
    EF Education First

Experience

    • United States
    • Software Development
    • 100 - 200 Employee
    • Associate Solution Engineer
      • Apr 2023 - Present

    • Netherlands
    • Capital Markets
    • 700 & Above Employee
    • Software Engineer
      • Feb 2022 - Jan 2023

      Developed trading strategy applications and systems that interact with options exchanges worldwide Reduced trading downtime by multiple orders of magnitude floor wide in a critical strategy flow path ◦ Ensured smooth deployment through unit and manual testing and coordinating with stakeholders ◦ Made a proposal for further improvements to maintainability and extensibility of the system Improved visibility of the market by implementing a C++ library for collecting trades into a PostgreSQL database ◦ Used an exchange-specific protocol following its documentation, interacted with exchange representatives ◦ Managed the project from start till end, gathered requirements from stakeholders and managed expectations Rewrote a key component of Optiver’s trading infrastructure for the largest exchange in Europe ◦ Improved code quality with modern C++ techniques e.g. compile-time computation, smart pointers, optionals ◦ Ensured no trading downtime through extensive unit and manual testing and a multi-step rollout procedure Show less

    • South Korea
    • Computers and Electronics Manufacturing
    • 700 & Above Employee
    • Junior Software Engineer
      • Sep 2021 - Jan 2022

      Worked in a cloud solutions team mostly in Python and Ansible on an enterprise cloud platform for telco Worked in a cloud solutions team mostly in Python and Ansible on an enterprise cloud platform for telco

    • Netherlands
    • Capital Markets
    • 700 & Above Employee
    • Software Engineering Intern
      • Jul 2020 - Aug 2020

      Tested the functionality of Optiver’s userspace TCP implementation with a self-written Python tool ◦ Compared it to Linux TCP and userspace alternatives, found and fixed bugs in Optiver’s code ◦ Used Scapy for packet manipulation and pytest to facilitate test case creation Tested the functionality of Optiver’s userspace TCP implementation with a self-written Python tool ◦ Compared it to Linux TCP and userspace alternatives, found and fixed bugs in Optiver’s code ◦ Used Scapy for packet manipulation and pytest to facilitate test case creation

    • United States
    • Financial Services
    • 700 & Above Employee
    • Software Engineering Intern
      • Oct 2019 - Apr 2020

      • Made a tool for auto-instrumenting C++ code using LLVM and Clang tooling • Created a Python application for collecting request data from microservices on production environments • Made a tool for auto-instrumenting C++ code using LLVM and Clang tooling • Created a Python application for collecting request data from microservices on production environments

    • Netherlands
    • Financial Services
    • 700 & Above Employee
    • Software Engineering Intern
      • Jul 2019 - Sep 2019

      Developed a system processing terabytes of options market data in Java using Spark on a Hadoop cluster Worked with traders to create an automated trade analysis tool in Python using Pandas and NumPy Developed a system processing terabytes of options market data in Java using Spark on a Hadoop cluster Worked with traders to create an automated trade analysis tool in Python using Pandas and NumPy

    • United Kingdom
    • Research Services
    • 700 & Above Employee
    • Computer Science Tutor
      • Sep 2018 - May 2019

      Computer Science tutor for year 1 to year 3 undergraduate courses, such as Processing Formal and Natural Languages, Algorithms and Data Structures and Computer Systems Computer Science tutor for year 1 to year 3 undergraduate courses, such as Processing Formal and Natural Languages, Algorithms and Data Structures and Computer Systems

    • United States
    • Financial Services
    • 700 & Above Employee
    • Software Engineering Intern
      • Jul 2018 - Sep 2018

      Developed a client for a data analysis tool in C++ Managed and co-developed a project following agile Scrum methodology Interacted with databases and micro-services Worked on data parsing, post-processing and display Developed a client for a data analysis tool in C++ Managed and co-developed a project following agile Scrum methodology Interacted with databases and micro-services Worked on data parsing, post-processing and display

  • Netrologix Ltd
    • Edinburgh, United Kingdom
    • Junior Software Engineer
      • Sep 2017 - Mar 2018

      Implemented software for real-time data plotting using C# and WPF Worked on code optimisation to maximise plotting frequency Implemented UI using the MVVM pattern Implemented software for real-time data plotting using C# and WPF Worked on code optimisation to maximise plotting frequency Implemented UI using the MVVM pattern

    • United Kingdom
    • Advertising Services
    • 1 - 100 Employee
    • Data Engineering Intern
      • Jul 2017 - Sep 2017

      Created an anomaly detection tool using Python with Pandas, StatsModels and NumPy Researched and implemented different statistical methods for anomaly detection Documented work and planned future development Created an anomaly detection tool using Python with Pandas, StatsModels and NumPy Researched and implemented different statistical methods for anomaly detection Documented work and planned future development

    • United Kingdom
    • Wellness and Fitness Services
    • 200 - 300 Employee
    • Tennis instructor
      • Oct 2015 - May 2016

      Worked with other coaches Carried out trainings for groups of up to 10 children Worked with other coaches Carried out trainings for groups of up to 10 children

Education

  • University of Oxford
    Master of Science (MSc), Computer Science
    2020 - 2021
  • The University of Edinburgh
    Bachelor of Science (BSc), Computer Science and Mathematics
    2015 - 2019

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