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Junior CS student building practical AI and data skills

I study computer science at CSULB and have completed a Pfizer Advanced externship focused on AI document insights and data extraction.

Work samples

Portfolio includes coursework and work completed during the Pfizer Advanced externship, focused on document insights, data extraction, and related AI techniques.

  • Multithreaded Bubble Sort
    Multithreaded Bubble Sort

    Implemented a C++ sorting program using 16 worker threads to process designated segments of integer arrays; compared the threaded workflow with sorting logic on test inputs. Used std::thread, std::mutex, and a shared swap counter to coordinate execution and protect updates to shared state; investigated compilation and runtime behavior.

    C++
  • Automated Environmental Sensor System
    Automated Environmental Sensor System

    Built a Raspberry Pi-based data acquisition prototype integrating temperature, humidity, and light sensors; wrote Python polling and timestamped logging routines. Analyzed sensor readings in MATLAB and troubleshot calibration drift to improve data accuracy; coordinated hardware/software integration in a four-person team. Documented the system architecture, setup, and results and presented the prototype to faculty reviewers.

    Raspberry PiPythonMATLAB

About me

I study computer science at CSULB and have completed a Pfizer Advanced externship focused on AI document insights and data extraction.

I am Christina Marangopoulos, a junior Computer Science student at California State University Long Beach pursuing a bachelors degree. I have limited formal work experience and I completed the Pfizer Advanced: AI-Powered Document Insights & Data Extraction externship as part of my learning path.

Externships

Pfizer Advanced: AI-Powered Document Insights & Data Extraction Externship

Pfizer

Experience

Computer Science Tutor

Cypress College, Cypress, CA · Aug 2022 - Jan 2025

Server

Ouzo & Feta, Huntington Beach, CA · Aug 2023 - May 2024

Education

California State University, Long Beach

B.S. Computer Science · Class of 2028

Skills

PythonMachine learning fundamentalsData extraction methodsDocument processingBasic AI conceptsCS fundamentals

Multithreaded Bubble Sort

Implemented a C++ sorting program using 16 worker threads to process designated segments of integer arrays; compared the threaded workflow with sorting logic on test inputs. Used std::thread, std::mutex, and a shared swap counter to coordinate execution and protect updates to shared state; investigated compilation and runtime behavior.

C++
View all work

Automated Environmental Sensor System

Built a Raspberry Pi-based data acquisition prototype integrating temperature, humidity, and light sensors; wrote Python polling and timestamped logging routines. Analyzed sensor readings in MATLAB and troubleshot calibration drift to improve data accuracy; coordinated hardware/software integration in a four-person team. Documented the system architecture, setup, and results and presented the prototype to faculty reviewers.

Raspberry PiPythonMATLAB
View all work