Jiajun Liu

Jiajun Liu

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CS + DS @ UC Berkeley | Prev SWE Intern @ Microsoft
Berkeley, California, United States
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Jobs verified_user 0% verified
  • UC Berkeley Electrical Engineering & Computer Sciences (EECS)
    Teaching Assistant
    UC Berkeley Electrical Engineering & Computer Sciences (EECS)
    Jan 2026 - Current (9 months)
    For CS 186: Database Systems
  • U
    Tutor
    UC Berkeley College of Computing, Data Science, and Society
    Aug 2025 - Dec 2025 (5 months)
    For Data 101/CS187: Data Engineering
  • Microsoft
    Software Engineer Intern
    Microsoft
    May 2025 - Aug 2025 (4 months)
  • Passport
    Project Manager
    Passport
    Aug 2024 - Jan 2025 (6 months)
    through Berkeley Codebase
  • Squarespace
    Software Engineer Intern
    Squarespace
    May 2024 - Aug 2024 (4 months)
  • D
    Data Consultant
    Jan 2024 - Current (2 years 9 months)
    Worked on a project with Walmart, leveraging depth-sensing vision systems to enhance a model for precise object counting in video footage of employees placing items on and off palettes to optimize order accuracy and inventory management.
  • S
    Senior Mentor
    Jan 2024 - May 2024 (5 months)
    Led junior mentors in helping teach instructional sections for an intro computer science course (CS61A). Also conducted weekly instructional sections on my own, focusing on fundamental CS topics such as abstraction, recursion, OOP, trees, and Scheme.
  • Meta
    Software Developer
    Meta
    Jan 2024 - May 2024 (5 months)
    Built a video processing tool to accurately track movement between frames utilizing C/C++ and Libvpx through Berkeley Codebase.
  • Walmart
    Data Consultant
    Walmart
    Jan 2024 - May 2024 (5 months)
    Leveraged depth-sensing vision systems to enhance a model for precise object counting in video footage of employees placing items on and off palettes in order to optimize order accuracy and inventory management through Berkeley SAAS.
  • D
    Data Consultant
    Oct 2023 - Dec 2023 (3 months)
    Created an NLP pipeline for Mercari, a digital marketplace, aiming to analyze search trends within specific categories through Berkeley SAAS.
  • C
    Junior Mentor
    Computer Science Mentors
    Sep 2023 - Jan 2024 (5 months)
    Conducted weekly instructional lectures for a small group of students in CS88, focusing on fundamental CS topics such as abstraction, recursion, OOP, and trees.
  • Etsy
    Software Developer
    Etsy
    Sep 2023 - Dec 2023 (4 months)
    Reengineered the image upload pipeline for Etsy, an e-commerce company focused on vintage and artisanal products through Berkeley Codebase.
  • Triplebar
    Research Intern
    Triplebar
    Sep 2023 - Dec 2023 (4 months)
    Built a strain history database tool to visualize strain lineage information for Triplebar, a company that focuses on using synthetic biology techniques to create products that nourish, heal, and sustain our planet. Presented research findings at UC Berkeley Data Discovery Program showcase to 100+ students, professors, and data science professionals after internship conclusion.
  • D
    Data Mentorship Developer
    Aug 2023 - Jan 2024 (6 months)
    Completed an intensive training program focused on real-world data analysis through case studies, gaining expertise in data manipulation, visualization, and analysis using Python to prepare for a project with Mercari.
  • UC Berkeley Electrical Engineering & Computer Sciences (EECS)
    CS61A Academic Intern
    UC Berkeley Electrical Engineering & Computer Sciences (EECS)
    Aug 2023 - Dec 2023 (5 months)
    Provided support to teaching assistants during instructional lab sections by assisting students in debugging their code. Course content included abstraction, recursion, OOP, trees, complexity, interpreters in Python, Scheme, and SQL.
  • S
    Software Developer
    Feb 2023 - May 2023 (4 months)
    - Developed a donation management portal with 7 team members for Insight Housing (formally Berkeley Food and Housing Project), a local non-profit dedicated to providing food, housing, and stability to the underprivileged across the Bay Area. - Built dashboard using React.js, Node.js, Express.js, and PostgreSQL for users to submit and manage donations
  • Codebase
    Software Developer
    Codebase
    Jan 2023 - Current (3 years 9 months)
    A UC Berkeley student organization dedicated to building software projects for high-growth tech companies.
  • D
    Data Foundations Developer
    Jan 2023 - Sep 2023 (9 months)
    - An organization dedicated to empowering students to explore Statistics and Data Science applications - Participated in a rigorous training program and attended weekly technical workshops to build real-world, relevant projects using skills and concepts such as probability, data visualization, and linear regression
  • University of California, Berkeley
    Administrative Assistant
    University of California, Berkeley
    Aug 2022 - Aug 2023 (1 year 1 month)
    UC Berkeley Music Department - Assisted students with booking practice rooms, presenting curriculum info, and resolving inquiries at the front desk for 10+ hrs/week - Managed office administration such as filing paperwork, sending mail, and corresponding with students and teachers
  • FDA
    Summer Research Intern
    FDA
    Jul 2021 - Aug 2021 (2 months)
    Food and Drug Administration, Oncology Center of Excellence Summer Scholars Internship - Researched and collaborated with interns and mentors to develop a presentation about breast cancer, presented to a group of 100+ medical professionals - Selected as team captain; managed to ensure project viability
Education verified_user 0% verified
  • University of California, Berkeley
    bachelor, Bachelor of Arts - BA Computer Science Data Science
    University of California, Berkeley
    Jan 2022 - Jan 2026 (4 years 1 month)
  • The Johns Hopkins University
    Summer Program Pre-College Medical Intensive Program
    The Johns Hopkins University
    Jan 2020
  • L
    High School Diploma
    Lake Braddock Secondary
    Jan 2018 - Jan 2022 (4 years 1 month)
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