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J
Jeffrey X.

Jeffrey X.

Private Contract Employee

USA flagPhiladelphia, Usa

Key Skills

Software

No software listed

Top Subject Matter

Life Sciences
Education
Legal Services & Contract Review

Top Data Types

TextText
DocumentDocument

Top Task Types

Question AnsweringQuestion Answering

Freelancer Overview

Private Education Tutor, TopTutors LLC. Brings 10+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include N and A. Education includes Master of Science, University of Pennsylvania (2024) and Bachelor of Arts, University of Pennsylvania (2024). AI-training focus includes data types such as Text and labeling workflows including Question Answering, Evaluation, and Rating.

Labeling Experience

Handshake AI Specialist

ImageImageRLHFRLHF

Worked for Handshake AI as a specialist on an Image generation project where we would both create prompts for a model and refine the produced images through RLHF.

2025 - Present

Private Education Tutor, TopTutors LLC

TextTextQuestion AnsweringQuestion Answering

Curated individualized study programs to help learners prepare for SAT and AP standardized exams. This included structuring practice questions and supporting students’ understanding of answers and explanations in an iterative tutoring format. The work functioned as AI-adjacent QA coaching by repeatedly refining question-solving approaches based on student feedback. • Tailored weekly study plans for up to five students • Guided question practice for SAT/AP content areas • Provided iterative feedback to improve accuracy and reasoning • Adapted pacing and materials based on learner performance

2019 - 2021

Educational Tutor, Kumon Math & Reading Program

TextText

Tutored students in math and reading using a small-group learning format. The role involved assessing student progress through ongoing checks and feedback, then adjusting instruction accordingly. This training emphasized structured practice and evaluation similar to supervised feedback loops. • Provided instruction to 30+ students per week in math and reading • Delivered learning in a small-group setting across ages from preschool to high school • Transitioned operations from in-person to online during the pandemic • Supported remote learning optimization for over 100 clients

2017 - 2021

Education

U

University of Pennsylvania

Master of Science, Chemistry

Master of Science
2022 - 2024
U

University of Pennsylvania

Bachelor of Arts, Biochemistry

Bachelor of Arts
2020 - 2024

Work History

P

Penn Medicine

Clinical Research Coordinator

Philadelphia
2024 - Present
U

University of Pennsylvania

Undergraduate Learning Assistant

Philadelphia
2023 - 2024