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Advanced Data Engineer & Computer Science Tutor
Charles A.

3.0 (2 ratings)

5 hours tutoring

Your first lesson is backed by our Good Fit Guarantee
Hourly Rate: $55
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About Charles

Bio

Hi, I'm Charles! I'm a Data Engineer with a strong background in computer science, programming, and AI model development. I'm currently pursuing my Master's in Data Science and MBA at Carnegie Mellon University, where I've deepened my expertise in machine learning, LLMs, and business intelligence. My technical foundation includes a Bachelor's in Computer Science, also from Carnegie Mellon.

I've been actively coding for several years with extensive experience in Python, C++, JavaScript, and...

Hi, I'm Charles! I'm a Data Engineer with a strong background in computer science, programming, and AI model development. I'm currently pursuing my Master's in Data Science and MBA at Carnegie Mellon University, where I've deepened my expertise in machine learning, LLMs, and business intelligence. My technical foundation includes a Bachelor's in Computer Science, also from Carnegie Mellon.

I've been actively coding for several years with extensive experience in Python, C++, JavaScript, and Solidity. As a freelance Data Scientist, I worked with Turing and Home Help Global, creating machine learning models to analyze stock markets and developing automation scripts that reduced manual data processing time by 30%. I also built a framework to evaluate AI-generated code, achieving 15% faster runtime in benchmark tests. These experiences taught me how to break down complex programming concepts into clear, understandable steps.

Beyond my professional work, I've mentored young professionals as a Digital Youth Fair leader in the USA, coaching individuals on building profiles and securing jobs on platforms like Upwork and Fiverr. I believe patience, clear communication, and adapting to each student's learning style are key to making challenging subjects accessible and enjoyable.

Whether you're a high school student tackling Python for the first time, a college student working through data structures, or someone preparing for coding interviews, I'm here to help. I can assist with Python, Java, JavaScript, C++, data science fundamentals, and machine learning. My approach is hands-on and supportive I focus on building understanding from the ground up. Let's work together to reach your goals!

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Education

Carnegie Mellon University
Computer Science
Carnegie Mellon University
Masters

Additional Languages

Spanish
German

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Approved Subjects

Biostatistics

Biostatistics

I enjoy helping students and researchers make sense of biostatistics, and I bring a solid mix of statistical knowledge and hands-on experience with R, SPSS, and Python. Over the years, I’ve worked on everything from clinical data analysis and survival models to interpreting messy real-world datasets, and I know how overwhelming it can be when you're just getting started or stuck on a tricky assignment. My goal is to meet you where you are whether you need help understanding a concept, running a specific test, or writing code that actually works and walk through it together in a way that makes sense. I’m patient, practical, and focused on helping you build confidence so you can handle biostatistics on your own terms.
C++

C++

I have extensive professional experience developing high-performance applications in C++, including memory management, data structures, algorithms, and object-oriented design. I have tutored university students and working professionals in C++ topics ranging from basic syntax to advanced features like templates, STL, and multithreading. My background includes debugging complex code, optimizing for speed and efficiency, and explaining concepts clearly with practical examples. I am passionate about helping students build strong fundamentals and confidence in C++ programming.
Creative Writing

Creative Writing

I help students grow as creative writers by strengthening their ideas, structure, and personal voice. My background in teaching English and Literature has given me strong experience guiding learners in storytelling, character development, plot building, dialogue, and descriptive writing. I also support students with poetry, short stories, essays, and revision so their work becomes clearer, more engaging, and more polished. My goal is to help each student write with confidence, creativity, and purpose.
Cybersecurity

Cybersecurity

I have hands-on experience in cybersecurity, including network security, ethical hacking, cryptography, risk assessment, and incident response. I help students understand core concepts such as threat modeling, vulnerability analysis, firewalls, IDS/IPS, and secure coding practices. My background includes using industry-standard tools like Wireshark, Nmap, Metasploit, and Burp Suite, as well as preparing students for certifications like Security+ and CEH. I focus on practical, real-world scenarios to build both theoretical knowledge and applied skills in defending against cyber threats.
Data Science

Data Science

I'm a Data Engineer and graduate student at Carnegie Mellon University pursuing a Master's in Data Science and MBA, with a strong foundation in machine learning, AI model development, and programming. As a freelance Data Scientist at Turing and Home Help Global, I built machine learning models to analyze stock markets and developed Python automation scripts that reduced data preprocessing time by 30%. I also designed a framework to evaluate and improve AI-generated code quality, achieving 15% faster runtime in benchmark tests. My experience spans Python, C++, JavaScript, and data science fundamentals, and I enjoy breaking down complex concepts into clear, practical lessons for students at any level.
Essay Writing

Essay Writing

I work with students to make essay writing easier, clearer, and more effective. I can help with brainstorming, thesis statements, structure, analysis, editing, and proper referencing in MLA, APA, Harvard, Chicago, and IEEE styles. I also guide students in using evidence well, improving flow, and strengthening academic tone. I focus on helping each student produce original, well-organized, and properly formatted essays.
Linux

Linux

I have extensive hands-on experience with Linux systems, including command-line navigation, file permissions, process management, package management, and system configuration. I help students master essential tools like Bash scripting, grep, awk, sed, cron jobs, and network utilities, as well as more advanced topics like kernel tuning, virtualization, and security hardening. My background includes managing Linux servers in production environments and tutoring learners from beginners to advanced levels. I focus on practical, real-world tasks and troubleshooting scenarios to build both confidence and competence in using Linux effectively.
Logic

Logic

I have deep expertise in formal logic, including propositional logic, predicate logic, truth tables, logical equivalences, quantifiers, and natural deduction proofs. I help students understand core concepts such as validity, soundness, inference rules, and logical fallacies, as well as applications in mathematics, philosophy, and computer science. My experience includes guiding learners through symbolic translations, proof construction, and problem-solving strategies. I break down complex logical structures into clear, step-by-step reasoning to build both intuition and analytical skills.
Machine Learning/ AI

Machine Learning/ AI

I have strong expertise in machine learning and artificial intelligence, including supervised and unsupervised learning, neural networks, deep learning, natural language processing, and computer vision. I help students understand core algorithms like regression, classification, clustering, decision trees, SVMs, and reinforcement learning, as well as modern frameworks such as TensorFlow, PyTorch, and scikit-learn. My experience includes guiding learners through the entire ML pipeline from data preprocessing and feature engineering to model training, evaluation, and deployment. I focus on building intuitive understanding alongside practical coding skills, preparing students for both academic success and real-world AI applications.
MATLAB

MATLAB

I have extensive experience with MATLAB, including matrix operations, scripting, function development, data visualization, and numerical analysis for engineering and scientific applications. I help students master key concepts such as vectorization, file I/O, curve fitting, statistical analysis, and debugging techniques. My background includes using MATLAB for signal processing, image processing, control systems, and Simulink modeling in both academic and project-based settings. I focus on clear explanations and practical examples, guiding learners from basic syntax to advanced problem-solving with confidence.
React

React

I have hands-on experience building dynamic, responsive web applications with React, including functional components, hooks (useState, useEffect, useContext), state management (Redux, Context API), and routing (React Router). I help students understand core concepts like props, component lifecycle, conditional rendering, forms, API integration with fetch/axios, and performance optimization. My background includes mentoring beginners through advanced React patterns, as well as modern tools like Vite, Next.js, and Tailwind CSS. I focus on clean code practices, debugging strategies, and building real-world projects to solidify understanding.
Real Analysis

Real Analysis

I have deep expertise in real analysis, including limits, continuity, differentiation, integration, sequences, series, and metric spaces. I help students understand rigorous proofs, epsilon-delta arguments, convergence, compactness, connectedness, and the fundamental theorems of calculus. My background includes guiding learners through challenging concepts such as uniform convergence, the Bolzano-Weierstrass theorem, and Lebesgue integration. I break down abstract ideas into clear, logical steps, building both intuition and proof-writing skills.
SAS

SAS

I have extensive experience using SAS for data management, statistical analysis, and reporting in both academic and professional settings. I help students master key skills such as data import/export, merging datasets, using PROC SQL, generating descriptive statistics, and creating visualizations with ODS graphics. My expertise includes SAS Base programming, macros, PROC REG, PROC GLM, PROC MEANS, and interpretation of statistical output. I focus on practical examples, efficient coding practices, and clear explanations to build confidence and proficiency in SAS.
STATA

STATA

I have extensive experience using STATA for data management, statistical analysis, and econometric modeling in both academic and research settings. I help students master key skills such as importing and cleaning data, generating variables, running regressions (OLS, logit, probit), conducting hypothesis tests, and interpreting output. My expertise includes time series analysis, panel data, instrumental variables, and post-estimation diagnostics. I focus on practical applications, reproducible workflows, and clear explanations of STATA syntax and logic to build confidence and competence.
Tableau

Tableau

I have extensive experience using Tableau to create interactive dashboards, data visualizations, and business intelligence reports that turn raw data into actionable insights. I help students master key skills such as connecting to data sources, building charts and maps, using calculated fields, table calculations, parameters, filters, and storytelling with data. My background includes working with real-world datasets and guiding learners through best practices for design, performance, and user interactivity. Whether you're preparing for Tableau Desktop Specialist certification or building your first dashboard, I break down complex concepts into clear, practical steps.
Thesis Writing

Thesis Writing

I have supported both Master’s and PhD students in strengthening their thesis and dissertation writing across different stages of the research process. As a highly versatile master’s student, I bring strong experience in organizing ideas, refining arguments, improving chapter flow, developing literature reviews, and polishing academic language. I also guide students in citation, formatting, editing, and presenting their research in a clear, professional, and academically sound manner. I am committed to helping students produce work that is thoughtful, rigorous, and ready to meet serious academic expectations.
Algebra 1
Algebra 2
Biochemistry
Biology
C
Calculus
Chemistry
Computer Programming
Differential Equations
English
Finance
Financial Accounting
Government & Politics
Java
JavaScript
Linear Algebra
Macroeconomics
Managerial Accounting
Microeconomics
Microsoft Excel
Microsoft Word
Precalculus
Probability
Proofreading
Python
R
SPSS
SQL
Statistics
Vocabulary
Writing
Charles A.'s Photo

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Ratings and Reviews

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3.0 (2 ratings)
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Reviews

A Fantastic First Lesson with a Knowledgeable, Patient, and Caring Tutor

Charles patiently and resourcefully navigated the technical issues we were having at the start of the lesson. He was very kind and demonstrated a broad and intricate knowledge of Bayesian Statistics. He was able to incorporate comparisons between the frequentist and Bayesian approaches and the value each holds. Further, Charles showed significant and commendable care for me as a student by tailoring a lesson plan to where I was and incorporating my unique learning goals. He was able to review the materials that I had on hand and pass along relevant additional materials for me to review as part of my learning. Charles engaged me in advanced constructs while succinctly and clearly relaying the learning points in ways that made sense. I very much enjoyed my first lesson with Charles, and I hope more students will give him opportunities to teach what he is clearly so passionate and expertly knowledgeable about. Charles is the kind of tutor/teacher who gives his all for his students.

Collin, 1 lesson with Charles
Hourly Rate: $55
Contact Charles