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Experienced Computer Science & IT Tutor | Python, C++, Java
Harold S.

Your first lesson is backed by our Good Fit Guarantee

Hourly Rate: $25
Response time: 16 minutes

About Harold


Bio

Hello!
Whether you are trying to untangle a complex coding error, prepare for a rigorous AP Computer Science exam, or master data science tools like Python and Pandas, having the right guidance changes everything. Backed by a Master’s degree in Computer Applications and my educational background from Rutgers University–New Brunswick, I bring over 25 years of extensive teaching experience in computer science and information technology to help you succeed.

Throughout my career, I have had...

Hello!
Whether you are trying to untangle a complex coding error, prepare for a rigorous AP Computer Science exam, or master data science tools like Python and Pandas, having the right guidance changes everything. Backed by a Master’s degree in Computer Applications and my educational background from Rutgers University–New Brunswick, I bring over 25 years of extensive teaching experience in computer science and information technology to help you succeed.

Throughout my career, I have had the privilege of guiding more than 1,200 students across the United States, United Kingdom, Canada, Australia, and worldwide. I regularly partner with learners at every stage—from middle and high school students conquering AP Computer Science (A and Principles) or IB Computer Science (SL and HL), to university undergraduates and IT professionals aiming to elevate their technical skills.

My core technical expertise spans Python (with a specialized focus on data science and libraries like Pandas), Machine Learning, and Data Visualization using Power BI and Tableau. I also teach core programming languages such as C, C++, and Java, manage database technologies including MySQL, Oracle, and MongoDB, and lead structured learning in web development frameworks and fundamental Data Structures.

Rather than relying on generic methods, my approach focuses on breaking down intimidating technical hurdles into clear, logical, and manageable steps. I believe true mastery comes from combining a strong conceptual foundation with practical application. Every tutoring session is fully tailored to your unique pace, current level, and specific goals—whether you need targeted test preparation, deep conceptual clarity, or hands-on support for challenging assignments.

I pride myself on clear, open communication and maintaining an encouraging environment where questions are always welcomed. If you are ready to overcome academic challenges, I invite you to reach out. Let’s connect today to map out your path to success.


Education

University of Maryland
Computer Science
Rutgers University–New Brunswick
Masters
  • Licensed teacher

Policies


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Approved Subjects

C

C

I love helping students conquer C programming by breaking down notoriously tricky concepts like memory management, pointers, and dynamic arrays into clear, manageable steps. Instead of letting segmentation faults and compiler warnings cause frustration, we walk through debugging together to build strong low-level problem-solving habits. Whether you are trying to ace a university systems course, understand how hardware and software interact, or finish a tough coding assignment, I tailor every session to your pace. My goal is to strip away the intimidation of low-level languages and give you rock-solid command over C.
Java

Java

I enjoy guiding learners through the entire Java ecosystem, starting from solid core fundamentals and object-oriented principles all the way up to advanced topics like multithreading, collections, and backend architectures. Rather than sticking to rigid academic scripts, I work side-by-side with you to write clean code, tackle tricky compiler errors, and understand how everything connects under the hood. Whether you are preparing for technical interviews, college exams, or building your own software application, I adapt each session to what you need. My ultimate aim is to make backend development approachable and help you become a self-sufficient, confident programmer.
Python

Python

I am a dedicated computer science and IT educator with extensive experience helping students master Python programming from the ground up. My teaching approach focuses on breaking down complex coding concepts, debugging techniques, and practical application into easy-to-understand lessons. Whether you are learning basic syntax, object-oriented programming, or working on custom coding projects, I tailor each session to your unique learning goals. I am passionate about building student confidence and empowering learners of all levels to succeed in their academic and professional tech journeys.
SQL

SQL

I help students and professionals get comfortable writing clean, efficient queries and designing solid relational databases from scratch. Rather than just memorizing syntax, we focus on real-world problem solving—like optimizing slow-running queries, writing complex joins, subqueries, and structuring tables the right way. Whether you are prepping for a data analyst interview, tackling a college database course, or trying to clean up messy data, I adapt our time to your exact needs. My goal is to make database management click so you can pull insights and manage data with absolute ease.
Computer Programming
General Computer
HTML
JavaScript
Microsoft Excel
Microsoft PowerPoint
Microsoft Word
R
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Response time: 16 minutes
Hourly Rate: $25
Response time: 16 minutes
Contact Harold