Online Math, Physics, and Computer Science Tutoring JC-PD LLC

Affordable Online Tutoring in Computer Programming, Physics, and Math by a Physics PhD + postdoc / Math BS


$40/hr for students    Tutoring Policies at JC-PD LLC

$65/hr for businesses (industry, research labs, and private businesses for software engineering consulting/training/scientific programming/tutoring.)

Physics PhD + postdoc / Math BS tutor. Subjects: Programming -- C/C++/Java/python/C#; -- Physics, Math and CS

Time zone: CST/CDT

Sessions are online only and by appointment only. My Zoom is utilized for sessions. Lesson notes are displayed and later saved to a pdf file for students, if applicable. A tablet and stylus are used for clearer notes. Students may use the whiteboard of My Zoom or MS oneNote if available. Notes can be written with a mouse if no tablet is available.

In sessions, concepts are explained clearly if there is a need. Otherwise, practice is the focus. Active learning is best in any subject. Material and concepts are presented after a relevant practical problem is chosen. Then the required knowledge and problem solving approach and methods are presented. Teaching strategy in test taking is beneficial to many students. Teaching error-free programming techniques is valuable in CS. The approach to physics and math problems should also be an error-free one. In all technical subjects, problem solving should be accomplished in small steps, checking the consequences of each before proceeding.

I want to help students learn problematic material. Beating fear of success is possible through sustained small successes. The only real teaching/tutoring goal is to teach a student everything the teacher/tutor knows so that the teacher/tutor is no longer necessary.

I have a past total of about 4 years of part-time tutoring experience in St. Louis, MO for a private company and, in Edwardsville, IL for SIUE. I have additionally about 1.5 years of part-time and periodically full-time experience (2016 - 2017) with online or primarily online tutoring employers. I began this tutoring business in June, 2017, which has been a full-time job. Since November of 2017, I have had more than 2100 sessions with 224 students (as of Dec. 2022). Many sessions lasted 2 hours or more. Some students have had many sessions. A few students have been with me for years.

I am a former part-time software engineering consultant using C++ for a US industry in PA (2019). Also, in industry, I have 6 years of experience as a programmer/software engineer. I have 12 years of programming experience in my scientific research at Wash U School of Medicine in St. Louis. Through my dissertation and postdoc, I have 5 years of FORTRAN programming experience. At Wash U School of Medicine, I have 8 years of part-time UNIX system administrator experience.

Subjects Tutored in Math, Physics, and Computer Science

Computer Science Tutoring, CS Tutoring, Programming Tutoring

Physics Tutoring, AP Physics Tutoring

Mathematics Tutoring, Calculus Tutoring

General Tutoring: Research help; Homework Help; Students of all ages welcome

I am also open to helping with research projects, theses, or dissertations in any field (especially HRV) requiring math, statistics, physics, programming, and certain areas of engineering, if there is a good fit.

Students of all ages are welcome. I have had C programming students as young as 10 and 14. In java (AP CS), I have tutored 8th grade, 9th grade and HS students, and several HS AP Physics students. I have had a 12th grader learning Java enterprise apps (then moved to C# .Net web forms). I have had one 8th grader and two 9th graders in advanced math classes. I have tutored math, physical science, and astronomy for a student in 7th grade. I have taught a 7th grader physics with a portion of Hewitt’s Conceptual Physics (slowly). I have had students in research, students working on their Ph.D. dissertation, students working on their MS thesis, and students working on their MS or MBA, as well as elementary students, HS students, and undergraduates in CS (mostly) or engineering. I have also helped an industrial research professional Ph.D. with C and C++. Lately I have been getting more MS students working on CS-related degrees.

Optional Homework Help - Doing your Homework

  1. Your homework will be completed by JC-PD LLC.

  2. You would be first required to supply the email address of the individual who will pay for the homework help.

  3. A completion date and time must be agreed upon. Last-minute homework help is unlikely since JC-PD LLC is not an on-demand service. All services at JC-PD LLC are scheduled appointments. Almost always, a minimum of 24 hours before the completion date/time is required for acceptance of homework. The rate is $40 per hour.

  4. Next, you would be required to supply all relevant files required to complete the homework - instructor supplied code (for programming) and instructions. Input files are also required (for programming).

  5. The actual charge for homework completion is calculated by the time required to complete the homework. Generally estimates prior to homework completion are not provided.

  6. Your homework will be completed efficiently and correctly. For computer science assignments, code will be tested before you receive it, and you should test your code also after receiving it. For other subjects, solutions would be provided in a pdf file, and you should review the returned solutions.

  7. It is very rare that a homework assignment will not be completely correct when returned to you. Generally, if there are potential problems with the homework, you would be informed of that before the assignment is attempted. You would have the option of not using JC-PD LLC, of course, in such cases.

  8. Generally, students are happy with the homework completed by JC-PD LLC. I understand assignments created by CS instructors. I know enough to have no problems understanding assignment instructions. Some instructors do not give well-prepared instructions, unfortunately.

  9. In some cases where the assignment is very short, it is possible to give a reasonable estimate of the time required to complete the assignment. If the assignment requires only 30 minutes, you would be charged $20.

  10. Payment is required within 24 hours of completion of the assignment. An invoice will be sent when the homework is complete.

Approximate availability (CST/CDT) for Tutoring sessions

Sunday12:00 PM -- 02:00 PM; 03:00 PM -- 12:00 AM
Monday12:00 PM -- 02:00 PM; 03:00 PM -- 12:00 AM
Tuesday12:00 PM -- 02:00 PM; 03:00 PM -- 12:00 AM
Wednesday12:00 PM -- 02:00 PM; 03:00 PM -- 12:00 AM
Thursday12:00 PM -- 02:00 PM; 03:00 PM -- 12:00 AM
Friday12:00 PM -- 02:00 PM; 03:00 PM -- 12:00 AM
Saturday12:00 PM -- 02:00 PM; 03:00 PM -- 12:00 AM

For more information or to schedule a session, please send a message below, or call or text (580) 919-2484, or send an email to (

Contact Information for JC-PD LLC online tutoring.

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Copyright © 2017- Peter Domitrovich, Ph.D. JC-PD LLC. All rights reserved. Written by Peter Domitrovich, Ph.D.