Chiranjeeb Roy Chowdhury Gold Medalist, Computer Science & Maths Tutor
23 Reviews

Chiranjeet sir has been teaching my son Cambridge IGCSE maths for last few months. He has helped my son clear the concepts and understand the difficult problems with simple approach. He is extremely dedicated and punctual. He uses online tools to keep the student engaged just like in an in person class. Highly recommended if you are looking for higher level Maths tutor.

Chiranjeeb sir is very knowledgeable about coding which is rare among most computer science teachers who're only aware of theory. This is very helpful for practical exams as they require coding. Additionally, he takes classes in a concise manner hence fewer classes are required.

Mr. Chiranjeeb had been teaching to my daughter for past 10 months. My daughter was having basic knowledge on programming . Pseudo coding was new to her. Mr. Chiranjeeb helped her in ramping up and also in Python programming. His teaching skills are good and certainly helped her in recent Cambridge exams.

I thank Mr. Chiranjeeb for his coaching & appreciate the help she received.

I would strongly recommend Mr. Chiranjeeb for IGCSE/Computer science subject.

Thanks

My daughter changed her boards from CBSE to Cambridge in her 11th, and took Computer Science as one of the subjects.
This sudden change of boards, some degree of complacency aided by poor teaching at school, amounted to very poor results in her AS Levels (11th) and a loss of confidence.
This was the time I went to Dada Chiranjeeb, who did his due diligence by assessing the situation and the student, chalked out a program in detail to take up AS and A levels within a year, and has executed it to precision.
Dada's contribution is immense and I am at a loss of words to express myself.
My daughter has regained her confidence having understood the core principles, and on course to pursue her future in Computer Science. Her results in school tests are amazing. A total turn around.
I have no hesitation in recommending Dada to anyone, who may be seeking to learn Computer Science.
I would sum up Dada Chiranjeeb in one word - "Super - TUTOR"

My daughter is in Grade9 in Bangalore and appeared for AP CS A exam this year. She knew the basics of Java/programming, but I wanted more in-depth and one-on-one tutoring for her. We approached 3 different tutors via teacheron.com and my daughter took a trial class with each of them. She liked Mr. Chiranjeeb’s trial class by far the most as he taught at “her wavelength”. In particular, he was the only tutor ready to accept/explore her (sometimes unusual) ways of solving the problem. We took several classes with him and that helped her both learn programming as well as prepare for the exam. I am a Software Engineer myself and could tell that Mr. Chiranjeeb is technically very strong and also has coding experience. My daughter found it very comfortable to work with him and he was very professional. He is very tech savvy, which is very important to students these days. We have highly recommended his services to a few of our friends and encourage you to get started with him as well.

I am a statistics grad student at Columbia University (USA) and Chiranjeeb has been my teacher for a while now and he is outstanding! He truly knows how to teach and explains even the hardest topics in a way that I can understand. We are mainly working on Modern Data Structures using Python programming language.

We are always very efficient when we study and I'm so happy that I found him.

I am a 2nd year student in Computer Science Engineering from Ohio State University, USA. Chiranjeeb RC has been a very good and friendly teacher. He is extremely disciplined and punctual with time. He will make sure that he made the student understand the topic being discussed. He is very knowledgable in subject area & the good part is he comes up with sudden questions on the topics covered to see where the student stands. 5 stars for him!

Chiranjeeb has been tutoring my son for more than two years. We live in California and he works late in the night to conduct his online tutoring. His specialty is computer science. My son is doing well in his computer programming classes with Chiranjeeb’s help. We are very happy with his expertise and plan to continue availing his services for more advanced programming classes.

My son is pursuing BS CS in USA and in his course Algorithm is the hardest and he wasn’t sure of scoring in the subject. Finding the right tutor for him there was a big challenge. Then we got to know of Mr ChiranjeebRC, and he agreed to take online classes on my son’s preferred time which was a great relief. Mr ChiranjeebRC held his hand and instilled confidence in him to face the challenges. He helped him thoroughly with the subject and made him confident of scoring in algorithm. Sometimes the motivation and the basic knowledge of the subject makes things easier and that’s what he did for my son. I am really grateful for all his help and guidance. He is a great teacher!

Mr. Chiranjeeb started tutoring my son who is preparing for his IGCSE computer science four months ago. He is an excellent tutor; most importantly has deep knowledge of the subject matter and committed to what he is doing. Among all the tutors we dealt with the last two years, Mr Chiranjeeb is the most effective and this is reflective on my son’s grades and his greater interest in computer science. We can’t ask for more, and we hope that Mr. Chiranjeeb will continue tutoring my son the next three years until year 13, when he will be siting for his A’level exams. If there is anything my son looks forwards to every Monday is his classes with Mr. Chiranjeeb. I recommend him highly.

I am a student from The UK and I was taught Computer science subjects by Mr. Chiranjeeb. Mr. Chiranjeeb is a fantastic teacher. He makes difficult concepts easy to understand and is always supportive and encouraging. Thanks to his guidance, I have become more confident in the subject. I'm grateful for such an incredible teacher who has tremendously supported and guided me.

I am thrilled to express my utmost satisfaction with Mr. Chiranjeeb Roy Chowdhury as a Java OOP and Data Structures Algorithms tutor for my daughter, who is currently pursuing her studies at a university in Switzerland. Chiranjeeb's exceptional support has been instrumental in filling the gaps left by university tutoring and strengthening her understanding of the subject.

While university tutoring provided a foundation, my daughter found that there were still certain concepts and intricacies that remained unclear. Recognizing the importance of bridging these gaps, we sought the assistance of Chiranjeeb, whose expertise has proven to be indispensable.

Chiranjeeb's comprehensive knowledge of Java OOP and his ability to explain complex topics in a straightforward manner have tremendously contributed to my daughter's learning experience. He effortlessly addresses the areas that were left unattended in her university coursework, ensuring a holistic understanding of the subject matter.

As a tutor, Chiranjeeb's reliability and professionalism are outstanding. He is always punctual, organized, and well-prepared for each session, allowing my daughter to make the most of their time together. His patience, approachability, and encouraging demeanor have created a positive and conducive learning environment, fostering my daughter's growth and progress.

I highly recommend Chiranjeeb as a Java OOP and Data Structures Algorithms tutor for university-level studies. His expertise, unwavering support, and dedication to his students' success make him an exceptional tutor. We are immensely grateful for his assistance in helping my daughter.

Mr. Chairanjeeb had been teaching my kid (sophomore, NJ, USA) for past 10 months. My kid was new to programming, especially in Java. There were certain fear, resistance, lack of confidence in her end, as jumping to AP Comp Science Application without prior programming knowledge is usually a bit difficult.
As a parent, I was also skeptical.
Discussed with Mr. Chiranjeeb over phone and he mentioned it was doable.
My kid is on her way to write the exam soon. And I expect her to do well because she seems to be comfortable with the curriculum. And more importantly, she is getting interest in the programming.
I thank Mr. Chairanjeeb for motivating her, helping her through the difficult period, answering her many questions.

Appreciate the help she received.

I would strongly recommend Mr. Chairanjeeb for Java Programming / AP classes .

Thanks

Mr. Roy is a wonderful teacher. My son has improved in Computer Science, Physics and Math, he is currently preparing my. son for his IGCSE. We are very satisfied and happy with the results. We will continue until the end of school year and also next year. My son likes him as a tutor and as a person. Mr. Roy is kind, takes the time required to teach and make sure he understands. Thank you Mr. Roy.

I am happy to share my experience with Mr. Chiranjeeb as a tutor for my son's Python and AP Computer Science Principles classes. As a parent from Canada, I was initially hesitant about the online tutoring format, but Mr. Chiranjeeb made the experience seamless and effective.

He is an excellent tutor who provided my son with a solid foundation in programming concepts and helped him to develop a passion for computer science. He is patient and encouraging with my son, and his teaching methods were tailored to my son's learning style. He is always available to answer questions and provide feedback, and he was highly organized in his lesson planning.

I would also like to mention that Mr. Chiranjeeb is well acquainted with the AP syllabus for Computer Science Principles. He was able to provide comprehensive guidance and support to my son in navigating the intricacies of the AP curriculum, ensuring that he is well-prepared for his exams.

Moreover, he is an extremely punctual tutor who always showed up on time for his sessions. He respected our time and schedule, and his professionalism was evident in every interaction we had with him. He was also very responsive to any questions or concerns we had and was always willing to go the extra mile to help my son succeed.

I highly recommend Mr. Chiranjeeb as a tutor for anyone seeking to learn Python or AP Computer Science Principles. His expertise, professionalism, and dedication are second to none, and we are truly grateful to have had the opportunity to work with him.

If you want an excellent teacher, who is very punctual, 100% professional and absolutely dedicated, then I recommend Chiranjeeb.
He has been tutoring my son who is home-schooling for his UK-GCSE Computer Science for 2+ years (Computer Science, Python, pseudocode, et cetera)
I seriously cannot fault him. He is structured, well prepared, very articulate and knows his subjects very well. I think the most important part for me, who is based in the UK and wanted a teacher who can teach GCSE was the bit where I could literally close my eyes and rely on him-always being there on time and teaching my son the way I prefer.
Thanks Chiranjeeb, It has been a pleasure, and we will come back to you for other subjects as well.

I'm Sneha, a student in Hong Kong studying AP/SAT. Recently, I signed up for the AP Computer Science A Exam with minimal prior knowledge and experience with computer science. This is when I came across Mr.Chiranjeeb Roy from TeacherOn, who really helped nourish my foundational skills and helped build on them by teaching core concepts in a way that made it very easy for me to comprehend. He has been guiding me in my journey to excel in the AP exam for the past year. Throughout this journey, I have seen massive growth in my knowledge of Computer Science and Java. Moreover, his teaching has boosted my passion for computer science and increased my curiosity to dive deeper into this field. Making my way into University, I am looking forward to continuing my learning with Mr.Chiranjeeb and would recommend him to anyone who wishes to enhance their understanding of computer science.

My daughter studies AP Computer Science Principles in the US. Mr. Chiranjeeb has been helping her with the lessons and the exam prep since the last few months. He is very knowledgeable in the subject and has helped my daughter understand foundational programming concepts quite well. He is always punctual and never misses a class. My daughter now has a good understanding of the subject and how to approach the AP exam. We have seen a great improvement in her performance in class. Mr. Chiranjeeb also knows how to keep the student engaged in the class by making it interactive and interesting. I would highly recommend him for anyone looking to learn any CS subject.

Roy is our 15-year-old's Computer Science teacher and has been teaching him for more than a year now. We are a family in Singapore and have been able to take advantage of Roy's classes in the online mode. Roys' teaching has been most effective and helpful. Through his passion for the subject and his interactive teaching style he has inspired our child to become very interested in the subject.

Roy is a highly responsible teacher and never misses a class. He is also very conscientious and always reminds the child about his homework, upcoming tests and exams, and gives him the best advice.

Thank you very much Roy for your wonderful teaching and we look forward to another year of success!

My son studies IGCSE in Singapore. Mr. Chiranjeeb has been tutoring him in Computer Science all through grade 10. My son says that he is a fantastic teacher. I could see a significant rise in my son's interest in the subject after Mr. Chiranjeeb began taking classes, and soon this was reflected in my son's grades as well.

Mr. Chiranjeeb is a very patient, diligent and dedicated teacher. He has excellent communication skills. Very punctual and never misses classes. He is also quite flexible with his timings. Whenever I needed to change the time for some unexpected reason, Mr. Chiranjeeb always managed to accommodate my son in some other time slot.

He is very well versed with the IGCSE syllabus. He takes time to clear my son's doubts. He focuses a lot on the programming section too. My son is quite satisfied with his teaching.

I would highly recommend Mr. Chiranjeeb to other students!

Hi, l am from India and l was very desperate to find a suitable teacher for my daughter for Std. X
Mr.Chiranjeeb consented to teach her Maths and Science, despite his major subject being Computers.
He has been so disciplined and understanding at the same time, that my daughter could shed her fear for these subjects. Maths and Science had been her stumbling blocks, though she is a sharp student, otherwise.
All thanks to Mr. Chiranjeeb, for his patience, comprehensive teaching style.
I will highly recommend him.

I am from Romania and I started learning Python with Mr. Chiranjeeb when I was in Grade 9 High School. He is an amazing teacher. Perfect communication skills. He knows Python very well and made me understand very quickly many topics which I could not understand from other online resources like Udemy, YouTube, etc. Mr. Chiranjeeb does not postpone or miss any lessons and is also extremely punctual! We did a lot of stuff in Python all the way up to making games with awesome animations! Then I learnt Java from him in Grade 11 and 12. I think he is the best Java teacher that I have ever seen. His knowledge in both Python and Java are excellent. The best thing is he teaches college courses too!! I am shifting to UK and I will start college next year in UK and I will definitely be studying with him. Thank you so much Mr. Chiranjeeb!

I‘m a Computer Science student at University in Germany. Our Java Data Structures and Algorithms assignments and exams are the same as the FAANG interviews. The teacher helped me understand such problems/ how to approach them /which technique to use on different topics (OOP, Recursion, DP, Backtracking etc.). The way he explains these topics is much better than any online resource. Last year he helped me solve some old exams in Digital Logic that enabled me to pass my current exam. He also showed deep understanding of DBMS.
For any CS subject I would first contact him.