Duc Duy Bui
Mentor
(452 reviews)
US$27.00
For every 15 mins
770
Sessions/Jobs
ABOUT ME
Senior Software Developer / Freelancer
Senior Software Developer / Freelancer
Freelancer, Professional with over 13 years of experience specializing in developing solutions for finance and insurance companies. My strength is learning new technologies fast and I'm a technology enthusiast.
Central Time (US & Canada) (-05:00)
Joined May 2021
EXPERTISE
13 years experience | 2 endorsements
Code, implement, test, maintain and troubleshoot bank core system.
Code, implement, test, maintain and troubleshoot bank core system.
11 years experience | 81 endorsements
Maintaining/developing software (lead / schedule / call- center management) for insurance industry
Maintaining/developing software (lead / schedule / call- center management) for insurance industry
13 years experience | 37 endorsements
Overall design, details design the whole Python project as team leader in Python.
Overall design, details design the whole Python project as team leader in Python.
10 years experience | 144 endorsements
Freelancer in C/C++ in Linux, MacOS or Windows system.
Use vi editor, Visual studio .NET.
Freelancer in C/C++ in Linux, MacOS or Windows system.
Use vi editor, Visual studio .NET.
REVIEWS FROM CLIENTS
(452 reviews)
Sebastian Rizzo
April 2025
He is a great teacher and he is very clear! Thank you very much. Now, I've got to practice myself for assimilating the knowledge que taught to me. I fully reccomend him!
Diego Alvarez
April 2025
Awesome at explaining C++
Khris Saint Louis
April 2025
Highly skilled and explains in detail each situation and scenario.
Max R.
March 2025
The mentor explained the essence in detail and in an accessible way and pointed out the mistakes that needed to be resolved in order to solve the problem. He answered my technical questions.
Khris Saint Louis
March 2025
Explained thoroughly on how to do problems and solve tasks
Khris Saint Louis
February 2025
Very Skilled and informative, goes along and teach you the process
Khris Saint Louis
February 2025
Very detailed and explains each step of the solution
Khris Saint Louis
February 2025
Professional level of coding while explaining each step
Erika Onyango
December 2024
I'm very appreciative of his clear explanations as he walks me through his rationale.
Erika Onyango
November 2024
He was really great. I was able to complete the code in the time and he helped me all the way through! He explained as he went.
SOCIAL PRESENCE
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EMPLOYMENTS
Freelance
Upwork
2019-07-01-2021-05-01
Work to help other developers on investigating code, code review, fixing bug, develop and improve performance.
Good Communication
Work to help other developers on investigating code, code review, fixing bug, develop and improve performance.
Good Communication
PHP
Python
Java
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PHP
Python
Java
C#
C++
C
Debugging
Front-End
Web Development
Back-End
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Database Administrator/Developer
Lien Viet Post Bank (
2012-07-01-2019-05-01
Maintaining corebanking system (Oracle Flexcube),
developing core functions based on business requirements
ESB Integration development (f...
Maintaining corebanking system (Oracle Flexcube),
developing core functions based on business requirements
ESB Integration development (for integrating with other systems such as: internet banking, card/ATM, eWallet,...)
C#
C
SQL
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C#
C
SQL
Linux
Oracle
Oracle PL/SQL
Linux System Administration
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Developer/Project Manager
Elisoft J.S.C
2004-09-01-2007-07-01
Maintaining/developing software (lead / schedule / call- center management) for insurance industry
Small outsource company for American i...
Maintaining/developing software (lead / schedule / call- center management) for insurance industry
Small outsource company for American insurance companies (PMIC, Metlife,...)
C#
Back-End
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C#
Back-End
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PROJECTS
Corebanking upgrading project
Lien Viet Post Bank
2015
Upgrading Oracle Flexcube from version 7.2 to version 12.2
Building a set of ESB services in IBM IIB 10 for integrating external systems ...
Upgrading Oracle Flexcube from version 7.2 to version 12.2
Building a set of ESB services in IBM IIB 10 for integrating external systems to Oracle Flexcube
C#
Oracle
Oracle PL/SQL
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C#
Oracle
Oracle PL/SQL
Asp.net core c#
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EDI solution for Myanmar MITT Port
Myanmar MITT
2016
Consulting and building EDI solution in Microsoft Biztalk Server for them to communicate with transport shipping lines (Maersk, OOCL, RCL...
Consulting and building EDI solution in Microsoft Biztalk Server for them to communicate with transport shipping lines (Maersk, OOCL, RCL, ACL, ONE,...)
C++
C
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C++
C
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