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$30 USD / hour
Flag of TURKEY
ankara, turkey
$30 USD / hour
It's currently 2:01 AM here
Joined July 19, 2016
1 Recommendation

Sefa Kemal U.


5.0 (18 reviews)
$30 USD / hour
Flag of TURKEY
ankara, turkey
$30 USD / hour
Jobs Completed
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On Time
Repeat Hire Rate

Engineer,Software Developer

I am Nuclear Engineer and software developer for more than ten years. I have developed desktop apps with Vb.Net and MS SQL database in my first job. I have co-worked with senior software developers of Microsoft. I was a member of a team that has developed national vehicle registry software. I have hands-on experience in object-oriented programming, multi-threading, web services, relational database design. So I have pretty expertise in software development. On the other hand, for my academic study about nuclear engineering, I had developed various software by java and python. I have a golden badge in problem-solving at HackerRank.
Freelancer Software Architecture Developers Turkey

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Portfolio Items

HackerRank Profile-Golden Badge Problem Solving
HackerRank Profile
Expertise on development of desktop and database applications with Vb.Net, Python, Java,MS SQL, SQLite
Desktop and Database Application Development


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Showing 1 - 5 out of 18 reviews
Filter reviews by: 5.0
$237.00 CAD
He delivered on my project. Hopefully he will be available for more projects like this in the future for me.
.NET C# Programming Software Architecture WPF
Flag of Andrea B. @andbey
1 year ago
₹15,000.00 INR
I would recommend Sefa to everyone. He has been amazing and patient professional to work with. I had a great time working alongside him Thanks Sefa
Visual Basic .NET
Flag of Piya M. @Pics124
1 year ago
$50.00 USD
The project is not completed according to the dispute
.NET C# Programming Software Architecture C++ Programming WPF
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Flag of Tham K. @erictham2001
1 year ago
€20.00 EUR
Sefa is a great freelancer and programmer. Good communication, solved the problem quickly without fuss! It worked first time which is always nice!
Visual Basic .NET SQL
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Flag of Keith S. @keith100
1 year ago
₹25,200.00 INR
Top professional on Freelancer. Everything we wanted delivered perfectly 10/10
Software Development API Web API Computer Science Tutoring
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Flag of Alistair R. @alitam
2 years ago


Software Developer

General Directorate of Security
Oct 2006 - Dec 2009 (3 years, 2 months)
- Development of desktop apps with Vb.Net on MSSQL database - Development WPF applications - Development of C# application related with Win32 - Development of Python scripts and application - Multi layer and object oriented software development - Maintenance of ASP.NET software - Development of Web Services - Experience of working with senior software developers of Microsoft


Masters Degree of Nuclear Engineering

Hacettepe Üniversitesi, Turkey 2004 - 2008
(4 years)

Bachelor Degree of Nuclear Engineering

Hacettepe Üniversitesi, Turkey 1999 - 2004
(5 years)


In-laboratory development of an automatic track counting system for SSNTD

Radiation Physics and Chemistry, 2017 - Elsevier
In this study, an automatic track counting system was developed for solid state nuclear track detectors (SSNTD). Firstly the specifications of required hardware components were determined, and accordingly the CCD camera, microscope and stage motor table was supplied and integrated. The system was completed by developing parametric software with VB.Net language. Finally a set of test intended for radon activity concentration measurement was applied.

Radon and progeny sourced dose assessment of spa employees in balneological sites

Oxford Academic (Radiation Protection Dosimetry)
The ambient air of spa pools can contain serious RAC that depends on a lot of parameters. In this regard, RAC measurements were executed at the 70 spa facilities in Turkey. The measurements were done with both active and passive methods at ambient air of spa pools and dressing rooms. Thus, active measurements were carried out by using the Alphaguard® with diffusion mode during half an hour, and passive measurements were carried out by using the humidity resistive CR-39 radon detectors.

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Top Skills

Software Architecture 6 C# Programming 5 Python 4 Visual Basic 4 VB.NET 2

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