This document is a resume for Andrii Sofiienko, a research scientist with over 10 years of experience in research and development, scientific programming, and physics. It summarizes his work history in scientific roles focused on x-ray imaging, spectroscopy, modeling of radiation detectors, and more. It also lists his education including a PhD in solid-state physics and qualifications as an experimental nuclear physicist and expert in radiation measurement systems.

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Andrii Sofiienko. PhD, Research Scientist. asofienko@gmail.com
Andrii SofiienkoPhD, Research Scientist
Over ten years’ experience in R&D and scientific programming
E-mail: asofienko@gmail.com
Website: https://www.linkedin.com/in/andriisofiienko
Phone : +47 466 36 737
Address: 4006 Stavanger, Norway
Birthday: 16.09.1983
Objective
Seeking a position as a Scientist, Researcher, Physicist, Software Engineer, Radiation Specialist or similar
where I can utilize my education and experience towards becoming a valuable team member.
I have extensive knowledge and experience in Statistics, designing and modeling of radiation detectors, X-ray imaging and
scanning, NDT, dosimetry, spectroscopy, radiation and nuclear physics, solid-state physics, nuclear electronics, measurement
systems, LabVIEW, mathematical modeling, scientific programming and data analysis (vb.NET, C#, Matlab, MathCad).
Work experience
Visuray AS, Randaberg
Senior Physicist
April 2015 – September 2015
 X-ray imaging and 3D scanning, X-ray spectroscopy (chemical and industrial X-ray / gamma sources);
 Oil-well inspection and cement evaluation;
 Planning and conducting of the experimental and theoretical research, lab prototyping (LabVIEW);
 Analytical modeling of the bremsstrahlung spectra;
 Analytical modeling of the phenomena relating to X-ray interaction with matter;
 Scientific programming (simulation of X-ray spectra, 3D rendering of scanning results: vb.NET, C#, MathCad);
 Automation of 3D scanning process using communication VB code and high precision motors;
 Designing of a shielding for X-ray and gamma radiation and dose rate estimation;
 Mathematical modeling of the ionization effects in the coolants irradiated by X-ray radiation.
University of Bergen / Visuray AS
PhD Candidate
April 2012 - April 2015
The title of PhD thesis is "Radial X-ray backscatter imaging for well integrity inspections". The main topics of the
research are:
 Planning and conducting experiments to measure the X-ray backscatter response of a variety of media
commonly found in the material construction of oil and gas wells;
 Computational simulation of X-ray backscattering within borehole walls;
 Development of theoretical algorithms for data processing and 3D-imaging during measurement of X-ray
backscatter radiation inside of an oil or gas well;
 Development of analytical algorithms for the density reconstruction using measured X-ray radial images of
composite dense objects, 2D and 3D rendering of the scanning results;
 Design an instrument (in collaboration with Visuray AS) that generates 3D X-ray image inside of oil-wells;
 Scientific programming (.NET) and processing of raw data measured by X-ray imaging detectors;
 Analytical modeling of the response function of the solid-state radiation detectors of X-rays;
 Spectrometric testing of the high-temperature ZnSe microstrip X-ray detectors.

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Andrii Sofiienko. PhD, Research Scientist. asofienko@gmail.com
Ukratominstruments Corporation,
Kyiv, Ukraine
Physicist, since 2009 - Head of
research laboratory
June 2005 - March 2012
 Planning and management of the R&D projects;
 Modeling, designing, testing and calibration of novel X-ray and gamma-ray detectors;
 Designing of the shielding for gamma-ray and neutron sources;
 Development of the operating algorithms for the devices of radiation control;
 Scientific programming (.NET) and modeling of physical processes in radiation detectors;
 Mathematical and methodological support of the intelligent detectors of ionizing radiation (technical
specifications, algorithms, calibration methods, verification procedures);
 Designing of mobile applications for the remote control of the measurement devices via Bluetooth;
Institute of analytical methods of
control, Kyiv, Ukraine
Assistant
October 2003 - August 2004
 Development of the scientific software using MS Visual Studio 6.0/7.0;
 Analytical modeling of physical processes in semiconductor pin detectors (charge trapping, charge transport
and charge collection efficiency at the detection of X-rays);
 Analytical modeling of the response functions of the solid-state detectors of X-rays;
Qualifications
 Certified Experimental Nuclear Physicist
 Certified Specialist in X-ray Backscatter Scanning and Imaging
 Certified Solid-State Physicist
 Certified Expert in the Radon Measurement Systems and Radon Dosimetry
 Experienced .NET Programmer
Patents
X-Ray Backscatter Imaging of an Object Embedded in a Highly Scattering Medium
United States US 20140254764 A1
Inventors: Kambiz Safinya, Houston, TX (US); Ådne Voll, Stavanger (NO); Andrii Sofiienko, Randaberg (NO); David
Ponce, Randaberg (NO); Melissa Spannuth, Stavanger (NO); Henning Torsteinsen, Stavanger (NO)
Methods and Means for Creating Three-Dimensional Borehole Image Data
United States US 20150177409 A1
Inventors: Andrii Sofiienko, Randaberg (NO); David Ponce, Randaberg (NO); Ådne Voll, Stavanger (NO); Philip
Teague, Houston (TX).

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Andrii Sofiienko. PhD, Research Scientist. asofienko@gmail.com
Education
University of Bergen
PHYS327 Laboratory Course in
Instrumentation and Process
Control
January 2014 - February 2014
 Data acquisition, analysis and control using standard measurement instruments and process instrumentation;
 Design data acquisition LabVIEW VIs using IEEE488 (GPIB) interface, VISA and DAQmx;
 Calculation, visualization and simulation of dynamic models in LabVIEW;
 Make a LabVIEW VI to determine the characteristics of the gas injection valves;
 Perform simulation of a closed loop PI/PID control systems;
Société “ALGADE”, France
Mise en place d'un système de
dosimetry dans les Mines
d'Uranium Ukrainiennes
April 2010
Obtained the certificate in Radon Measurements Technique (alpha-dosimetry).
National Taras Shevchenko
University of Kyiv
PhD Candidate
September 2005 - December 2010
Obtained the PhD degree in Solid-State Physics. The title of the thesis is "Kinetics of X-ray-induced conductivity of
Zinc Selenide". The list of main courses and practical trainings:
 Semiconductors;
 Solid-state physics;
 Optical spectroscopy methods;
 Light sensors: PMT, semiconductor photodetectors;
 Vacuum physics;
 Highly sensitive electronics and sensors;
National Taras Shevchenko
University of Kyiv
Student (Master program)
September 2004 - June 2005
Obtained the Master degree in Nuclear and Elementary Particle Physics. The list of main courses:
 Nuclear astrophysics;
 Modern elementary particle physics;
 Modeling of the transmission of charged particles through matter;
 Foundation of management and marketing;
 Modern directions in nuclear power engineering;
 Accelerators;

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Andrii Sofiienko. PhD, Research Scientist. asofienko@gmail.com
National Taras Shevchenko
University of Kyiv
Student (Bachelor program)
September 2000 - June 2004
Obtained the Bachelor degree in Physics. The list of main courses:
 Quantum mechanics;
 Programming and mathematical modeling;
 Molecular physics;
 Optics;
 Electrodynamics;
 Nuclear and particle physics;
 Atomic physics;
 Electricity and magnetics;
 Nuclear theory;
 Automation of the experiments in nuclear physics;
 Methods of registration of ionizing radiation;
 Theory of nuclear reactions;
 Elementary particle physics and neutron physics;
 High-energy physics;
 Radiation protection;
 Nuclear spectroscopy;
 Accelerators;
Skills
 Management of R&D projects from concept to completion;
 3D X-ray scanning technologies and X-ray imaging;
 Optical spectroscopy of the excited semiconductors (soft X-rays and UV excitation);
 Development and modeling of the detectors of ionizing radiations (α / β / γ / n / UV);
 Data processing and scientific programming;
 Mathematical modeling of physical phenomena (solid-state physics, radiation physics, electrodynamics);
 LabVIEW 2013 (data acquisition, programming, simulation);
 Microsoft Office, MathType, Microsoft Visio, Microsoft Project, WizFlow Pro 6.0;
 Visual Studio (vb.NET, C#), MathCAD 15, Matlab, SMath Studio, Origin Pro 7.x/8.x;
 MC simulation software GamBet;
 Proteus Pro.7, Multisim 11, Electronic Work Bench 5, sPlan 6, MicroCap 9, CircuitMaker;
Languages
English: full professional proficiency
Norwegian: basic proficiency
German: basic proficiency
Ukrainian: native or bilingual proficiency
Russian: native or bilingual proficiency

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Andrii Sofiienko. PhD, Research Scientist. asofienko@gmail.com
References
Dr. David M. Ponce
PhD, Lead Physicist at Visuray AS, Randaberg, Norway
Email: david.ponce@visuray.com
Phone: +47 928 25 144
Prof. Geir Anton Johansen
Prof., PhD, Dean of Faculty of Engineering and Business Administration,
Bergen University College, Norway
Email: Geir.Anton.Johansen@hib.no
Phone: +47 911 43 615
Dr. Marie Bueie Holstad
PhD, Department Manager at Christian Michelsen Research, Norway
Email: marie.holstad@cmr.no
Phone: +47 920 54 529
Interests
Music, reading, X-ray physics, mathematics, semiconductor detectors, astronomy, scientific programming.
Selected publications
1. Degoda V.Ya., Pavlova N.Yu., Podust G.P., Sofiienko A.O., Spectral structure of the X-ray stimulated
phosphorescence of ZnSe monocrystals, Physica B: Condensed Matter 465, 2015, 1-6.
2. Sofiienko A.O., Jarvis C., Voll Å., Monte Carlo simulations of scanning system based on panoramic X-ray tube
with a conical anode, Physics Research International, 2014, 2014, 1-9.
3. Brodin M.S., Degoda V.Ya., Sofiienko A.O., et al, Monocrystalline ZnSe as an ionising radiation detector
operated over a wide temperature range, Radiation Measurements, 65, 2014, 36-44.
4. Degoda V.Ya., Sofiienko A.O. Effect of traps on the current impulse from X-ray induced conductivity in wide-
gap semiconductors, Physica B: Condensed Matter, 426, 2013, 24-30.
5. Sofiienko A.О., Degoda V.Ya., X-ray induced conductivity of ZnSe sensors at high temperatures, Radiation
Measurements, 47, 2012, 27-29.
6. Degoda V. Ya., Sofiienko A.O., Kinetics of charge transport in wide-band semiconductors at the detection of
X-Ray radiation, Acta physica polonica A 117 (1), 2010, 333-338.

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LIST OF PUBLICATIONS
Andrii Sofiienko, Ph.D.
asofienko@gmail.com
I. Peer reviewed journal articles:
1. Degoda V.Ya., Pavlova N.Yu., Podust G.P., Sofiienko A.O., Spectral structure of the X-ray
stimulated phosphorescence of ZnSe monocrystals, Physica B: Physics of Condensed Matter
465, 2015, p. 1-6.
2. Brodin M.S., Degoda V.Ya., Sofiienko A.O., et al, Monocrystalline ZnSe as an ionising
radiation detector operated over a wide temperature range, Rad. Meas. 65, 2014, 36-44.
3. Sofiienko A.O., Jarvis C., Voll Å., Monte Carlo simulations of scanning system based on
panoramic X-ray tube with a conical anode, Physics Research International 2014, 2014, 1-9
(open access article).
4. Degoda V.Ya., Sofiienko A.O., Effect of traps on the current impulse from X-ray induced
conductivity in wide-gap semiconductors, Physica B: Condensed Matter 426, 2013, 24-30.
5. Sofiienko A.О., Degoda V.Ya., X-ray induced conductivity of ZnSe sensors at high
temperatures, Rad. Meas. 47, 2012, 27-29.
6. M.S. Brodyn, V.Ya. Degoda, B.V., Kozhushko, A.O. Sofiienko High-temperature X-ray
conductivity of extra pure ZnSe crystals, Sensor Electronics and Microsystems Technologies 2
(8), № 4, 2011, 25-31.
7. Degoda V.Ya., Sofiienko A.O., Kinetics of Charge Transport in Wide-Band Semiconductors at
the Detection of X-Ray Radiation, Acta physica polonica A 117 (1), 2010, 333-338 (open access
article).
8. Degoda V.Ya., Sofiienko A.О., Specific Features of the Luminescence and Conductivity of Zinc
Selenide on Exposure to X-Ray and Optical Excitation, Semiconductors 44 (5), 2010, 1-7.
9. Degoda V.Ya., Sofiienko A.O., Basic kinetic model for X-ray conductivity in wide-gap
semiconductors, Ukr. J. Phys 55 (2), 2010, 200-206 (open access article).
10. Degoda V.Ya., Sofiienko A.О., Spatial generation of electron excitations on the X-ray
absorption, Ukr. J. Phys. 52 (3), 2007, 256-263 (open access article).

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II. Non peer reviewed journal articles:
1. Sofiienko A.O., Kur’yanov V.I., Development of new generation detectors of absorbed gamma
radiation dose for the use in conditions of NPP’ maximum design accident, Bulletin of Sevastopol
National University of Nuclear Energy and Industry 42 (2), 2012, 71-77 (in Ukrainian).
2. Sofiienko A.О., Degoda V.Ya., Kilin V.N., Basic Model of the Stationary X-ray Induced
Conductivity of Wide-Gap Semiconductors, Global Journal of Science Frontier Research (A) 12
(3), 2012, 9-11 (open access article).
3. Sofiienko A.O., Degoda V.Ya., Effect of shallow traps on the current pulse of semiconductor
detector under the absorption of X-ray photon, Bulletin of University of Kyiv: Phys. & Math. 2-3,
2011, 45-49 (in Ukrainian).
4. Degoda V. Ya., Sofiienko A.O., Influence of electric-field on luminescence of ZnSe, Bulletin of
University of Kyiv: Phys. & Math 1, 2009, 233-238 (in Ukrainian).
5. Degoda V.Ya., Sofiienko A.O., Phosphorescence and relaxation of conductivity in ZnSe after
photo- and X-ray excitation, Bulletin of University of Kyiv: Phys. & Math 3, 2008, 232-240 (in
Ukrainian).
6. Degoda V.Ya., Sofiienko A.O., Effect of excitation type on the luminescence and conductivity of
ZnSe, Bulletin of University of Kyiv: Phys. & Math 8, 2006, 52-55 (in Ukrainian).
III.Conference papers and proceedings:
1. Sofiienko A.O., Jarvis C., Voll Å., Monte Carlo simulations of production of collimated
panoramic X-rays using a conical anode-type X-ray tube, Proceedings of 5th
Conference on
Industrial Computed Tomography (ICT-2014), Wels (Austria), Feb. 2014 (open access article).
2. Sofiienko A.O., Jarvis C., Voll Å., Electron range evaluation and X-ray conversion optimization
in tungsten transmission-type targets with the aid of wide electron beam Monte Carlo simulations,
Proceedings of 11th
European Conference on Non-Destructive Testing, Prague (Czech Republic),
Oct. 2014 (open access article).
3. Sofiienko A.O., Degoda V.Ya., David M. Ponce, Johansen G.A., Evaluation of monocrystalline
ZnSe as a high-temperature radiation detector, Proceedings of 11th
European Conference on Non-
Destructive Testing, Prague (Czech Republic), Oct. 2014 (open access article).
4. Degoda V.Ya., Podust G.P., Sofiienko A.O. and Vesna G.V., Lux-Ampere Dependencies of the
Intensity X-Ray Luminescence and X-Ray Conductivity in ZnSe Single Crystals, International
Scientific conference “Oxide Materials for Electronic Engineering – fabrication, properties and
application” OMEE-2012, Lviv (Ukraine), 2012, p.21.

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5. Sofiienko A.O., Degoda V.Ya., Average Statistical Distribution of Electronic Excitation under
Thermalization of High-Energy Electron in Semiconductor Detectors, Proceedings of “Nuclear
Science Symposium and Medical Imaging Conference”, Valencia (Spain), 2011.
6. Sofiienko A.O., Degoda V.Ya., Development of Temperature Stable X-Ray Detectors and
Gamma-Radiation Detectors Based on Wide-Gap Semiconductor ZnSe, Proceedings of Scientific
Workshop “Room-Temperature Semiconductor X-Ray And Gamma-Ray Detectors”, Valencia
(Spain), 2011.
7. Sofiienko A.O., Kur’yanov V.I., Development of new generation of the detectors of the absorbed
dose of gamma-radiation for the use in conditions of maximum design accident in nuclear power
plants, Abstracts of International Scientific Conference “International Scientific-Practical
Conference on the Problems of Atomic Energetics, Sevastopol (Ukraine), 2011.
8. Degoda V.Ya., Sofiienko A.O., Phosphorescence and relaxation of conductivity in ZnSe after
photo- and X-ray excitation, Abstracts of International Scientific Workshop “Oxide Materials for
Electronic Engineering – fabrication, properties and application”, Lviv (Ukraine), 2009, p.150.
9. Degoda V.Ya., Sofiienko A.O., Influence of electric field on luminescence of ZnSe, Abstracts of
International Scientific Workshop “Oxide Materials for Electronic Engineering – fabrication,
properties and application”, Lviv (Ukraine), 2009, p.150.
10. Sofiienko A.O., Bohanov K.K., Features of current relaxation and phosphorescence of zinc
selenide under X-ray excitation, Conference of young scientists on semiconductor physics
”Lashkaryov’s readings”, Kyiv (Ukraine), 2008, p.122.
11. Degoda V.Ya., Sofiienko A.O., Shilov D., Generation of electronic excitations under
thermalization of high-energy electron in liquid phosphors, Abstracts of the Conference “Physics
of Liquid Matter: Modern Problems”, Kyiv (Ukraine), 2008.
12. Sofiienko A.O., Degoda V.Ya., Kyiak B.R., Vesna G.V., X-ray luminescence and X-ray
conductivity of ZnSe semiconductor, Abstracts of III International Conference on Hydrogen
Bonding and Molecular Interactions, Kyiv (Ukraine), 15–21 May 2006, p. 162.
13. Degoda V.Ya., Sofiienko A.О., Basic kinetic model of X-ray conductivity and current impulse in
ideal wide-gap semiconductor, Abstracts of 6-th European Conference on Luminescent Detectors
and Transformers of Ionizing Radiation, Lviv (Ukraine), 2006, p.99.
14. Sofiienko A.О., Degoda V.Ya. Generation of electronic excitations under thermalization of high-
energy electron in a material, Abstracts of 6-th European Conference on Luminescent Detectors
and Transformers of Ionizing Radiation, Lviv (Ukraine), 2006, p.138.
15. Sofiienko A.O., Degoda V.Ya., Kyiak B.R., Vesna G.V. X-ray luminescence and conductivity of
mono- and polycrystalline sample of ZnSe, Abstracts of 6-th European Conference on
Luminescent Detectors and Transformers of Ionizing Radiation, Lviv (Ukraine), 2006, p.162.