CV: Senior Telecommunications Test Engineer



Personal information
Contact information
Candidate Profile
 Date Submitted:02-07-2019
 Last Modified:03-07-2019 (06:58)
Job information
 Current job:Senior Telecommunications Test Engineer
 Employment Term:Permanent
 Job location:Own country
 Date available:within 3months
 Industry:Satellite Operators, , , Consulting/Engineering Services
 KeywordsPhysics, Astronomy, Dynamics, Programming, Scripting, Perl, C++, Linux, Software testing, Requirements, Test organization, Test execution, Documentation,

Personal Data


Date of birth: 12.04.1977

Nationality: Greek




Senior Telecommunications Engineer with a demonstrated history of working in the wireless industry.

Skilled in LTE, IMS, Telecommunications Standards, Carrier-requirements, Physics and Computing.

Strong managing skills in defining test plans, test procedures, organizing test sessions on multiple countries and managing a team of 3-5 engineers. Strong communication skills.

Strong engineering professional with a Doctor of Philosophy (Ph.D.) focused in Astronomy and Astrophysics from Department of Physics, Aristotle University of Thessaloniki, Greece.


Professional Experience

Feb. 2015 - Senior Telecommunications Engineer, Qualcomm CDMA Technologies GmbH,

Am Limespark 2, Sulzbach, Germany.

In my current role at Qualcomm CDMA Technologies I am leading the Field Test Team responsible for carrier-specific settings for IMS-related services (VoLTE, VoWiFi, Ut/XCAP).

My position involves:

Planning of mobile phone tests on multiple European networks,

Defining the test-cases and constructing the test plan and test approach,

Getting and studying carrier-specific requirements,

Analyzing of test results and reporting issues (Wireshark, QXDM, APEX, JIRA),

Writing reports to internal and external teams,

Interacting with the Network carriers for resolving issues on both sides (Network and phone),

Studying telecommunication standards (3GPP, GSMA IR.92, IR.51, IR.94),

Managing a dynamic team of 3-5 persons which is responsible for the above activities.


In my current role I have made the following contributions:

Increased the in-market testing by 50%.

Reduced the team effort by 30% by automating the test procedures (Perl, TestRail).

Increased efficiency in reporting by automating and standardizing the process.

Decreased the number of issues reported by customers in European Networks by 50%.

Contributed significantly to the company share increase in EU market.

Significantly improve the connections of the company with European Carriers.

Top issue-reporter of the EU Field Test team.


June 2013 − Feb. 2015 Test Engineer, Qualcomm CDMA Technologies GmbH,

Am Limespark 2, Sulzbach, Germany.

In my position at Qualcomm CDMA Technologies I worked as a Telecommunications Test Engineer. My

main activities involved testing modem behavior in terms of LTE, UMTS, IMS on multiple European

Networks, identifying and reporting problems and assisting in their resolution.


Oct. 2012 − Jan. 2013: Postdoctoral position, Departamento de Astronomıa y Astrofısica,

Pontificia Universidad Catolica de Chile, Santiago, Chile.

Extending Myriad and writing Perl supporting scripts.

Programming in C/C++, using STL and C++ Classes.

Development of CPUGPUMonitor, a Perl program for monitoring supercomputers.


June. 2011 − Mar. 2012: Postdoctoral position, Astronomisches Rechen-Institut (ARI),

Centre for Astronomy of Heidelberg University (ZAH), Germany.

Extending Myriad and writing Perl supporting scripts.

Programming in C/C++, using symplectic algorithms and C++ pointers.

Development of SimulationMonitor, a Perl program for monitoring simulations.


Jan. 2011 − June 2011: German Academic Exchange Service (DAAD) Scholarship,

Albert Einstein Institute, Golm, Germany.

Extending Myriad and writing Perl supporting scripts.

Programming in C/C++, using symplectic algorithms.

Development of ArxivSelector, a Perl program for accessing websites.


Aug. 2010 − Dec. 2010: Researcher, Theoretical Astrophysics Department (TAT),

Jan. 2008 − Feb. 2009: Eberhard Karls University of Tubingen, Germany.

Development of Myriad, a C/C++ code for astrophysical simulations.

Programming in C/C++, using complex algorithms and C++ classes.

Programming in Perl for assisting simulations.


May 2006 − May 2007: CGI-Perl programmer, Aristotle University of Thessaloniki, Greece.

Writing CGI-Perl programs for an Interactive Numerical Analysis course.


Academic Education

Dec. 2004 − Sept. 2011: Ph. D. in Astrophysics, Aristotle University of Thessaloniki, Greece.

(Obtained) Dissertation Title: “Gravitational Radiation from stellar systems”.

(Grade: Excellent) Development of Myriad, a C/C++ code for simulations of star clusters. Myriad has been developed from scratch and consists of ∼20 000 lines of code and ∼100 functions. It uses advanced computational techniques and algorithms, it includes all of the required physics, and can be used for performing realistic astrophysical simulations on large supercomputers. The code uses the STL library, C++ classes, constructors and pointers, it is accelerated by using the GPUs for the most demanding calculations and is written in a highly modular way. A front-end Perl script is responsible for starting the code on large supercomputers.


4 publications in Astrophysics Journals.

Deep knowledge of C/C++, Perl and of advanced computational methods and algorithms: (Hermite 4th order algorithm, time-symmetric Hermite scheme, symplectic algorithms, etc.)

Experience in CUDA and parallel programming.

Broad knowledge of the Linux operating system.


Sept. 2001 − Aug.2004: M. Sc. in Astronomy and Astrophysics, Penn State University, USA.


Working with advanced mathematical problems.

Thesis title: “R-modes of Neutron Stars”.

A C-code that solves a set of complicated partial differential equations for studying oscillations of

Neutron Stars.


Extended knowledge of C/C++ and of Numerical Analysis methods and algorithms.

Knowledge of Mathematica, Maple and Matlab.

Experience in dealing and solving complex mathematical problems.


Sept. 1995 − Dec. 2001: Diploma Degree (Ptychio) in Physics, Aristotle University of Thessaloniki, Greece.

(Obtained) Courses on Mathematics, Physics, Software programming and Numerical analysis.

(Grade: 8.3/10) Thesis title: “Dipole modes in Neutron stars”.

A C-code that solves a set of ordinary differential equations.


Deep knowledge of Mathematics and Physics.

Introduction to Numerical Analysis methods.


Language and summary of Skills

Language: Greek: native.

English: fluent.

German: beginner (B1 Level).


Skills: Software Testing, Data Analysis (TCP/IP, UDP and lower layers), 3GPP standards, GSMA standards, Carrier-requirements,

Team management (3-5 persons), Reporting, Issue resolution, Communication, Test case planning.

Broad knowledge of C++, Perl, CGI-Perl, HTML, Unix Shell scripting.

Extensive experience in using packet analyzer tool Wireshark and internal company-developed software (QXDM, APEX).

Broad knowledge of Linux operating system.

Expendable knowledge of PHP, MySQL, CUDA, OpenCL, Python, CygWin.

Experience in scientific programs: Matlab, Maple, Mathematica.

Experience in working with Test-case management tools: Testrail.

Broad Knowledge of Windows and MS Office tools.



Oct. 2012: FONDECYT postdoctoral fellowship, Departamento de Astronomıa y Astrofısica, Pontificia Universidad Catolica de Chile, Santiago, Chile.

Jan. 2011: Scholarship of the German Academic Exchange Service (DAAD).

Sept.2001: Braddock Fellowship, Department of Astronomy and Astrophysics, Penn State University, USA.

Sept. 2001: Scholarship from the Hellenic Scholarship Foundation (IKY), Greece.


List of Publications

1. ”MYRIAD: a new N-body code for simulations of star clusters”,

Konstantinidis, S. and Kokkotas, K. D., Astronomy and Astrophysics, Volume 522, id.A70, 2010.

2. ”Sowing the Seeds of Massive Black Holes in Small Galaxies: Young Clusters as the Building Blocks”, Amaro-Seoane, P., Konstantinidis, S., Freitag, M., Miller, C., Ratio, F

The Astrophysical Journal, Volume 782, Issue 2, article id. 97, 14 pp. (2014).

3.”Investigating the retention of intermediate-mass black holes in star clusters using N-body simulations”

Konstantinidis, Symeon, Amaro-Seoane, Pau and Kokkotas, Kostas D. Astronomy and Astrophysics, Volume 557, id.A135, 2013.

4. ”Mergers of multi-metallic globular clusters: The role of dynamics”,

Amaro-Seoane, P., Konstantinidis, S. Monthly Notices of the Royal Astronomical Society, Volume 435, Issue 1, 11 October 2013.


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