Dénes Bartha, Developer in Singapore, Singapore
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Dénes Bartha

Verified Expert  in Engineering

Machine Learning Developer

Location
Singapore, Singapore
Toptal Member Since
December 7, 2018

As a Ph.D. student of Computer Science, Dénes has worked as a researcher in Bioinformatics at The University of Tokyo and the National University of Singapore. He has also contributed as a Software Engineer at the Canadian Aviation Engineering (CAE). He greatly enjoys using machine learning techniques in order to solve real-world problems and to help businesses.

C++PythonBigQueryMachine LearningLinuxGitCPyCharmCLionRArtificial Intelligence (AI)AssemblySQLMySQLSage

Availability

Part-time

Preferred Environment

Sublime Text, Jupyter Notebook, PyCharm, Git, Ubuntu

The most amazing...

...tool that I have made is a DNA data compression/assembler program called Colorgram. It is a Succinct Colored de Bruijn Graph variant.

Work Experience

Researcher

2018 - 2019
National University of Singapore
  • Worked in the bioinformatics laboratory of the Computer Science Department.
  • Created design and implementation of concrete bioinformatical algorithms.
  • Analyzed DNA data, created statistics.
  • Worked on DNA compression and assembly related problems.
  • Created Colorgram - Succinct Colored de Bruijn Graph.
Technologies: Python, C++

Researcher

2016 - 2017
University of Tokyo
  • Worked in a bioinformatics laboratory.
  • Created theoretical algorithms related to bioinformatical problems.
  • Analyzed Mass Spectrometry data.
  • Implemented and tested algorithms.
  • Created and presented statistics.
Technologies: Python, C++

SOFTWARE ENGINEER

2014 - 2017
Canadian Aviation Electronics (CAE)
  • Supported the development of the pilot training system (UI, backend).
  • Maintained the components by analyzing the data and feedback of the customers.
  • Designed and developed the communication system of a specific military aircraft.
  • Collaborated (daily) between the Hungarian and Canadian sites.
Technologies: C#, Python, C++

Data Scientist

2014 - 2014
Nextent Informatics Co.
  • Supported the data collection from the customers.
  • Analyzed data using machine learning techniques.
  • Created statistics.
  • Supported creating the design of mobile application.
  • Participated in the developed mobile application for android.
Technologies: Android, Python, R

Software Developer

2011 - 2012
Key-Soft plc
  • Participated in the development of a billing software.
  • Designed and maintained databases using PL/SQL.
  • Developed components of the billing software product.
  • Supported the development of an online bookstore in PHP, SQL.
  • This was an internship program besides the university.
Technologies: PHP, PL/SQL, C++

Software Developer

2009 - 2009
Rise FM
  • Created interactive banners for the website of the company.
  • The main development was done in Flash (ActionScript), HTML, CSS, and PHP.
  • Collected reviews and feedbacks from the viewers of the website.
  • Maintained specific parts of the website based on the reviews.
  • This was a summer job besides high school.
Technologies: PHP, CSS, HTML, Flash, Flash ActionScript

Colorgram

https://github.com/denesbartha/Colorgram
While working at the National University of Singapore one of my projects was to create a much efficient representation of the Succinct Colored de Bruijn Graph data structure used for DNA assembly, compression, bubble calling and to detect variations between individuals of a population.

Tree Graph Labeling

https://github.com/denesbartha/tree-graph-labeling
For my Master's thesis, I needed to use an efficient tree labeling algorithm. Because at the time the currently available algorithms were mostly theoretical (without any libraries), I have decided that I give a concrete solution to the problem. First I implemented my algorithm in C++ and then I gave an alternative implementation in Python.

Reconstruction of Rooted Directed Trees

https://github.com/denesbartha/RRDT
While working on my Ph.D., I was mostly concentrating on problems of Statistical Bioinformatics. One particular problem was how to reconstruct tree graph structures from given frequencies of subgraph information. I gave a concrete algorithm for the rooted directed trees' problem and published my results in a paper.

Languages

Python, C++, C, R, Flash ActionScript, HTML, CSS, PHP, Assembly, SQL, Java, C#, Rust

Tools

BigQuery, Git, PyCharm, CLion, Sublime Text 3, Sublime Text, Flash, Maple, MATLAB, Tableau

Libraries/APIs

Scikit-learn, NumPy, Sage, Keras, TensorFlow

Platforms

Linux, Ubuntu, Android, Jupyter Notebook

Other

Machine Learning, Artificial Intelligence (AI)

Frameworks

Boost, Django, Android SDK

Paradigms

Scrum

Storage

PL/SQL, MySQL

2014 - 2019

Ph.D. in Computer Science

Eötvös Loránd University - Hungary

2012 - 2014

Master's Degree in Computer Science

Eötvös Loránd University - Hungary

2009 - 2012

Bachelor's Degree in Computer Science

Eötvös Loránd University - Hungary

MAY 2017 - PRESENT

Associate Android Developer

Google

DECEMBER 2015 - PRESENT

Foundation Certificate in Software Testing

ISTQB

JUNE 2012 - PRESENT

Software Information Technologist

Eötvös Loránd University