Tomasz Sikora, Developer in Mexico City, Mexico
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Tomasz Sikora

Verified Expert  in Engineering

Software Developer

Location
Mexico City, Mexico
Toptal Member Since
December 2, 2015

Tomasz is a software developer with a broad range of professional experience and a background in computational physics and science. He is proficient in Java, native Android app development, numerical simulations, and data analysis. Tomasz is always interested in learning state-of-the-art technologies and has a passion for algorithms, data structures, and the functional programming paradigm (Haskell and Clojure).

JavaAndroidKotlinSoftware DevelopmentWeb ScrapingData ScrapingBack-endSQLitePythonSQLOpenGL ESJavaScriptIntegrationFull-stackGitIDLABBYY

Portfolio

HelloFresh
Kotlin, Android, Software Development
Ingenius
Java, Android, JavaScript, ABBYY, SQL, Android Camera App, Kotlin, SQLite...
MBC Ingeniería
OpenGL ES, Android, Java, SQLite, Software Development

Experience

Android - 10 yearsJava - 10 yearsKotlin - 5 yearsGit - 2 yearsHaskell - 1 yearJira - 1 yearFunctional Programming - 1 yearClojure - 1 year

Availability

Full-time

Preferred Environment

Eclipse, Android Studio, Android, Linux

The most amazing...

...thing I've developed is a 3D visualization of real-time data using OpenGL for embedded systems.

Work Experience

Android Developer

2021 - 2021
HelloFresh
  • Investigated social media sharing within a mobile app.
  • Tracked and fixed bugs using Jira as a reporting tool.
  • Refactored and cleaned up legacy code in order to facilitate architecture change.
  • Developed features and wrote unit tests for user A/B testing.
Technologies: Kotlin, Android, Software Development

Android Developer

2016 - 2017
Ingenius
  • Built an app prototype to take photos of retail store receipts, image digitization, integration with ABBYY API and SDK for OCR (optical character recognition).
  • Built an Android app named Lettuz. The mobile application analyzes users' grocery purchases (via 3rd party API) and recommends healthier alternatives.
  • Introduced the Kotlin programming language into the project.
Technologies: Java, Android, JavaScript, ABBYY, SQL, Android Camera App, Kotlin, SQLite, Software Development

Android/Java Developer

2014 - 2014
MBC Ingeniería
  • Designed and developed an Android app for real-time monitoring of oil wells.
  • Implemented communication between mobile front-end and back-end services via WebSocket protocol.
  • Created a 3D visualization and animation with OpenGL ES framework.
  • Solved various system integration tasks in a project.
  • Implemented user interfaces with native GUI views.
Technologies: OpenGL ES, Android, Java, SQLite, Software Development

Java Developer

2013 - 2013
Grupo Sellcom
  • Supervised the development of an Android project.
  • Developed a sales application used by field merchandisers and supervisors.
  • Implemented the communication of a mobile client with SOAP Web services.
  • Participated in technical interviews and training of new staff.
  • Consulted on mobile development.
Technologies: SOAP, Android, Java, SQLite, Software Development

Java Developer

2012 - 2012
Mobiik
  • Supported a previously developed application.
  • Worked on troubleshooting production issues.
  • Fixed bugs to enhance product reliability.
  • Made adjustments to UI as necessary to meet client requirements.
  • Worked with the Microsoft Azure cloud computing platform.
  • Worked on automated software tests.
  • Used agile methodologies (SCRUM).
  • Worked on a team of 10 developers.
  • Deployed software to different environments (development, test, and production).
Technologies: Git, Android, Java, SQLite, Software Development

Analyst and Developer

2011 - 2012
Storecheck
  • Created an Android application for data entry used by field auditors.
  • Implemented GPS functionality in a mobile app.
  • Worked with REST API.
  • Developed a CRUD back-end with Java Server Pages.
  • Learned and worked with MySQL.
Technologies: Android, Java, Software Development

Ph.D. student in Geophysics

2008 - 2009
University of Barcelona
  • Worked on field deployment and remote monitoring of seismometers for collection of seismic data of snow avalanches.
  • Performed statistical analysis of the retrieved experimental data.
  • Presented results at a conference.
  • Used MATLAB technical computing language and interactive environment for data visualization and analysis.
  • Worked on the design, integration, and testing of scientific field equipment.
Technologies: MATLAB

Localization Engineer

2007 - 2008
LocalVersion
  • Did localization engineering and quality control of the Google SketchUp desktop application in four languages.
  • Performed product testing.
  • Provided technical support for translators.
  • Performed technical translations from English to Polish.
  • Performed a linguistic assessment of the Polish language version of the application.
  • Used the Trados computer-assisted translation software suite.
Technologies: SketchUp

Graduate Research Assistant

2000 - 2004
Desert Research Institute
  • Worked on the implementation of new algorithms for numerical simulation of atmospheric physical processes in legacy Fortran code.
  • Ported code from Fortran to Interactive Data Language (IDL).
  • Performed data processing for my Master's Thesis (Thermodynamic Analysis of Marine Boundary Layer Stratocumulus).
  • Collaborated with various research institutes.
  • Participated in academic conferences and seminars.
Technologies: IDL, Fortran

3D Data Visualization

Real-time three-dimensional data visualization with OpenGL ES in an Android app.

Web Browser Automation with Selenium

Enhanced UI on a social site through web browser automation using a Selenium software testing framework for web applications.

Portfolio of sample apps

http://motisokar.github.io
Portfolio of sample apps.

Languages

Kotlin, Java, Python, SQL, JavaScript, Fortran, IDL, Clojure, Haskell, HTML, CSS

Platforms

Android, Linux, Eclipse

Libraries/APIs

OpenGL ES, React

Storage

SQLite, MySQL

Other

Back-end, Data Scraping, Scraping, Web Scraping, Software Development, SOAP, APIs, Integration, Architecture, Full-stack, Android Camera App, Applanga

Tools

Android Studio, MATLAB, SketchUp, Git, Jenkins, Jira, ABBYY

Paradigms

Functional Programming, Agile Software Development, Scrum

2000 - 2004

Master's Degree in Atmospheric Science

University of Nevada, Reno - Reno, Nevada

1998 - 2000

Master's Degree in Computational Physics

Nicolaus Copernicus University - Torun, Poland

1995 - 1998

Bachelor's Degree in Theoretical Physics

Nicolaus Copernicus University - Torun, Poland

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