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Rafal Niski

Rafal Niski

Gdańsk, Poland
Member since February 16, 2014
Rafal is a talented Android developer with five years of professional experience, including custom apps created for companies such as Jagermeister and McDonald's. Among other things, he's an expert in networking, beacons, and location services.
Rafal is now available for hire
Portfolio
  • SafeTrek
    Android Wear, REST API, Location Services, Java, Kotlin
  • TravelBank
    RxJava, Dagger2, LiveChat, Sentry, MVP
  • TagStone
    RFID, RxJava, Dagger, Location Services, REST API, MVP
Experience
  • Android SDK, 5 years
  • Java, 5 years
  • Unit Testing, 4 years
  • iBeacon, 4 years
  • Android Studio, 3 years
  • Continuous Integration (CI), 3 years
  • RxJava, 3 years
  • Dagger 2, 3 years
Gdańsk, Poland
Availability
Part-time
Preferred Environment
Android Studio, Git, Trello, OS X
The most amazing...
...application I've coded is a 3D visualization map for projecting SHP format files on the fly.
Employment
  • Senior Android Developer
    2018 - 2018
    SafeTrek
    • Created an Android Wear app from scratch.
    • Implemented a battery-efficient location fetching service.
    • Created many custom views based on Canvas.
    Technologies: Android Wear, REST API, Location Services, Java, Kotlin
  • Senior Android Developer
    2017 - 2017
    TravelBank
    • Created the module responsible for booking flight tickets.
    • Redesigned many design components and created many custom ones from scratch: f.ex. toolbar, flight seat selection, etc.
    • Created architecture based on the Model-View-Presenter and dependency injection framework.
    • Integrated LiveChat for customer service.
    • Fixed many performance issues related to views rendering.
    Technologies: RxJava, Dagger2, LiveChat, Sentry, MVP
  • Senior Android Developer
    2016 - 2017
    TagStone
    • Developed a tablet app for a telco company.
    • Added many features to the car fleet management app.
    • Worked on the architecture of the app from scratch.
    • Structured the app with MVP design pattern, Dagger2, and RxJava.
    • Integrated Bitrise as CI and Hiptest for automated testing.
    • Integrated RFID card scanning and REST API web services.
    Technologies: RFID, RxJava, Dagger, Location Services, REST API, MVP
  • Senior Android Developer
    2016 - 2016
    Inventrip
    • Created cache architecture based on Realm.io.
    • Developed a background service for monitoring iBeacons.
    • Integrated Eddystone beacons into the service.
    • Refactored the codebase with RxJava and Dagger 2.
    Technologies: Bluetooth Low Energy, iBeacon, RxJava, Dagger 2, Realm.io
  • Lead Android Developer
    2014 - 2016
    Everytap
    • Created a communication layer with Estimote Beacons.
    • Architected the app and developed new features in a startup environment.
    • Implemented material design and custom animations.
    • Maintained a major focus on code quality. Used dependency injection and RxJava.
    • Established a build system with continuous integration, crash reporting, and test automation.
    Technologies: Android SDK, Estimote Beacons, Bluetooth Low Energy, Travis CI
  • Android Developer
    2014 - 2014
    United Ideas
    • Created many applications from scratch for clients, such as McDonald's and Jagermeister.
    • Helped port iOS 7 apps to Android.
    • Fixed bugs as well as compatibility and efficiency problems in existing applications.
    • Created custom views for a range of devices.
    • Delivered products and supervised other developers in a team.
    Technologies: Android, Android Studio, Eclipse, Parse SDK, Google Analytics, AdMob
  • Software Engineer
    2012 - 2014
    Intel
    • Developed an OpenGL driver for Intel’s GPUs in a Windows environment.
    • Profiled code, conducted static data analysis, fixed bugs, and addressed security issues.
    • Used Redmine for project management.
    • Ran daily Scrum stand-up meetings.
    Technologies: C++, C, OpenGL
  • Android Developer
    2012 - 2013
    Axis
    • Developed an Android application for controlling weight systems.
    • Programmed interface enhancement for network parallel communication.
    • Developed a socket-based interface for hardware using broadcast and multicast techniques.
    • Adjusted the design for tablets and internationalization support.
    Technologies: Android API, Java, SVN
  • Zend Programmer
    2011 - 2012
    Blue Services
    • Developed back-end applications for some of the largest companies in the banking industry.
    • Developed a poll system with 3D visualization of results.
    • Designed and implemented the landing page.
    • Fixed multiple security issues.
    Technologies: Zend Framework, Elgg Framework, PostgreSQL, Git, JIRA
  • Programmer
    2011 - 2011
    Wirtualna Polska
    • Worked in a group of six people within a Scrum environment.
    • Developed a fully-functional CMS for creating template websites.
    Technologies: OO PHP, Oracle, SVN
Experience
  • TravelBank (Development)
    https://play.google.com/store/apps/details?id=com.travelbank.app

    TravelBank is an expense app, powered by budgets. You can capture receipts on-the-go and track business expenses for reimbursement or tax purposes. I was responsible for creating a new feature for booking flight tickets.

  • Heal - On-demand Doctor Visits (Development)
    https://play.google.com/store/apps/details?id=com.getheal.patient

    Heal is a Uber-like app for requesting doctors to your home. I implemented the new design, created a whole scheduling system in the app, and fixed issues before releasing the app to Google employees.

  • Everytap (Development)
    https://play.google.com/store/apps/details?id=com.everytap

    Everytap is a startup company that operates with Estimote Beacons. You can earn points for visiting your favorite venues. I was responsible for app architecture and development from scratch.

  • Amber (Development)
    https://play.google.com/store/apps/details?id=com.amber.amber

    Amber is a loyalty app which lets you earn and redeem points for the world's finest brands. I was responsible for implementing the whole app redesign, adapting it to RTL language and communication with the REST API.

  • McDonalds' Poland Official App (Development)

    I was responsible for developing unit tests and building the system for test automation.

Skills
  • Languages
    SQL, Java, Kotlin
  • Frameworks
    Dagger 2, Android SDK
  • Libraries/APIs
    RxJava, Mixpanel Android API, Parse SDK, Facebook SDK, Twitter API, Dropbox API
  • Tools
    Android Studio, Subversion (SVN), Git, Perforce, Eclipse IDE, Xcode
  • Paradigms
    Unit Testing, Model View Presenter (MVP), Continuous Integration (CI), Functional Programming, Object-oriented Programming (OOP)
  • Platforms
    Android, iOS, Linux, Mac OS, Oracle, Windows
  • Storage
    SQLite
  • Other
    iBeacon, Bluetooth Low Energy/BlueZ stack, Google Material Design
Education
  • Master of Science degree in Computer Science
    2009 - 2014
    Gdansk University of Technology - Gdansk
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