Sinan is available for hire

Sinan Gunes

Verified Expert in Engineering

Android Developer

Location

Ankara, Turkey

Toptal Member Since

January 27, 2020

Sinan is the worldwide 55th developer certified by Google as an associated Android developer who has been working on Android projects professionally for the past ten years. He created his first Android app 13 years ago and managed to sell it while studying engineering at university. Sinan is an expert on current Android technologies and has been working on IoT projects requiring a byte to byte programming.

Code Review Java Android Firebase Espresso Kotlin Bluetooth iOS Swift JavaScript Dagger Model View ViewModel (MVVM)Unit Testing C++MySQL Android Automotive Data Compression

Portfolio

Aiden Automotive Technologies, Inc - Main

Android, Java, Kotlin, C++, Encryption, Data Compression, User Permissions...

Medici

Swift, Java, Kotlin, Android, Dagger, Test-driven Development (TDD)...

COOLSIS Technologies

Kotlin, Java, Objective-C, .NET, Swift, iOS, Android, Software Architecture...

Experience

Java - 14 years Android - 11 years Firebase - 5 years REST - 4 years Espresso - 4 years Android Automotive - 3 years Kotlin - 2 years Swift - 2 years

Availability

Full-time

Preferred Environment

Sketch, Adobe Illustrator, Terminal, Xcode, IntelliJ IDEA, Figma

The most amazing...

...project I've developed is Ride | Austin, a copy of the Uber application, which managed to provide one million rides in the first year.

Work Experience

Chief Technology Officer

2021 - PRESENT

Aiden Automotive Technologies, Inc - Main

Created a connected car ecosystem using the Android Automotive operating system.
Built an Android application that ensures the actual app is always up-to-date and has correct permissions granted.
Developed an effective protocol for client-server communication within the environment.

Technologies: Android, Java, Kotlin, C++, Encryption, Data Compression, User Permissions, Dagger 2, Code Review, Task Analysis, Technical Hiring, AOSP, Android SDK, Coroutines, Android Automotive

Android Chief Architect

2018 - 2021

Medici

Led a team of up to seven Android developers, recruiting, managing, coaching them while structuring and engineering the apps.
Developed patient and practitioner apps where the system allows them to find and communicate with each other on a HIPAA compliant channel.
Used Jira, Fabric, Adjust, Amplitude, and Facebook tools to track down the health of the application and statistically success story.
Was in constant communication with the team leads from QA, iOS, server, product, design, and support.

Technologies: Swift, Java, Kotlin, Android, Dagger, Test-driven Development (TDD), Android Jetpack, Unit Testing, Healthcare, Software Architecture, PostgreSQL, Room, Model View ViewModel (MVVM), Scrum, Agile, HIPAA Compliance, Dagger 2, Code Review, Task Analysis

Mobile App Developer

2017 - 2021

COOLSIS Technologies

Developed an application for teachers where they can track students' attendance, give them assignments, grade homework and exams, and contact their parents.
Managed existing apps for students and parents who were using very old technology on which I had to refactor a lot of parts.
Helped create new APIs for the team working on the server side, helping debug existing issues from a mobile perspective.

Technologies: Kotlin, Java, Objective-C, .NET, Swift, iOS, Android, Software Architecture, Task Analysis

Android Architecture

2016 - 2017

RideAustin

Developed an app that provides a ride-sharing experience.
Led the Android team consisting of up to five developers.
Developed an Uber-like application within three months from scratch.
Managed to provide a million ride-sharing experiences within the first year.

Technologies: MySQL, Java, Kotlin, Android, Dagger, Unit Testing, Instrumentation Testing, Testing, Software Architecture, Code Review, Task Analysis

Mobile Application Developer

2015 - 2016

SIR/Sera Software

Co-founded a small startup company with a couple of friends from university.
Developed a secure communication application using the SignalR protocol.
Mentored a junior developer to his best in Android.

Technologies: Objective-C, Android, iOS, Java, C++, JNI, Node.js, JavaScript, PHP

Experience

Medici

https://play.google.com/store/apps/details?id=com.medici

An Austin-based telehealth product within a startup company funded with over $20 million. The product consists of two applications, one for patients and another for providers. It is a cloud-based, scalable architecture system. It was beneficial during the COVID-19 pandemic.

Ride | Austin

https://play.google.com/store/apps/details?id=com.rideaustin.android

A Java-based ride-sharing application used in Austin. The first release was published in the first three months from scratch. Within the next nine months, we managed to provide one million ride-sharing experiences to the users.

I was one of the Android developers, and after a while, I was promoted to a team lead.

Appoint

https://play.google.com/store/apps/details?id=com.guness.appoint.client

This is a hobby project that we planned with a friend five years ago, and now we managed to publish the first MVP to the stores. It is a totally serverless app that is run over Firebase Functions.

I am the only engineer developing iOS, Android, Flutter, and Functions code.

The project contains two apps: one for barbershops, written in Flutter, and another one for clients, written natively using Swift and Kotlin.

Education

2014 - 2016

Master's Degree in Forensics

Gazi University - Ankara, Turkey

2006 - 2013

Bachelor's Degree in Electrical and Electronic Engineering

Bilkent University - Ankara, Turkey

Certifications

NOVEMBER 2019 - NOVEMBER 2022

Associate Android Developer, Worldwide #55th

Google Developers

NOVEMBER 2016 - NOVEMBER 2019

Associate Android Developer, Worldwide #64th

Google Developers

Skills

Libraries/APIs

RxJava 2, OpenGL, RxJava, Node.js

Tools

Android Jetpack, IntelliJ IDEA, Xcode, Terminal, Adobe Illustrator, Sketch, Metasploit, Figma

Frameworks

Dagger, Espresso, Dagger 2, Flutter, .NET, JNI, Mockito, Robolectric, Android SDK

Languages

Kotlin, Java, C++, Swift, JavaScript, Go, PHP, Objective-C

Paradigms

Model View ViewModel (MVVM), REST, Unit Testing, Testing, Test-driven Development (TDD), Scrum, Agile, HIPAA Compliance

Platforms

Android, Firebase, Android Automotive, iOS

Industry Expertise

Healthcare

Storage

PostgreSQL, MySQL, Redis

Other

Software Architecture, Rideshare Services, Code Review, Task Analysis, Instrumentation Testing, Technical Hiring, Bluetooth, Digital Forensics, Mobile Security, IoT Protocols, OWASP, Room, Encryption, Data Compression, User Permissions, AOSP, Coroutines

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