Milos is available for hire

Milos Jakovljevic

Verified Expert in Engineering

Software Developer

Belgrade, Serbia

Toptal member since March 6, 2016

Expertise

Objective-C MacOS Android iOS Android SDK Java SQLite Xcode C++JavaScript Jenkins Swift Android NDK FFmpeg UDP Unreal Engine

Bio

Milos has worked on various projects in his career. Starting from Android and iOS applications to cross-platform C++ development on games and applications. He has a lot of experience in different spheres of software development. from initial conceptualization to architecting and developing, and then to finally delivering the product to consumers.

Portfolio

Johnson & Johnson

Android, Java, Realm, Swift, iOS

Leanplum Inc. (via Toptal)

SQLite, C#, JavaScript, Java, Objective-C

SmartLivez (via Toptal)

Bluetooth Low Energy (LE), C++, Swift, Objective-C

Experience

iOS - 8 years Android - 8 years Objective-C - 8 years Java - 8 years C++ - 6 years Swift - 4 years JavaScript - 4 years Unity3D - 3 years

Availability

Part-time

Preferred Environment

Git, JetBrains, Xcode, OS X

The most amazing...

...app I've built was my first Android game, Offroad Kings, which was downloaded over half a million times.

Work Experience

Senior Software Engineer

2018 - 2020

Johnson & Johnson

Created a template UI for iOS and Android rendered completely from JSON configurations which are fully customized by the back end.
Developed new features and supported various apps.
Contributed to the architecture and database optimization to ensure better performance and maintainability.
Contributed to various infrastructure projects to ensure full automation of building and deploying both iOS and Android applications.
Improved the security of both iOS and Android applications, making sure all Veracode guidelines are followed to ensure maximum user data privacy.

Technologies: Android, Java, Realm, Swift, iOS

Software Engineer

2016 - 2017

Leanplum Inc. (via Toptal)

Developed various features for Android, iOS, and JavaScript SDK.
Maintained and bug-fixed iOS, Android, JavaScript, and Unity SDKs.
Developed and maintained various infrastructure projects to improve the quality of life of both developers and clients.
Contributed to the architecture and database optimization to ensure better performance.
Contributed to the design of APIs to ensure backward compatibility as well as new features.
Worked on multiple optimizations and improvements to support scalability.
Worked on unit tests from the ground up to provide more than 60% code coverage for both iOS and Android SDKs.

Technologies: SQLite, C#, JavaScript, Java, Objective-C

Senior iOS Developer

2016 - 2016

SmartLivez (via Toptal)

Improved the app's architecture.
Implemented various features which depended on CoreLocation, CoreData, and CoreBluetooth.
Improved the GestureRecognizer which uses real-time data from various BLE Sensor to recognize gestures.
Created various utility apps to provide real-world testing capabilities to an existing app.
Improved app performance.

Technologies: Bluetooth Low Energy (LE), C++, Swift, Objective-C

Senior Mobile Software Developer

2011 - 2016

Critspot

Developed, designed, tested, and published the game Offroad Kings for both on Android and iOS. It's a real-time multiplayer cross-platform game. Utilized a LibGDX engine to develop games for both Android and iOS (RoboVM) using Java. Created leader boards and achievements using Google Play Games and Game Center. Developed a real-time multiplayer with Google Play Games and Warp. Over 500.000 downloads on Android and iOS.
Developed, designed, tested, and published the game Orbed: Smash and Blast for both on Android and iOS. Orbed: Smash and Blast - an Android/iOS cross-platform adventure game. Utilized the LibGDX engine to develop the game for Android and iOS (RoboVM) using Java. Implemented various SDKs.
Developed Sisyphus Job for Android, and iOS. Utilized the Cocos2d-X engine to develop a game for Android and iOS using C++. Various techniques, algorithms, tools, and third-party frameworks used while developing.
Developed Like "A" Laugh, an Android application similar to 9Gag, used for showing web content.
Currently developing a real-time multiplayer cross-platform game for Android and iOS: OneTwoThree.
Implemented various SDKs (AdMob, Google Analytics, Google Play Games, Game Center, Fortumo, Warp, and so on).
Incorporated various techniques, frameworks, and tools while developing.

Technologies: Unity3D, Android NDK, OpenGL, Unreal Engine, Cocos2d-x, JavaScript, Python, Objective-C, Java, C, C++

Senior Mobile Software Developer

2014 - 2015

12Rockets

Developed Wheelio which is an Andorid and iOS application for photo editing. It supports an adding-text-on-photos feature, has stickers, custom fonts, clip art, and image filters.
Developed OnePaste which is an Android and iOS application that allows the user to seamlessly copy and paste from multiple devices. Currently only supports copying of plain text. Results are delivered instantly using push notifications.
Worked on the back end for OnePaste using Java with Google App Engine.
Developed Scanadu in collaboration with NASA which is an Android application that allows the user to do a fast health check. Used with multiple Bluetooth health devices like ECG, blood pressure, blood and urine lab tests, hearth rate, and much more.

Technologies: Android NDK, Android SDK, iOS, JavaScript, Python, Objective-C, C, C++, Java

Mobile Software Developer

2012 - 2015

PSTech

Developed a Sony mobile email application.
Built a Sony mobile calendar application.
Created a Plantronics application for controlling Plantronics headsets with a widget to show current battery status of a headset.
Developed the Sailing Tactician app for iOS and Android. It's an app for sailors which uses advanced algorithms to calculate the best route to the next buoy. It uses GPS, wind direction, currents, and Google/Apple maps where it displays the paths.
Created a Sony mobile clock, alarm, and stopwatch application.

Technologies: Python, C++, Objective-C, Java, iOS, Android SDK

Experience

Scanadu Vitals

A mobile application that uses BLE technology to communicate with different health devices (ECG, Blood Pressure, Blood Oxidation, Urine Tests and more) to log, preview and diagnose potential diseases based on input parameters.

The application was developed in collaboration with NASA and doctors around the world to build proper algorithms to diagnose potential diseases.

The application was developed for XPRIZE competition and is not yet publicly available.

I was responsible for creating a library on top of the Android BLE implementation for easy management of connections, data transfer, and reliability of various BLE devices.

Sony Mobile - Email Application

Developed and maintained an Android application bundled with Sony Mobile phones.

I was responsible for the IMAP, POP3, and Microsoft Exchange protocols; adding features and reliability to existing code.

Sony Mobile - Calendar Application

Developed and maintained an Android application bundled with Sony Mobile phones.

I was responsible for implementing new features and improving the performance and code reliability of custom components.

Sony Mobile - Clock, Alarm, and Stopwatch

Developed and maintained an Android application bundled with Sony Mobile phones.

Sailing Tactician - iOS, Android

Sailing Tactician is a smartphone app which helps sailing teams win regattas. It runs on iPhone, iPad, and Android devices.

Sailing Tactician will help you prepare for the race start, navigate you through the race field, and help you win the race by giving you accurate data about your current speed, position, heading, wind direction, VMG to mark/wind, distance and time to the next mark, and more.

I was responsible for developing the Android application, the planning, and porting features to the iOS application

Wheelio - Text on Photos for iOS

Wheelio is a photo editor that allows you to easily apply text, filters, and effects to your photos. Use different fonts and professionally designed photo filters to create stunning pictures you will love sharing with your friends.

My responsibility was to lead a team of three developers, architecting, and developing custom features.

Wheelio - Text on Photos for Android

OnePaste - iOS / Android / OS X

Cross-platform application for iOS, Android and OS X to copy and paste data between devices with ease.

My responsibility was to lead a team of two developers (Android and iOS), developing a back-end using Google App Engine, OS X application, and cross-platform protocol.

PaaS - Multiplayer Back-End for Game Developers

PaaS allows game developers to focus on their game and forget about low level communication protocols and build extraordinary multiplayer games with ease.

I was responsible for the low-level communication using UDP sockets and defining protocols written in C++.

Currently in development.

Plantronics - Headset Applications for Android

Built various apps for Plantronics using Bluetooth technology to monitor current state of devices.

Sisyphus Job for Android

Built a 2D cross platform game developed in Cocos2d-x.

Sisyphus Job for iOS

Built a 2D cross platform game developed in Cocos2d-x.

Orbed: Smash and Blast for iOS

Built a 2D cross platform game developed with LibGDX.

Orbed: Smash and Blast for Android

Built a 2D cross platform game developed in LibGDX.

Offroad Kings

Built a 2D cross platform game developed in LibGDX.

Contributed to an Open-Source Game Engine Cocos2d-x

Added a few features to an open-sourced game engine Cocos2d-x.

I'm an active member on the forums and I like to help other members with their problems.

Education

2020 - 2021

Master's Degree in Software Engineering and Information Technologies

University of Novi Sad - Serbia

2015 - 2019

Bachelor's Degree in Information Technologies

University of Novi Sad - Serbia

2009 - 2013

Bachelor's Degree in Software Engineering

University of Belgrade - Belgrade, Serbia

Skills

Libraries/APIs

Node.js, Firebase Android SDK, FFmpeg, Firebase iOS SDK, React, OpenGL

Tools

Jenkins, Android NDK, Xcode, Android Studio, Gradle, Travis CI, Google Analytics, JetBrains, Git

Languages

JavaScript, Swift, Objective-C, C++, Java, C#, C, SQL, Python

Frameworks

iOS SDK, Cocos2d-x, Android SDK, ASP.NET MVC, RealmSwift, Unity3D, LIVE555, Boost, Unreal Engine

Paradigms

Scrum, App Development, Agile Software Development, Concurrent Programming, API Architecture

Platforms

Firebase, MacOS, Android, iOS, Heroku, Linux, Windows, OS X, Bluetooth Low Energy (LE), Google App Engine

Storage

SQLite, Redis, NoSQL, MongoDB, PostgreSQL, Realm

Other

Front-end Development, Freelancing, H264, H.265, Video Streaming, AVFoundation, TCP/IP, UDP, Machine Learning, Computer Vision, Neural Networks, Code Architecture, Software Engineering, Boost.Asio, Google AdMob

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