iOS Expert Developer

TWT Digital is a startup based in São Paulo and is currently looking for a passionate iOS developer to help us build an amazing app leveraging the latest and greatest features of the iOS development platform.


The iOS developer is responsible for contributing to the architecture and development for all aspects of the app. Ideal candidates must thrive in the start-up culture of sweat and constant innovation.

Along with knowing the basics of iOS development, an ideal candidate has extensive knowledge of advanced concepts such as custom UI controls, advanced memory management, Core Data, iCloud, databases, Big Data and integration into our server-side APIs.

We are looking for someone who has a deep technical knowledge but also recognizes the impact of design and UX, and has a proven track record of delivering software capable of surprising and delighting users.

Job Requirements

Experience with iOS, Objective C and Cocoa Touch

Fundamentals in object-oriented design, data structures, algorithm design, problem solving, and complexity analysis

Experience with Git, Core Data, JSON and Web Services

Huge experience with working with the GPS

Experience building complex iOS apps that have been successfully delivered to customers

Exceptional analytical aptitude and attention to detail

Good organizational and problem solving skills

Good team player who is self-motivated and well organized

Port our existing app Zoemob to iOS : [url removed, login to view]


Must be wise in the ways of iOS development.

Customizing UI controls.

Creating advanced transforms/animations.

Familiar with advantages and pitfalls of Core Data.

Architecting apps that utilize memory efficiently and debugging memory issues with Instruments.

Asynchronous network calls and image downloads.

In-app purchases using Store Kit.

User account management (currently managed via Parse API)

Synchronizing data between app and web database

iCloud integration

Must be creative

Must be awesome

Must be motivated. We’ll be counting on you to deal with ambiguity, solve-problems, and work with little direction.

If you are a match for this position, send us your CV along with the number of hours you can work per week. We would love to have someone working at least 30+ hours within the interval 08:00 AM - 10:00 PM (GMT -3).

Don't forget to include the apps you have created and are LIVE on iTunes.

Let's build an awesome solution together!

Skills: iPad, iPhone, Mobile App Development, Objective C

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About the Employer:
( 0 reviews ) S?o Paulo, Brazil

Project ID: #4545480

26 freelancers are bidding on average $53/hour for this job


Hi Jose, With over 700+ Apps Developed, we are the leaders in Mobile App Development with expertise on iPhone, Android & BlackBerry. Please have a look on our Portfolio in PMB. Lets discuss the Project in detail. More

$54 USD / hour
(39 Reviews)

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$63 USD / hour
(213 Reviews)

We are an expert in building Mobile Apps. Please check your PMB. Thanks

$50 USD / hour
(80 Reviews)

Hi, We have designed and built websites for various types of businesses very successfully. We work with all of our clients individually to easily synchronize and to keep track of the requirements and scope. We fulf More

$51 USD / hour
(28 Reviews)

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$52 USD / hour
(136 Reviews)

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$51 USD / hour
(89 Reviews)

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$51 USD / hour
(97 Reviews)

Hi, we have read all the requirements and we are very confident to do this project from start till end. We definitely have some questions when we discuss project with u. We shall finish this project in timely manner a More

$51 USD / hour
(34 Reviews)

I am IOS Expert, ready to do this.

$51 USD / hour
(50 Reviews)

Can I help you?

$50 USD / hour
(82 Reviews)

Expert programmer team for webapp HTML5 Jquery mobile,PHP,,HTML5 with phonegap,Iphone,Ipad,BB,Android,OpneGLes2.0,AR Apps,Unity3D,cocos2D game and utility apps development please check your PM for more details More

$51 USD / hour
(89 Reviews)

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$51 USD / hour
(16 Reviews)

Hello, We would like to confirm our interest in this opportunity. Please check your private message box for our proposal. Thanks... P.S Check our portfolio for the scale of applications we have developed. More

$50 USD / hour
(46 Reviews)

Hello, Please refer your Inbox. Thank you!

$51 USD / hour
(39 Reviews)

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$51 USD / hour
(33 Reviews)

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$51 USD / hour
(15 Reviews)

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$51 USD / hour
(47 Reviews)

Respected Client, Please check PMB for listing and confident to complete the project with quality services.. Best Regards

$51 USD / hour
(40 Reviews)

hello i have gone through your requirement and am interested in working on the same i have skills that matches your requirement and am really looking forward to this opportunity please open pmb so i can send you my More

$52 USD / hour
(9 Reviews)

Dear Sir, I'd like to discuss the detail scope of project with you. Please check your PMB. Best regards

$51 USD / hour
(11 Reviews)