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Jasper Siebelink | Elance
Last Sign-in: Apr 5, 2015
Sorry, I am not available for new work at this time.

Jasper Siebelink

Senior iOS Developer
  |   Doetinchem, Gelderland
  |  7:57 am Local Time

Verified Freelancer

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Good day!

I am an independent mobile app developer with all-round experience, able to build the front-end mobile application for the most popular mobile operating systems (iOS, Android, Blackberry, Windows Mobile/Phone) as well as being able to maintain a backend implementation for this application.

Having built both small and large-scale mobile applications, I have gained a broad range of experience in software development. During the past years, I was responsible for building software for the latest smartphones and tablets. In addition,...

Read More »
Apr 2, 2014|Mobile Applications|$395|Completed
Feb 26, 2014|Mobile Applications|$550|Completed
Feb 14, 2014|Mobile Applications|$1,644|Completed
Jan 15, 2014|Mobile Applications|$200|Completed

View All »


6000+ customer selection in tableview. Support for quick-jump through alphabet on the...!catalog/c1han
The catalog contains a list of wholesale products that can be browsed through like a...!catalog/c1han
Product details overview, displaying all applicable product prices, and additional...!catalog/c1han
Welcome screen, giving the user the option to select a customer to start a new order,...!catalog/c1han
A quick navigation similar to iBook where the user can browse through all the pages in...!catalog/c1han
The details-screen of a disease containing text overview and several images or a video...!genzyme/ckra
A categorised overview of selectable symptoms that result in an overview of possible...!genzyme/ckra
An overview of possible diseases based on user-input.!genzyme/ckra
A detailed overview of a disease!genzyme/ckra
A screen with disease details!genzyme/ckra
An insurance assistance request sent through the backend. The user's location is...!helpme/cl3g
First page of the application. Vehicle assistance or medical assistance can be...!helpme/cl3g
HelpMe splash screen of the application!helpme/cl3g
User can call central, inoculation, a travelling doctor or a general assistance number...!helpme/cl3g
Sign up for SMS alert informing of nearby disasters.!helpme/cl3g
A quick and easy way to get an overview of nearby ATMS known to Mastercard and a route...!knab/c3c1
A quick overview of the total saldo, all the payments, savings and assets accounts,...!knab/c3c1
In-app money transferring between own accounts, to an external account or paying a bill...!knab/c3c1
An overview of the entire history of all known accounts, separated over month and year.!knab/c3c1
Pay a received bill by scanning it in, having the app run text recognition to determine...!knab/c3c1

Skills (15)

iPad App Development
iOS Development
Blackberry App Development
iOS 7
iOS 8
iPhone App Development
iPhone SDK
Artificial Intelligence

Service Description

Extensive experience working with C#, C++. Java, Objective-C while also being responsible for the backend implementation in C# and Ruby On Rails with embedded HTML and CSS.

Version management tools experience with SVN, Github, TFS and SVN, alongside a RUP or SCRUM development process.

When working on projects, I always make sure an issue tracking system is in place to give a good history and overview of the project at any given time. If there is no existing one available for the project, I will supply one for milestone-overview, task tracking, hour estimations and bug reports.

Next to implementation, I can assist with app design, testing and submission the app store in question when required. During development the app will also be made available at any time for testing by the customer, to make sure the project is on the right track as well as giving visual feedback of the progress made.

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Freelance iOS developer
2013 - Present
An iOS universal project I built for RedTail Advantage from the United States involved realising the idea of a health events tracker on iPhone and iPad. The user can keep track of his/her...
Freelance iPhone developer
2013 - Present
RadarBoys is a project I work on for a client in the Netherlands. It is a two-tier system which involves implementing an iOS and Android application that connects to a Bluetooth device as can be...
CNS Projects
Freelance iPad developer
2012 - Present
Key responsibilities and achievements: Implementing an iPad catalog application for D-Line, connecting to an HTTPS JSON backend for updates and additions to the backend customer and order...
Freelance iOS developer
2013 - 2013
One of my customers worked on a larger-scale application that required access to the iPhone address book. Though there is an API available for this, the customer also required custom graphical...
Virtual Affairs, Amsterdam
Senior iOS Developer
2011 - 2012
Key responsibilities and achievements: Assisted in setting up a dedicated mobile team within Virtual Affairs. Lead a mobile team for the development of a bank application for Android and iOS....
Steape BV, Amsterdam
Lead Developer
2009 - 2011
Key responsibilities and achievements: Maintained the Ruby On Rails-web interface for creating and maintaining mobile applications. Lead the planning and development of new features added to...
Magistro, Culemborg
Java Server Faces Developer
2007 - 2008
Maintained the Java Server Faces project generation system. Set up a prototype JBoss Enterprise Server Bus for future customer purposes. Mapped Edifact medical standards to a Java-system...
Numdata, Eibergen
Graduate Intern Developer
2005 - 2006
Designed a system that maps two-dimensional perspectives into a single complex three-dimensional model. From this model, a set of furniture fabrication operations can be derived. Implemented...
ISM eCompany, Rotterdam
Intern Developer
2004 - 2005
Wrote a Visual Basic program that allows the user to select portions of the Rational Unified Process development procedure and import/export it to a Microsoft Project format. Implemented a...


University of Utrecht
Master Game & Media Technology
2007 - 2009
Hogeschool Enschede
Bachelor Software Engineer
2002 - 2007


mobile iphone ipad multimedia apps app development freelance objective-c android java blackberry windows mobile iOS programming objectivec i-phone apple
My Snapshot
IT & Programming
Elance Level
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  • 12 months
  • Lifetime
Per Client
Member Since
January 2013
Elance URL
Jasper Siebelink | Elance

Jasper Siebelink