• Projects: Arena Mietmöbel Webapplication
  • Mobile API Backend Project
  • Secure Mobile Payment Plattform (Smpp)
  • I love MyMedia iOS Android App (Relaunch)
  • SayWay Android App Online Reporting
  • MyNewsPanel iOS/Android App
  • I love MyMedia iOS Android App
  • BoosterVOC® QueryBuilder
  • SessionVOC® Session Store
  • SimpleVOC® Open Ruby API
  • Freelance Status iPhone App
  • LLM.Uniiks.com / Uniiks Career Network
  • Online Credit System 3.0
  • BZL Track and Trace / SNV Customer Management
  • BZL Track and Trace Online Services / AMProxy
  • Education 12/2004 Sun J2EE Web Component Developer Certification Sun 11/2004
  • 2001 - 2002 BWL (Business) Fernuniversitaet Hagen, Hagen, Germany 1995 - 1996
  • Curriculum Vitae of Oliver Kiessler 05/09/2020




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    Curriculum Vitae of Oliver Kiessler
05/09/2020


    Address:
Stüttgerhofweg 11
DE-50858 Cologne
Germany
https://oliver-kiessler/en/index.html


    I'm an experienced freelance app and webdeveloper focused on mobile apps (iOS/Android/Ionic) and secure webapps (Angular/React) and API backends (Fullstack development with Ruby on Rails/NodeJS/Serverless).
    I'm available for software development contracts and projects (remote or onsite in Germany).

    Projects:
    Arena Mietmöbel Webapplication
    Arena Mietmöbel GmbH, Frechen/Germany
    Development and enhancements for the existing webapp.
    https://arena-mietmoebel.de
    Scope of Work:

    Software Development
    Technologies used:

    Ruby 2.1, Ruby on Rails 4.1, mySQL 5.5

    poesi Ionic 3 App
    Lukas Hermann, Essen/Germany
    Development and enhancements for the existing app:
    Poesi is a digital collection of poems.
    https://poesiapp.org
    Scope of Work:

    Software Development
    Technologies used:

    Ionic 3.9, Typescript, Node 10, AngularJS Admin, REST, JSON, iOS, Android

    Mobile API & Backend Project
    DOMENICEAU, Aachen/Germany
    Participation in the software development of an app project in the fashion industry.
    Development of a mobile API & a backend admin webinterface.
    Scope of Work:

    Software Development
    Technologies used:

    Angular 7, Typescript, Javascript, Serverless (AWS Lambda / Node 8), AWS S3, AWS DynamoDB, REST, JSON

    myBusiness.AI
    Mobile2b GmbH, Cologne/Germany
    Participation in the software development of the Angular web frontend.
    Scope of Work:

    Software Development
    Technologies used:

    Angular 5, Typescript, Javascript, Node 8, REST, JSON

    RadioMonster.FM
    Streampanel, Hannover/Germany
    Internetradio app with background audio streaming.
    Scope of Work:

    Software Development
    Technologies used:

    React Native, Javascript, iOS, Android

    EnigmaX
    Netempire Software GmbH, Cologne/Germany
    Web- and desktop app for company wide password management (using hybrid encryption).
    Scope of Work:

    Consulting, Software Development
    Technologies used:

    Angular 5.2, Typescript, PGP, Electron (MacOS, Windows, Linux), REST, JSON, Ruby 2.5, Ruby on Rails 5.2, MongoDB 3.6

    Studitemps Mobile App
    Studitemps GmbH, Cologne/Germany
    Consulting and participation in the development of a hybrid mobile app (until 2018).
    Scope of Work:

    Consulting, Software Development
    Technologies used:

    Ionic 3.9, Typescript, Jasmine, Karma, REST, JSON, Node 6, iOS, Android

    Secure Mobile Payment Plattform (Smpp)
    rheinlandmobil GmbH, a company of Sparkassen-Finanzgruppe, Cologne, Germany
    Platform for secure payment transactions and processes.
    Development of native apps (iOS/Android), mobile SDK's and an API Backend (Ruby).
    Scope of Work:

    Consulting, Software Development
    Technologies used:

    iOS 10 (Swift 3), Android 7 (Java), Encryption, Ruby 2.2 / JRuby, Ruby on Rails 4.2, MySQL 5.7

    SKOPOS CONNECT Backend
    SKOPOS CONNECT connects companies directly with their customers by utilizing insight communities.
    Participation in the development of a backend API for community participant management and an Angular based HTML5 frontend
    Scope of Work:

    Consulting, Software Development, System Architecture
    Technologies used:

    NodeJS, ExpressJS, mySQL 5.5, Sequelize, Javascript, HTML5, AngularJS 1.4, Grunt, Mocha/Karma, PhantomJS

    I love MyMedia iOS & Android App (Relaunch)
    IP Deutschland GmbH / GapFish GmbH / Smartclick Solutions, Cologne, Germany
    http://itunes.apple.com/de/app/id508003010?mt=8

    https://play.google.com/store/apps/details?id=de.ipdeutschland.ilovemymedia&hl=de
    Scope of Work:

    Consulting, Software Development
    Technologies used:

    iOS Universal App: iOS 8, Swift 1.2, XCode 6.3, CocoaPods, JSON API, OAuth 2, CircleCI

    Android: Android 5.0, Java 7, Android Studio, JSON API, OAuth 2, CircleCI

    mingle Android App
    respondi AG / Smartclick Solutions, Cologne, Germany
    By using the mingle app you may participate in topics of decision-making, the economy, science and current affairs.
    https://play.google.com/store/apps/details?id=de.respondi.app
    Scope of Work:

    Consulting, Software Development
    Technologies used:

    Java, Android 4.x, Eclipse, XML, SOAP

    teVidi Remote
    teVidi GmbH, Frechen, Germany
    iOS 7 Optimization

    Refactoring (Network & Security)
    teVidi offers integrated security and information systems for motorhomes and caravans.
    https://itunes.apple.com/us/app/id618354626?mt=8
    Scope of Work:

    Software Development
    Technologies used:

    iOS 7.1 (Universal App / iPhone & iPad), Objective-C, XCode 5.2

    SayWay Android App & Online Reporting
    SayWay GmbH / Cologne, Germany
    SayWay delivers customer feedback systems for everyone: Tablet PC's with the SayWay survey app are used in a mobile or stationary setting. The survey data is being sent back to the server in order to be used in an online-reporting analysis tool for the customer (benchmark and branch comparison included).
    Scope of Work:

    Consulting, Software Development (Backend & App), System Architecture
    Technologies used:

    Android 2.3 & 3.2, Java, Javascript, JQuery, Ajax, REST Webservices (JSON), Ruby 1.9.3, Ruby on Rails 3.2, MongoDB 2.0, Amazon EC2 & S3

    MyNewsPanel iOS/Android App
    IP Deutschland GmbH / Smartclick Solutions, Cologne, Germany
    https://itunes.apple.com/de/app/id698580042?mt=8
    https://play.google.com/store/apps/details?id=de.ntv.mynewspanel&hl=de
    Scope of Work:

    Consulting, Software Development
    Technologies used:

    Android: Java, Android 2.2, Eclipse, XML, SOAP

    iPhone: iOS 6.1, Objective-C, XCode 4.6, XML, SOAP

    B4Fun iOS App
    triAGENS GmbH / Lucreo GmbH & Co. KG / Cologne, Germany
    Participation in the B4Fun project
    The B4Fun app is a betting app that's not about winning money. It's all about creativity and enjoying the fun of betting with your friends.
    https://itunes.apple.com/de/app/b4fun/id560155253?mt=8
    Scope of Work:

    Software Development
    Technologies used:

    iOS 5, Objective-C, XCode 4.3, Twitter, Facebook, JSON Webservices

    I love MyMedia iOS & Android App
    IP Deutschland GmbH / Smartclick Solutions, Cologne, Germany
    http://itunes.apple.com/de/app/id508003010?mt=8

    https://play.google.com/store/apps/details?id=de.ipdeutschland.ilovemymedia&hl=de
    Scope of Work:

    Consulting, Software Development
    Technologies used:

    Android: Java, Android 2.2, Eclipse, XML, SOAP

    iPhone: iOS 5, Objective-C, XCode 4.3, XML, SOAP

    GP OnSite for Android
    Globalpark Inc. (a QuestBack company) / Smartclick Solutions, Cologne, Germany / New York, USA
    Globalpark ONSite is the way to connect with your Android phone to your Globalpark online community.
    https://play.google.com/store/apps/details?id=com.globalpark.android
    Scope of Work:

    Software Development
    Technologies used:

    Java, Android 2.3, Eclipse, XML, SOAP

    BoosterVOC® QueryBuilder
    triAGENS GmbH, Cologne, Germany
    Implementation of a webadministration interface to visually create and execute queries in BoosterVOC.
    http://www.worldofvoc.com/products/boostervoc/summary/
    Scope of Work:

    Software Development
    Technologies used:

    Javascript, jQuery, Underscore.js, Ajax, REST Webservices (JSON), NoSQL

    SessionVOC® Session Store
    triAGENS GmbH, Cologne, Germany
    Implementation of an Open Source Ruby on Rails library for the SessionVOC® Open by triAGENS. The SessionVOC® is a noSQL database optimized for the management of user sessions.
    http://www.sessionvoc.com/

    https://github.com/triAGENS/SessionVocRuby-OPEN
    Scope of Work:

    Software Development
    Technologies used:

    Ruby 1.8, Ruby on Rails 3.0, SessionVOC® Open 1.7.3, NoSQL, REST Webservices (JSON)

    KidsKarton
    Andreas Schwab & Pascal Auber GbR, Markgröningen, Germany
    KidsKarton.de is a german online marketplace for parents to swap used children's clothing.
    Software Development & Refactoring of the webapplication

    Migration to Amazon EC2
    Scope of Work:

    Consulting, Software Development, System Architecture
    Architecture Technologies used:

    Ruby 1.8.7, Rails 3.0.5, mySQL5, Amazon EC2 & S3

    SimpleVOC® Open Ruby API
    triAGENS GmbH, Cologne, Germany
    Implementation of an Open Source Ruby library for the SimpleVOC® Open by triAGENS. SimpleVOC® is a pure in-memory key/value store with a REST Interface.
    http://www.simplevoc.com/

    https://github.com/triAGENS/SimpleVOCopen-Ruby
    Scope of Work:

    Software Development
    Technologies used:

    Ruby 1.8, SimpleVOC® Open 1.8, NoSQL, REST Webservices (JSON)

    BigSky iOS App

    Globalpark AG / Smartclick Solutions & Globalpark AG, Hürth, Germany

BigSky is the Globalpark outdoor community. This app connects your iPhone or iPod touch to Globalpark feedback software. Get the latest news, participate in interesting surveys and share photos with other community members.


    http://itunes.apple.com/de/app/bigsky/id413505317?mt=8
    Development of a Serverside Apple Push Gateway Integration

Scope of Work:
Consulting, Software Development, System Architecture

Technologies used:
XCode, Objective-C, iPhone SDK 4.x, XML, SOAP, Push Messages

    SURFONAUT.com

    http://surfonaut.com
SURFONAUT.COM E.K.

Website Discovery Community

Participation in the Development of the Webapplication
Realization of the iPhone Competition
Migration to Amazon EC2

Scope of Work:
Consulting, Software Development, System Architecture

Technologies used:
Ruby 1.8.7, Rails 2.3.5, mySQL5, Amazon EC2 & S3



    Hitmeister iPhone App

    http://www.hitmeister.de
Hitflip Media Trading GmbH

You use the Hitmeister iPhone App to search for more than 7.000.000 products on the go and compare prices. It also comes with an incredibly useful barcode scanner to easily identify a product.

http://itunes.apple.com/de/app/hitmeister-100-sicher-kaufen/id364149852

Scope of Work:
Consulting, Software Development

Technologies used: 
XCode, Objective-C, iPhone SDK 3.0, Redlaser SDK



    BallSide

    http://www.ballside.com
BallSide GmbH

The Global Statistics Network for Youth and Amateur Basketball Teams (Web 2.0 / Social Network)

Scope of Work:
Consulting, System Architecture, Software Development, Scrum Master 

Technologies used:
Ruby 1.8.7, Rails 2.3.5, mySQL5, ImageMagick, Ajax, Javascript/Prototype, Amazon EC2 & S3, Google Charts API, PDF Generation, PayPal API Integration, Twitter Integration (OAuth)



    fairytown

    http://fairytown.de
fairytown UG

fairytown (Web 2.0 / Social Network / Local Search) 

Scope of Work: 
System Architecture, Software Development 

Technologies used: 
Ruby 1.8.6, Rails 2.3.2, mySQL5, ImageMagick, Ajax, Javascript/Prototype, Amazon EC2 & S3



    Freelance Status iPhone App

    http://freelancestatus.com
Freelance Status / Oliver Kiessler

iPhone App to display Requests and Clients from an freelancestatus.com account

Scope of Work: 
Software Development

Technologies used:
Objective-C, iPhone 3.1 SDK, XML, Webservices, Integration with Merb-based Backend (Ruby)



    Goodstock Relaunch

    http://goodstock.eu
Goodstock / Netempire AG

Goodstock Website Relaunch (Online Shop for HDR Premium Photography)

Scope of Work:
Software Development

Technologies used:
Ruby 1.8, Rails 2.3.2, mySQL5, ImageMagick, Ajax, Prototype



    SPlus

    Sparkasse Koeln-Bonn / Netempire AG

Internal Banking Application

Scope of Work: 
Software Development 

Technologies used:
JRuby (Ruby 1.8), JBoss 4.2.3 (War File Deployment with Warbler), Oracle 9i (JDBC), Rails 2.2, SOAP Webservices (soap4r)



    Bannerserver

    Netempire AG

Failsafe Amazon S3 based Bannerserver / Banner Editor (Banner are published to and served from Amazon S3 as HTML IFrame's / Tracking goes back to the Bannerserver)

Scope of Work: 
System Architecture, Software Development 

Technologies used:
Ruby 1.8, Rails 2.3.2, File Uploads, Imagemagick, mySQL5, Amazon S3, Banner, Flash Banner



    Uniiks Career Network

    http://www.uniiks.com
forumtelemedia Verlags GmbH & Co. KG

Uniiks Career Network / LLM.Uniiks.com / MBA.Uniiks.com / BM.Uniiks.com 

Scope of Work:
Software Development / Systemadministration

Technologies/Methodologies used:
Ruby 1.8, Debian Linux, Mac OSX, mySQL 5, Rails 2.1, REST Webservices (ActiveResource), Ajax/Prototype, Ferret, Amazon S3, Agile, TDD, Scrum



    ephunk

    http://www.ephunk.net
ephunk Limited

Scope of Work: 
Software Development / Documentation

Technologies/Methodologies used: 
Ruby 1.8, Rails 2.0, mySQL 5, Sphinx, Debian Linux, Mac OSX, Clustering (nginx, mongrel, mongrel_cluster)



    Stylespotted

    http://www.stylespotted.com
Spotted Media

Web 2.0 / Social Network / Local Search

Scope of Work:
Software Development & System Architecture / Scrum Master 

Technologies/Methodologies used:
Ruby 1.8, Rails 2.0, Google Maps, mySQL 5, Sphinx, Prototype/Ajax, Debian Linux, Mac OSX, Clustering (nginx, mongrel, mongrel_cluster)
Agile, Scrum, TDD



    Web 2.0 Application

    DHL / Netempire AG

Scope of Work:
Software Development (Ruby on Rails)

Technologies/Methodologies used:
Ruby 1.8, Rails 2.0, mySQL 5, Prototype/Ajax, Linux, Mac OSX, TDD, RSpec



    BZL Track and Trace 3.0

    http://www.deutschepost.de
Deutsche Post World Net / Netempire AG

Scope of Work:
Software Development (Java) 

Technologies/Methodologies used:
JDK 5, J2EE (Servlets, JSP, EJB), BEA Weblogic 9.2 Cluster, Solaris, Oracle 10g, Struts2, XML, Webservices (Axis2), JPA with Hibernate, Spring 2 Framework, Javascript, Google Maps



    Townster

    http://www.townster.de
Netlabs GmbH

Web 2.0 / Social Local Search

Scope of Work:
Software Development & System Architecture / Scrum Master 

Technologies/Methodologies used:
Ruby 1.8, Rails 1.2, Google Maps, mySQL 5, Ajax, Debian Linux, Mac OSX, Clustering (nginx, mongrel, mongrel_cluster)
Agile, Scrum, TDD



    LLM.Uniiks.com / Uniiks Career Network

    http://llm.uniiks.com
forumtelemedia GmbH

Scope of Work:
Software Development (Ruby on Rails) / Scrum Consulting

Technologies/Methodologies used:
Ruby 1.8, Linux, Mac OSX, mySQL 5, Rails 1.2, Ajax, Agile, Scrum, TDD




    Online Credit System 3.0

    http://www.swkbank.de
SWK Bank / Netempire AG

Scope of Work:
Software Development (Java)

Technologies used:
JDK 5, J2EE (Servlets), Tomcat 5.5, Linux, PostgreSQL, Corba (Jacorb), XML, Webservices (Axis), Spring Framework (IOC, ORM, AOP), iBatis SQL-Maps, PDF Lib



    design:related

    http://www.designrelated.com
Design Related LLC

Web 2.0 / Social Networking

Technologies used:
Ruby 1.8, Linux, mySQL 5, Rails 1.2, Ajax, Clustering (nginx, mongrel, mongrel_cluster)



    Goodstock

    http://www.goodstock.de
Milk / Netempire AG

HDR-Image Online-Shop

Scope of Work:
Software Development (Ruby on Rails)

Technologies used:
Ruby 1.8, Linux, mySQL, Rails 1.0, Ajax



    BZL Track and Trace / SNV Customer Management

    Deutsche Post World Net / Netempire AG

Scope of Work:
Software Development (Java)

Technologies used:
J2EE (Servlets, JSP, EJB, JMS), BEA Weblogic Cluster, Solaris, Oracle, Struts, XML, Webservices, Tomcat, Hibernate, Spring Framework



    BZL Track and Trace Online Services / AMProxy

    Deutsche Post World Net / Netempire AG

BZL Track and Trace Online Services and Ordermanagement webservice

Scope of Work:
Technical project management and software development of webapplications and webservices (mostly J2EE) 

Technologies used:
J2EE (Servlets, JSP, EJB), BEA Weblogic Cluster, Solaris, Oracle, Struts, XML, Webservices



    Comin Extranet / CMS

    DaimlerChrysler / clicktivities AG

Development of framework-based java webapplications 

Technologies used:
J2EE (Servlets), IBM Websphere, Solaris, Oracle, Custom Java Framework, XML



    dotspowerpark

    dots'n daisies GmbH

Community and Portal Framework

Technologies used:
PHP, Linux, Oracle



    projektpilot

    dots'n daisies GmbH

Webbased Projectmanagement Tool

Technologies used:
PHP, Linux, mySQL



    CV:

4/2006

    IT Consultant / Senior Software Developer
Independent Contractor/Freelancer, Cologne, Germany

    Scope of work:
Development of webapplications and apps including consulting, development, deployment, scaling and optimization.




    5/2004 - 3/2006

    CTO
Netempire AG, Cologne, Germany

    Scope of work:
IT Consulting (J2EE), technical project management and complex software development. Coordination of the IT strategy of the company.




    1/2003 - 5/2004

    Technical Lead
Netempire AG, Cologne, Germany

    Scope of work:
Technical project management and software development of webapplications and webservices (mostly J2EE)




    8/2002 - 12/2002

    Senior Software Engineer
clicktivities AG, Duesseldorf, Germany

    Scope of work:
Development of Framework based Java Webapplications




    9/2000 - 7/2002

    Technical Lead
pawils GmbH / dots'n daisies GmbH, Essen, Germany

    Scope of work:
Leading role in design and development of a portal and community framework product




    5/2000 - 8/2000

    Senior Webdeveloper
more interactive GmbH, Duesseldorf, Germany
Scope of work:
Software development for portal web applications

Clients:
Sony Germany Microsites
WAP/Mobile Portal for c-com one
Norisbank
Internal Development

Technologies used:
PHP, ASP, Python/ZOPE, HTML


    1/1999 - 5/2000

    CTO/Founder
eins punkt null GmbH, Cologne, Germany

    Scope of work:
Business development and technical project management (including software development) for various clients mostly from the new economy

Clients:
Volvo GmbH, Germany
Steilman Corporate Fashion
Dorint Hotels
ebay/alando Germany
dooyoo.de
vaybee.de
urbia.de
dina6 AG
Norisbank for more-interactive
and more...

Technologies used:
PHP, JSP/Servlets, Linux, Oracle, mySQL, HTML




    1/1998 - 12/1998

    Online Producer/Webdeveloper (Self-Employed)
kiessler newmedia, Essen, Germany

    Scope of work:
Project management and coordination of the development of web-based applications

Clients:
Canon GmbH, Germany for BMZ!FCA/Profact
Dorint Hotels for rationet AG (Leverkusen, Germany)
Daihatsu Germany for rationet AG (Leverkusen/Germany)

Technologies used:
ASP, PHP, SQL Server, Linux, HTML




    2/1997 - 12/1998

    Online Producer/Webdeveloper
Self-Employed / Contractor, Essen, Germany

    Scope of work:
Design and development of web-based applications

Employers / Clients:
BBDO Interactive (Duesseldorf, Germany)
Nordis, Heidelbach & Sawatzki (Essen, Germany)
BMZ!FCA Duesseldorf/Profact (Essen, Germany)
agenda-media (Muenster, Germany)
BOV (Essen, Germany)
and more...

Technologies used:
ASP, PHP, SQL Server, Linux, HTML




    Education

12/2004

    Sun J2EE Web Component Developer Certification
Sun


    11/2004

    LPI (Linux) Level 1 Certification
Linux Professional Institute


    2004

    BA Computer Sciences
Fernuniversitaet Hagen, Hagen, Germany


    8/2003

    SCJP Certification / Sun Certified Java Programmer
Sun


    2001 - 2002

    BWL (Business)
Fernuniversitaet Hagen, Hagen, Germany


    1995 - 1996

    Sociology
University Bochum, Bochum, Germany


    1994

    Highschool Graduation (Abitur)
Gymnasium Essen-Werden (Highschool), Essen, Germany


    1991

    Highschool Graduation / Exchange student
Darrington Highschool, Darrington, WA, USA
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