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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