2019: Startup: Human Resources (https://app.comatch.com)

COMATCH App

Description:
In-house web app for all business processes of a management consultant company. The app includes the external website and modules for clients, consultants and different company administrators.
Technology:

JavaScript, Meteor, MongoDB

2017: Startup: Web App (https://app.stori.me)

Stori.me

Description:
User can write Stori(es) and share them with selected contacts. The MVP has extended image editing features, runs on iOS and in the browser.
Technology:

JavaScript, Meteor, Cordova, React, ViewModel, MongoDB, S3

2016: Startup: Teaching (https://tutor.chat)

Tutor.chat, Homework.chat

Description:
Tutors are able to give chat based private lessons on the subjects maths, physics, chemistry and biology. The clients connect with iOS or Android devices. I started working on the back end for the mobile applications and the tutor front end, as the company grew took over the role of a CTO hiring and coordinating a team in 9 different countries travelling between Barcelona and Asunción.
Technology:

CoffeeScript, Meteor, MongoDB, Redis, Git, Google Analytics, IBM Watson, Segment, Mixpanel, Sendgrid, Twilio

2016: Startup: Human Resources (https://workgrades.com)

WorkGrades

Description:
WorkGrades takes the guesswork out of checking references. We’ve made it easy for candidates to reach out to past employers, verify their work history, and rack up recommendations.
Technology:

CoffeeScript, Meteor, MongoDB, Git, Google Analytics, Hotjar

2016: Startup: Car Sales (YC14) (https://carlypso.com)

Sales Booster

Description:
  • Salespersons find used cars somewhere in the USA. Salespersons save searches and receive an email once new results arrive. Salespersons choose listings and send them per email or text message to potential buyers.
  • Developed from prototype to production and still do the hosting
Technology:

CoffeeScript, Meteor, MongoDB, Git, Trello, Slack

2016: Startup: Marketing (https://tributr.com)

Tributr

Description:
  • Marketing application based on surveys.
  • Developing new features and maintained the site for a San Francisco Start Up.
Technology:

JavaScript, Meteor, MongoDB, Ontraport, Infusionsoft, Git, Trello, Slack

2015: Startup: Teaching (http://onemath-preview.herokuapp.com/)

+1 Math

Description:
  • Game to teach math
  • Students: Do your exams or homework or just play against the machine or other students, win coins, trade coins for prizes.
  • Teachers: Define questions and exams. assign them to classes or individual students, use extensive reporting features.
Technology:

JavaScript, Meteor, MongoDB, Jasmine, Git, Trello, Slack

2015: Logistics (http://rsrvtr.meteor.com/)

Rsrvtr

Description:
Customer-Notification-System: Question the reservation system of a limousine service through a SOAP API, correct time zone data and display them. <br>User: Send or schedule text messages (sms) to clients. <br>Administrator: Define text message templates
Technology:

CoffeeScript, Meteor, MongoDB, moment.js, Git, SOAP

2015: FOSS (https://github.com/softwarerero/protothril)

Protothril

Description:
Application framework. A little bit like Meteor but based on Mithril and Elasticsearch.
Technology:

CoffeeScript, Cordova, Elasticsearch, Express, Git, Gulp, Node

2019: FOSS (https://atmospherejs.com/softwarerero/accounts-t9n)

meteor-accounts-t9n

Description:
Beside a solid translation engine it comes with more than 30 translations for Meteor standard modules, it has over 50 contributors and more than 6.000 downloads on Atmosphere
Technology:

CoffeeScript, Meteor, Git

2014: Farming

Ganagro

Description:
  • Planing and Administration for Cattle Farming
  • Acquisition, Sales, Breeding, Insemination, Vaccination, Diet, Statistics, Rainfall, Bookkeeping
  • Financing, Tenancy of Animals and Ground
Technology:

CoffeeScript, Meteor, Mercurial, MongoDB

2014: Finance

Prestafin

Description:
The client offers financing of consumer credits to retail stores. The retailer uses his computer or mobile phone to consult the credit line of the customer which gets reported back to him after a short research by the credit agents on his display and by email. The retailer then is able to generate and print a contract that the customer signs. The systems offers various statistics and reports.
Technology:

CoffeeScript, Meteor, Git, MongoDB

2013: Finance

Cambios Chaco

Description:
A leading paraguayan money exchange company grows quickly (about 400 employees now and growing by 30%/year) and wants a system check for all its information systems and an actionable catalog of projects to execute to guarantee this growth rate. Side goals are to asure that the systems can be extended to integrate franchising partners in the future and to extend the business model to neighbour countries.
Technology:

Groovy, Eclipse, Libnotify, Gradle, MySQL, Restlet, Centos, MCDM (Decision Making)

2013: Software Startup

Search-Engine for Clasified Ads in Paraguay (http://agrupados.biz/)

Description:
  • Search-Engine for Clasified Ads in Paraguay (http://agrupados.biz/) - (Scala/Lucene)
  • Search-Engine for paraguayan tax numbers (http://ruc.sun.com.py/) - (Scala/Xitrum/Lucene/Elasticsearch)
  • Web Shops Platform (http://shops.com.py/) - Example Shop, (Java/MongoDB)
  • Clasified Ads (http://ads.sun.com.py/) - (Java/H2)
  • Several Play Framework Modules (https://bitbucket.org/softwarerero)
Technology:

Play-Framework, Eclipse, Java, JavaScript, Elasticsearch, Lucene, Scala, jQuery, d3.js, Mercurial, MongoDB, Ubuntu, Redmine, Selenium, Xitrum, Bootstrap, Scalate, Jade, Markdown, Lighttpd, reactive.coffee

2013: Finance

Consulting and development for a money exchange chain store company

Description:
A leading paraguayan money exchange company grows quickly (about 320 employees now, > 400 estimated at the end of 2013) and wants a system check for all its information systems and an actionable catalog of projects to execute to guarantee this growth rate. Side goals are to asure that the systems can be extended to integrate franchising partners in the future and to extend the business model to neighbor countries.
Technology:

Groovy, MySQL, Eclipse, Libnotify, Gradle, Restlet, Centos

2013: Product Development

Product family of little internet applications based on the Play Framework

Description:
  • Search-Engine for Classified Ads in Paraguay: agrupados.biz - (Scala/Lucene)
  • Platform for Web Shops: shops.com.py - (Java/MongoDB)
  • RUC data search: ruc.sun.com.py - (Scala/MongoDB)
  • Classified Ads: ads.parapapi.com - (Java/H2)
  • Several Play Framework Modules: bitbucket.org/parapapi
Technology:

Play-Framework, Eclipse, Java, JavaScript, Scala, jQuery, Mercurial, MongoDB, Ubuntu, Redmine, Lucene

2011: Consulting

Bookkeeping / Credit-Management

Description:
  • Bookkeeping Software for the Paraguayan market
  • Credit management for an investment company
Technology:

Java, Groovy, Grails, JQuery, JasperReports, Linux, H2, IDEA, Mercurial

2010: Finance

Credit Management

Description:
Administration of standard business transaction for a Paraguayan cooperative working in the credit area.
Technology:

Groovy, Grails, Ubuntu, H2, IDEA, Mercurial, jQuery

2009: Health

Internet-CMS

Description:
Web content management system with one redactional backend for a bunch of German health magazines: wortundbildverlag.de
Technology:

Groovy, Grails, JQuery, LINUX, MySQL, IDEA, Hudson, Maven, Jira, Greenhopper

2009: Health

MDD-Framework

Description:
This framework for model driven development will be loosely coupled to its front and backend technologies. Services as well as UI or storages are provided as PlugIns. The first version will provide PlugIns for a Swing frontend and an H2 backend. The idea is to integrate several lessons learned by other frameworks like Griffon, Grails, AribaWeb, JMatter, Woko and OpenXava.
Technology:

Groovy, Swing, GlazedLists, JGoody, MyDoggy, Eclipse, Maven, Metawidget, Hudson, Miglayout, Nexus, H2, VisualVM

2009: Consulting

Applications for the Paraguayan Market

Description:
  • Prototype for export of Confluence Wiki to static HTML
  • Grails-Application for a statistic basket of goods.
  • Application for architects in Paraguay and Northern-Argentina
  • Griffon-Application for Credit Management
  • Several CSS-Designs
Technology:

Gant, Groovy, Grails, Liferay, JQuery, Mercurial, Spring, Struts, IDEA, Confluence, Debian, Jetty, JFreeChart, AribaWeb, Hibernate, Griffon, JasperReports

2008: Health

Electronic Health Record

Description:
  • Health insurance companies and other organizations host the software to offer their customers to
  • manage their health data over the internet and share it with doctors, hospitals, fitness centers or
  • medical devices
  • Teams in different countries develop different parts or the software that have to be configured, build
  • and translated. Hereby apply criteria like development environments, test environments, production
  • environments, internationalization, localization, branding, customer adaptions and versions
Technology:

Maven, Ant/Gant, Groovy, Java, JUnit, Selenium, Subversion, AspectJ, Spring, IDEA, Eclipse, CruiseControl, Continuum, Hudson, Confluence, JIRA, VMWare, SLES, Apache, Tomcat

2007: Engineering

Visualization of Motor Controls

Description:
  • The software visualizes the steering of gas motors for energy production.
  • The visualization component resides in cabinets nearby the motors but can as well be accessed via
  • networks
  • A successful product for one customer shall be flexibilized regarding several customer style guides,
  • motor control types, network types and protocols
Technology:

Java, Groovy, XML, Swing, Spring, JUnit, Maven, Subversion, AspectJ, Eclipse, EnterpriseArchitect, Daisy CMS, Edgewall Trac, TestTrackPro, AutomationSphere, Fit

2005: Health

Information System for Pediatric Rheumatology

Description:
  • Logging of all medical information during a patient visit
  • Gathering of data of the diagnostic findings, the therapy progression, the laboratory values and other research relevant parameters
  • Aggregation und computation of data for the governmental purposes and scores
  • Generation of a discharge letter from the data of anamnesis, examination and diagnostic
  • Retrieval of data for scientific researches and multi center studies
Technology:

Java, Subversion, JUnit, JReport, XML, XSL, Hibernate, Hsqldb, Swing

2005: Automotive

Daimler Automotive Information System

Description:
  • Information system for the automotive aftersales market including parts, damage keys, repair methods, repair times for all model lines of all brands of the DaimlerChrysler group
  • Data are imported from various legacy systems
  • Editors and authors are supported in the automotive documentation process by a definable workflow
  • Released content can be published in various legacy systems, publication systems and dealer management systems
Technology:

Sun Solaris, J2EE, WebSphere, JBoss, Eclipse, SWT, SoAP

2004: Telco

Fault Management

Description:
  • Network management software for the German and Vietnamese DSL–Backbone.
  • System events are accepted in SMTP or CORBA TMF format, after filtering them they are converted in a proprietary XML format and propagated to the managing system.
Technology:

Sun Solaris, JBuilder, J2EE, CORBA, JacoRB, JUnit, JBoss, SMTP, XSLT

2003: Energy Sector

Performance Analysis and optimization of a J2EE–Application

Description:
The customer has modified a standard J2EE chat system to allow his top management to hold a moderated conversation with the employees.
Technology:

OpenSTA, Java, Tomcat, SAP Application Server, Solaris

2003: Administration

Statistic System

Description:
  • Web–based gathering of statistical data for Kindergardens
  • Statistical analysis and reporting
  • Elaborated security concept
Technology:

Win2000, SuSE LINUX 7.2, Apache, Tomcat, Java, JSP, Servlets, Struts, FoP, Log4J, Ant, Xalan, ObjectBridge, MySQL, NetBeans, WSAD, ArgoUML, Cactus, JUnit

2001: Industrie

B2B–Portal and Content Management System

Description:
Development of an Internet–Portal–Solution concerning e–mail.
Technology:

Win2000, SuSE LINUX 7.2, Apache, Tomcat, JetSpeed, OpenCms, Java, JSP, Servlets

2001: Finance

Software Architecture for a Multi–Channel Finance Platform

Description:
Introduction of a technical multi channel platform in a Finance environment. A middleware approach used to transparently integrate several sales channels with backend systems. Establishing a soft migration from Siemens Kordoba to SAB FSBP and SAP ACM.
Technology:

Windows 2000, Sun Solaris, Rational Rose, Bea WebLogic, Bea ProcessIntegrator, JBoss, JUnit, Xerces, JConnect (Siemens UTM), OpenLDAP, JBuilder, J2EE, EJB, JNDI, JMS, JAXP

2001: University

Distributed and secure software development

Description:
Scientific Study
Technology:

LINUX, Samba, CVS, MySQL, openSSL, Apache, PHP, Java, NetBeans, Argo/UML, JUnit

2000: Finance

Credit Finance Framework

Description:
Smalltalk–Framework for domain specific solutions in a consumer Finance and leasing application.
Technology:

Win/NT, OS/2, Sun Solaris, Smalltalk, DB2, Informix, Eurolease

1999: Logistics

Audit and optimization of a Software Development Process

Description:
Analysis and optimization of a software development process for a logistics software company.
Technology:

Win/NT, HP/UX, PL/SQL, Java, JavaCC

1998: Insurance

Insurance Framework

Description:
Redesign of a Smalltalk Framework for company wide application development in a fortune 500 company.
Technology:

Win/NT, OS/2, Smalltalk

1997: Finance

Credit Risc Management System

Description:
Consulting in a definition phase of an application for managing credit risks.
Technology:

Win/NT, ARIS Toolset, S–Designer, Smalltalk

1997: Logistics

Java Study

Description:
Study about the suitability of Java as a strategic language for corporation wide development.
Technology:

Java, OS/2, Intersolv ODBC/JDBC Win/NT, HP/UX

1997: Finance

Stock Market Framework and Applications

Description:
  • product family of applications to support investment Finance consultants
  • the system is still in production at about 400 Finance institutes
Technology:

OS/2 Warp, C++, DB2, DB2/MVS, DDCS, OCL, UICL, CCL, STL

1996: Administration

Military Training Area Administration System

Description:
Training area management system for the german military.
Technology:

OS/2 Warp, Smalltalk, ADW

1995: Finance

Building Society Administration System

Description:
Prototype for a building society saving application as pre sales support for selling the FROCS framework and a consulting team.
Technology:

OS/2 Warp 3.0, C++, FRoCS, DB2

1995: Finance

Real Estate Sales System

Description:
Realty sales system for the realty branch of a Finance.
Technology:

OS/2 2.1, IBM C/Set ++ 2.1, FRoCS, UICL, CCL, DB2, DB2/MVS

1995: IT–Consulting

object–Relational Mapping Framework

Description:
  • Client/server framework for mapping of relational data to objects.
  • The project is based upon a 30 person year smalltalk framework. To make a quick but solid port to C++ the design should stay unaltered. This was reached in porting the smalltalk base clas
Technology:

OS/2 2.1, Smalltalk, IBM C/Set ++ 2.1, UICL, DB2

1996: Architecture

office and project administration system für architects and engineers

Description:
Project and office administration system for architects. Joint development of 5 architecture companies. Conceived as a standard software.
Technology:

MS Windows, Gupta SQL Windows, C++, Gupta SQLBase, MS office

1994: Music

Several little standard business apps

Description:
Several little applications for contact management, music school administration and sales automation.
Technology:

MS DOS, MS Windows, dBase III+, MS FoxPro, Visual Basic, MS office

1994: Industrie

Electronic Finance Module

Description:
Software module for automatic data exchange with Finances for a craftsmen software system.
Technology:

MS–DoS, C++, Turbo Vision, Paradox

1993: Industrie

Sales Information System

Description:
Sales force directing and management information system.
Technology:

MS DOS, Clipper

1993: Administration

Land Register Administration System

Description:
Land register administration system for a communal land register department.
Technology:

MS Windows, IBM OS/2, Smalltalk, MS SQL Server, Oracle, MS LAN Server/Requester, OS/2 LAN Server

1993: Administration

Workflow System

Description:
office automation system with document and workflow management.
Technology:

MS Windows, IBM OS/2, Smalltalk, MS SQL Server, Oracle, MS LAN Server/Requester, OS/2 LAN Server

1992: Industrie

Sales Information System

Description:
Sales force steering and management information system.
Technology:

MS DOS, Clipper