Lenny Daume
Check fit
dtms GmbH Logo

dtms GmbH

Hamburg

SMS-Email Integration System

Software Developer Enterprise Java

June 2012 - July 2012
1 months
Full-time
Product work
Hamburg

Case context

Overview

The system connected SMS and email in both directions. Users could receive SMS messages as emails and automatically convert incoming emails back into SMS messages.

Built with Java 7 and Apache Wicket for the web interface, the system integrated JPA/Hibernate and Google Guice. Checkstyle, PMD, and Findbugs made code quality and maintainability visible.

Responsibility

Activities

  • Bidirectional Communication Development: SMS-to-Email and Email-to-SMS conversion, unified messaging platform
  • Web Interface Development: Apache Wicket implementation, user-friendly administration interface
  • Database Architecture: JPA/Hibernate integration, MySQL database design, message persistence
  • Quality Assurance: TestNG testing, Checkstyle code analysis, PMD static analysis, Findbugs bug detection
  • CI/CD Pipeline: Maven build automation, Jenkins continuous integration, automated quality validation

Operating mode

Methodology

  • Iterative Incremental Development: Step-by-step delivery with continuous quality validation
  • Quality-First Approach: Code analysis, automated testing, visible quality
  • Bidirectional Design: SMS-email integration and unified communication workflows
  • Enterprise Integration: JPA/Hibernate persistence, Google Guice dependency injection, Tomcat deployment

Technical context

Technology stack

The tools are not the point by themselves. What matters is which system layers had to work together.

8Areas
21Technologies

Backend

6
Java 7Apache WicketJPAHibernateGoogle GuiceEnterprise Java Development

Frontend

1
JavaScript

DevOps

2
TomcatMaven

Databases & Storage

1
MySQL

Messaging & Event Streaming

1
Message Processing

Tools

7
TestNGCheckstylePMDFindbugsEclipseJiraTwiki

CI/CD & Delivery Pipelines

2
JenkinsCI/CD Pipeline

Practices

1
Quality Assurance

Next step

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