Jamal Baydoun
Freelance Software Architect
Experience
Apr 2023 - Present
2 years 4 months Germany
Freelance Software Architect
IBM Deutschland GmbH / BWI GmbH
- Analyzed requirements and designed solutions to extend Outlook functionalities according to customer requirements (German Armed Forces)
- Designed, implemented, and optimized add-ins for email classification, digital signing, and integration of Outlook objects into SharePoint
- Developed features for task management and object conversion
- Performed testing, documentation, and rollout support
- Technologies: C#, WinForms, WPF, .Net, MVVM, Outlook, Microsoft Add-ins, SharePoint, Azure DevOps, Jira, Git, Visual Studio
Jun 2022 - Mar 2023
10 months Germany
Freelance Backend Developer
Sulzer GmbH
- Conducted requirements analysis and developed a migration concept
- Designed and implemented modern microservices to replace a COBOL-based portal system for Audi AG
- Integrated new data models and optimized existing business processes
- Testing, documentation, and preparation for production release
- Technologies: Java, Spring Boot, Spring Batch, Microservices, Tomcat, Git, COBOL, IntelliJ, Hibernate/JPA, IBM DB2 Database, Jenkins, Confluence, Postman, DBeaver, Jira, Bitbucket, Log4j, Mockito, JUnit
Apr 2021 - May 2022
1 year 2 months Germany
Freelance Full Stack Developer
Deutsche Bahn, DB Zeitarbeit GmbH
- Designed and developed microservices to digitize and automate applicant and supplier processes
- Conducted architecture and code reviews as well as performance optimizations
- Testing, documentation, and integration into existing IT infrastructure
- Technologies: C#, .Net Core, Entity Framework, VS Code, GitLab CI/CD, OpenShift, Docker, Amazon AWS, Cake, REST, MSSQL Server, Postman, Serilog, NSubstitute, MS Test Tools, Python, Bash Script, Git, Scrum, Jira
Jan 2020 - Mar 2021
3 months Germany
Freelance Full Stack Developer
Deutsche Bahn, DB Zeitarbeit GmbH
- Analyzed and implemented an interface for integrating Federal Printing Office services
- Developed and configured communication modules
- Created test scenarios and ensured data integrity
- Technologies: C#, .Net Core, Entity Framework, VS Code, GitLab CI/CD, OpenShift, Docker, Amazon AWS, Cake, REST, MSSQL Server, Serilog, NSubstitute, MS Test Tools, Python, Bash Script, Git, Scrum, Jira
Jun 2020 - Present
5 years 2 months Germany
Freelance Full Stack Developer
Deutsche Bahn AG
- Architected, designed, and implemented REST APIs to map the corporate structure
- Optimized data models and integrated new functionalities
- Managed and operated in containerized environments using CI/CD pipelines
- Created tests and detailed documentation for long-term operation
- Technologies: Java, Spring Boot, Swagger/OpenAPI, GitLab CI/CD, Docker, OpenShift, Pipeship CI/CD, Eclipse Spring Tool Suite, AWS, Hibernate/JPA, MSSQL Server, Postman, Log4j, Mockito, JUnit, Git
Jul 2019 - Dec 2020
1 year 6 months Germany
Freelance Software Engineer
Deutsche Bahn, DB Zeitarbeit GmbH
- Performed detailed requirements analysis in close collaboration with business departments
- Created a scalable and maintainable software architecture based on .NET technologies
- Advised clients on optimizing system design and business processes
- Refactored and redesigned the existing data model to improve data integrity and efficiency
- Planned and executed data migration from legacy systems to the new ERP platform
- Developed and implemented new software modules, including adapting existing features
- Created reports and analytics dashboards using MS Reporting Services
- Conducted integration and automated tests with tools like Selenium and Appium
- Produced technical documentation
- Technologies: C#, WPF, MVVM, Entity Framework, Visual Studio, Unity, MSSQL Server, MS Reporting Services, Azure DevOps, CI Integration, Log4Net, NSubstitute, MS Test Tools, Selenium/Appium, Jira, Scrum
Jan 2019 - Jun 2019
6 months Germany
Freelance Backend Developer
Deutsche Bahn, DB Zeitarbeit GmbH
- Gathered and analyzed customer requirements in close coordination with the Federal Employment Agency
- Coordinated between the development team and Federal Employment Agency contacts
- Designed a scalable interface architecture based on modern frameworks
- Modeled an efficient data model for HR-XML standards
- Implemented the REST interface with Java, Spring Boot, and JAXB
- Integrated JSON and HR-XML data formats
- Persisted and processed data with Hibernate/JPA and MSSQL Server
- Set up CI/CD pipelines with Jenkins
- Utilized AWS services for hosting and scalability
- Implemented unit tests (JUnit)
- Produced technical documentation
- Technologies: Java, Spring Boot, JAXB, HR-XML, REST, JSON, Hibernate/JPA, Jenkins, Eclipse Spring Tool Suite, MSSQL Server, AWS, Log4j, Bash Script, Team Foundation Server, JUnit, Scrum
Jul 2017 - Dec 2019
1 year 6 months Germany
Freelance Full Stack Web Developer
Deutsche Bahn, DB Zeitarbeit GmbH
- Analyzed existing requirements and collaborated with the customer to define new portal features
- Enhanced and adapted the electronic time recording framework
- Extended the data model for job board requirements
- Developed and implemented backend functions in Java/Spring Boot/Hibernate/JPA/MSSQL Server
- Implemented frontend functionalities with HTML5, CSS, JavaScript, jQuery
- Performed penetration tests to ensure security and stability
- Built automated builds/deployments with Jenkins/Maven
- Automated tests with JUnit
- Produced technical documentation
- Technologies: Java, Spring Boot, JAXB, HR-XML, Eclipse Spring Tool Suite, MSSQL Server, Hibernate/JPA, Jenkins, Maven, Log4j, Apache Tomcat, Team Foundation Server, HTML5, CSS, JavaScript, jQuery, Bash Script, JUnit, Scrum
Jul 2016 - Jun 2017
1 year Germany
Freelance Full Stack Software Developer
Deutsche Bahn, Deutsche Bahn AG
- Designed and developed a prototype for the online organizational chart
- Visualized complex organizational structures using D3.js
- Implemented responsive design for various devices
- Created scalable data models
- Backend development with VB.Net
- Integrated MSSQL Server database
- Developed the frontend with HTML5, CSS, JavaScript, jQuery
- Created interactive diagrams/visualizations with D3.js
- Produced technical documentation
- Conducted usability tests to collect feedback
- Technologies: VB.Net, HTML5, CSS, JavaScript, jQuery, D3.js, Visual Studio, MSSQL Server, Team Foundation Server
Jan 2015 - Jun 2016
1 year 6 months Germany
Freelance Full Stack Web Developer
Deutsche Bahn, DB Zeitarbeit GmbH
- Conducted requirements analysis in coordination with stakeholders
- Created software architecture for portal and app solution
- Developed backend functions with Java/Spring
- Designed efficient data models
- Integrated MSSQL Server for database management and MS Reporting Services for reports
- Developed a web frontend with HTML5, CSS, JavaScript, jQuery
- Implemented responsive design
- Supported app development through API and backend integration
- Implemented unit and integration tests with JUnit, Jenkins, Bash scripts
- Produced reports and documentation
- Technologies: Java, Spring, Eclipse Spring Tool Suite, MSSQL Server, MS Reporting Services, Team Foundation Server, HTML5, CSS, JavaScript, jQuery, Hibernate/JPA, Jenkins, Ant, Maven, Log4j, Bash Script, JUnit, Scrum
Jan 2014 - Dec 2015
1 year Germany
Freelance Software Developer
Deutsche Bahn. DB JobService GmbH
- Created functional and technical concepts
- Developed backend logic with VB.Net and Spring.Net
- Integrated and extended the data model
- Developed and implemented reporting functionalities with MS Reporting Services
- Ensured data integrity with MSSQL Server
- Implemented unit tests using MS Unit Testing and Rhino Mocks
- Collaborated on bug analysis and improvements
- Technologies: VB.Net, Visual Studio, MSSQL Server, MS Reporting Services, Team Foundation Server, Spring.Net, MS Unit Testing, Rhino Mocks, Jira
Jan 2010 - Dec 2014
3 years Germany
Web Development, Technical Project Management
circIT GmbH & Co. KG
- Developed and optimized web and mobile applications based on CoreMedia CMS for Handelsblatt, Tagesspiegel, and Wirtschaftswoche
- Implemented dynamic web features with JSP, AJAX, jQuery, Spring
- Customized and configured CoreMedia 5.2, integrated new functions into the CMS
- Provided second- and third-level support for applications
- Performed deployments/configuration/installation in production environments
- Conducted requirements analyses and created technical concepts according to customer needs
- Estimated effort and planned development tasks
- Applied agile methods (Scrum)
- Implemented automated tests with JUnit and Selenium
- Continuous integration and delivery via Jenkins
- Technologies: Java, Spring, JSP, AJAX, jQuery, Tomcat 6, Maven, Mercurial, Apache Solr, IntelliJ IDEA, Oracle, CoreMedia 5.2, JUnit, Selenium, Jenkins, Scrum
Jan 2009 - Dec 2010
1 year Germany
Software Development
Softvision GmbH, Audi AG
- Developed an interface between the time tracking module and workshop order management
- Designed and implemented user profile/log modules
- Developed J2EE applications with Rational Application Developer (RAD) and Oracle
- Implemented rich client applications (Eclipse RCP, SWT, JFace)
- Installed, integrated, and maintained intranet website with Drupal and Alfresco
- Participated in reviews, cost estimates, concepts, and prototypes
- Performed software tests with JUnit and QFTest
- Used SVN for version control
- Technologies: Java, J2EE, Eclipse, RCP, SWT, RAD, IBM WebSphere, JUnit, SVN, PHP, Drupal, QFTest
Dec 2007 - Dec 2009
2 years 1 month Germany
Software Development
Achievo Inproware GmbH, Audi AG
- Developed and implemented workshop order, warehouse, loading station, and master data management modules
- Designed and developed a time tracking application with JBoss, Servlets, JSP, AJAX, JavaScript
- Created user interfaces with Eclipse RCP, SWT, JFace
- Automated scripting with Jython and Python
- Performed capture-replay tests with QFTest for quality assurance
- Generated reports with Crystal Reports
- Developed in a RAD J2EE environment (IBM WebSphere, Oracle)
- Technologies: Java, J2EE, Eclipse, RCP, SWT, RAD, IBM WebSphere, JUnit, Ant, CVS, QFTest, Jython, Python
Jan 2004 - Sep 2007
2 years 9 months Germany
Software Development, Customer Support
GASP University Placement & Relocation Service
- Contributed to design and development of the GASP and language institute websites
- Implemented and integrated payment modules (PayPal, CashU money cards)
- Maintained direct customer contact with external partners, especially in the Middle East
- Maintained and optimized system architecture and implemented new features
- Technologies: PHP, Postnuke, HTML, JavaScript, CSS, MySQL, Apache WebServer, Linux
Feb 2003 - Jun 2003
5 months Lebanon
Web Development
BOC
- Created a publishing system for the online presence of the newspaper "Albalad"
- Designed and implemented a workflow system to control and monitor editorial processes
- Web development with PHP, JavaScript, XSL, NewsML, MySQL
- Integrated Props CMS for content management support
- Technologies: PHP, HTML, CSS, JavaScript, MySQL, XSL, NewsML, Props CMS, Linux
Mar 2001 - Nov 2001
9 months Jordan
Web Development
BOC
- Created and implemented the auction platform Mazadmaktoob (later Souq.com)
- Enhanced and maintained the platform
- Designed and implemented an escrow system for secure transactions
- Web development with Perl, CGI, MySQL, Linux
- Technologies: Perl, HTML, CSS, JavaScript, MySQL, Linux
May 2000 - May 2004
4 years 1 month Syrian Arab Republic
Web Development
Business Optimization Consultants
- Designed and developed customized solutions for various industries (e-Government, e-Learning, pharmaceutical, textile, transportation, publishing)
- Integrated into existing systems and conducted extensive quality assurance tests
- Worked on specific applications for the mentioned industries
- Example: Tourism website Syriatourism.org to promote tourism in Syria
- Technologies: PHP, HTML, CSS, JavaScript, MySQL, Postnuke, osCommerce, Linux
Jan 1999 - May 2000
5 months Syrian Arab Republic
Software Development
Aleppo zur Herstellung von Zementprodukten
- Developed a payroll system for the employees of the cement factory
- Implemented payroll logic, deduction accounts, payment procedures
- Created a user-friendly interface
- Managed payroll data with Oracle SQL, PL/SQL, Oracle SQL*
- Used Crystal Reports for salary and tax reports
- Technologies: Visual Basic, Oracle SQL, PL/SQL, Oracle SQL*, Crystal Reports, Windows
Jan 1999 - May 2000
5 months Syrian Arab Republic
Software Development
Middle East Informatics
- Implemented an ERP system for a financial services company (compliant with government regulations)
- Developed a system to manage and optimize resources, finances, and scheduling
- Database development with Oracle SQL, PL/SQL, Oracle SQL*, Oracle Developer 2000 on Windows
Languages
Arabic
Native
German
Advanced
English
Intermediate
Education
Oct 2005 - Jun 2007
Free University of Berlin
Computer Science · Berlin, Germany
Oct 1994 - Jun 1999
University of Aleppo
Electrical Engineering & Electronics, Computer Science · Aleppo, Syrian Arab Republic
Certifications & licenses
Driver's License
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