Jamal Baydoun - Freelance Software Architect & Developer

Q: Where is Jamal based?

Jamal is based in Munich, Germany and can operate in on-site , hybrid , and remote work models.

Q: What languages does Jamal speak?

Jamal speaks the following languages: Arabic (Native), German (Native), English (Intermediate) .

Q: How many years of experience does Jamal have?

Jamal has at least 25 years of experience. During this time, Jamal has worked in at least 11 different roles and for 15 different companies . The average length of individual experience is 1 year and 3 months . Note that Jamal may not have shared all experience and actually has more experience.

Q: What is Jamal's latest experience?

Jamal's most recent position is Freelance Software Architect & Developer at IBM Deutschland GmbH / BWI GmbH .

Q: What companies has Jamal worked for in recent years?

In recent years, Jamal has worked for IBM Deutschland GmbH / BWI GmbH , Sulzer GmbH , Deutsche Bahn AG , Deutsche Bahn, and DB Zeitarbeit GmbH .

Q: Which industries is Jamal most experienced in?

Jamal is most experienced in industries like Information Technology , Transportation , and Tourism . Jamal also has some experience in Education , Aerospace and Defense , and Manufacturing .

Q: Which business areas is Jamal most experienced in?

Jamal is most experienced in business areas like Information Technology , Quality Assurance , and Product Development . Jamal also has some experience in Project Management , Customer Service , and Business Intelligence .

Q: Which industries has Jamal worked in recently?

Jamal has recently worked in industries like Transportation , Aerospace and Defense , and Information Technology .

Q: Which business areas has Jamal worked in recently?

Jamal has recently worked in business areas like Information Technology and Quality Assurance .

Recommended expert

Munich, Germany

Experience

Apr 2024 - Present

2 years

Hybrid

Freelance Software Architect & Developer

IBM Deutschland GmbH / BWI GmbH

Architecture, design and further development of a hybrid solution consisting of a Java backend with REST API and C# / WPF frontend
Development of secure, distributed functions for classified message processing, categorization and encryption
Integration of backend services with document management systems (DMS) for structured file storage
Planning, setup and continuous optimization of Azure DevOps pipelines for automated deployment and quality assurance of distributed applications in a security-critical environment
Technical coordination with Bundeswehr project managers and third-party providers of relevant software and interfaces, and documentation of the developed solutions

Jun 2023 - Mar 2024

10 months

Freelance Full Stack Developer

Sulzer GmbH

Analysis of existing business logic and development of a step-by-step migration plan
Design and implementation of modular Java-based microservices using Spring Boot and Spring Batch
Connecting to existing systems via REST APIs and modernizing data models
Designing test strategies, unit and integration tests
Testing, documentation and preparation for production release

Jun 2022 - May 2023

1 year

Freelance Full Stack Developer

Deutsche Bahn AG

Architecture, design and implementation of a robust REST API for mapping and distributing organizational structures
Data modeling for efficient management of complex organizational hierarchies and their validity periods
Integration of changes in corporate structures and expansion of API functionalities
Operation in containerized environments (Docker/Kubernetes) and setup and maintenance of CI/CD pipelines
Creating unit, integration and end-to-end tests
Technical documentation for long-term maintainability and handover to IT partners

Apr 2021 - May 2022

1 year 2 months

Freelance Full Stack Developer

Deutsche Bahn, DB Zeitarbeit GmbH

Designing and developing microservices for digitizing and automating applicant and supplier processes
Conducting architecture and code reviews, as well as performance optimizations
Testing, documentation and integration into the existing IT infrastructure

Jan 2021 - Mar 2021

3 months

Freelance Full Stack Developer

Deutsche Bahn, DB Zeitarbeit GmbH

Analysis and implementation of an interface for integrating Bundesdruckerei services
Development and configuration of communication modules
Creation of test scenarios and ensuring data integrity

Jul 2019 - Dec 2020

1 year 6 months

Freelance Software Engineer

Deutsche Bahn, DB Zeitarbeit GmbH

Conducted detailed requirements analysis in close collaboration with the business units
Designed 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 and adapted existing features
Created reports and analytical dashboards using MS Reporting Services
Performed integration and automated tests using tools like Selenium and Appium
Produced technical documentation to ensure traceability and maintainability

Jan 2019 - Jun 2019

6 months

Freelance Backend Developer

Deutsche Bahn, DB Zeitarbeit GmbH

Gathered and analyzed client requirements in close coordination with the Federal Employment Agency
Coordinated between the internal development team and contacts at the Employment Agency
Designed a scalable and maintainable interface architecture using modern frameworks
Modeled an efficient data model to support HRXML standards
Implemented the REST API using Java, Spring Boot, and JAXB
Integrated JSON and HRXML data formats to optimize data transfer
Persisted and processed data using Hibernate/JPA and MS SQL Server
Set up CI/CD pipelines with Jenkins for automated deployment and quality assurance
Utilized AWS services for hosting and scalability
Implemented and performed unit tests (JUnit) to ensure code quality
Created detailed technical documentation for smooth operation and future development

Jul 2017 - Dec 2018

1 year 6 months

Freelance Full Stack Web Developer

Deutsche Bahn, DB Zeitarbeit GmbH

Analyzed existing requirements and coordinated with the client to define new portal features
Enhanced and adapted the framework for electronic time tracking
Expanded the data model to support the job portal's specific requirements
Developed and implemented backend functions in Java using Spring Boot, Hibernate/JPA, and MS SQL Server
Implemented frontend functionality using HTML5, CSS, JavaScript, and jQuery
Conducted penetration tests to ensure platform security and stability
Set up automated builds and deployments with Jenkins and Maven
Automated tests with JUnit to ensure software quality
Produced technical documentation for software handover and operation

Jul 2016 - Jun 2017

1 year

Freelance Full Stack Software Engineer

Deutsche Bahn, Deutsche Bahn AG

Designed and developed a prototype for the online organizational chart
Visualized complex organizational structures with interactive graphics using D3.js
Implemented responsive design for optimal display on various devices
Created a scalable data model to represent organizational structures
Developed the backend with VB.Net to provide and process data
Integrated the MS SQL Server database for storing and managing organizational data
Built the frontend with HTML5, CSS, JavaScript, and jQuery
Created interactive diagrams and visualizations with D3.js
Wrote technical documentation for the prototype handover
Conducted usability tests to gather feedback

Jan 2015 - Jun 2016

1 year 6 months

Freelance Full Stack Web Developer

Deutsche Bahn, DB Zeitarbeit GmbH

Conducted requirements analysis in close consultation with stakeholders
Designed the software architecture for the portal and app solution based on a scalable and modular structure
Developed backend functions with Java and the Spring Framework to manage time tracking data
Created an efficient data model for storing and processing work time data
Integrated MS SQL Server and MS Reporting Services for database management and report generation
Developed a user-friendly web frontend using HTML5, CSS, JavaScript, and jQuery
Supported app development through API development and backend integration
Implemented unit and integration tests with JUnit, Jenkins, and Bash scripts
Produced reports and documentation for solution handover and use

Jan 2014 - Dec 2014

1 year

Freelance Software Developer

Deutsche Bahn, DB JobService GmbH

Created functional and technical concepts based on project requirements
Developed backend logic with VB.Net and Spring.Net to support job portal features
Integrated and extended data model for efficient storage and processing of job postings
Developed and implemented reporting features with MS Reporting Services
Ensured data integrity using MS SQL Server
Implemented unit tests with MS Unit Testing and Rhino Mocks
Collaborated with team on bug analysis and continuous software improvement

Jan 2011 - Dec 2013

3 years

Web Development / Technical Project Management

circIT GmbH & Co. KG

Developed and optimized web and mobile applications based on CoreMedia CMS
Implemented dynamic web features with JSP, AJAX, jQuery and Spring
Customized and configured CoreMedia 5.2, integrated new features
Provided second- and third-level support for existing applications
Performed deployments and configured and installed in production environments
Conducted requirements analysis and created technical concepts
Estimated effort and planned development tasks in close collaboration with stakeholders
Used agile methods like SCRUM
Implemented automated tests with JUnit and Selenium
Used Jenkins for continuous integration and delivery

Jan 2010 - Dec 2010

1 year

Software Development

Softvision GmbH

Developed an interface between the time tracking module and the workshop order management
Designed and implemented user profile and logbook modules
Developed J2EE applications with Rational Application Developer and Oracle
Built rich-client applications using Eclipse RCP with SWT and JFace
Installed, integrated and maintained an intranet website using Drupal and Alfresco
Participated in review and proposal calculation phases and created technical concepts and prototypes
Conducted software tests with JUnit and QFTest
Used SVN for version control and team collaboration

Dec 2007 - Dec 2009

2 years 1 month

Software Development

Achievo Inproware GmbH

Developed and implemented modules for bill of materials, workshop orders, inventory, loading points and master data management
Designed and developed a time tracking application with JBoss, Servlets, JSP, AJAX and JavaScript
Created user-friendly interfaces through rich-client programming with Eclipse RCP, SWT and JFace
Used Jython and Python for continuous integration and build automation
Developed and executed capture-replay tests with QFTest
Created and optimized reports with Crystal Reports
Developed with Rational Application Developer in a J2EE environment and integrated with IBM WebSphere and Oracle

Jan 2005 - Sep 2007

2 years 9 months

Software Development / Customer Support

GASP University Placement & Relocation Service

Designed and developed the official website of GASP and the GASP language institute
Implemented and integrated payment processing modules (PayPal, CashU cards)
Maintained direct customer contact with external partners to clarify technical requirements
Ensured smooth platform operation through maintenance and optimization

Feb 2003 - Jun 2003

5 months

Web Development

BOC, Beirut

Created a publishing system for the online presence of the Lebanese newspaper "Albalad"
Designed and implemented a workflow system to manage work processes
Developed using PHP, JavaScript, XSL, NewsML, and MySQL, integrating the Props CMS

Mar 2001 - Nov 2001

9 months

Web Development

BOC, Amman

Created and implemented the auction platform Mazadmaktoo (later Souq.com)
Enhanced and maintained the platform to optimize user experience
Designed and implemented an escrow system for secure transactions
Developed with Perl, CGI, and MySQL on Linux

May 2000 - May 2004

4 years 1 month

Web Development

Business Optimization Consultants

Designed and developed custom front-end and back-end solutions for various industries
Performed integrations and extensive testing for quality assurance
Example project: Developed the tourism website Syriatourism.org

Jan 2000 - May 2000

5 months

Software Development

Aleppo Zementprodukte

Developed a payroll system in compliance with local standards
Implemented billing logic, deduction accounts, and payment processes
Used Oracle SQL, PL/SQL, and Crystal Reports

Jan 2000 - May 2000

5 months

Software Development

Middle East Informatics

Implemented an ERP system for a financial services company in compliance with legal requirements
Developed the database using Oracle SQL, PL/SQL, and Oracle Developer 2000

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Transportation, Tourism, Education, Aerospace and Defense, and Manufacturing.

Information Technology

Transportation

Tourism

Education

Aerospace and Defense

Manufacturing

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Quality Assurance, Project Management, Product Development, Customer Service, and Business Intelligence.

Information Technology

Quality Assurance

Project Management

Product Development

Customer Service

Business Intelligence

Skills

Key Focus Areas: Enterprise Architectures (J2ee, Ejb, Rcp, Spring Boot, Restful Webservices, Wpf, .Net Core, Microservices, Docker), Cms (Coremedia, Wordpress, Drupal), Databases (Mssql Server, Oracle, Mysql), Requirements Analysis, Concept Development, Effort Estimation, Scrum
Programming Languages: Java, C#, Python, Javascript, Bash Script, Php, Perl, C++, Vb.net, Cobol, Jython
Frameworks & Technologies: Spring/spring Boot/spring Batch, .Net Core, Entity Framework, Wpf, Mvvm, Jsp, Jstl, Ajax, Jquery, Html/html5, Css, Webservices, Rest Api, Swagger/openapi, Json, Xml, Xsl, Xslt, Xpath, Jaxb, Lombok, Hibernate/jpa, Microservices, Docker, Kubernetes, Openshift, Helm, Amazon Aws, Azure Devops, Gitlab Ci/cd, Ci/cd Pipelines, Appium, Selenium, Qftest, Ms Reporting Services, Crystal Reports, Microsoft Test Tools, Junit, Mockito, Nsubstitute, Serilog, Log4j, Log4net, Unity, Spring .Net, Cobol
Tools: Eclipse, Intellij, Visual Studio, Vs Code, Spring Tool Suite, Ms Sql Management Studio, Sql Developer, Dbeaver, Postman, Jenkins, Team Foundation Server, Azure Devops, Git, Subversion, Cvs, Mercurial, Jira, Confluence, Kibana, Grafana, Prometheus, Whitesource, Mylyn
Databases & Database Technologies: Ms Sql Server, Oracle, Mysql, Ibm Db2, Sqlite, Mongodb, Postgresql, H2, Flyway
Methods: Oop, Design Patterns, Uml, Software Architecture, Test Driven Development (Tdd), Domain Driven Design (Ddd), Mvvm, Code Generation, Pair Programming, Scrum/kanban
Platforms & Servers: Tomcat, Jboss, Ibm Websphere Application Server, Jetty, Websphere As, Coremedia 5.2, Sharepoint, Apache Lucene, Apache Nutch, Apache Solr, Apache Velocity, Apache Kafka, Mssql Server
Industry Knowledge: Publishing, Automotive Industry, Online Retail, Pharmaceutical Industry, Tourism, It Industry, Financial Services, Civil Engineering, Textile Industry, Transportation/logistics, Public Sector, Education, Relocation Services
Soft Skills: Communication, Analytical Thinking, Self-discipline, Teamwork

Languages

Arabic

Native

German

Native

English

Intermediate

Education

Free University of Berlin

Master · Computer Science · Berlin, Germany

University of Aleppo

Electrical Engineering & Electronics, Computer Science · Aleppo, Syrian Arab Republic

Statistics

Experience

Total positions 20

Experience in Information Technology 9 y

Avg length 1 y 3 m

Longest experience 4 y

Expertise

Recent roles Freelance Software Architect & Developer, Freelance Full Stack Developer, Freelance Software Engineer

Main industries Information Technology, Transportation, Tourism

Main business areas Information Technology, Quality Assurance, Project Management

Qualifications

Highest degree Master

Profile

Created

May 2025

Last Update

July 2025

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Jamal based?

Jamal is based in Munich, Germany and can operate in on-site, hybrid, and remote work models.

What languages does Jamal speak?

Jamal speaks the following languages: Arabic (Native), German (Native), English (Intermediate).

How many years of experience does Jamal have?

Jamal has at least 25 years of experience. During this time, Jamal has worked in at least 11 different roles and for 15 different companies. The average length of individual experience is 1 year and 3 months. Note that Jamal may not have shared all experience and actually has more experience.

What roles would Jamal be best suited for?

Based on recent experience, Jamal would be well-suited for roles such as: Freelance Software Architect & Developer, Freelance Full Stack Developer, Freelance Software Engineer.

What is Jamal's latest experience?

Jamal's most recent position is Freelance Software Architect & Developer at IBM Deutschland GmbH / BWI GmbH.

What companies has Jamal worked for in recent years?

In recent years, Jamal has worked for IBM Deutschland GmbH / BWI GmbH, Sulzer GmbH, Deutsche Bahn AG, Deutsche Bahn, and DB Zeitarbeit GmbH.

Which industries is Jamal most experienced in?

Jamal is most experienced in industries like Information Technology, Transportation, and Tourism. Jamal also has some experience in Education, Aerospace and Defense, and Manufacturing.

Which business areas is Jamal most experienced in?

Jamal is most experienced in business areas like Information Technology, Quality Assurance, and Product Development. Jamal also has some experience in Project Management, Customer Service, and Business Intelligence.

Which industries has Jamal worked in recently?

Jamal has recently worked in industries like Transportation, Aerospace and Defense, and Information Technology.

Which business areas has Jamal worked in recently?

Jamal has recently worked in business areas like Information Technology and Quality Assurance.

What is Jamal's education?

Jamal holds a Master in Computer Science from Free University of Berlin.

What is the availability of Jamal?

Jamal is immediately available full-time for suitable projects.

What is the rate of Jamal?

Jamal's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.