Stephan Giuliari - Senior Backend Software Developer

Q: Where is Stephan based?

Stephan is based in Augsburg, Germany .

Q: What languages does Stephan speak?

Stephan speaks the following languages: German (Native), English (Advanced) .

Q: How many years of experience does Stephan have?

Stephan has at least 31 years of experience. During this time, Stephan has worked in at least 11 different roles and for 21 different companies . The average length of individual experience is 1 year and 5 months . Note that Stephan may not have shared all experience and actually has more experience.

Q: What is Stephan's latest experience?

Stephan's most recent position is Senior Backend Software Developer at Mercedes-Benz Tech Innovations .

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

In recent years, Stephan has worked for Mercedes-Benz Tech Innovations , Development of a FHIR Validator , Colexo , Mercedes-Benz , and Private Sales IT-Platform .

Q: Which industries is Stephan most experienced in?

Stephan is most experienced in industries like Information Technology , Healthcare , and Pharmaceutical . Stephan also has some experience in Media and Entertainment , Banking and Finance , and Automotive .

Q: Which business areas is Stephan most experienced in?

Stephan is most experienced in business areas like Information Technology , Product Development , and Project Management . Stephan also has some experience in Business Intelligence , Research and Development , and Finance .

Q: Which industries has Stephan worked in recently?

Stephan has recently worked in industries like Information Technology , Automotive , and Banking and Finance .

Q: Which business areas has Stephan worked in recently?

Stephan has recently worked in business areas like Information Technology , Product Development , and Project Management .

Recommended expert

Augsburg, Germany

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Experience

Apr 2025 - Present

1 year 4 months

Augsburg, Germany

Senior Backend Software Developer

Mercedes-Benz Tech Innovations

Further development and operation of a central backend service providing vehicle inventory for international Mercedes-Benz online stores
Enhancement of a vehicle reservation service as part of the checkout process
Design and implementation of a highly scalable end-to-end test architecture focused on maintainability, reusability, and a high number of automated test cases
Development of a multi-layered test infrastructure with a clear separation of test logic and access layers
Development of an initialization and caching architecture to significantly speed up local and CI/CD-based test runs
Development of an AI-driven review architecture for automated evaluation and quality assurance of end-to-end tests
Development of a dashboard to consolidate vehicle context across multiple backend systems, including AI-generated summaries and condensed case analyses
Integration and further development of connections to various reservation systems via Apache Kafka and REST
Design of new microservices and support in architectural decisions
Risk analysis and planning of microservice migrations
Technologies: Java, Spring, Spring Boot, Gradle, Maven, Apache Kafka, REST, OpenAPI, Swagger, GitHub, Confluence, CI/CD, Microservices, AI, LLMs

Apr 2024 - Jun 2025

1 year 3 months

Germany

Software Architect & Fullstack Software Developer

Development of a FHIR Validator

Developed a TypeScript-based FHIR validator (Fast Healthcare Interoperability Resources) for use in German clinics (successor to HL7)
Analyzed the existing Java HAPI-FHIR implementation
Built an interface to extract resource data models from FHIR structure definitions
Developed a module for automated generation of validator classes at the TypeScript level
Ran the solution on Deno and Node.js
Increased validation throughput compared to Java HAPI FHIR by a factor of 5-10
Conducted performance analyses & integrated NATS Jetstream for data storage
Technologies: TypeScript, JavaScript, Deno, Node.js, Linux, Docker, GitHub, WebSockets, Java, Spring Boot, HTML, NATS Jetstream, Apache Kafka, Microservices, Nexus, .NET, C#, SQL, Python

Feb 2024 - Jan 2026

2 years

Germany

Software Architect & Fullstack Software Developer

Colexo

Platform for brokering company acquisitions & sales, and due diligence checks
Built a document management system and data room to store structured company information (annual reports, key figures, etc.)
Used LLMs & AI to extract company data from documents and smartly query external systems as input aid under constant user supervision
Developed a form engine to configure complex questionnaires for gathering company data, including delegation and management processes for responses
Document management system
Live reporting of the company exposé
Technologies: Java, HTML, CSS, TypeScript, React, OAuth2, Ory, MariaDB, SQL, Spring Boot, Spring Web, WebSockets, ChatGPT, Python, LLaMA, Docker, Kubernetes, Linux, GitLab, Node.js, Microservices, Nexus, Groovy, PostgreSQL, Apache Kafka, Trello, C#, .NET, Go

Dec 2022 - Dec 2023

1 year 1 month

Germany

Release Manager (backend focus)

Mercedes-Benz

Central release management of all relevant components for the Hybris e-commerce solution
Release coordination of three ARTs in SAFe, coordinating with external component suppliers
Stabilized the release train through structured documentation and alignment with IT teams
Prepared a certification process to delegate continuous deployment to IT teams
Risk management to control the release trains
Central communication of release notes
Created a central release management dataset for release monitoring
Trained and guided IT teams for decentralized releases connected to the release train
Visualized and communicated risks to management
Coordinated with business teams to increase system stability during marketing campaigns
Technologies: Jira, Confluence, Java, Hybris, Java Spring, Kubernetes, ArgoCD, Nexus, TypeScript, JavaScript, Node.js, Microservices, Domain-Driven Design, Git, GitHub, GitHub Runner, Docker, Kafka, MySQL, Angular, Vue, .NET, Spring Security

Aug 2021 - Nov 2022

1 year 4 months

Germany

Technical Integration Manager / Solution Architect

Mercedes-Benz

New Car Online Sales based on Hybris e-commerce
Integration into the overseas system landscape
Definition and alignment of end-to-end interfaces
Requirements management between market and IT teams
Configuration of market systems
Bug analysis & management between market and IT teams
End-to-end analysis to align cross-system processes
Management of cut-over planning for business go-lives
Solution based on Adobe Experience Manager, Hybris, EDA, and Kafka
Technologies: Jira, Confluence, Java, Hybris, Java Spring, Kubernetes, ArgoCD, Nexus, TypeScript, JavaScript, Node.js, Microservices, Domain-Driven Design, Git, GitHub, GitHub Runner, Docker, Kafka, MySQL, Angular, Vue, Spring Security

Jan 2021 - Aug 2021

8 months

Germany

Head of IT / Solution Architect

Private Sales IT-Platform

Conducting a Swiss investor private sale
Leading 14 developers
Interactive forecast tool for value development
Implementation of a back office for order processing
Contract processing via Adobe E-Sign
Definition of all related business processes
Management and implementation of regulatory framework
Solution based on PHP Symfony, PostgreSQL and Typescript
User management with Keycloak
Operating the solution on Amazon Web Services
Technologies: PHP, Typescript, Java, Java Spring, Kubernetes, Nexus, Node.js, Microservices, Git, Docker, Nginx, Postgres, React

Aug 2019 - Jan 2021

1 year 6 months

Germany

Head of IT / Solution Architect

Payment Platform and Loyalty System Integration

Further development of the global search
Leading 14 developers
DSL for language-based graphical interface description
Definition of all related business processes (P2P payment, checkout, top-up, payout)
Management and implementation of regulatory framework
Backend: Spring MVC with REST API, testing with JUnit / Selenium
Framework for integrated E2E/module tests based on domain concept and DSL for interface description
Building Kafka microservices with Java and Typescript
Operating the solution on Amazon Web Services
Technologies: Jira, Confluence, Java, Java Spring, Kafka, Typescript, Node.js, Nexus, Microservices, Domain Driven Design, Git, Docker, Nginx, React, Angular

Oct 2018 - Jul 2019

10 months

Germany

Senior Fullstack Software Developer

Payback Deutschland

Further development of the global search
Personalization
Modernization of integration testing
Further development of testing strategy
Frontend: JQuery with migration to Webcomponents, testing with Karma
Backend: Spring MVC with REST API, testing with JUnit / Selenium
Docker build images
Maintenance & support of frontend & backend
Technologies: Java, Javascript, Typescript, Spring, Spring MVC, Spring Security

Sep 2018 - Mar 2019

7 months

Germany

Senior Fullstack Software Developer

Rental Workshop Management Console

Implementation of the backend in Spring (Spring MVC, Spring Boot, Spring Security) and MySQL
Data communication with Redux
Integration of the backend as Redux middleware (Websocket-Redux messaging)
Implementation of the frontend in ReactJS
Docker build images (Raspberry Pi deployment optional)
Technologies: Spring Web, Spring Boot, Spring JPA, React, Node.js, Websockets, REST, Java, Typescript, Javascript, Webstorm, Eclipse, IntelliJ, Git, NPM, Windows, Linux, .NET

Nov 2016 - Oct 2018

2 years

Germany

Senior Web Software Developer

Frontend Hybris-Shop-System

Extension and refactoring of an existing frontend
Integration and extension of existing REST APIs
Mobile-first FE for more than 10 brands (approx. 15 agencies)
Responsive, Atomic Design based on Terrific.js
Implementation and extension of content elements (sliders, videos, etc.), wizards (technician online booking, etc.) and product catalogs (lists, detail views, etc.)
FE support: detailed bug analyses, FE bug fixing
Agency support: assisting agencies with SASS/CSS adjustments
RTL adjustments for Arabic countries
Technologies: Hybris Platform, Node.js, Webpack, Javascript, Java, Typescript, Webstorm, Eclipse, IntelliJ, Git, NPM, Maven, Windows, Linux, Java Spring, Spring MVC, Spring Security

Dec 2015 - Nov 2016

1 year

Germany

Software Architect / Software Developer

DAS Management Software Migration

Porting the PHP management software of a digital antenna system to Node.js
Software analysis of a stack made of PHP, SQLite, C++ and Bash (about 250k LoC)
Defining the target architecture: layer definitions, choosing technologies for each layer
Defining a platform-independent protocol for communication between management software and hardware (IHAL) to improve communication across developer teams
Reference implementation in C++
Replacing an MVCVC concept with standard JS technologies (WebSockets, jQuery widgets, Express.js)
Consolidating divergent GUI concepts into a single GUI blueprint
Technologies: Node.js, jQuery, Bootstrap, Selenium.js, Mocha, Assert, REST, JavaScript, Bash, C++, SQLite3, Express.js, Eclipse, PHPStorm, WebStorm, CLion, SVN, NPM, Git, Grunt, Gulp, GoogleTest, Linux

Jul 2012 - Dec 2015

3 years 6 months

Germany

Senior Software Developer / Software Architect

Bosch Siemens Home Appliances (B/S/H/)

Extending and integrating a shop application into the system landscape of one of the largest home appliance manufacturers
Integrating SAP and other backend systems for service booking, a CMS platform for maintaining content, spare parts search, and separate marketing and shop catalogs
Application serves about 120 shop instances per brand, with a total of five brands
Database size over 50GB, 15 development servers, 8 staging servers, 8 production servers across Europe
Technologies: Hybris platform, Java, Groovy, ImpEx, HEDL, MySQL, Spring MVC, Spring Security, Avalon, Batik, FOP, JAI, AOP, ASM, Apache Commons, Mockito, EHCache, Jackson, JAXB, Joda, JMail, Lucene, log4j, slf4j, Java Servlets, Velocity, POI, Quartz, Hibernate, Hibernate Validator, WSDL4J, Xerces, Eclipse, IntelliJ, Mercurial, Ant, Maven, JRebel, Tomcat, JUnit, Gradle, Windows, Linux

Jun 2011 - Jul 2012

1 year 2 months

Germany

Software Architect and Developer

Real Estate Fund Risk Assessment

Developing a new web application for risk assessment of closed-end real estate funds
Technologies: Java, JEE, HTML, CSS, JavaScript, Oracle, Log4J, Play Framework, Hibernate, REST API, Eclipse, SVN, Ant, Maven, JUnit, Tomcat, Windows

Jan 2011 - May 2011

5 months

Germany

Software Architect and Developer

Webshop Extension

Further developing a shop software based on Hybris
The shop system is one of the largest in Europe
Technologies: Java, JEE, HTML, CSS, JavaScript, Oracle, Log4J, JSP EL, Struts, Apache Tiles, Hybris API, EJB, Spring, REST, Eclipse, SVN, Ant, Maven, JUnit, Tomcat, Hybris, Windows

Sep 2010 - Jan 2011

5 months

Germany

Software Architect and Developer

AAB – TINA

Developing a commission calculation tool for various commission types for a bank
Technologies: Java, JEE, VBA, Oracle, Log4J, Eclipse, SVN, Ant, JUnit, Windows

Jan 2010 - Sep 2010

9 months

Germany

Software architect and developer

Mobile Endgeräte Medizin Profiler|RES

Developed a system for global application monitoring, including standalone operation in regions without Internet (Africa, China)
Technologies: Java, HTML, CSS, JavaScript, MySQL, Oracle, Antlr, Servlets, JSP, JDBC, Apache Batik, Apache Commons, Apache FOP, Apache, Log4j, Apache POI, JFreeChart, HSqlDB, JavaSoft Activation, JavaSoft Crypto, EJB, JavaSoft Mail, WebWindow, Jetty, JUnit, iText, SuperWaba, JavaSoft Swing, Eclipse SWT, Log4J, Eclipse, CVS, Tomcat, Antono Pen, Linux

Nov 2008 - Mar 2009

5 months

Germany

Software architect and developer

Senaca.ch

Developed the website senaca.ch
Technologies: C#, ASP.NET, HTML, JavaScript, CSS, MS SQL Server, Microsoft Visual Studio, SVN, Windows

Jan 2008 - Jan 2012

4 years 1 month

Germany

Software architect and developer

Virtuelle Community Kunstprojekt

Developed an infrastructure and frontend for a community platform where users can design their own space, similar to Second Life
Technologies: Flex, Flash, Java, JEE, JSP, PHP, MySQL, PayPal, Facebook API, various REST APIs, Flash Builder, Eclipse, BlazeDS, Hibernate, Windows, C#, .NET

Aug 2004 - Jan 2023

18 years 6 months

Germany

Software architect and developer

IT Dienstleister DSL Creator

Built an infrastructure based on Eclipse for the DSL Creator following the "Convention over Configuration" principle
Developed an automated build system for fully automated creation, testing, and distribution of software packages (e.g. Profiler|RES)
Integrated XML descriptions for packages and build targets
The code generator became part of an Eclipse-based development infrastructure
Developed languages: Reddo, Lacuna, Arbor, Banta, Carpor, Emptor
Technologies: Java, ANTLR, XML, Eclipse SWT, JDT, JFace, Core Runtime, Workbench, JCIFS, JSSH, JUnit, Apache Commons, Log4J, JEE, Oracle, MySQL, HSQLDB, JDBC, Apache Axis, Batik, BCL, Xalan, EJB, JAXRPC, JavaSoft Mail, SOAP, SSE, WebWindow, Jetty, Mozilla XPCom, iText, Samba, RMI, Eclipse, SVN, Linux, Windows

Apr 2002 - Dec 2010

8 years 9 months

Germany

Software architect and developer

Klinisches Dokumentationssystem Profiler|RES

Implemented a system for online & offline documentation of patient data in clinical trials (2.5M LoC)
Focused on extreme longevity by separating technology & logic and ensuring auditable data integrity
Integrated future technologies without compromising validation logic & data semantics
Technologies: Java, HTML, CSS, JavaScript, WML, XML, JEE, MySQL, Oracle, HSQLDB, Antlr, Servlets, JSP, JDBC, Apache Axis, Batik, Commons, FOPS, Log4J, POI, Xalan, JFreeChart, JCQ2K, JMML, J2SSH, EJB, JAXRPC, Mail, SOAP, SSE, WebWindow, Jetty, JUnit, Mozilla XPCom, iText, Samba JCIFS, SuperWaba, RMI, Eclipse, CVS, SVN, Tomcat, Linux

Mar 1996 - Nov 2002

6 years 9 months

Germany

Software architect and developer

Multimedia games for trade fairs

Creation of driving simulators with live-action footage by connecting driving cabins (Formula 1 cars, Fendt tractors) to a multimedia system
Development of a custom media format and player to manipulate video speed, framing and direction
Development of multimedia quiz shows on large screens
Development of a greenscreen printer with an adaptive algorithm for automated integration of visitors into images under challenging lighting conditions
Integration with various peripherals (e.g., microcontrollers)
Technologies: C, C++, Java, Toolbook, Flash, DirectX, ActiveMovie, Microsoft Visual Studio, Macromedia Director, Adobe Flash, CVS, Windows

Jan 1994 - Feb 1995

1 year 2 months

Germany

Software architect and developer

Bell UH-1D Circuit Simulator

Development of a training unit for technical training on the Bell UH-1D
Visualization of active circuits on five screens with touchscreen configuration
Real-time rendering of up to 2000 diagram elements and 180 measurement points (response time under 0.6 seconds)
Training sessions for troubleshooting by activating error sources in actual and simulated circuits
Technologies: C, C++, Toolbook, Toolbook-Script, Microsoft Visual Studio, CVS, Windows

Industry Experience

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

Experienced in Information Technology, Healthcare, Pharmaceutical, Media and Entertainment, Banking and Finance, and Automotive.

Information Technology

Healthcare

Pharmaceutical

Media and Entertainment

Banking and Finance

Automotive

Business Area Experience

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

Experienced in Information Technology, Product Development, Project Management, Business Intelligence, Finance, and Research and Development.

Information Technology

Product Development

Project Management

Business Intelligence

Finance

Research and Development

Summary

Giuliari has over 30 years of experience in IT management, software architecture, and software development. He has built deep knowledge in software development and architecture and also gained experience leading development teams. He quickly dives into new topics and masters them in a very short time.

Skills

Focus Areas

Software Architect (Enterprise & Solution Level)
Senior Backend Developer (Java, Spring, Spring Boot, Jee, Junit, Node.Js)
Senior Frontend Developer (Html, Css, Typescript, React)
Architecture Of Controllable Ai-Driven Enterprise Systems
E-Commerce And Enterprise Platforms

Knowledge And Skills

Operating Systems

Windows
Linux
Mac Os

Programming Languages

Typescript (Focus)
Java (Focus)
React
Vue
Angular
Html
Css
Javascript
Php
Antlr
C
C++
Bash
Approx. 12 Custom Languages Developed For Various Projects

Databases

Mysql
Mariadb
Oracle
Mongodb
Ms Sql Server
Postgresql
Sqlite
Ms Access
Odbc
Jdbc

Development Libraries

Apache Kafka
Hybris
Spring Mvc
Spring Boot
Spring Security
Node.Js
Express.Js
Redux
Jquery
Hibernate
Spring Jpa
Spring Web
Oauth 2
Ory
Keycloak
Jsp
Junit
Qt
Chatgpt
Openai

Operations

Amazon Web Services
Kubernetes
Docker

Development Environments And Tools

Intellij
Vscode
Eclipse
Microsoft Visual Studio
Source Code Repositories: Git, Mercurial, Svn, Cvs
Build Tools: Maven, Gradle, Ant, Webpack
Platforms: Hybris, Spring, Spring Mvc, Reddo (In-House)
Continuous Integration: Jenkins, Bamboo, Gitlab, Teamcity
Test Tools: Junit, Mockito, Selenium
Documentation: Jira, Confluence, Clickup, Miro, Trello

Further Knowledge

Development Of Distributed, Highly Available Web Applications In Regulated And Non-Regulated Areas, As Well As Enterprise Shop Systems
Spring Frameworks: Spring Mvc, Spring Boot, Spring Websockets, Spring Data, Spring Batch, Spring Kafka
Web (Html5, Css, Javascript, Ecmascript5, Typescript, Php, Jsp, React, Vue, Angular)
Development In The Banking Sector (Banks, Real Estate)
Development Of Cross-Platform Class Libraries
Development Of Medical Information Portals
Electrical Engineering: Low-Level Programming Of Embedded Processors, Can Bus
Media Systems: Programming Of Media Apis (Directx, Custom Video Formats, Sound & Midi)
Mobile Devices (Android, Java, Windows Mobile, Iphone)
Clinical Documentation In Oncology, Pulmonology And Dental Implants (Cdisc, Hl7, Dicom, Etc.)

Languages

German

Native

English

Advanced

Education

Augsburg University of Applied Sciences

Diploma in Computer Science (FH) · Computer Science

Statistics

Experience

Total positions 22

Experience in Information Technology 25 y

Avg length 2 y 7 m

Longest experience 18 y 5 m

Global Experience

Countries worked in 1 (Germany)

Primary country Germany

Expertise

Recent roles Senior Backend Software Developer, Software Architect & Fullstack Software Developer, Release Manager (backend focus)

Main industries Information Technology, Healthcare, Pharmaceutical

Main business areas Information Technology, Product Development, Project Management

Qualifications

Highest degree Master

Profile

Created

June 2026

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Frequently asked questions

Have questions? Find more information here.

Where is Stephan based?

Stephan is based in Augsburg, Germany.

What languages does Stephan speak?

Stephan speaks the following languages: German (Native), English (Advanced).

How many years of experience does Stephan have?

Stephan has at least 31 years of experience. During this time, Stephan has worked in at least 11 different roles and for 21 different companies. The average length of individual experience is 1 year and 5 months. Note that Stephan may not have shared all experience and actually has more experience.

What roles would Stephan be best suited for?

Based on recent experience, Stephan would be well-suited for roles such as: Senior Backend Software Developer, Software Architect & Fullstack Software Developer, Release Manager (backend focus).

What is Stephan's latest experience?

Stephan's most recent position is Senior Backend Software Developer at Mercedes-Benz Tech Innovations.

What companies has Stephan worked for in recent years?

In recent years, Stephan has worked for Mercedes-Benz Tech Innovations, Development of a FHIR Validator, Colexo, Mercedes-Benz, and Private Sales IT-Platform.

Which industries is Stephan most experienced in?

Stephan is most experienced in industries like Information Technology, Healthcare, and Pharmaceutical. Stephan also has some experience in Media and Entertainment, Banking and Finance, and Automotive.

Which business areas is Stephan most experienced in?

Stephan is most experienced in business areas like Information Technology, Product Development, and Project Management. Stephan also has some experience in Business Intelligence, Research and Development, and Finance.

Which industries has Stephan worked in recently?

Stephan has recently worked in industries like Information Technology, Automotive, and Banking and Finance.

Which business areas has Stephan worked in recently?

Stephan has recently worked in business areas like Information Technology, Product Development, and Project Management.

What is Stephan's education?

Stephan holds a Master in Computer Science from Augsburg University of Applied Sciences.

What is the availability of Stephan?

Stephan is immediately available full-time for suitable projects.

What is the rate of Stephan?

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