Hire the best System Integrators in Germany matched in minutes from over 15.000 CVs with the power of AI.

PLANT-MY-TREE®-per-order

The application allows Shopify merchants to automate tree-planting orders for each incoming order. By integrating ecological contributions directly into the checkout process, manual work for tracking and billing reforestation initiatives is eliminated. The system increases transparency for end customers through real-time visualizations of the ecological impact directly in the storefront. The architecture is based on a modular monolith with Spring Boot in the backend and an integrated React app inside the Shopify admin area. The solution uses webhooks for event-driven capture of order data and integrates the ERP system weclapp for automated monthly invoicing. An app proxy mechanism provides dynamic statistics such as CO2 compensation and planted trees without any performance loss for the merchant shop.

Tasks:

• Design of the modular software architecture based on Spring Modulith to ensure high maintainability
• Development of the event-driven business logic for evaluating Shopify orders using webhooks
• Implementation of automated invoicing by connecting the weclapp REST API
• Building the frontend using React Router and Shopify App Bridge for native integration
• Design of the database model and implementation of the persistence layer with JPA/Hibernate and Prisma
• Integration of internationalization processes for global use in the frontend and email communication
• Automation of deployment processes using Docker and GitLab CI/CD

Project skills: Java, Spring Boot, Spring Security, Spring Modulith, Hibernate, JPA, REST API, PostgreSQL, Maven, Liquibase, React, TypeScript, React Router, Vite, Node.js, Prisma, Zod, Docker, Docker Compose, GitLab CI/CD, Shopify CLI, Shopify App Bridge, Polaris, weclapp, i18next, Lombok, Vitest

PHP and React redesign of a web-based ERP system.

• Development of the header and parts of the navigation
• Development of various modules in React, e.g. calendar, chat, and various tables

• Development of a retrofit concept, including qualification measures
• Development, installation and commissioning of the required hardware and software
• Development of a safety concept
• Execution and documentation of in-house verifications / qualification
• Initiation and implementation of measures in case of non-conformities
• Execution of CE conformity assessment procedures and CE marking

• Led the redesign of an iOS and Android B2B SaaS solution.
• Developed the product vision and strategy and designed the platform architecture.
• Worked closely with cross-functional teams to create a user-centered, forward-looking product.
• Identified market trends and analyzed feedback from stakeholders and customers.
• Developed a well-thought-out feature set.
• Led the product design and development process.
• Created Balsamiq wireframes.
• Conducted comprehensive market and competitor analysis.
• Defined the product roadmap and feature scope, managed and prioritized the backlog.
• Crafted and wrote epics and user stories.
• Briefed UI designers and reviewed and approved Figma layouts.

• installation and maintenance of communication systems on marine vessels
• advanced security checks
• building cluster environments using VMware ESX servers, DataCore, and Dell hardware

• Spearheaded the development and deployment of a Generative AI solution tailored for the automotive industry focusing on improving customer experience through AI-driven innovations.

• Conducted in-depth market research to understand unique challenges and opportunities within the automotive sector by analyzing industry trends, customer pain points, and competitive offerings to inform the product strategy.

• Formulated a strategic vision for the Generative AI solution targeting personalized customer experiences, aligned product vision with the company’s long-term goals and automotive market demands.

• Enhanced customer satisfaction by introducing personalized AI-driven features, achieving a 15% increase in customer engagement and loyalty.

• Attended and represented Audi AG on a group-wide level in workshops for AI strategy for customer experience.

• Leveraged knowledge of recurrent neural networks and transformer architecture.

• Utilized GPT-3 generative AI frameworks.

• Employed TensorFlow and PyTorch for machine learning.

• Used Tableau from Salesforce for data analysis and visualization.

• Served as solution manager for the Business Architecture team.

• Collaborated with business stakeholders within Audi OEM to gather requirements for CRM strategy including marketing department, CRM heads across countries, VW group brands and CARIAD SE.

• Represented Audi AG in CRM strategy workshops held in different countries.

• Discussed CRM strategy with head of CRM and Data based on workshop outcomes.

• Conducted business analysis on gathered market data to improve customer experience.

• Planned and launched marketing campaigns such as welcome mailing, license renewal reminders, Audi Progress Circle and Black Friday campaigns.

• Managed project budget.

• Acted as solution manager for the ONE.CRM team at CARIAD SE on loan from Audi AG.

• Collaborated with business owners of VW group brands to develop a central solution.

• Represented CARIAD SE in CRM strategy workshops in Spain, France and Italy.

• Discussed CRM strategy with head of CRM at CARIAD SE based on workshop outcomes.

• Conducted business analysis on market and brand data to improve customer experience.

• Planned and delivered campaign capabilities from template to brands such as welcome mailing for Audi AG, SEAT and SKODA.

• Managed project budget together with head of CRM.

• Developed a collaborative robot cell for automated handling and silicone dispensing of sensor components.
• Responsible for mechanical design, electronics, software integration and final CE certification.
• A custom-designed tool-changing system enabled automated switching between handling and dispensing tools.
• Developed a Django-based control console for industrial robots for process monitoring, combining a real-time dashboard (WebSocket, Chart.js) and a RESTful API (DRF).
• It allows asynchronous program execution, live data and camera stream visualization, robot control, as well as statistical analysis and documentation of process data with an interactive Bootstrap interface.
• Technologies used: Universal Robots (URScript), Arduino, OpenCV, Python, Django/Django REST Framework (DRF), Channels, SQLite, Chart.js, Bootstrap, JavaScript, HTML/CSS, AutoCAD, Autodesk Fusion 360, design & fabrication with aluminum profiles, laser parts, specialized sheet metal, RoboDK simulation

• AIX/Linux system administrator: deployment of LPARs (Logical Partitions) for SAP Kernel Development
• C/C++ SAP kernel development and integration to SAP HANA Database
• C/C++ programming and software integration, support for SAP kernel on AIX system; development and testing on SAP VDI
• Example: development of the ABEC Tool (AIX Build Environment Checker) to create SAP build environments for debugging process and benchmarking
• Benchmarking and test execution of SAP kernels (test from the communication to the SAP HANA Database and to SAP NetWeaver) on AIX
• Automate the SAP kernel build via Jenkins and benchmarking over crontab jobs
• New C/C++ compiler design and testing (based on Clang++ and LLVM)
• Customer ticket handling to resolve SAP kernel bugs and build failures
• SAP kernel development with Rust programming language, migrating some sub-kernel projects from C/C++ to Rust because of Rust's memory safety model, ownership system, and concurrency features
• Refactoring selected components in Rust and integrating them with existing C++ codebase via FFI

• Developing automated build and deployment processes for the exclusive front office systems
• Integrating the front office systems into the IT infrastructure
• Developing innovative, user-friendly sales software for financial advisors
• Ensuring quality and flexibility through automation and working with CI/CD
• Working according to DevOps principles
• Operating the software together as a team in the AWS cloud and Azure cloud
• Deploying software artifacts to testing and production environments
• Maintaining the test environments
• Performing error analysis and providing information for further root cause analysis
• Maintaining and supporting the build pipeline
• Supporting load testing
• Coordinating the batch execution schedule with batch automation
• Creating concepts to further develop the software packaging process
• Building and delivering components to partners
• Developing GitLab and Jenkins pipelines for building, deploying and integrating components
• Automating processes with Spring Boot applications with a GUI (Thymeleaf, Angular 19)
• Developing RESTful Spring Boot applications with Kotlin and Angular 19, JDBC and REST accesses, data exchange via SFTP, XML (JAXB)
• Designing components using Domain-Driven Design (DDD)
• Replacing cmd and bash scripts with Spring Boot applications with a GUI
• Replacing Java 8 applications with JSP by Spring Boot 3 applications (Thymeleaf, Angular)
• Implementing frontend and backend authentication via Keycloak
• Writing JUnit tests with Mockito
• Increasing code coverage for SonarQube analysis

Process optimization through repairs and fine adjustments on production equipment to maximize operational efficiency. Analysis of faults and documentation of production results to support continuous improvement.

• Development of a B2B shop based on Magento 2
• Plugin research and implementation, e.g. custom prices per customer
• Implementation of individual customizations
• Quality assurance
• Release management
• Collaboration with the marketing team
• Technologies: Magento 2, CSS, JavaScript, PHP, Docker, Git

• Lead high-performing teams to enhance enterprise system efficiencies, specializing in ERP and PIM systems within AWS, Azure, and proprietary datacenter infrastructures
• Ensure seamless alignment with stakeholder visions through strategic tech integration and dynamic leadership
• Build Generative AI solutions using platforms such as Azure/OpenAI, Google, Claude, and Ollama
• Develop intelligent system integrations and advanced data strategies leveraging AI and machine learning models
• Champion Agile methodologies (SCRUM) and mentor team in roles such as Team Lead, Scrum Master, and Product Owner
• Deliver robust, scalable solutions that power strategic business growth and operational excellence

• Focus: Developing a central platform to manage user flows and data between survey tools and marketing systems.
• Technology: Laravel middleware with Keycloak integration.

• SMS-Group full AV systems integration
• Invesco Germany full AV system integration
• SPITZKE SE Central Competence Center full AV system integration
• BP Germany upgraded AV system installation
• And more