PDF Experts in Dusseldorf

• Development of a pilot system to control and monitor multiple GoPro cameras
• Implementation of start, stop, status, media, download, and diagnostic functions via COHN endpoints
• Realization of camera detection, single and group control, as well as stable session/keep-alive logic
• Setup of a download pipeline with queue, retry handling, and temporary files
• Consistent session, folder, and file naming for multi-camera recordings
• Integration of provisioning, certificates, and network operations

PLANT-MY-TREE®-per-order

The application enables Shopify merchants to automatically place tree-planting orders for every incoming order. By integrating ecological contributions directly into the purchase process, the manual effort 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 to capture order data in an event-driven way and integrates the weclapp ERP system 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 via 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 25, 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

• Iterated an MVP for an autonomous vehicle platform in close collaboration with potential customers
• Conducted comprehensive market research, persona analysis and validation tests

• Various programming tasks as specified
• Work carried out from home office, meetings/tasks via email, phone and Microsoft Teams
• Version control via GIT
• Implementation with RDI, FreeSQL SQL
• Extension of automatic test environment creation as specified - adding automatic transfer of existing iSeries users and preparation as well as anonymization of test data
• Creation of trigger and service programs in SQLRPGLE, FreeRPG, ILE RPG and CLLE
• Development and implementation of the CallKredite project including additional extensions for other departments
• Conversion of RPG to Free-RPG and SQL as well as extension of existing modules as specified
• Migration to a new banking release
• Support for specialist segment / OIV

• Visualization, search, and maintenance of various types of master data, providing them via a REST API, and implementing a variety of import and export formats.

• Implementation, architecture, project management.

• Technologies and tools: Angular (Signals, Signal Store, swagger-codegen, standalone components), Java, PostgreSQL, ActiveMQ, JavaScript, Spring Boot (Spring Core, Spring MVC, Spring Data/JPA via Hibernate, Spring Security, Spring Modulith), JUnit, Flyway, QueryDSL, GraphQL, REST API, Node, npm, Maven, SonarQube, GitLab CI/CD pipelines, Docker, Nexus, OpenAPI + Swagger UI, Keycloak, OAuth2, OpenID Connect, IntelliJ IDEA, Jira, Confluence.

• Confident use of Autodesk Inventor 2010

• Revision and update of existing designs

• Converting existing 2D drawings into 3D models with drawing derivation

• Redesign and further development of existing 3D designs

• New 3D design development

• Creating drawings, lists, and plans

• Confident use of Productstream Professional

• Data preparation and import into PSP from external design offices

• Supporting the system administrator

• Creating templates for 3D Inventor and Excel (parts lists)

• Exporting data from Inventor as PDF, DXF, XLS

• Preparing training materials

• Training design staff and project managers on introducing 3D design and using Productstream Professional and Inventor 2010

• Supporting project managers with technical problem-solving

• Supporting production planning

• Supporting the special machine construction department