Freelancer profile translated to English.
Back to original languageAbout Andreas
Fullstack Web Developer – Focus on .NET/Blazor | alternative React/Vue/Node (iXTS GmbH)
I support client projects as a fullstack developer with a focus on .NET & Blazor and complementary experience in React/Vue/Node. Since 2015, I have been developing web and business applications from conception through implementation to integration & operation – including CI/CD, Docker, and deployments (cloud/on-prem).
In recent years, my focus has been on Blazor/.NET Web API in an international environment (including medical technology) with ERP integration (SAP Business One), as well as the development of reusable Blazor components and application modules (e.g., scanner/fax integration). Additionally, I have supported projects in Vue/Node/Express and React/Node, including refactoring/restructuring, code review processes, and automated build/deployment pipelines (e.g., TeamCity).
What I typically deliver
Implementation/further development of modern web applications (SPA) including API integration (frontend)
Implementation of the API/server component (backend)
Development of reusable UI components & application modules
Refactoring/restructuring of existing applications + introduction of code reviews & standards / best practices
Stable operation through CI/CD, containerization, clean deployments
Hosting of implemented applications
Skills
Frontend
Blazor, component development, modular UI
React (Redux), Vue, TypeScript
HTML/CSS/JavaScript, UI frameworks (including Bootstrap), component-driven development
Backend
.NET Web API / .NET Core, REST, GraphQL
Node.js / Express
Databases: MSSQL, PostgreSQL, MySQL/MariaDB; ORM: Entity Framework
Integration/interfaces including ERP integrations (including SAP Business One)
DevOps / Operations
Git, Azure DevOps/TFS, Jenkins/TeamCity
Docker, IIS/NGINX, Windows/Linux
CI/CD, test/integration environments, automated releases
German
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- Hersteller für maßgefertige Prothesen und OrthesenLead Web Development Vue.js/Node.js/Express, DevOps TeamCity, Project RestructuringMEDICALDecember 2022 - May 2023 (5 months)Traunstein, GermanyRefactoring and expansion of a system to support the production process of orthosesAn existing web application to support the care of patients with custom orthoses was comprehensively refactored to ensure maintainability, scalability, and rollout to multiple locations.This included the introduction of professional development standards such as code conventions, pull requests, code reviews, clean code principles, and CI/CD processes. New test and integration environments replaced direct work on the production environment. A build and deployment process with TeamCity enabled automated deployment, versioning, and consistent delivery. Additionally, Webpack and Liquibase were integrated to optimize build and database processes.The security architecture was also enhanced through API authentication, parameter validation, prepared statements, and further security mechanisms against attacks.The result was a stable and secure application that ensures structured testing and reliable rollout across multiple branches.
- Führender Hersteller für orthopädische HilfsmittelWeb Development .NET Blazor Server / .NET Web APIMEDICALAugust 2022 - September 2025 (3 years and 1 month)Further development of a web frontend for simplified use of processes from SAP Business OneThe application serves to optimize processes at a leading manufacturer of prosthetics, orthoses, wheelchairs, and exoskeletons.The task included the further development of an internal website used as a frontend for therapists in the field of orthopedic technology. The web frontend supports therapists through a customized user interface in their business and patient care processes.The focus of the work was the technical conception and implementation of application modules, as well as the implementation of Blazor components. New modules were developed independently, such as a scanner and fax integration, and existing modules were further developed in close connection with the ERP system. Continuous coordination with internationally active stakeholders was also required for targeted implementation.
- Großer AutomobilherstellerFull-Stack Web Development Vue/.NET CoreAUTOMOBILEJuly 2021 - February 2022 (7 months)Involvement in the further development of a Single Page Application (SPA) with Vue frontend and .NET Core backend to support asset management in the automotive sector. The work environment was fully virtualized using Docker. Code reviews were conducted via Bitbucket and pull requests.
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Education
- B. Sc. Business InformaticsHochschule München2015