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Horst SchmitzHS

Horst Schmitz

Senior Java/Spring Software Engineer

€1,000/day
Bern, CH
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Horst

Are you struggling with outdated systems, Excel chaos, or legacy IT landscapes that need modernization? I can help you with that - with 30 years of Java experience and an eye for pragmatic solutions instead of theoretical over-engineering.

MY SPECIALTIES:
- Legacy Modernization: I rescue old systems and migrate them to modern cloud architectures
- Requirements Engineering: I understand what your employees truly need - through on-site appointments and structured interviews
- AI-powered Development: Faster project implementation by combining experience + modern tools
- Long-term Availability: Even beyond retirement age - you get stability instead of job-hopping

TYPICAL PROJECTS I IMPLEMENT:
✓ Migration from Excel/Access/Visual Basic to professional web apps
✓ Integration of heterogeneous systems (ERP, CRM, Legacy)
✓ Digitization of government and administrative processes
✓ Development of highly available enterprise applications
✓ Cloud migration and modernization of existing software

INDUSTRY EXPERIENCE:
Public Administration, Public Safety (Police, Rescue Services), Transport & Logistics, Healthcare, Financial Services

TECH STACK:
Java, Spring Boot, Angular, PostgreSQL, Oracle, Docker, AWS, Kafka, WSO2, Microservices, REST APIs, Legacy Modernization

Do you need an experienced Senior Engineer who delivers instead of just talking? Let's talk.
  • German

    Native or bilingual

  • English

    Fluent

  • French

    Basic

Can work on-site
Bern (up to 50km)

Experience

  • Eigene Software-Firma,
    SELF-EMPLOYED SOFTWARE DEVELOPER
    SOFTWARE PUBLISHING
    January 2023 - Today (3 years and 7 months)
    Muri b. Bern, BE, Switzerland
    Development of an AI-powered Application Generator for the automatic creation of complete Spring Boot + Angular business applications from natural language requirements. The system uses Claude API for intelligent code generation and creates production-ready applications in minutes instead of weeks. Complete full-stack architecture including backend (Spring Boot), frontend (Angular), database (PostgreSQL), and automated deployment (Docker, Traefik). Infrastructure as Code with Terraform, hosted on Hetzner servers, including CI/CD pipeline. The project demonstrates modern AI integration in development processes and shows how AI tools can revolutionize productivity in software development.
    REST APIs Cloud Architecture Java/Spring Boot containerization-and-virtualization AI Integration
  • WISTAR
    Integration Engineer
    PUBLIC SECTOR
    November 2023 - September 2024 (10 months)
    Bern, Switzerland
    Analysis and realization of the digitization of government documents through configuration of the Docucom platform and Python scripting. Development of automation scripts for processing large volumes of documents from various government departments. Close collaboration with stakeholders to gather requirements and optimize digitization processes. Implementation of workflows for automatic classification, validation, and archiving of documents. Use of agile methods (Scrum) for iterative development and regular coordination with the client. The project contributed significantly to the modernization of governmental administrative processes.
    Python Docker Agile Document Management
  • AVINTIS SA
    Senior Digital-/Software-Engineer
    PUBLIC SECTOR
    December 2021 - June 2023 (1 year and 6 months)
    Bern, Switzerland
    Analysis and realization of integration projects based on the WSO2 platform, both on-site and directly at the customer's location. Development of complex integration solutions for connecting heterogeneous systems and data sources. Implementation of event-driven architectures with Apache Kafka for reliable message processing. Containerization of services with Docker and deployment on Cloud Foundry platforms. Creation of comprehensive development and architecture documentation. Close collaboration with clients for requirements analysis and phased implementation. Agile development in a Scrum team with regular releases and continuous integration.
    WSO2 Cloud Foundry Docker Agile containerization-and-virtualization

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Education

  • Diplom-Informatiker (Computer Science Degree)
    University of Koblenz
    1996
    Diplom-Informatiker

Skill set

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