You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Malt Strategy
Christian GappelCG

Christian Gappel

Fullstack Developer & DevOps Engineer/Consultant

€960/day
Landquart GR, CH
3-7 years
Kubernetes
Angular
C#
.NET

Average response time: 1 hour

About Christian

Ich bin ein erfahrener Softwareentwickler mit Schwerpunkt auf modernen End-to-End-Technologien im Web- und Cloud-Umfeld. Mein Fokus liegt auf der Entwicklung und Architektur anspruchsvoller Angular-Frontends sowie performanter .NET- und Java-Spring-Backends.

Ich begleite Projekte ganzheitlich – von der technischen Beratung und Architekturplanung über Implementierung, Testautomation und Deployment bis hin zu Betrieb und kontinuierlicher Weiterentwicklung.

Technische Schwerpunkte:

Frontend (Angular-first):
  • Angular (14–20), RxJS, NgRx, Signals
  • Architektur von wiederverwendbaren UI-Komponenten und Libraries
  • Reactive State Management und Performance-Tuning
  • Moderne UI/UX-Patterns, Accessibility, Responsive Design
  • Testautomation mit Jest, Jasmine und Cypress
Backend (.NET & Java):
  • .NET / ASP.NET Core: REST-APIs, GraphQL, Authentifizierung (JWT, Azure AD)
  • Java / Spring Boot: Microservices, API-Design, Security & Config Management
  • Domain-getriebene Architektur, modulare Services, Messaging (RabbitMQ, Kafka)
  • Clean Code, SOLID, CQRS, DDD
Cloud & DevOps:
  • Microsoft Azure: App Services, Key Vault, Cosmos DB, Service Bus, Functions
  • CI/CD mit Azure DevOps und GitHub Actions
  • Infrastructure as Code (Bicep, Terraform)
  • Container-Orchestrierung mit Docker und Kubernetes
  • Monitoring & Observability (Application Insights, Grafana, Prometheus)
Testing & Qualität:
  • Unit-, Integration- und E2E-Tests
  • Testautomation innerhalb der Build-Pipeline
  • Linter, Code Style Enforcement, Statische Analyse
Architektur & Consulting:* Technische Leitung und Architekturentscheidungen für komplexe Systeme
  • Einführung moderner Frontend-/Backend-Patterns
  • Refactoring und Modernisierung bestehender Monolithen zu Microservices
  • Coaching und Mentoring von Teams

  • German

    Native or bilingual

  • English

    Native or bilingual

  • Ukrainian

    Basic

  • French

    Basic

Can work on-site
Landquart GR (up to 50km)

Experience

  • Evulution AG
    Lead Full-Stack & DevOps Engineer (.NET, Angular)
    ENERGY AND UTILITIES
    September 2024 - Today (1 year and 9 months)
    Landquart GR, Switzerland
    • Led the refactoring of a 5+ year-old Angular codebase to align with modern standards (Angular 20)
    • Designed and implemented a modern, responsive redesign of the Angular frontend
    • Migrated native mobile applications to hybrid solutions using Capacitor
    • Transitioned on-premise customers to in-house SaaS model
    • Containerized and migrated the full application into a Kubernetes cluster
    • Implemented CI/CD pipelines for automated build, test, and deployment workflows
    • Configured centralized logging and monitoring using Seq for real-time observability
    • Managed container orchestration and cluster operations via Rancher
    • Integrated Keycloak for identity management and SSO across services
    • Automated background job processing and scheduling with Hangfire
    • Established and enforced software quality measures across all product layer
    • Directed the migration of a legacy product from Django to .NET/Angular
    • Technologies: .NET, Angular, TypeScript, Kubernetes, Docker, Seq, Rancher, Hangfire, Keycloak, Azure DevOps, Helm, Git
    .NET Angular Kubernetes DevOps
  • Festo Didactic SE & Co. KG
    Fullstack Developer (.NET & React)
    EDUCATION AND E-LEARNING
    October 2023 - August 2024 (10 months)
    Esslingen am Neckar, Germany
    • Backend migration from PHP to .NET
    • Revision of Point & Click to Drag & Drop interaction design
    • Frontend migration of Vanilla JS App to React
    • Established CI/CD pipelines for automated testing and deployment
    • Implemented API documentation and versioning with Swagger/OpenAPI
    • Set up containerized development and production environments with Docker
    • Configured environment-based build configurations and release management
    • Technologies: .NET, Swagger, React, TypeScript, SCSS, Docker, Git, Azure DevOps
    .NET React.js DevOps
  • Festo SE & Co. KG
    QA Automation & DevOps Engineer (.NET, Terraform, xUnit)
    MECHANICAL ENGINEERING
    October 2022 - September 2023 (11 months)
    Esslingen am Neckar, Germany
    • Project to improve software quality of mechanical system
    • Blackbox, component and functional testing of Windows applications
    • Provisioned test infrastructure using Terraform
    • Integrated automated test execution into CI/CD pipelines
    • Established quality gates and code coverage metrics
    • Built test reporting dashboards and quality KPIs with PowerBI
    • Configured test case management and traceability in Codebeamer
    • Implemented automated UI/E2E testing workflows with Leapwork
    • Technologies: .NET, xUnit, Codebeamer, Swagger, PowerBI, Leapwork, MS SQL Server, Azure DevOps, Git
    .NET xUnit DevOps Terraform
Check out Christian's experience

Recommendations

Be the first to recommend Christian

Help this freelancer shine by sharing your experience working together.

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Signup to reveal

Education

  • ABITUR
    Wernerheisenberg-Gymnasium
    ABITUR
  • BACHELOR OF SCIENCE
    Cooperative University Baden-Wuerttemberg
    BACHELOR OF SCIENCE

Skill set

Java
Linux
Spring boot
ASP.NET Core
React.js

Categories