Professional DevSecOps Engineer | Backend Development | .NET, PostgreSQL | CI/CD, Docker
Aktualisiert am 02.12.2025
Profil
Freiberufler / Selbstständiger
Remote-Arbeit
Verfügbar ab: 02.12.2025
Verfügbar zu: 100%
davon vor Ort: 100%
CI/CD
ASP.NET
.NET
Liquibase
Docker
C#
TypeScript
GitLab
PostgreSQL
Entity Framework
SonarQube
ELK
Rancher
Vault
German
Native
English
Full Professional Prof.

Einsatzorte

Einsatzorte

Wiesbaden (+50km)
Deutschland
möglich

Projekte

Projekte

1 Monat
2025-11 - heute

On-Prem to Azure Cloud Migration of a Microservice Application

Professional DevSecOps Engineer Microsoft Azure Infrastructure as Code (IaC) OpenTofu ...
Professional DevSecOps Engineer

Migration of an On-Prem Microservice Application to Microsoft

  • Executed the end-to-end migration of an on-prem microservice application to Microsoft Azure, including one database and four microservices (two .NET Web APIs, two Python services)
  • Configured the required Azure cloud infrastructure, including IAM, RBAC, network configuration and integration of Keycloak as the central identity provider.
  • Implemented observability using the Elastic Stack (APM, Logging, Dashboards) to monitor service health, performance, and cross-service interactions.
  • Integrated secret and credential management via HashiCorp Vault and aligned the application with cloud security best practices.
  • Performed the database migration and adapted schemas, permissions, and sconnection handling for the Azure environment.
  • Converted manual configuration steps into Infrastructure as Code (IaC) to enable reproducible and automated deployments.
  • Set up and validated staging and production environments with CI/CD integration, ensuring reliable deployments and consistent operation across all microservices.
  • Created and maintained technical documentation and ensured structured knowledge transfer to the team and stakeholders.

Microsoft Azure Infrastructure as Code (IaC) OpenTofu Terraform Keycloak Elastic Stack (APM Logging Dashboards) HashiCorp Vault Azure IAM / RBAC Azure Storage Azure Networking Azure App Services / Container Services Python .NET CI/CD SCRUM
Insurance company
10 Monate
2025-02 - 2025-11

Storing and providing AI-driven contract evaluation results in the active reinsurance domain

DevSecOps Engineer for development of .NET-based Web APIs ASP.NET Core Entity Framework Core PostgreSQL ...
DevSecOps Engineer for development of .NET-based Web APIs

.NET-based Web APIs with PostgreSQL to store and provide AI-driven contract evaluation results in the active reinsurance domain.

  • Designed and developed multiple .NET-based Web APIs with PostgreSQL to store and provide AI-driven contract evaluation results in the active reinsurance domain.
  • Designed the PostgreSQL database schema and implemented automated database versioning and deployments using Liquibase.
  • Set up and maintained GitLab repositories and CI/CD pipelines to ensure consistent build, test, and deployment workflows.
  • Containerized backend services with Docker for reliable and reproducible runtime environments.
  • Worked in an enterprise DevSecOps environment utilizing Elastic Stack for observability, SonarQube for code quality assurance, and secure secrets management with HashiCorp Vault and CyberArk.
  • Implemented backend services based on Clean Architecture with CQRS, Repository Pattern, Domain-Driven Design (DDD), Unit of Work, and Entity Framework Core to ensure scalability, maintainability, and testability.

ASP.NET Core Entity Framework Core PostgreSQL Liquibase GitLab CI/CD Docker Rancher (Kubernetes-based environment) Elastic Stack HashiCorp Vault CyberArk SonarQube Clean Architecture CQRS DDD Repository Pattern Unit of Work xUnit SCRUM
Insurance company, Germany
1 Jahr 6 Monate
2023-09 - 2025-02

platform for managing contracts in active reinsurance within the credit business

DevSecOps Engineer for full stack application solution ASP.NET Core Entity Framework Core PostgreSQL ...
DevSecOps Engineer for full stack application solution

Implementation of a platform for managing contracts in active reinsurance within the credit business.

  • Development of an enterprise full-stack platform for managing reinsurance contracts in the credit business domain.
  • Responsible for backend development, database versioning and application containerization with Docker to ensure secure and consistent software delivery.
  • Worked in an enterprise DevSecOps environment using Rancher for managing Kubernetes-based deployments, Elastic Stack for observability, and SonarQube for continuous code quality monitoring and Azure DevOps for Repositories, Project Management and CI/CD Pipelines.
  • Participated in secure credential and secret management processes leveraging HashiCorp Vault and CyberArk.
  • Applied Clean Architecture principles with CQRS, Repository Pattern and Unit of Work to ensure maintainability, scalability and testability.
  • Contributed to frontend integration with Angular and PrimeNG, applying component design patterns for a clean UI architecture and reliable software delivery aligned with DevSecOps standards.

ASP.NET Core Entity Framework Core PostgreSQL Liquibase Docker Redis Rancher (Kubernetes-based environment) Azure DevOps (Repositories & Project Management & CI/CD) Elastic Stack HashiCorp Vault CyberArk SonarQube Clean Architecture CQRS Repository Pattern Unit of Work xUnit Angular PrimeNG SCRUM
Insurance company, Germany

Aus- und Weiterbildung

Aus- und Weiterbildung

Applied Computer Science

Bachelor of Science (B.Sc.)


Certification

  • Azure

Kompetenzen

Kompetenzen

Top-Skills

CI/CD ASP.NET .NET Liquibase Docker C# TypeScript GitLab PostgreSQL Entity Framework SonarQube ELK Rancher Vault

Produkte / Standards / Erfahrungen / Methoden

About me

  • I?m a .NET Backend Engineer experienced in developing secure, scalable, and maintainable enterprise applications within DevSecOps environments.
  • I focus on building robust backend systems using .NET, Entity Framework Core, PostgreSQL, and Liquibase, applying Clean Architecture, CQRS, and DDD to ensure performance and long-term stability. 
  • My experience includes containerization with Docker, deployment workflows using GitLab CI/CD and Rancher-managed environments, and the use of enterprise-grade tools such as SonarQube, Elastic Stack, HashiCorp Vault, and CyberArk for quality, observability, and security.
  • Having worked in regulated industries like finance and insurance, I emphasize reliability, compliance, and automation in every solution I deliver.


Attributes

  • highly outcome-oriented
  • very reliable
  • strong communication
  • highly committed and hardworking


Tech Stack

Backend

  • .NET (C#) 
  • ASP.NET Core 
  • Entity Framework Core 
  • PostgreSQL 
  • Redis (Caching) 
  • Liquibase (Database Migrations)
  • Clean Architecture 
  • CQRS 
  • Unit of Work 
  • DDD (Domain-Driven Design) 
  • RESTful API Design 
  • Unit Testing 
  • Performance Optimization


DevOps

  • Docker (Containerization) 
  • GitLab CI/CD 
  • Azure DevOps (Repositories & Project Management) 
  • Rancher (Kubernetes-based Environment) 
  • Elastic Stack (Elasticsearch, APM, Logging) 
  • SonarQube (Code Quality) 
  • HashiCorp Vault & CyberArk (Secrets Management) 
  • Version Control (Git)
  • Infrastructure as Code (IaC) 
  • Microsoft Azure (IAM/RBAC, Networking, Cloud Resources)

Einsatzorte

Einsatzorte

Wiesbaden (+50km)
Deutschland
möglich

Projekte

Projekte

1 Monat
2025-11 - heute

On-Prem to Azure Cloud Migration of a Microservice Application

Professional DevSecOps Engineer Microsoft Azure Infrastructure as Code (IaC) OpenTofu ...
Professional DevSecOps Engineer

Migration of an On-Prem Microservice Application to Microsoft

  • Executed the end-to-end migration of an on-prem microservice application to Microsoft Azure, including one database and four microservices (two .NET Web APIs, two Python services)
  • Configured the required Azure cloud infrastructure, including IAM, RBAC, network configuration and integration of Keycloak as the central identity provider.
  • Implemented observability using the Elastic Stack (APM, Logging, Dashboards) to monitor service health, performance, and cross-service interactions.
  • Integrated secret and credential management via HashiCorp Vault and aligned the application with cloud security best practices.
  • Performed the database migration and adapted schemas, permissions, and sconnection handling for the Azure environment.
  • Converted manual configuration steps into Infrastructure as Code (IaC) to enable reproducible and automated deployments.
  • Set up and validated staging and production environments with CI/CD integration, ensuring reliable deployments and consistent operation across all microservices.
  • Created and maintained technical documentation and ensured structured knowledge transfer to the team and stakeholders.

Microsoft Azure Infrastructure as Code (IaC) OpenTofu Terraform Keycloak Elastic Stack (APM Logging Dashboards) HashiCorp Vault Azure IAM / RBAC Azure Storage Azure Networking Azure App Services / Container Services Python .NET CI/CD SCRUM
Insurance company
10 Monate
2025-02 - 2025-11

Storing and providing AI-driven contract evaluation results in the active reinsurance domain

DevSecOps Engineer for development of .NET-based Web APIs ASP.NET Core Entity Framework Core PostgreSQL ...
DevSecOps Engineer for development of .NET-based Web APIs

.NET-based Web APIs with PostgreSQL to store and provide AI-driven contract evaluation results in the active reinsurance domain.

  • Designed and developed multiple .NET-based Web APIs with PostgreSQL to store and provide AI-driven contract evaluation results in the active reinsurance domain.
  • Designed the PostgreSQL database schema and implemented automated database versioning and deployments using Liquibase.
  • Set up and maintained GitLab repositories and CI/CD pipelines to ensure consistent build, test, and deployment workflows.
  • Containerized backend services with Docker for reliable and reproducible runtime environments.
  • Worked in an enterprise DevSecOps environment utilizing Elastic Stack for observability, SonarQube for code quality assurance, and secure secrets management with HashiCorp Vault and CyberArk.
  • Implemented backend services based on Clean Architecture with CQRS, Repository Pattern, Domain-Driven Design (DDD), Unit of Work, and Entity Framework Core to ensure scalability, maintainability, and testability.

ASP.NET Core Entity Framework Core PostgreSQL Liquibase GitLab CI/CD Docker Rancher (Kubernetes-based environment) Elastic Stack HashiCorp Vault CyberArk SonarQube Clean Architecture CQRS DDD Repository Pattern Unit of Work xUnit SCRUM
Insurance company, Germany
1 Jahr 6 Monate
2023-09 - 2025-02

platform for managing contracts in active reinsurance within the credit business

DevSecOps Engineer for full stack application solution ASP.NET Core Entity Framework Core PostgreSQL ...
DevSecOps Engineer for full stack application solution

Implementation of a platform for managing contracts in active reinsurance within the credit business.

  • Development of an enterprise full-stack platform for managing reinsurance contracts in the credit business domain.
  • Responsible for backend development, database versioning and application containerization with Docker to ensure secure and consistent software delivery.
  • Worked in an enterprise DevSecOps environment using Rancher for managing Kubernetes-based deployments, Elastic Stack for observability, and SonarQube for continuous code quality monitoring and Azure DevOps for Repositories, Project Management and CI/CD Pipelines.
  • Participated in secure credential and secret management processes leveraging HashiCorp Vault and CyberArk.
  • Applied Clean Architecture principles with CQRS, Repository Pattern and Unit of Work to ensure maintainability, scalability and testability.
  • Contributed to frontend integration with Angular and PrimeNG, applying component design patterns for a clean UI architecture and reliable software delivery aligned with DevSecOps standards.

ASP.NET Core Entity Framework Core PostgreSQL Liquibase Docker Redis Rancher (Kubernetes-based environment) Azure DevOps (Repositories & Project Management & CI/CD) Elastic Stack HashiCorp Vault CyberArk SonarQube Clean Architecture CQRS Repository Pattern Unit of Work xUnit Angular PrimeNG SCRUM
Insurance company, Germany

Aus- und Weiterbildung

Aus- und Weiterbildung

Applied Computer Science

Bachelor of Science (B.Sc.)


Certification

  • Azure

Kompetenzen

Kompetenzen

Top-Skills

CI/CD ASP.NET .NET Liquibase Docker C# TypeScript GitLab PostgreSQL Entity Framework SonarQube ELK Rancher Vault

Produkte / Standards / Erfahrungen / Methoden

About me

  • I?m a .NET Backend Engineer experienced in developing secure, scalable, and maintainable enterprise applications within DevSecOps environments.
  • I focus on building robust backend systems using .NET, Entity Framework Core, PostgreSQL, and Liquibase, applying Clean Architecture, CQRS, and DDD to ensure performance and long-term stability. 
  • My experience includes containerization with Docker, deployment workflows using GitLab CI/CD and Rancher-managed environments, and the use of enterprise-grade tools such as SonarQube, Elastic Stack, HashiCorp Vault, and CyberArk for quality, observability, and security.
  • Having worked in regulated industries like finance and insurance, I emphasize reliability, compliance, and automation in every solution I deliver.


Attributes

  • highly outcome-oriented
  • very reliable
  • strong communication
  • highly committed and hardworking


Tech Stack

Backend

  • .NET (C#) 
  • ASP.NET Core 
  • Entity Framework Core 
  • PostgreSQL 
  • Redis (Caching) 
  • Liquibase (Database Migrations)
  • Clean Architecture 
  • CQRS 
  • Unit of Work 
  • DDD (Domain-Driven Design) 
  • RESTful API Design 
  • Unit Testing 
  • Performance Optimization


DevOps

  • Docker (Containerization) 
  • GitLab CI/CD 
  • Azure DevOps (Repositories & Project Management) 
  • Rancher (Kubernetes-based Environment) 
  • Elastic Stack (Elasticsearch, APM, Logging) 
  • SonarQube (Code Quality) 
  • HashiCorp Vault & CyberArk (Secrets Management) 
  • Version Control (Git)
  • Infrastructure as Code (IaC) 
  • Microsoft Azure (IAM/RBAC, Networking, Cloud Resources)

Vertrauen Sie auf Randstad

Im Bereich Freelancing
Im Bereich Arbeitnehmerüberlassung / Personalvermittlung

Fragen?

Rufen Sie uns an +49 89 500316-300 oder schreiben Sie uns:

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