Eyad
Alrayes

I move grown systems to where they belong — without bringing the business to a halt.

Built a Kubernetes platform in an on-premise data centre. Moved an application and its SAP integration to Google Cloud while the business kept running. Brought sign-in and permissions together across OKTA and OMADA. More than ten years building and running production systems.

Discuss a project View profile
System Console Online
AvailabilityFreelance — 10–15 hrs/week
LocationBad Abbach — Regensburg
CloudAWS · Azure · GCP
LanguagesDE · EN · AR
FocusMigration · Integration · Identity
Experience10+ years
Time zoneCET (UTC+1)
Design systems. Run them. Improve them.
What I am brought in for

Services

Three areas of focus, plus two that almost every project brings along. In practice they overlap.

Infrastructure & System Integration

  • Linux and server operations
  • Network-adjacent systems
  • Technical interfaces between systems
  • Troubleshooting in production

Identity & Authentication

  • Identity management and authorisation
  • SSO, OAuth/OIDC
  • RADIUS-based authentication
  • Integration of existing identity systems

Cloud & DevOps

  • Cloud infrastructure on AWS, Azure and GCP
  • CI/CD pipelines and automation
  • Containerisation and deployment
  • Infrastructure as code, monitoring

Software Engineering

  • Backend development and APIs
  • Software architecture
  • Refactoring existing codebases
  • Integration and modernisation of grown systems

Technical Consulting

  • Technical analysis and architecture advice
  • Migrations
  • Technical reviews
  • Support for running projects
What I work with

Technical stack

Highlighted are the technologies I use regularly and in production systems.

Software Engineering

Java 8–21Spring / Spring BootC# / .NET 8Vert.xHibernateTypeScriptNode.jsPythonREST-APIs

Cloud & DevOps

AWSAzureGCPDockerKubernetesRKE2 / RancherTerraformAWS CDKCI/CDJenkinsGitHub ActionsAnsible

Infrastructure & Data

LinuxvSphereTraefikPostgreSQLOracleMS SQLMongoDBCosmosDBInfluxDB

Identity & Security

KeycloakOKTAOMADARADIUSOAuth / OIDCSSOUCOPIA
Projects from practice

Selected project experience

Excerpts from production projects, showing the range: cloud backends, platform infrastructure, system integration and authentication.

01

Cloud backend for IoT devices (Maxxisun CCUv2)

Balcony and rooftop power plants whose control units communicate continuously with a cloud backend.
AWS
e.telligent GmbHDevelopment of the backend and the serverless processing path.
Contribution
AWS backend in production use with serverless processing and time-series persistence.
02

Azure IoT backend (Triathlon)

Connecting IoT devices to a scalable cloud backend on Azure.
Azure
e.telligent GmbHBackend development in C# / .NET.
Contribution
Cloud backend with device connectivity and data persistence in CosmosDB.
03

e.CoSys

Backend application with its own deployment and operations path.
JavaCI/CD
e.telligent GmbHDevelopment of the application and setup of pipeline and infrastructure.
Contribution
Scalable application with automated deployment and Keycloak-based authentication.
04

Kubernetes-based hosting platform

Building a platform for running microservices.
Infrastructure
evanto media GmbHBuilding the base structure with a focus on infrastructure and automation.
Contribution
A workable foundation for operating containerised services.
05

Cloud migration with SAP integration

Moving existing software components to Google Cloud.
GCP
evanto media GmbHMigration of the components and implementation of the integration.
Contribution
Migrated components with infrastructure as code and automated workflows.
06

User management and identity integration (GEMA)

Backend systems with complex business processes and central user management.
BackendIdentity
evanto media GmbHDevelopment of the backend systems and the integrations.
Contribution
Integrated user management connected to OKTA and OMADA.
07

Guest Wi-Fi with RADIUS authentication (UCOPIA)

UCOPIA-based guest Wi-Fi with authentication across multiple sites.
InfrastructureIdentity
evanto media GmbHTechnical implementation and fault analysis during live operation.
Contribution
Hands-on experience at the intersection of authentication, network and infrastructure.
Professional background

Career

Dec 2023 – present
Senior Software Developere.telligent GmbH · Regensburg
Cloud backends on AWS and Azure for IoT applications · Backend development in Java and C# / .NET · CI/CD pipelines, containerisation and operations
AWSAzureJava
Jan 2017 – Nov 2023
Software Developerevanto media GmbH · Regensburg
Backend systems and integrations, including connections to identity management systems · Building a Kubernetes-based hosting platform · Cloud migration to Google Cloud with SAP integration · Guest Wi-Fi with RADIUS authentication across multiple sites (UCOPIA)
KubernetesGCPIdentity

Earlier positions on request.

Formal qualifications

Education

Bachelor of Science — Information Technology

Syrian Virtual University, Damascus · 2020

IHK FOSA recognition

IT specialist for system integration · Germany

Technical diploma — Computer engineering

Technical secondary school, Syria · 2013

Ways of working together

Types of engagement

Project support

Reinforcing existing development teams, also at short notice.

Technical troubleshooting

Analysing and fixing complex technical problems.

Software engineering

Building and extending applications and interfaces.

Cloud & DevOps

Cloud, deployment, automation and infrastructure topics.

System integration

Integrating existing systems and technical interfaces.

Technical consulting

Architecture, technical analysis and advice.

Discuss a project or a technical problem

Contact

A short description of the task is enough — technologies, timeframe and scope. I will come back with an honest assessment of whether and how I can help.

Write an e-mail
Location
Bad Abbach, Regensburg area
Availability
Selected freelance projects
Languages
German · English · Arabic