Taher Solimany - DevOps Engineer

Recommended expert

Hamburg, Germany

Experience

Apr 2025 - Present

10 months

DevOps Engineer

Confidential

Collaborating with developers, security, and operations teams to align requirements
Supporting product owners and development teams in deploying logging and monitoring solutions based on the Elastic Stack
Developing and standardizing log schemas as well as defining practical standards for observability
Designing and further developing logging architectures for complex, distributed multi-tenant environments
Connecting application and infrastructure logs as well as security tools and metrics
Optimizing data flows and modeling for analysis and reporting purposes
Building automated infrastructures using Terraform/Terragrunt and Ansible
Maintaining and evolving CI/CD pipelines in GitLab as well as automated development environments in Hetzner Robot
Operating and automating Proxmox clusters including Ceph storage
Setting up and running Kubernetes (k3s) clusters on Fedora CoreOS including core services like Vault, OpenLDAP, and HAProxy
Implementing security-critical infrastructures according to BSI basic protection and securing existing systems
Supporting the operation of solutions in cloud environments (e.g., AWS)
Working in agile teams following Scrum and Kanban
Technologies/Tools: Elastic Stack (Elasticsearch, Logstash, Beats/Elastic Agent, Kibana), Terraform, Terragrunt, Ansible, GitLab CI/CD, GitOps, Proxmox, Proxmox Ceph, Kubernetes (k3s), OpenShift, Helm, Kustomize, Vault, OpenLDAP, HAProxy, Hetzner Robot systems, AWS, Prometheus, Grafana, Syslog Linux/Windows, Docker, NGINX, Apache Security & Compliance (BSI basic protection, SIEM/SOC)

Apr 2024 - Mar 2025

1 year

DevOps Engineer

Bitmarck Technik GmbH

Working in an agile team using Kanban
Migrating monolithic applications and microservices to OpenShift in a scalable microservices architecture
Building and maintaining CI/CD processes for automated deployments with GitLab and ArgoCD following GitOps principles
Developing logging and monitoring strategies with the Elastic Stack (Elasticsearch, Logstash, Kibana, Beats) including dashboards, visualizations, and alerting
Creating log schemas, normalizing and enriching data for improved observability
Setting up monitoring dashboards in Kibana and extending observability with Prometheus and Grafana
Secret management using kubeseal and sealed secrets and securing platform components according to BSI basic protection
Onboarding microservices to OpenShift including Helm chart integration and Kubernetes Kustomize templates
Connecting a 3Scale manager for load balancing and integrating a web application firewall into the namespaces
Performance optimization and high-availability concepts for Elastic clusters and microservice deployments
Building and operating logging and monitoring architectures for multi-tenant environments
Integrating Prometheus blackbox exporters to collect metrics from microservices
Setting up ELK and Logstash pipelines for processing and standardizing logs from multiple clients
Load balancing and reverse proxy with NGINX/HAProxy
Technologies/Tools: Kubernetes, OpenShift, ArgoCD, on-premise, OAuth2, GitLab, GitOps, Helm, Kustomize, Prometheus, Grafana, PaaS, ELK, NGINX, Apache

Sep 2020 - Apr 2024

3 years 8 months

DevOps Engineer

Airbus S.A.S.

Contributing in an agile team following SAFe and actively supporting the transformation of legacy systems
Migrating a monolith to a microservices architecture and building a scalable container platform
Integrating all changes into CI/CD pipelines with Jenkins and Docker, including automated tests and quality assurance
Building an automated infrastructure with deployment and service templates and self-healing mechanisms using Ansible
Implementing logging and monitoring solutions with the Elastic Stack (Elasticsearch, Logstash, Kibana) and standardizing log formats for various services
Integrating security and compliance tools into the logging architecture and normalizing and correlating logs for improved observability
Setting up dashboards for environment monitoring with Prometheus, Grafana, and Kibana, including performance and capacity analyses
Integrating static code analysis (SonarQube) into the development process to ensure code quality and compliance
Containerizing and orchestrating services with Docker and Kubernetes, including building multi-tenant structures
Configuring load balancers with HAProxy and securing the platform with reverse proxy and HTTPS connections (including SSL certificates, HSTS, OCSP stapling)
Conducting performance and load tests with Citrus to ensure system stability
Building a proof of concept with a deployment pipeline in OpenShift and migrating to the AWS cloud infrastructure
Provisioning and setting up integration, validation, and production environments with Ansible and Terraform
Developing security-critical architectures according to BSI basic protection and supporting security monitoring in cloud and on-prem environments
Version control with Git and working according to agile principles
Technologies/Tools: Shell, Docker, Kubernetes, MongoDB, OpenShift, Gradle, Ansible, AWS, SaaS, GitLab, Kanban, SAFe, Citrus

Apr 2020 - Aug 2020

5 months

Backend Developer

Bosco Consulting GmbH & Co. KG

Working in an agile team using Scrum
Implementing a web service for automatic generation of profiles for applicants
Connecting a MongoDB for applicant data
Integrating all changes into a continuous integration pipeline with OpenShift
Containerizing and orchestrating the application with Docker and Kubernetes on AWS
Setting up version control with GitLab
Infrastructure provisioning on AWS using Terraform
IAM configuration with Terraform
Autoscaling with Terraform
Technologies/Tools: Kotlin, Docker, Kubernetes, MongoDB, OpenShift, Terraform, Gradle, AWS, Ansible

Nov 2018 - Mar 2020

1 year 5 months

DevOps Engineer

Hamburg Südamerikanische Dampfschifffahrts-Gesellschaft A/S & Co KG

Automating build and deployment processes for the in-house software GLOBE
Developing build tools with Gradle to simplify and standardize integration and deployment workflows
Creating and maintaining CI/CD pipelines with Jenkins and Shell, including integrating automated UI tests
Automating deployments of new versions of the Java application and building reusable deployment templates
Introducing containerization and orchestration with Docker and Kubernetes, including basic logging and monitoring concepts
Extending monitoring with Dynatrace by creating dashboards for production and release environments and analyzing performance and availability metrics
Integrating the Elastic Stack (Elasticsearch, Logstash, Kibana) as a central platform for log collection, visualization, and troubleshooting
Defining logging standards and normalizing logs to unify the data base for security and operations teams
Integrating SonarQube for quality analysis into the CI/CD processes to ensure code quality and security standards
Developing a web service with Java and Spring Boot to connect various task tracking systems from external providers
Optimizing server parameters (worker processes, caching solutions like mod_cache) to improve stability and performance
Supporting infrastructure hardening and integrating security measures into existing deployments
Connecting GitLab for version control
Technologies/Tools: Java EE, Groovy, Gradle, Shell, Docker, SQL, Kubernetes, SQS/SNS, PaaS, SaaS, OAuth2, GitLab, Apache, NGINX, Jenkins, Dynatrace, AWS, OracleDB, Artifactory, JIRA, Kanban, Confluence

May 2016 - Oct 2018

2 years 6 months

System Administrator

Universitätsklinikum Eppendorf

Support and maintenance of complex server applications and their underlying platforms
Supporting the operation of test and production systems
Support and maintenance of middleware applications
Handling and resolving incidents and service requests in 2nd level IT operations as part of the incident management process
Classifying and analyzing root causes as part of problem management
Participating in the configuration and asset management process for configuration items
Monitoring and ensuring compliance with existing service level agreements and processes
Distributing software and updating the application infrastructure with patches and security updates
Performing capacity and availability management in the context of the application infrastructure
Technologies/ applications: ECS, Shell, Linux, Oracle DB, Gradle, Groovy, Scrum, Jenkins, OpenShift, Confluence, Jira, OmniTracker

Oct 2015 - Apr 2016

7 months

Backend Developer

PONTON GmbH

Working in an agile team using Scrum
Designing multiple web services based on a cloud-native approach
Implementing token-based authentication between services and the frontend
Applying a clean architecture pattern
Writing an automated UI snapshot and a unit test with Gradle and Jenkins within a CI pipeline
Integrating automated Selenium tests into the pipeline
Implementing asynchronous communication between frontend and REST-based services
Analyzing and visualizing user data
Creating trends using neural networks in Python and Anaconda
Technologies/ applications: Kotlin, Ktor, Python, Anaconda, Selenium, JWT, Jenkins, Gradle, Scrum, GitLab, JUnit