02.06.2026 aktualisiert

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Senior DevOps Engineer & IT Consultant

Ramsen, Deutschland
Weltweit
Fachinformatiker Anwendungsentwicklung
Ramsen, Deutschland
Weltweit
Fachinformatiker Anwendungsentwicklung

Profilanlagen

CV-Sebastian-Mahr-DE.pdf
CV-Sebastian-Mahr-EN.pdf

Über mich

I have been working in all kind of IT projects and am passionate about building quality software and robust systems. Over my 20+ years I have worked in engineering, QA and architecture focused roles, and gained valuable insights on what can bring a project to success.

Skills

Continuous IntegrationDevOpsOpenShiftScrumSystem DesignWorkflowsGitGit FlowKubernetesCloud-Migration
DevOps and CI/CD Automation
Continuous Integration and Continuous Development with expertise in lifecycle management, build and deployment process automation, and GitOps methodologies

Cloud Migration and Infrastructure
Cloud migration strategies and implementation with experience in Azure, container platforms including Kubernetes, OpenShift, and Docker

Testautomation and QA strategies
Loadtesting, Performancetesting, Unittesting

Software Development and System Design
System design and implementation with programming languages including Python, Java, Groovy, and frameworks like Spring Boot, Angular, Django

Database Management
Database administration and integration with Oracle, DB2, MySQL, MS SQL, PostgreSQL, and Apache Gremlin

Operating Systems Administration
Operating system management across various Linux distributions, AIX, Solaris, and Windows environments

SAP Integration
SAP RFC integration and enterprise system connectivity

Agile Methodologies
Scrum and GitOps implementation for project management and development workflows

Banking and Financial Services
Banking and financial services industry experience with regulatory compliance and specialized software solutions

Sprachen

DeutschMutterspracheEnglischverhandlungssicherFranzösischGrundkenntnisseSpanischGrundkenntnisse

Projekthistorie

Freelance Consulting

BlueYonder Group, Inc. GmbH
Conceptual design and development of software supply chain: Release, environment and secret management, dependency management for business services in customer landscapes. Database for configuration management and automatic deployments. Reference implementation with Scrum Team in 4 months

Freelance Consulting: Loadtesting Automation

ING Germany
Implementation of scalable, locally hosted platform for load/performance testing with k6 and gatling, as a set of python microservices integrated with Azure Devops. Adaption of new regulatory requirements (DORA) for release process of banking software.

Freelance Consulting: Environment Management OpenShift

SCHUFA AG
Development environment management service for microservices on Openshift. Configuration and access management and automated deployment of development and test environments. Versioning of build, deployment and environment configurations. Integration in Ansible Tower for automated deployments and monitoring. Build and Deployment Pipeline for Artifacts and Docker Images (Jenkins as a Service)

Freelance Consulting DevOps & Releasemanagement

DMG Mori
Automation of Release, Build, Deployment and QA processes in Azure DevOps / Cloud / IoT Edge environments. Complexity-Management for distributed software, reducing release time from two days / 8 persons to a nearly completely automated process in 2 hours

Externe Beratung: Cloud Migration

ING Germany
Concept for Migration of Banking applications to Azure Cloud automated permission management using Ansible Tower

Freelance Consulting: CI/CD

Lufthansa AirPlus GmbH
Automated provisioning of CI/CD infrastructure. Build and deployment pipelines for artifacts and docker images (Jenkins as a Service, AKS, Helm)

Externe Beratung: Cloud Migration

ING Germany
Concept for Migration of Banking applications to Azure Cloud automated permission management using Ansible Tower

Freelance Consulting: CI/CD

ING Germany (ING DiBa)
Building a secure container pipeline for OpenShift. Automated provisioning of DevOps infrastructure: Bitbucket, Jenkins, Sonarqube, deployment via Ansible in test environments with dedicated access roles. Configuration management and archiving for banking applications. Development and operation of microservices (SpringBoot, Angular UI) for CI/CD automation. Migration from Jenkins servers to Cloudbees Enterprise. Development of Jenkins plugins for internal processes. Setup of artifact management and scanning with Artifactory & X-Ray

Product management: moreen

spell GmbH / various end customers
Head of product development of the workflow software moreen. Design, implementation and support of IT processes (document workflow) for customers. Conception of online migration processes and implementation of migration. Used by AOK, MAN, Douglas, BASF-IT, MillerCoors, T-Systems, ABB, Kone, among others

Software Development

spell GmbH
Further development of the in-house product moreen: Mass processing of documents with different external systems (archives, SAP, DB, FTP, web services). Configurable and controllable by JavaScript, developed in Java. Development of test cases for the simulation of customer environments. Test cases for new features

Development De-Mail: gateway

spell GmbH / T-Systems
Sealed appliance (as VM and hardware) for the exchange between company email infrastructure and DE-Mail providers with self-diagnosis and regulation. Development exchange (SMTPs / POP3S), validation and transformation. Integration of the settings for OS in web interface. Integration of smartcard as basis for TLS encryption. Development of test tools and cases for mail processing and De-Mail sending / receiving

Project planning document workflow

spell GmbH
Process design for the use of moreen for processing documents with external systems (archiving, referencing in SAP, third-party systems). Specification, implementation, commissioning of individual processes. Use moreen as a tool for live migration via interfaces of two systems. Support of the customer base and recording requirements for new features.

Development Data Migration

spell GmbH
Development tools for extraction of data and data structures from production databases (SAP, archive systems). Development Tools Extraction of data from raw media like CDs, tapes. Create automated plausibility checks depending on the data source. Development tools for transformation and import into target system

Web Development

ABB
Development web interface for technical documentation collection with Django. Development of a Multiple-DB-Layer for Framework django. Automated creation of sub-databases as standalone application from CD

Web Development eCommerce

ST encode GmbH
Adaptation and maintenance, design of an existing store system. Client-side extensions and tests (JavaScript, Greasemonkey). New features, which were not implemented on the server side by the manufacturer, implemented in JavaScript

Internship: Software Development

bebis IT GmbH, Manneim
Prototype for time and material recording using barcode scanners (C) and BlackBerry (Java ME). Integration with Lotus Notes

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