Groovy Experts in Munich

Markus B.

Software Development / Programming; Consulting; Project Management / Management / Organization / Coordination;

Last position:

Developer / DevOps, Consulting at A state authority in Baden-Württemberg / FSAS Technologies GmbH

Oracle Project Management and Automation

As part of the project, the operation of an Oracle infrastructure was automated by developing and enhancing Puppet modules and migrating existing Bash scripts to a standardized configuration management solution.

The aim of the project was to standardize and automate administrative processes, improve the maintainability of the Oracle platform, and increase the efficiency and traceability of infrastructure management through the use of Infrastructure as Code.

Analysis and migration of existing Bash shell scripts to a Puppet-based automation solution
Development and enhancement of Puppet modules for Oracle environments
Automation of installation, configuration and operational processes using Infrastructure as Code
Standardization and optimization of configuration management for Oracle systems
Creation and maintenance of technical and operational documentation
Planning, coordination and professional support during project implementation
Operation and automation of Oracle systems on x86-based Linux server platforms
Testing and quality assurance of the developed Puppet modules
Analysis and resolution of technical errors as part of the automation and migration
Close coordination with specialist departments and infrastructure teams to implement automation requirements

Technologies used: Puppet 7/8, SLES 15, Oracle 19, Oracle Grid, SVN, Windows Server, Confluence, VS Code, Ruby, Bash, Pass

Frank E.

DevOps

Ismaning

Last position:

DevOps at Lauck-IT

Operations and extensions of Azure DevOps pipelines
Operations and extensions of AWS services
Citrix (Windows 10, Bitwarden)
AWS: ECR, EKS, CloudFront CDN, Route 53, VPC peering and CNI upgrade, Atlas MongoDB, S3 buckets, static website hosting
Azure: build and deploy with DevOps pipelines

Siegfried-Thor B.

AI Risk Auditor for Enterprise CMS | AEM / AEMaaCS Architect | AI Governance (EU AI Act · NIST AI RMF · ISO/IEC 42001) | Web &

Grasbrunn

Last position:

Independent AI Risk Auditor & Software Architecture Reviewer at Confidential Client

Conducted an independent technical assessment of an AI-enabled software platform, combining AI risk auditing, cybersecurity analysis and software architecture review. Reviewed application components, APIs, data flows, LLM integrations, retrieval-augmented generation, multi-agent orchestration, authentication, tenant isolation, dependency vulnerabilities, AI governance and model lifecycle controls. Authored a technical audit report with a structured risk register, source-code evidence, regulatory references, corrective actions, AI system inventory, risk classification, remediation roadmap and Key Risk Indicators.

Technologies: TypeScript, JavaScript, React, Next.js, Node.js, REST APIs, MongoDB, Redis, AWS serverless services, OAuth 2.0 / OpenID Connect, LLM APIs, RAG, vector search, multi-agent orchestration, Model Context Protocol, C4 architecture modelling, threat modelling, NIST AI RMF, ISO/IEC 42001, ISO/IEC 23894, OWASP guidance, MITRE ATLAS

Vitaliy R.

DevOps GitOps (temp)

Puchheim

Last position:

DevOps GitOps (temp) at Signal Iduna

Responsible for Openshift/Kubernetes on-prem administration and developer support.
Developed URP infrastructure automation with Python, Ansible, Kustomize and ArgoCD, Argo Workflow/Events stack.
Wrote smoke and load tests for URP infrastructure utilizing Python, Kustomize and ApplicationSets.
Helped to set up and deploy URP infrastructure in Google Cloud, GKE.
Set up monitoring for URP and ArgoCD stack with Splunk Cloud.
Performed system administration tasks across RedHat Linux, Kubernetes/Openshift, ArgoCD, GitLab, Bitbucket Enterprise, Kafka and MongoDB.

Srinivasu K.

Fullstack Developer

Last position:

Atruvia

Project: Tax Exemption Order Application

The client has an existing application for creating and maintaining tax exemption orders for end customers; design and implementation of a comparable application for internal employees.

Design and implementation of microservices and the UI for the business area "tax exemption orders" using Domain Driven Design as well as Spring Boot and Angular.
Implementation of reactive, non-reactive, and asynchronous APIs (Spring REST, WebFlux, GraphQL).
Development of the Angular application, including state management using Signals, RxJS Observables, and subscriptions.
Securing the API and the application using OAuth2, JWT, and OpenID Connect.
Configuration and setup of CI/CD pipelines with Jenkins.
Collaboration with cross-functional teams and conducting code reviews.

Environment: Java, Spring Boot, Angular 18 & 19 (standalone, signals), RxJs, Bootstrap CSS, Vitesting, OpenShift, Istio, microservices, Kafka, Dynatrace, Jenkins, GitLab, Graylog, Sonar, Oauth2, OracleDB

Celso K.

SAP Commerce Cloud FullStack Developer

Ottobrunn

Last position:

SAP Commerce Cloud FullStack Developer at Spar

Implementation of a GitLab CI/CD pipeline based on SAP Commerce Cloud 2211
Development of a new B2C shop with Vue, Node and TypeScript to ensure scalability, extensibility and performance optimization
Integration of Microsoft Azure Event Grid with SAP Hybris
Implementation of BDD with Cucumber using Gherkin syntax to promote collaboration between development and business teams
Support and customization of a Spartacus shop
Technologies/Languages: Java, REST, OData, Behavior Driven Development (BDD), Cucumber, Node, Vue, TypeScript, Spartacus, GitLab CI/CD, Gradle, Maven, Ant, SonarQube

György K.

Senior Software Developer, Delivery Unit Software Design & Development

Last position:

Senior Fullstack Developer at Rockstardevelopers GmbH

Development of a test system
Establishment of the architecture using Scala/Java for the backend and Swing for the frontend
Setup of CI/CD pipelines with Jenkins for continuous integration, including automated builds
Participation in the Scrum team, including daily stand-ups, sprint planning, and retrospectives
Technology environment: Scala, Swing, EJB, JPA, Scrum, PostgreSQL, Mercurial

Anton K.

Head of Overall Technical Integration NSC / Hadoop Cloud Development

Last position:

Head of Overall Technical Integration NSC / Hadoop Cloud Development at IABG

Head of overall technical integration NSC (National Secure Cloud, project with approx. 60 employees).
Technical integration of all subprojects into one product, definition of interfaces and basic components of a cloud including hardware, technical architecture of the IABG platform.
Development of a Cloud Management Platform (CMP) capable of creating private/mixed clouds of any complexity based on a textual description with one click or interactively.
CMP also includes the complete hardware management lifecycle.
Kubernetes, OpenStack and Hadoop are used as the foundation.
The management layer includes Harbor, Gitea, Longhorn, Keycloak, Rancher and Jenkins, which are configured automatically.
Private cloud can run any customer workloads, including a full Hadoop layer with HDFS, Spark, MapReduce, Mesos, HBase and around 20 additional ML/DL technologies.
Hadoop worker clusters can also be installed automatically without Kubernetes on bare metal or commodity hardware.
OpenStack with Nova, Neutron, Ironic, Swift, Cinder, Ceph.
Development of a Java application Rudi: SOAP, REST, containers, DB.
Technologies: Kubernetes (K3s, Rke2, Minikube, Harbor, Gitea, Jenkins, Longhorn, Keycloak, Rancher), OpenStack (Nova, Neutron, Keystone, Swift, Ceph, Cinder, Sahara, Magnum, Kayobe, Kolla, Bigrost, Ironic), Hadoop (HDFS, Ambari, Solr, Livy, Ranger, YARN, Tez, HBase, Kafka, Hive, Zookeeper, MapReduce, Spark, Oozie, Flink), virtualization (Kubernetes (K3S), VMware, Oracle), scripting (Ansible, Puppet, Juju, Shell, Groovy, Gradle, Maven).

David C.

Scrum Master, Agile Coach

Grasbrunn

Last position:

Scrum Master, Agile Coach at Steadforce

Agile coaching at BMW – 8 coaching projects
Advised BMW department on introducing agile software development
Coaching product owners, Scrum Masters, managers and teams
Trainer for product owner workshops
Consulting firm project (Jan 2017 to present): Steadforce was the main partner in developing products that consultants used on client sites
As Scrum Master, supported scaling the project from six developers to three distributed Scrum teams with developers in Germany, Poland, Romania and Ukraine as well as stakeholders in Germany, US and India
Agile values evangelist
Organizing Scrum meetings
Facilitating retrospectives
Co-organizing team workshops
Working on code quality and test coverage for almost daily releases
UMS at BMW (Sept 2016 to present): Scrum Master for a team of 3 software developers
Organizing Scrum meetings and collaborating in Jira with the product owner at the client for agile fixed-price billing (payment based on t-shirt sizing)
Steadforce Campus: Redefining software development processes at Steadforce with a focus on clean code, code reviews and Scrum

Cagdas K.

Software Consultant

Oberschleißheim

Last position:

Software Consultant at SThree GmbH / Rewe Systems

Angular 13
Java (Spring)
Kafka
Kubernetes
New development and enhancements
Proof of concept development
Analysis and resolution of technical errors
Technical consulting

Daniel C.

Founder & Managing Director

Last position:

Founder & Managing Director at BotCraft GmbH

Building the company with a focus on connectivity for IIoT and Industry 4.0, iRPA/process automation, advanced robotics and smart systems, sensors and services
Project management and software architecture for IoT gateway development (since 2020) with protocol translation, IT/OT convergence and GRC
Developing RPA bots for automating and monitoring industrial processes with an agent-based AI approach (since 2020)
Implementing unsupervised clustering and anomaly detection for time series data in big data streaming pipelines (since 2021)
Introducing a Docker-based release train for OTA updates with DevSecOps and CI/CD (since 2018)

Claudius P.

IT Consultant on Temporary Assignment

Last position:

IT Consultant on Temporary Assignment at YER Talents GmbH

Release Management
Project Management
Business Analysis
Scrum
SAFe

Bela B.

Full Stack Lead Developer, Backend Architect

Last position:

Full Stack Lead Developer, Backend Architect at Telefonica (O2)

The software supports the complete planning and approval of antennas for mobile telephony.
The system was implemented using an event-driven microservice architecture for cloud-native deployment with Quarkus on the backend, Kafka for communication, and Angular for the frontend. Services run on Kubernetes in Google Cloud. A special challenge was synchronizing with the legacy system still used by some users.

Janusz M.

IT Senior Software Engineer

Last position:

IoT Edge Computing / Self-Driving-Cars at Automotive consulting company

Platform: Python ecosystem, RHEL 8, K10, AWS IoT Core, AWS Lambda, MLOps
Software: Java JEE/cloud, IntelliJ IDEA, AWS IoT Core, AWS Edge and Lambda, AWS SageMaker SDK, Docker Compose, Kubernetes, OpenShift 4, Tekton, Flux, Helm charts, JSON/XML technology, Nginx, Apache Spark, OpenAI (GPT Plus, DALL-E 3, Whisper), GAN, GitHub Copilot, AI/machine and deep learning, Jupyter notebooks, TensorFlow 2, Colab, Keras API, Prometheus, Grafana, Conda, Python 3.9, PySci stack (NumPy, pandas, Scikit-learn, matplotlib)
Responsible for webinar:
IoT edge computing: architecture, components, resources, management
IoT edge computing with MicroK8s, designing and creating flows/diagrams for AWS, three-step model for IoT ecosystem
IoT processes, connectivity, data transfer and deployment, security
Optimization of edge computing for IoT networks and services (AWS SQS queue, SNS notifications, events, analytics, buttons, device management/defender, Things Graph)
Machine/deep learning frameworks (models, training, pipeline optimization, deployment in the cloud/at the edge (OpenShift), monitoring workloads with Prometheus and Grafana)
Performance optimization for low latency/resilience using adaptive ML/DL/RL models for customer IoT data
Analysis of large sensor data sets with Apache Spark, Kafka clusters
Kasten K10 data management platform on Kubernetes multi-cluster with Helm chart, deployment, backup/disaster recovery (RTO/RPO), data lifecycle and security management
Implementation of multilayer artificial neural network (ANN) with TensorFlow 2 and Colab for regression and classification; data analysis and provisioning for applications; development of models for testing and training, deployment of models
Automation of business streamline processes with AI (Azure OpenAI, Discord bots/Zapier apps AI assistants (IntelliJ, GitHub Copilot))

Martin M.