Oracle Database Experts in Stuttgart

Sercan Tatar

Certified Professional for Software Architecture Foundation Level

Esslingen am Neckar

Last position:

Co-Founder & Lead Software Architect at Pflege-Pfad

Focus: system architecture, cloud-native platforms, microservices, API design
Product: Pflege-Pfad is a digital matchmaking platform that connects relatives of people in need of care directly with verified care services and caregivers - without an agency and without ongoing fees.
Business analysis & process design:
Analysis of the German care market and identification of the key pain points of both target groups.
Modeling of the core business processes: registration, verification, care request, application, placement, and rating.
Definition of the business model as a freemium/premium model with optional contact unlocking.
Creation of user stories and requirements documentation for relatives, care services, and administrators.
Design of trust and quality assurance mechanisms with document upload, admin review process, and rating system.
Coordination with stakeholders and validation of product decisions with potential users.
Technical implementation:
Design and implementation of the entire platform architecture as a solo developer.
Design and implementation of a REST API with Spring Boot and Kotlin, including JWT-based authentication.
Development of the frontend as a single-page application with Angular 17.
Implementation of the AWS infrastructure with EC2, RDS PostgreSQL, S3, CloudFront, and IAM.
Document upload with AWS S3 via presigned URLs for verification of care services.
Email notifications via Resend API.
AI-supported care service search via OpenAI API.
Implementation of complete user flows such as registration, login, password reset, and placement process.
Building an admin panel for user and care service management as well as analytics.
CI/CD with GitHub Actions and containerized deployments with Docker.
End-to-end tests with Playwright.

Technologies: Kotlin, Spring Boot 3, Spring Security, JWT, JPA/Hibernate, PostgreSQL, Angular 17, TypeScript, RxJS, AWS (EC2, ECS, S3, CloudFront CDN, RDS PostgreSQL, IAM), nginx, GitHub Actions, Playwright, Maven, Git, OpenAI API, Resend API, Docker, Scrum, i18n (DE/EN/TR), Kiro, feature-flag architecture.

Artyom Narimanyan

Senior Software & Cloud Consultant

Ludwigsburg

Last position:

AI Automation Engineer & Solution Architect at Technology Research Project

Designed and developed an AI-powered automation platform using n8n to analyze social media niches, identify target audiences, and automate marketing strategy generation. The solution combined AI agents, workflow orchestration, and data analysis to automate research processes and generate data-driven insights.

Designed and implemented complex automation workflows using n8n
Developed AI-powered analysis agents for market and audience research
Integrated multiple APIs and AI services into automated workflows
Built automated market, competitor, and target audience analysis pipelines
Leveraged Large Language Models (LLMs) for information summarization, classification, and prioritization
Containerized and deployed the platform using Docker

Technologies: n8n, AI Agents, OpenAI APIs, Prompt Engineering, LLMs, Docker, Linux, REST APIs, Webhooks

Pierre-Jean Albertini-Fujii

BI and Mechatronic System Development

Last position:

Verification Engineer – Aviation at Tri.Merge GmbH

Automated Python-based analysis of test script repositories
Built a SQLite database for signal and value tracking
Identified critical discrepancies with ad-hoc SQL queries
Technologies: Python, SQLite, Excel/ODBC

Marko Oršolić

System Administrator in a 6-person Team

Last position:

System Administrator in a 6-person Team at FITS

System administration of FreeBSD 11, 12 and 13.1 in a secure cloud software solution
Administration of proxy servers for FITS and its clients, banks and state banks
Administration of secure internet solutions
Administration of secure mail solutions and mail gateways
Administration of Apache 2.4 web servers
Planning and maintenance of servers and network components in FNT Command
Incident, change and ticket handling, especially troubleshooting network issues using Splunk and ARS
Troubleshooting and log file analysis using Splunk Enterprise
Monitoring with Nagios
Ordering, provisioning and installation of certificates on Apache web servers, Nginx web servers and load balancers
Hardware: HP ProLiant DL380 Gen 9 and 10, Cisco Catalyst
Software: FreeBSD 11, 12 and 13.2, FNT Command, shell scripts, MySQL databases, ServiceNow, ARS, Splunk Enterprise 8.15

German Rauhut

Freelance Technical Product Owner & AI Product Builder

Last position:

Freelance Technical Product Owner & AI Product Builder at Neckarshore AI / Freelance

Two complementary tracks: (a) building my own AI products and open-source tools under the Neckarshore AI brand, with a focus on AI-supported multi-agent development processes and documentation automation; (b) freelance support for industrial, logistics, and financial companies in IT-related transformation projects.

Current product portfolio under the Neckarshore AI brand:

Omnopsis Documenter — AI-powered documentation engine: generates compliance, technical, and release documentation from Git, Jira, and Confluence. 500+ automated tests, 100+ API endpoints, RBAC, monitoring stack.
TrustScope — trust analysis for public GitHub repos: deterministic three-pillar report (Security & Supply Chain, Governance, Community) based on OpenSSF Scorecard, with constructive fix suggestions instead of a single misleading score.
md-viewer — dependency-free Markdown viewer for macOS (Finder Quick Action) and web, split view of rendered document and raw text.
Obsidian Vault Autopilot — AI-supported vault automation for Obsidian × Claude Code: sorts the inbox, renames notes, enriches frontmatter.
Phonesis Voice Bank — voice archive for families, hospices, and cultural archives (guided recordings, inheritable archive, optional voice cloning); currently in the GDPR compliance phase (Art. 9, biometric data).
Multi-Agent Development Process — 12+ specialized agents (architecture, implementation, security, refactoring, marketing) with structured handoff protocol, parallel execution, and automated quality assurance — powers the entire product development.
Freelance consulting: Technical Product Ownership for production, logistics, and compliance/AML systems; steering international rollouts including test, cutover, and change management.

Stack: NestJS, TypeScript, PostgreSQL, Redis/BullMQ, Next.js, Claude Code (Opus), Docker, GitHub Actions, Vercel

Alexandra Grözinger

Test Coordinator Project GoDigital

Lichtenwald

Last position:

Test Coordinator Project GoDigital at Insurance company

Support of test management and consulting on replacing the existing core system for non-life insurance with a modern IT platform.
Planning and controlling test execution as well as test analysis.
Documentation of test results in JIRA/XRAY and defect management.
Creating and continuously updating checklists to ensure quality.
Creating Confluence pages to support test execution and its documentation.
Creating test completion reports after each test cycle.
Methods: process planning, status tracking, process optimization, process execution, process quality assurance.
Tools: MS Office, Outlook, JIRA, Confluence, Wiki.
Benefit: Support for test management in the preparation, execution and documentation of the different test cycles.

Wael Mansour

Test Manager

Waiblingen

Last position:

Test Manager at Schwarz IT

Design, planning, and test case analysis
Integration testing
Coordination of UAT in the lab and on site
Creation of HW and SW test catalogs
Communication of test results from REST services with the SAP team
Support for branches in the EU until rollout
Coordination of defect management and SW updates with the involved vendors
Checking the configuration of the charging stations in the backend software for different countries
Continuous reporting of the quality status to project management
Documentation of the user manual in English and German
Tools: Confluence, be.Energised, OCPP Postman, OPI, CCV (payone.elavon), Excel, it4you

Carlos Medina

Implementation in Pimcore/Shopware

Last position:

Implementation in Pimcore/Shopware

Consulting, design, analysis, software architecture and development
Designing, developing, and implementing a Pimcore environment and connecting multiple external API systems in a Kubernetes environment, as well as various PIM and ERP systems
Technologies: Unix environment, design, Symfony development, PHP 8+, software architecture, MySQL/SQL, shell scripting, Git DevOps tasks, AI coding support, Pimcore 12, Shopware 6
Team size: >10 people

Robin Sadlo

Senior Cloud & Backend Engineer

Last position:

Senior Cloud & Backend Engineer at Media-Saturn-Holding GmbH

Implementing applications with Kotlin and Ktor as microservices
Using MongoDB in the MongoDB Atlas cloud
Asynchronous communication of services via Google Pub/Sub
Using Kotest and MockK for unit tests
Developing an administration frontend with TypeScript, React and Express.js
Provisioning environments in GCP using Terraform
Implementing CI/CD processes with GitHub Actions
Operating scalable production and test environments in GCP with Kubernetes, Helm and Flux CD
Monitoring environments with Prometheus and Grafana
Providing BI data in the Google BigQuery data warehouse

Will Orrantia

Solution Architect

Esslingen

Last position:

Solution Architect at Stuttgart Police Authority

Designing the migration strategy for WLS applications to the BKA cloud and Stack IT
Creating a hybrid cloud for internal testing and development with Kubernetes
Transforming the IT landscape from a legacy monolithic architecture to a cloud-based architecture
Integrating new CI/CD processes using Azure Pipelines
Quadrupled the throughput of personnel security checks
Migrated personnel security clearance applications to Docker-based applications
Built CI/deploy pipelines with Azure DevOps
Environment: Java Spring Boot, Kubernetes, Oracle WebLogic, OpenID, Camunda, JUnit, TOGAF

Albert Frischmann

Lead Product Owner

Last position:

Lead Product Owner at CMBlu Energy AG

Lead Product Owner for 4 development teams
Leading and coordinating a greenfield project with parallel implementation of core components by independent teams; managing dependencies and resources
Establishing a data lakehouse approach, including analysis of data volumes and future requirements as part of a cloud migration (best-of-breed approach)
Responsible for requirements analysis, selection, and piloting of a LIMS/ELN system, supported by advising decision-makers and managing external vendors
Introducing and managing an OpenWeb UI and Azure OpenAI-based RAG system to support knowledge extraction and data-driven analyses
Setting up, configuring, and managing Jira projects, as well as developing project-specific workflows and automations
Implementing classic Scrum processes with all ceremonies and taking on the Scrum Master role for all involved teams
Assisting in hiring through interviews and assessments from a product owner's perspective
Making key architectural decisions, including selecting the platform for the data lakehouse (Databricks) and the strategic integration of LIMS and analytics platforms

Lothar Hinsche

Solution Manager for PoC investigation and for replacing and refining an existing cloud and IoT power plant control system

Ditzingen

Last position:

Solution Manager for PoC investigation and for replacing and refining an existing cloud and IoT power plant control system at Shell AG and NEXT Kraftwerke GmbH

Investigating the PoC and replacing and refining an existing cloud and IoT power plant control solution for certificate management of renewable energy plants (solar, wind, biomass, etc.) for the largest European renewable energy network operator, including examining the field IoT devices and their integration and network connections, aiming for automated PKI key management.
Messaging with Kubernetes for large API-connected enterprise applications
Risk and attack vector analysis, software quality & bug assessments
Agile workload scheduling via Jira & Confluence
Evaluation of pub/sub message streams for MQ and Kafka.
Various tests with “best design approaches” for resilience patterns like circuit breaker designs, throughput measurement and monitoring, bulkhead governors – for robust EA design
Integration of API management with IBM's API Connect to Kubernetes for platform-agnostic microservices API management designs. Google Apigee
Solution health check approaches for load burst situations + remedy
Research and evaluation of potential sub-service providers in the coordinating role as solution manager. CIS20 controls.
DREAD and STRIDE security assessments.

Achille Chimi

Backend/Frontend Developer

Vaihingen an der Enz

Last position:

Backend/Frontend Developer at ITZ-Bund

Development of a microservice application for calculating postings on accounts
Development of backend components with Java or JEE, Quarkus, Kafka, Rest API
Development of the test component with mocking frameworks (Mockito)
Development of integration test components
Creation of OpenAPI specification format
Configuration of CI/CD pipeline
Development of frontend components with React
Design, further development and optimization of system structures
Code review
Java Corretto 21, JEE, Quarkus, Golang
Reactive programming with Spring WebFlux, Project Reactor
Git, Azure DevOps for CI/CD pipeline, YAML, Json Swagger UI, Postman, Rest OpenAPI, Kafka Streams, Kafka Connect, Log4J
Microservices, Jira, Confluence, MySQL, Docker, Kubernetes (deployment via Helm charts)
Spring Security, OAuth 2, JWT, Sonarqube
IntelliJ, Maven, logging framework Splunk, Agile method Scrum, Nexus, Vaadin V24, build tool Vite
React, React.JS, Node.js, Jess/JavaScript, Tailwind CSS, Agile method Scrum, accessibility BITV, Playwright

Boas Betzler

CTO, Complex Cloud Solutions

Filderstadt

Last position:

Technical Leader and Executive Sponsor, AI Solution Assistant

Product owner and Executive Sponsor for AI Assistant trained on a knowledge base of past solution designs, RFP documents, and current product documentation
Used by close to 100 global architects and engineers in pre-sales and post-sales
Generates full solution documents with requirement driven architecture decisions, solution overview, diagrams, bill of material, roles and responsibility matrix
Technologies: AI, LLM, Chat Bot, RAG, Agentic AI, Vector Databases, Public Cloud

Christian Bloch

Principal Consultant (Self-employed)