CSS Experts in Stuttgart

Karin Albiez

Language Expert – Python Developer – AI Engineer

Leonberg

Last position:

AI Benchmark Engineer | Native language specialist German at Lilt

Task Engineering: Evaluating Coding Agents.
Asset Creation: Building realistic task environments using datasets and files in German. Crucially, these assets must remain in the target language to genuinely measure multilingual handling.
Prompting & Translation: finding failure points where AI does not work, in German.
Implementation & Verification: Supporting the development of robust solutions (reference implementations) and write highly reliable, deterministic verifier scripts (using rubric-based judging only when strictly necessary).
Calibration & Execution: Analyze execution logs and calibrate task difficulty (Easy to Very Hard) using standard Terminal-Bench run configurations against various model tiers (Haiku, Opus).
Quality Assurance: Participation in a rigorous, 4-layer human quality control process (creation, human review, calibration review, and audit) alongside automated LLM-based checks to ensure fairness, grammatical accuracy, and benchmark integrity.
Linguistic Review: Reviewing AI benchmark tasks across Hindi, Arabic, Japanese, Chinese, Czech and Turkish.

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.

Emmanuel Lampe

Fullstack Developer · PHP/Laravel, React/Next.js and Java

Last position:

Founder and sole developer

Development of a SaaS platform for esports teams with roles, scheduling, statistics, and billing
Planning and implementation of the architecture, external API integrations, and operations
Stack: Laravel 13, React 19, TypeScript, PostgreSQL, Redis, and Stripe

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

Thomas Arends

Interim Assignment

Wernau (Neckar)

Last position:

Interim Management at Vincorion Power Systems GmbH

Process and project management to optimize products and development processes for energy systems
Technical risk management
Requirements engineering and system architecture
System FMEA of power generator units and energy storage modules aiming for generic structures
Claims management according to Section 313 of the German Civil Code
Regulatory environment: military and NATO standards, AQAP, VG norms

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

Benjamin Schaich

Design and implementation of a new cloud service

Esslingen am Neckar

Last position:

Design and implementation of a new cloud service at Porsche AG

Design of a new cloud service
Requirements Engineering
API Design (REST API, Kafka)
Consulting on architecture, feasibility and effort estimation
Implementation of a microservice architecture
Implementation of a Spring Boot web service
Development of REST APIs including business and persistence logic
Kafka consumers and producers
Various Excel upload/download scenarios
Change Data Capture
Cloud provisioning with IaC/Terraform
Go-live with 30,000 users
Operation, support and bug fixing for other services

Environment/tools: GitLab, JIRA, Confluence, IntelliJ, Spring Boot, Java, Docker, Terraform, AWS ECS, Postgres, Apache Kafka, SAP Datasphere, JUnit, Debezium, Apache POI, Hibernate, JPA, Testcontainers

Ronald Foerster

IT Consultant & Training

Last position:

IT Consultant & Training at Various Small Projects & AI Training

Development of multiple websites for small businesses (6)
SEO/SEM
Business Consulting (Implementation of ERP systems (Fresha / MS Dynamics))
AI Tooling, Prompting & Coding
GenAI Chatbot (GPT 4.0)
Creation of a telephone agent (NLP services, Twilio, Python, Azure Services)
Python coding, report & dashboard creation
Stakeholder management and consulting throughout the project lifecycle

Training and Certifications in AI:

Microsoft Azure AI Fundamentals
Develop Gen AI Solutions with Azure Open AI Service
Designing and Implementing a Microsoft Azure AI Solution
Artificial Intelligence for the Business Professional
Generative AI for the Business Professional
Certified Artificial Intelligence Practitioner

Alexander Zubok

Fullstack Developer and DevOps Engineer

Last position:

Fullstack Developer and DevOps Engineer at Freelancer

Develop infrastructure and enhance existing infrastructure: Jenkins, GitLab Pipeline, OpenShift, Docker, Helm Chart, Kubernetes, Artifactory, CodePipeline, CodeArtifact, Python
Document solutions in Jira/Confluence
Support other colleagues in various technical areas

Ivan Greguric-Ortolan

Technical Lead

Last position:

Technical Lead at Porsche Digital GmbH

Contributed to the design of the new financial services integration layer and moderated the architectural discussions
Oversaw the security concept and approval of the application
Prepared infrastructure setup and best practices for the Kotlin backend

Alban Tchuinkou

C/C++ Developer on AIX Systems for SAP Kernel System Integration

Last position:

C/C++ Developer on AIX Systems for SAP Kernel System Integration at IBM Research and Development

AIX/Linux system administrator: deployment of LPARs (Logical Partitions) for SAP Kernel Development
C/C++ SAP kernel development and integration to SAP HANA Database
C/C++ programming and software integration, support for SAP kernel on AIX system; development and testing on SAP VDI
Example: development of the ABEC Tool (AIX Build Environment Checker) to create SAP build environments for debugging process and benchmarking
Benchmarking and test execution of SAP kernels (test from the communication to the SAP HANA Database and to SAP NetWeaver) on AIX
Automate the SAP kernel build via Jenkins and benchmarking over crontab jobs
New C/C++ compiler design and testing (based on Clang++ and LLVM)
Customer ticket handling to resolve SAP kernel bugs and build failures
SAP kernel development with Rust programming language, migrating some sub-kernel projects from C/C++ to Rust because of Rust's memory safety model, ownership system, and concurrency features
Refactoring selected components in Rust and integrating them with existing C++ codebase via FFI

Christian Saba

Research Associate – AI Consultant

Leinfelden-Echterdingen

Last position:

Research Associate – AI Consultant at Fraunhofer IAO

Developed NLP and LLM POCs for use in manufacturing companies
Applied advanced machine learning algorithms to analyze production data and develop custom data pipelines for quality assurance
Designed and led the IAO basic seminar on AI in industry, including hands-on training modules

Eduard Kulm

Graphic Designer | Freelancer

Last position:

Freelance Graphic Designer at Self-employed

Creation of graphics for digital and print media for companies across various industries
Design of logos, business cards, flyers, posters, banners and other promotional materials
Website design including UI/UX design, responsive design and web development with HTML, CSS and JavaScript
Independent project management and on-time delivery leveraging Adobe Creative Suite, Sketch, Figma, InVision, WordPress and other design tools
Prioritization and multitasking in a home-office environment
Strong sense for image selection, layout and typography to achieve appealing results
Expertise in visual communication, branding, interactive and screen design, web banners, landing pages, sliders and headers
Effective design solutions focused on communication goals and audience engagement
Advanced digital image editing, retouching, complex compositions and professional corrections
Dedicated design of product packaging and labels with individual identity and brand strengthening
Qualification in Photoshop, Illustrator, InDesign, After Effects, Webflow, HTML/CSS

Waldemar Wall

Shopware Developer