Data Migration Expert in Stuttgart

Sercan T.

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 placement platform that directly connects relatives of people in need of care 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 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 the sole 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 using presigned URLs to verify 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 the placement process.
Development of 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.

Carlos M.

Implementation in Pimcore/Shopware

Last position:

Implementation in Pimcore/Shopware

Consulting, design, analysis, software architecture and development
Design, development and implementation of a Pimcore environment and connection of several external API systems in a Kubernetes environment, as well as various PIM and ERP systems
Technologies: Unix environment, design, Symfony development, design, PHP 8+, software architecture, MySQL/SQL, Shell Script, Git Dev Ops tasks, AI coding assistance, Pimcore 12, Shopware 6
Team size: >10 people

Will O.

Solution Architect

Esslingen

Last position:

Solution Architect at Polizei Behörde Stuttgart

Designed a migration strategy for WLS applications to BKA Cloud and Stack IT
Created a hybrid cloud for internal testing and development with Kubernetes
Transformed the IT landscape from an outdated monolithic architecture to a cloud-based architecture
Integrated new CI/CD processes using Azure Pipelines
Quadrupled the processing throughput for personnel security checks
Migrated personnel security screening applications to Docker-based applications
Implemented CI/deployment pipelines using Azure DevOps
Environment: Java Springboot, Kubernetes, Oracle Weblogic, OpenID, Camunda, JUnit, TOGAF

Emmanuel L.

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, planning, statistics and billing
Design and implementation of the architecture, external API integrations and operations
Stack: Laravel 13, React 19, TypeScript, PostgreSQL, Redis and Stripe

Robert W.

Data Architecture Manager

Last position:

Data Architecture Manager at Accenture

Data Migration Engine / Data Migration from proprietary source systems to SAP/S4 (SAP S/4 HANA Migration cont.)
Development data authorization Concept
Conception of system architecture / data architecture / data integration – continuous extensions
Development conceptional / logical (MDM) data Model - continuous extensions

Wael M.

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

Eduard E.

E-Commerce | Shopify Plus Expert

Last position:

Senior Shopify & Shopify Plus Consultant | Project Management, E-Commerce Management & Development at DIGIDY

With DIGIDY, I support companies and agencies with the planning, development and ongoing improvement of Shopify and Shopify Plus stores. As a freelance Senior Shopify Consultant, I combine strategic consulting, technical implementation and operational E-Commerce Management – for D2C brands, B2B companies and internationally oriented online retailers.

I support existing teams as a Shopify specialist, take over the management of projects and sub-projects, or support companies as an external E-Commerce Manager. I translate business requirements into specific technical solutions and coordinate implementation with internal teams, agencies and other service providers.

My areas of focus:

Consulting & Project Management Shopify consulting, requirements analysis, technical planning, feasibility checks and selection of suitable apps and integrations. Project planning, prioritization, coordination and quality assurance through go-live and beyond.
E-Commerce Management & Ongoing Support Operational and strategic development of existing stores: identifying optimization opportunities, planning measures, improving store processes and coordinating implementation with marketing, development and logistics.
Shopify Development & Theme Editing Custom programming with Liquid, JavaScript, HTML and CSS. Theme development, theme customization and implementation of UX/UI designs, as well as development of custom sections, blocks, templates and store features.
Conversion Rate Optimization (CRO) Store audits and optimization of the customer journey – from navigation, search and filters through product pages and the buy box to the cart and checkout. Focus on mobile user guidance, clear purchase decisions and fewer abandoned purchases.
Shopify Plus & B2B E-Commerce Planning and implementation of B2B stores and retailer portals with custom catalogs, price lists, customer approvals and ordering processes. Checkout customizations with Checkout Extensibility, Checkout UI Extensions and Shopify Functions.
Internationalization, Shopify Markets & Multilingual Stores Setup and optimization of international store structures with country-specific markets, languages, currencies, prices and product ranges. Implementation of translation processes and localized content, as well as coordination of domains and URL structures.
Complex Shipping Requirements & Shipping Planning and configuration of shipping profiles, shipping zones and shipping rates. Implementation of product-, customer-, country- and postal-code-dependent shipping rules, as well as coordination of multiple warehouse locations and fulfillment processes via Shopify, apps and integrations.
Tax Settings & B2B Tax Logic Technical configuration of tax settings, net/gross prices, tax exemptions and VAT ID processes according to the requirements of the company and its tax advisors – coordinated for markets, customer groups and shipping locations.
Store Setup, Relaunch & Migration Support for Shopify projects from planning through data migration and system integration to launch. Support when switching from existing store systems to Shopify or Shopify Plus.
Integrations & Automation Integration of ERP, inventory management and other third-party systems via APIs and webhooks. Automation of recurring processes with Shopify Flow and custom integrations.
AI-Assisted Development, Vibe Coding & MCP Use of Cursor, Codex and AI-assisted development tools for prototypes, custom features and automations. Use of the Model Context Protocol (MCP) to integrate documentation and tools into development processes – with technical review and a focus on maintainable code.

Collaboration as needed: project-based support, management of projects and sub-projects, long-term agency cooperation or ongoing support as an external E-Commerce Manager and Shopify Consultant.

Stuttgart · Remote worldwide · German and English

Boas B.

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

Güven M.

SAP EWM Manager

Aichtal

Last position:

SAP EWM Manager at MHP

Lead consultant focusing on EWM, WM, MM, LE, SD, TM in an S/4HANA system
Design, implementation and rollout of a new S/4HANA logistics system as part of the OneLog project for battery management across multiple plants
Industry: Automotive
Overall responsibility for contributing to the design, realization and successful deployment of an SAP S/4HANA logistics system
Managing and coordinating rollouts in the roles of EWM Manager, Rollout Manager, and project and subproject lead
Providing strategic advice to clients on logistics processes, system architecture and best-practice approaches
Responsible for creating, aligning and quality-assuring IT specifications for technical enhancements
Leading customizing activities to optimally map complex business processes
Planning, managing and executing system, integration, functional and regression tests to ensure a stable production environment
Overall responsibility for cut-over, go-live and hypercare phases including data migration from SAP WM to SAP EWM
Planning, organizing and conducting user training sessions and on-site support to ensure sustainable system adoption
Designing and implementing a prototype for a shuttle solution in SAP S/4HANA Manufacturing Logistics integrating SAP TM and SAP EWM

Zouhair H.

SAP S/4 HANA Developer

Last position:

SAP S/4 HANA Developer at BGZ Essen

Explorer phase: document preparations for development
Getting started with the BTP documentation
Documentation of WRICEFs
Programming guidelines with consideration of Clean Core
Analysis of customer programs to be migrated
ABAP call monitoring (SCMON, SUSG)
Creation of concept documents for the project

Ahmed F.

Senior Lead Engineer (Freelance)

Last position:

Senior Lead Engineer (Freelance) at Atruvia AG

Development of a wealth management application for investing in foreign currencies
Full-stack development with Angular, Spring Boot, OpenShift, Oracle DB, Kafka
Design and implementation of a microservice architecture
Integration into Atruvia's BWS system and connection of multiple interfaces between Atruvia and DZ Privatbank
Greenfield development of the application from the ground up
Technical responsibility for architecture and interface design
Close collaboration with business units and external stakeholders

Christoph D.

Agentic RAG AI System