Amazon S3 Experts in Frankfurt

Michael H.

Senior Frontend Engineer · Frontend Tech Lead · Lead UI Engineer

Kelsterbach

Last position:

Frontend Developer at RTL Tech

Development and optimization of the RTL+ frontend application for SmartTV and set-top box platforms with React and Next.js.
Key role in the technical coordination of developers within the team and in coordinating implementation.
Central interface to adjacent teams to simplify development processes and improve cross-team alignment.
Improved frontend performance, stability, and rendering behavior on low-powered devices in a restricted runtime environment.
Implemented a frontend testing strategy with Jest, React Testing Library, and Playwright.
Implemented accessibility improvements according to WCAG 2.2 and WAI-ARIA.
Integrated Didomi Consent Management as a contribution to increasing ad monetization on streaming platforms.
Used AI-supported engineering workflows with Cursor for structured implementation, refactoring, and faster problem solving.

Technologies used: React, Next.js, TypeScript, JavaScript, GraphQL, Apollo Gateway, Zustand, Tailwind CSS, Styled Components, React Testing Library, Playwright, Jest, HTML5, CSS3, AWS Lambda, EC2, CloudFront, S3, GitLab CI/CD, NX, Cursor

Kevin F.

Senior Consultant and Platform Engineer

Frankfurt

Last position:

DevOps and Platform Engineer at DB Systel GmbH

Error analysis and fixes including performance optimization of the in-house developed platform API
Change and incident management in day-to-day operations
Responsible for compliance with security and compliance requirements
Vendor management for software development and maintenance
Planning and execution of migration of legacy services to a cloud native platform

Role in the project: project staff, implementation team

Used skills: requirements analysis, IT service and application management, IT operations, error analysis and performance optimization, software maintenance and lifecycle management

Project environment: Cloud Native Platform (Kubernetes, Crossplane, AWS, ArgoCD, Grafana)

Umut G.

Freelancer

Frankfurt

Last position:

Data Architect at BA Technology

I am an experienced data engineer specializing in end‑to‑end data integration, cloud DWH architectures, and high‑quality, governed data products.

I delivered following projects and engagements as a freelancer.

Data Migration of CRM System for AL-FA Objekt Service Gmbh
Microsoft Software Resales Partnership

I am looking for freelance roles like: Freelance Data Engineer Cloud Data Warehouse Architect Data Modeling & Architecture Consultant MDM & Data Governance Specialist BI & Analytics Developer

Technical Focus Areas

Data Engineering & Integration: SQL Server/SSIS, Informatica PowerCenter/IDQ, Talend, Kafka, Azure Data Factory – Delta/CDC/ELT patterns, robust pipelines, monitoring/recovery, data lineage & impact analysis, medallion architecture Bronze/Silver/Gold layers
DWH & Cloud: Azure SQL / Data Lake / Synapse, AWS Redshift/S3, on‑prem SQL/Oracle – scalable data marts with a strong cost/benefit focus.
Data Modeling: Atomic (Inmon) and Dimensional (Kimball), Data Vault (Linstedt), Domain‑Driven Design, clear lineage & contracts.
MDM & Governance: Informatica MDM, IBM MDM, stewardship processes, data quality rules, survivorship/XREF, catalog/glossary, SIF/BES/REST publication.
Analytics/BI: Power BI, SSAS, Cognos – business‑ready, maintainable data products.

Svyetoslav P.

CTO

Last position:

CTO at Skar Audio

Main developer in an online retail company
Built an online shop using the Next.JS React framework
Integrated the site with dozens of third-party apps using REST and GraphQL APIs
Built a backend for order management, warehouse management (with iPhone app), and supply management
Automated invoicing and finances with QuickBooks

Ulm P.

Freelance IT Specialist

Steinbach (Taunus)

Last position:

DataStage ETL Expert at ING Bank

Datastage 11.7, dbt, Oracle 19, Python 3.12 / PySpark 3.5, Azure GitHub, Azure DevOps, Automic
Development of migration jobs to transfer data from the collection DWH to the new Risk Mart, as well as development of ETL pipelines to migrate historical data from the old Mart to the new Risk Mart.
Storage of the silver layer on Hadoop and the gold layer in Oracle.
Translation of DataStage jobs into dbt to publish reporting data in Google Cloud to a PostgreSQL database.
Creation and optimization of complex SQL queries for data extraction from a data vault, taking into account historical data in the point-in-time tables.
Creation of Oracle table definitions (DDL) and adjustment of existing stored procedures.
Versioning changes in GitHub and deployment via the CI/CD portal.
Refactoring long-running DataStage jobs into Python using PySpark to reduce server load.
Migration of SAS scripts to PL/SQL, including new development of distribution functions that have no direct equivalent in Oracle.
Development of Automic jobs to run DataStage pipelines and Python scripts (PySpark jobs) that control the population of the SME and institutional risk tables in the Risk Mart and perform business calculations.
Participation in the agile process, including creating user stories, estimations, and planning in Azure DevOps.
Handling Azure DevOps tickets and close collaboration with testers and business teams for error analysis and resolution.

Ashkan Z.

Microsoft Azure Senior Data Engineer / Senior Data Scientist

Kelkheim (Taunus)

Last position:

Microsoft Azure Senior Data Engineer / Senior Data Scientist at Vattenfall Europe

Advising on the use of analytics and BI tools and services in the Microsoft Azure stack (e.g. MS Fabric, Synapse Workspaces and dedicated SQL pools, SQL Database, PostgreSQL, Snowflake, Databricks, Data Factory, SSIS, Analysis Services, Function Apps, Power BI, ML)
Independently designing analytics solutions with Python, SQL, etc.
Designing and implementing ETLs and data pipelines
Creating and maintaining APIs
Independently applying CI/CD, testing, and version control
Data modeling
Model development and optimization
Anomaly detection with AI
Predictive analytics

Used technologies:

Snowflake
Fabric
Azure Synapse Analytics
Azure DataFactory
Azure Data Lake
Azure DevOps
Databricks
Spark
CI/CD
SQL Database
Python
Power Platform

Anton R.

AI-Engineer

Last position:

AI-Engineer at Publicly traded company, industrial safety technology

Designed and implemented the agent-based AI architecture for a company-wide platform to securely deploy LLM-based agents
Designed and implemented end-to-end RAG pipelines from multiple sources: document preprocessing, chunking strategies for different document types, embeddings, retrieval with re-ranking, and robust prompt orchestration
Developed a modular context engineering framework with skill architecture, context isolation, and dynamic resource management; human-in-the-loop control for enterprise tool integrations
Built the CI/CD pipeline, testing strategy, tracing on the software side as well as automated LLM and agent evaluations, red team testing and tracing, and handed over to a reproducible production environment (ISO27001 and SOC2 compliant)

Kevin M.

Senior Python Backend Engineer

Obertshausen

Last position:

Backend & Infrastructure Engineer at Mileo Systems GmbH

Engineered production-ready Azure environments using Terraform, ensuring consistent infrastructure parity across VNets and Resource Groups
Implemented Microsoft Fabric tenant and workspace architecture for multi-stage Medallion data processing pipelines
Designed secure data pathways using Managed Private Endpoints for isolated Azure Storage access
Managed Service Principals and authentication tokens for secure REST API integrations

Judith B.

Power BI / Tableau / SQL / GA4 Data Analyst & BI Developer

Last position:

BI & Analytics Consulting

Analysis of web and campaign performance to derive actionable insights for marketing and growth optimization
Implementation and maintenance of tag management solutions to ensure reliable and consistent data collection
Continuous development and optimization of reporting structures with a focus on scalability and data quality
Conducting regular deep-dive analyses and leading monthly stakeholder sessions to present findings and align on optimization measures
Designing and managing end-to-end data flows from data collection to visualization
Tools: GA4, Google Tag Manager, Looker Studio, Airbyte, BigQuery

Jin-Ho Y.

Server Migration Consultant

Last position:

Server Migration Consultant at Unknown Client

Linux server migrations: planning and execution of the migration with SLES Linux deployment of VMs in VMware 8.0
Guiding colleagues on configuring Linux VMs with vSphere Auto Deploy
Application operations: ensuring smooth operation of applications on migrated servers
Operations manuals: revising existing manuals, updating and creating new ones as needed
Reviewing service offers: adjusting and optimizing service offerings of external providers
Logistics software, Red Hat Linux, Ansible, Confluence / Jira

Peter W.

Program and Project Manager / Internal Auditor / CISO

Last position:

ISO 27001 Auditor for health insurance archive system at Health insurance company

The replacement of the existing archive system (document management system – DMS) on a host-based platform is well advanced.
The internal audit is meant to ensure the company's quality standards.
GDPR
ISO 27001 ff.
BSI
DORA
Patient data regulations
Host / Cloud / S3 / Container / highly scalable / Nuxeo
Budget: 50,000
Team: 1

Jonas W.

Frontend

Frankfurt

Last position:

Fullstack Developer at Soulven Agency

Working for customer and internal projects ranging from B2C, B2B applications
Development and maintenance of customer-facing and internal applications across B2C and B2B domains
Responsibility for technical direction, architectural decisions and code quality standards
Design and implementation of scalable application architectures, including modular frontend and service-oriented backend structures
Conceptual planning and technical execution of the agency website relaunch in Angular
Rapid prototyping and MVP development for B2B customer projects in the pharmaceutical sector with Vue.js
Creation of first MVPs for 3D rendering–based products, including real-time visualization and interactive experiences
Strong UX/UI expertise with a focus on gamification, user engagement and conversion-driven interfaces
Close collaboration with product management, design and stakeholders to translate business requirements into technical solutions
Agile software development using Scrum, including sprint planning, reviews and retrospectives, supported by Azure DevOps
Full-stack development using React, Angular, TypeScript, Vue.js, HTML5, CSS3/SCSS, C#, .NET, Node.js, RESTful APIs, Unity, Azure DevOps, Git and CI/CD pipelines

Krunal P.

Technical Project Manager

Liederbach am Taunus

Last position:

Technical Project Manager at Moon Technolabs Pvt. Ltd.

Manage end-to-end delivery of software projects across healthcare, gaming, and communication domains.
Serve as Project Manager, Product Owner, and Scrum Master for multiple Agile teams.
Oversee scope definition, sprint execution, and delivery tracking using Jira and Confluence.
Design technical architectures and API strategies integrating Twilio, CRMs, and VoIP systems.
Lead AI/ML projects implementing recommendation engines and automation workflows.
Support pre-sales with effort estimation, technical documentation, and proposal reviews.

Tan P.

DevOps & Fullstack Engineer

Hanau

Last position:

DevOps Engineer in the DevOps Team at Rise-World

Implementation of specified DevOps solutions to automate infrastructure (Terraform, Bicep, CloudFormation, Ansible) on-premises datacenter (Ovirt, Proxmox, Ceph Cluster, MinIO) and private cloud.
Administration, configuration and implementation of CI/CD DevOps pipelines (GitLab, GitFlow) to support development process (Artifactory, Prometheus, Istio, service mesh, Helm Chart, OpenShift (Red Hat Enterprise) / Kubernetes cluster), Red Hat Satellite.
Administration, setup, monitoring and patching of Linux infrastructure based on Red Hat Enterprise for Dev, Test and QA.
Use of Scrum and Kanban methods.
Administration, configuration and implementation of security standards for deploying on Dev, Test, QA and Prod stages of the new ePA applications.
Development of new plugins and add-ons needed on current infrastructure.
Database support.
Data analytics support (Python, Spark, Pandas, Power BI, Splunk Enterprise).
Implementation of best practices for DevSecOps and BizDevOps using GitOps (ArgoCD), Streamlit framework, Semaphore Ansible UI.
Configuration and testing of iperf, uperf, sysbench using benchmark-operator for external source data and IoT/MDM devices, creating reports via ELK / OpenSearch.
Building a new Databricks platform to collect and analyze big data from different sources and IoT devices into Hadoop framework (Python, Pandas, PySpark, Power BI, Apache Airflow).
Building backend data aggregation and processing to automate configuration deployment between different OpenShift clusters and big data framework (Python, Pandas, PySpark, Apache Spark, PostgreSQL, Django 2, Ansible Automation, Jira JSM).
Building a new ML pipeline platform using Kubeflow, TensorFlow, KServe.
Data extraction, transformation and loading from different data sources including structured and unstructured data to analytic DWH / big data cluster using Python, Pandas, Polars, Power BI, Django backend and PostgreSQL.
Setup of new DevOps Test and QA HashiCorp Vault cluster for PKI and IAM.
Configuration and testing of automated patching based on CVSS score, SIEM-integrated CVEs.
Use of Nexpose and InsightVM to scan vulnerability events in network, host, container and application.
Design and implementation of secure and scalable AWS architectures including VPC, EC2, S3, RDS and Route53 and similar setups on Azure and GCP.
Automated system provisioning and deployment using CloudFormation templates.
Configuration of IAM roles, policies and permissions to ensure secure access control.
Patch management, backup automation and disaster recovery setup on AWS infrastructure.
Monitoring and optimization of system performance using AWS CloudWatch and AWS Trusted Advisor.
Support of VMware services (vSphere, Aria, Horizon) and the virtual desktop environment.
Development and maintenance of CI/CD pipelines using Jenkins, GitLab CI/CD and AWS CodePipeline with interface to Nutanix.
Configuration of AWS CloudWatch to monitor application performance and system events.
Planning and execution of migration of on-premises applications to AWS cloud platforms.
Deployment of containerized applications using Docker and Kubernetes in AWS environments.
Deployment of internal software packages between availability zones using AWS CodeDeploy.
Building and deploying ML models using Scikit-learn, XGBoost and Spark MLlib including hyperparameter tuning, model evaluation and production deployment.

Mahesh S.

Azure Solution Architect