01/20/2026 updated

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Software Developers & Business Consultants

Granada, Spain
Worldwide
Master of Economics
Granada, Spain
Worldwide
Master of Economics

Profile attachments

CV MK.pdf
CV_MarvinStein_2026.pdf

JavaScriptAmazon S3HTML5Data ValidationWeb ScrapingWeb DevelopmentDjangoEspañolPython (Programming Language)MongoDBSQL DatabasesWeb ApplicationsTestingGlobal Project ManagementData ScienceReact.jsVue.js
Ich lege großen Wert darauf die Bedürfnisse meiner Kunden im Detail zu kennen. Mein starker wirtschaftlicher Hintergrund aus dem Studium und praktische Arbeitserfahrung in verschiedenen Unternehmen helfen mir, technische Lösungen immer im Kontext des gesamten Geschäftsprozesses zu sehen.

Ich habe den Anspruch Kunden in regelmäßigen Feedback Terminen Fortschritte zu präsentieren und neue Features direkt gemeinsam zu testen. Dieses enge Feedback spart Zeit, reduziert Missverständnisse und führt zu besseren Ergebnissen. Nach Abschluss der Entwicklung fallen oft noch potentielle Optimierungen auf wenn echte Nutzer mit der Software arbeiten. In dieser Phase bin ich jederzeit zu erreichen und kümmere mich um Probleme meistens schon am selben Tag.

Aus technischer Perspektive bringe ich alle Vorraussetzungen mit um Kunden von einer Idee oder einem Problem bis zu einer fertig entwickelten Lösung zu begleiten. Das kann von einer modernen Frontend Entwicklung einer Webseite oder einem Skript zur Datenauswertung bis zu hochkomplexen individuellen Webapplikationen reichen.

Mein TechStack: React/Vue.js, Python (Django Framework), SQL Datenbanken / MongoDb / AWS S3

Einen Einblick in meine bisherigen Projekte findet ihr auf der Webseite: www.itmar-solution.de

Experience

Professional experience5 - 10 years
Freelancer since2022

Languages

GermanNative speakerEnglishFluentItalianGoodSpanishFluent

Project history

Conpaw - Amazon Shop Consulting

Conpaw

Marketing, PR and design

10-50 team member

Connect to Amazon API's and data processing:
Conpaw is one of our oldest partners and a very special one too. The recipe for success here lies in the high level of mutual trust and the continuous creative exchange of communication.
Conpaw is one of the specialists for advertising on amazon in Germany. With data driven decisions they optimise their clients ads campaigns so they can receive the maximum value from their marketing. They use a mixture of different softwares to achieve their goals.
Since the beginning of our partnership we connected different data sources and combined them in google sheets with tables and various visualizations as well. Their team can 24/7 access key data in just one place to make relevant decisions, create reports for their clients and as well optimise the marketing expenses.

Additional Features:
- Individual Mailalerts if certain values exceed a threshold
- Summary of Keywords
- Google Cloud and Lockerstudio connection

Offerhub - Sales Platform

Geba

Energy, Water & Environment

10-50 team member

Software-as-a-Service Plattform - Including Front/Backend and UX/UI Design.

Together with our client Geba we developed Offerhub. It is an innovative web application which brings your sales process to a new level.

With offerhub you can create individual proposals for you clients in a fast and easy process. With this powerful tool you can perfectly match the needs of your clients.

Admin-Dashboard:
An Admin of the company can upload and manage basic data, graphs, videos and many more things to create project templates.

Project Templates:
With the project templates your sales team can easily adjust the data for the individual needs of your clients in less than 5 minutes.

Userfriendly UX Design:
The final proposals can be shared with your clients through an individual link. Your client receives an interactive proposal with different PDF files, images, graphs, text and videos.

Have a look at our landing page and test the software for free: https://www.itmar-solution.de/offerhub

YDDP – Your Due Diligence Provider

Ziopora

Banking & Financial Services

< 10 team member

YDDP is a platform developed for private clients as well as for Swiss banks to carry out due diligence processes in a secure environment.
Users can register on the platform and purchase credits to use various tools in an anonymous and secure environment. Most of the tools are focused on retrieving public information about certain companies. We developed both Frontend and Backend.
Additionally we were responsible for coordinating strategic partner discussions with both the Italian and Swiss authorities in order to offer the best possible technical product.

Registration and credits:
Users can easily register and add credits to their account to gain access to various tools and information.

Diverse sources of information:
The platform offers general information on companies from Switzerland, Italy, England and much more.

Specific documents:
Users can obtain specific documents such as balance sheets for companies and individuals to make informed decisions.

Portfolio


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