Marc Matt - Freelance Data Specialist

Q: Where is Marc based?

Marc is based in Hamburg, Germany .

Q: What languages does Marc speak?

Marc speaks the following languages: German (Native), English (Advanced), French (Elementary), Japanese (Elementary) .

Q: How many years of experience does Marc have?

Marc has at least 23 years of experience. During this time, Marc has worked in at least 10 different roles and for 13 different companies . The average length of individual experience is 1 year and 4 months . Note that Marc may not have shared all experience and actually has more experience.

Q: What is Marc's latest experience?

Marc's most recent position is Freelance Data Specialist at BrightlySoftware – A Siemens Company .

Q: What companies has Marc worked for in recent years?

In recent years, Marc has worked for BrightlySoftware – A Siemens Company , RTL Data , Boldmetrics Inc , Spin – Tier Mobility , and Mediamarkt E-Commerce GmbH .

Q: Which industries is Marc most experienced in?

Marc is most experienced in industries like Information Technology (IT) , Media, Entertainment and Publishing , and Advertising . Marc also has some experience in Real Estate , Retail , and Telecommunication .

Q: Which business areas is Marc most experienced in?

Marc is most experienced in business areas like Business Intelligence , Information Technology (IT) , and Marketing . Marc also has some experience in Project Management , Logistics , and Supply Chain Management .

Q: Which industries has Marc worked in recently?

Marc has recently worked in industries like Information Technology (IT) , Media, Entertainment and Publishing , and Automotive .

Q: Which business areas has Marc worked in recently?

Marc has recently worked in business areas like Information Technology (IT) , Business Intelligence , and Supply Chain Management .

Recommended expert

Hamburg, Germany

Experience

Jul 2024 - Present

1 year 8 months

Freelance Data Specialist

BrightlySoftware – A Siemens Company

Migration of customer data from a private cloud to AWS
Optimizing data transformation jobs and migration from Talend to AWS Glue
Automation of all migration steps
Used technologies: AWS, Python, Lambda, CloudFormation, SQLServer, AWS Stepfunctions, Glue, PySpark

Oct 2022 - Jun 2024

1 year 9 months

Freelance Data Specialist

RTL Data

Integrating new recommendation models into the streaming feed
Optimizing performance and usability of the recommendation provision engine
Aggregation and integration of user seed calculations for real-time recommendations
Used technologies: GCP, Python, Kubernetes, Docker, ArgoCD, SQL, FastAPI, Bigquery, AlloyDB, Airflow (Cloud Composer), ArgoWorkflows

Jul 2022 - Sep 2022

3 months

Freelance Data Specialist

Boldmetrics Inc

Redesign data entry into DWH for serverless scalable real-time updates
Design of data architecture for DWH
Used technologies: AWS, Python, SQL, Kinesis Firehose, Redshift, MS SQL, dbt

Dec 2021 - Jul 2022

8 months

Freelance Data Specialist

Spin – Tier Mobility

Designing and establishing an MLOps workflow
Operationalizing ML models for real-time use cases
Used technologies: GCP, Bigquery, Kubeflow, VertexAI, Airflow (Cloud Composer), Docker, Python, SQL, Flask, dbt

Jun 2021 - Nov 2021

6 months

Freelance Data Specialist

Mediamarkt E-Commerce GmbH

Establishing a supply chain monitoring system
Implementing APIs to all logistics service providers and transforming them for company-wide reporting
Used technologies: GCP, Bigquery, Apache Beam, NodeJS, Airflow (Cloud Composer), Docker, Python, SQL, Flask

Mar 2021 - Jun 2021

4 months

Freelance Data Specialist

Janus AI

Redesign data centric processes for more automation and serverless environment
Used Technologies: AWS, Glue, Python, PySpark, SQL

Feb 2021 - Apr 2021

3 months

Freelance Data Specialist

Emma Sleep GmbH

Redesign Data Entry to DWH for serverless scalable real-time updates
Project management for implementing proposed change of architecture
Used Technologies: AWS, Kinesis, Fargate, Docker, SQL, Python, Glue, Redshift

Aug 2018 - Jan 2021

2 years 6 months

Data Engineering

Engel & Völkers Technology GmbH

Architecture of a Data Platform, including tool selection and data modelling
Implementing a Data Platform and integrating all available data source (internal / external)
Conception and implementation of CI/CD pipeline for the Data Platform
Modelling property value prediction for real time application
Used Technologies: Google Bigquery, Apache Beam, Apache AVRO, Python, Kubernetes, Docker, Jenkins, Tensorflow, SQL, Flask

Jan 2017 - Jul 2018

1 year 7 months

Head of Data Engineering / Machine Learning

Surfmedia GmbH

Responsible for a team of six, including personnel development
Architecture of the Big Data / Data Lake systems, including tool selection and data modelling
Project management of data- / machine learning projects
Responsible for the technology roadmap and advancement of all affected data systems
Conception of data pipelines and model selection for the development of Recommendation Engines and fraud recognition systems in a real time environment
Used technologies: HortonWorks Data Platform, Pivotal HAWQ, Pivotal Gemfire, Hive, Talend Big Data Plattform, Apache Nifi, RabbitMQ, Tableau, Java, Apache AVRO, Spring Boot, Apache Spark, Apache Zeppelin, Python, Tensorflow, SQL

Oct 2014 - Dec 2016

2 years 3 months

Lead of Business Intelligence / DWH

Surfmedia GmbH

Coordination and priorisation of all tasks concerning the team using agile methods
Responsible for six collegues
Conceptual design and development of a RealTime-DWH (Data Lake / lambda architecture) to provide a single source of truth for the whole group
Data modelling from data entry, using a push service, to the presentation layer of the Data Lake
Used technologies: HortonWorks Data Platform, Pivotal HAWQ, Pivotal Gemfire, Hive, Talend Big Data Plattform, Apache Nifi, RabbitMQ, Tableau, Java, Perl, Apache AVRO, Spring Boot, Apache Spark, Apache Zeppelin, Python, SQL

Mar 2012 - Sep 2014

2 years 7 months

Business Intelligence Analyst

Surfmedia GmbH

Conceptual design, development and operation of a DWH for the company group consisting of five companies
Conceptual design, choosing and introduction of a self-service BI system (reporting and visualization)
Developing a model for predicting orders
Customer analysis to optimize revenue in a social network
Used technologies: MySQL, Perl, Python, Tableau, Jedox, RapidMiner, Knime, SQL

Nov 2010 - Feb 2012

1 year 4 months

Database Consultant

EOS Information Services GmbH

Conceptual design, development and operation of a DWH for a Decision Engine for risk management
Conceptual design of risk management processes
Conception and development of a process for managing addresses using Perl and Uniserv
Operation and configuration of a high availability system for checking addresses, bank details and duplicates
Used technologies: Perl, Oracle, Uniserv, Zoot Decision Management, Java, SQL

Oct 2009 - Oct 2010

1 year 1 month

Datawarehousing Consultant

Key-Work Consulting GmbH

Migration of the sales reporting for a mail order company
Development of a statistical model to optimize sales planning of a mail order company
Development of a statistical model for a dynamic shipping schedule
Conception, development and operation of OLAP cubes
Used technologies: MS SQL, MS SSAS, Python, RapidMiner, FastStats, SQL

Oct 2008 - Sep 2009

1 year

Database Management

Coxulto Marketing Solutions GmbH

Target group determination and selection
Affinity analysis
Address management and duplicate checking
Administration and operation of the address database
Conception, development and operation of sales databases for telecommunication companies
Used technologies: SAS, MS SQL, MS SSAS, Perl, SQL

Jun 2008 - Sep 2008

4 months

Senior CRM Analyst

1&1 Internet AG

Conceptual design and development of a customer datamart for CRM analysis
Customer segmentation / up- and cross-selling potential analysis
Used technologies: MS SQL, MS SSAS, Sybase IQ, SQL

Apr 2007 - Jun 2008

1 year 3 months

Lead of Business Intelligence Consumer Products

1&1 Internet AG

Coordination and prioritization of all tasks of the BI team
Conception and development of KPI reports for the board of directors
Analysis of customer structures and churn prediction
Design and development of data marts
Used technologies: Perl, Java, Sybase IQ, instantOLAP, SQL

Mar 2003 - Apr 2007

4 years 2 months

Business Intelligence Analyst

1&1 Internet AG

Design and development of an automated reporting system for customer and contract inventory, as well as internet usage and customer behavior
Integration of all customer usage data from the company websites into the DWH
Coordination of all tasks between management and development departments
Analysis of ongoing new and existing customer campaigns
Used technologies: Perl, Java, Sybase IQ, instantOLAP, SQL

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Information Technology (6 years), Media and Entertainment (5.5 years), Advertising (3 years), Real Estate (2.5 years), Retail (1.5 years), and Banking and Finance (1.5 years).

Information Technology

Media and Entertainment

Advertising

Real Estate

Retail

Banking and Finance

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Business Intelligence (20.5 years), Information Technology (17.5 years), Marketing (5.5 years), Project Management (4 years), Logistics (1 year), and Supply Chain Management (0.5 years).

Business Intelligence

Information Technology

Marketing

Project Management

Logistics

Supply Chain Management

Skills

Project Management**
Classical – Excellent Knowledge
Agile – Excellent Knowledge
Programming Languages**
Sql – Expert
Perl – Expert
Python – Excellent Knowledge
Java – Excellent Knowledge
Map / Reduce – Good Knowledge
Sas Base – Basic Knowledge
Octave / Matlab – Basic Knowledge
Databases**
Mysql – Expert
Ms Sql – Expert
Maxdb – Expert
Postgresql – Excellent Knowledge
Pivotal Hawq – Excellent Knowledge
Hive – Excellent Knowledge
Pivotal Gemfire – Good Knowledge
Google Bigquery – Good Knowledge
Tools**
Tableau – Expert
Talend – Excellent Knowledge
Knime / Rapid Miner – Excellent Knowledge
Apache Nifi – Excellent Knowledge
Apache Spark / Pyspark – Good Knowledge
Python Pandas / Scikit – Good Knowledge
Apache Beam – Good Knowledge
Hadoop – Good Knowledge
Apache Zeppelin – Good Knowledge
Rabbitmq – Good Knowledge
Sas – Basic Knowledge
Software**
Ms Office – Expert

Languages

German

Native

English

Advanced

French

Elementary

Japanese

Elementary

Education

Sep 1998 - Feb 2003

University of Applied Sciences for Business and Design

Diploma in Business Administration (Business Informatics), MBA · Business Informatics · Pforzheim, Germany

Jun 1998 - Jun 1998

Goethe Gymnasium

German A-level Diploma · Gaggenau, Germany

Certifications & licenses

E&V Ready to Sell (real estate agent training)

Pivotal Gemfire

Talend Big Data Platform

Hortonworks Data Platform

Pivotal HAWQ

Text Mining and Analytics

Process Mining

Mining Massive Datasets

Uniserv: online edition Mail Retrieval

Uniserv: mailBatch under DQ Batch Suite

SAS Programming II: Data Management in the Data Step

Seminar: From Sybase ASE to Sybase IQ

Seminar: Practices and Working Techniques of Product Management

Business English Certificate Vantage

Seminar: Advanced Excel

Profile

Created

January 2025

Last Update

January 2026

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Marc based?

Marc is based in Hamburg, Germany.

What languages does Marc speak?

Marc speaks the following languages: German (Native), English (Advanced), French (Elementary), Japanese (Elementary).

How many years of experience does Marc have?

Marc has at least 23 years of experience. During this time, Marc has worked in at least 10 different roles and for 13 different companies. The average length of individual experience is 1 year and 4 months. Note that Marc may not have shared all experience and actually has more experience.

What roles would Marc be best suited for?

Based on recent experience, Marc would be well-suited for roles such as: Freelance Data Specialist, Data Engineering, Head of Data Engineering / Machine Learning.

What is Marc's latest experience?

Marc's most recent position is Freelance Data Specialist at BrightlySoftware – A Siemens Company.

What companies has Marc worked for in recent years?

In recent years, Marc has worked for BrightlySoftware – A Siemens Company, RTL Data, Boldmetrics Inc, Spin – Tier Mobility, and Mediamarkt E-Commerce GmbH.

Which industries is Marc most experienced in?

Marc is most experienced in industries like Information Technology (IT), Media, Entertainment and Publishing, and Advertising. Marc also has some experience in Real Estate, Retail, and Telecommunication.

Which business areas is Marc most experienced in?

Marc is most experienced in business areas like Business Intelligence, Information Technology (IT), and Marketing. Marc also has some experience in Project Management, Logistics, and Supply Chain Management.

Which industries has Marc worked in recently?

Marc has recently worked in industries like Information Technology (IT), Media, Entertainment and Publishing, and Automotive.

Which business areas has Marc worked in recently?

Marc has recently worked in business areas like Information Technology (IT), Business Intelligence, and Supply Chain Management.

What is Marc's education?

Marc holds a Master in Business Informatics from University of Applied Sciences for Business and Design.

Does Marc have any certificates?

Marc has 15 certificates. Among them, these include: E&V Ready to Sell (real estate agent training), Pivotal Gemfire, and Talend Big Data Platform.

What is the availability of Marc?

Marc is immediately available full-time for suitable projects.

What is the rate of Marc?

Marc's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.