Marc Matt - Freelance Data Specialist

Hamburg, Germany

Experience

Jul 2024 - Present

11 months

Germany

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

Germany

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

Germany

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

Germany

Freelance Data Specialist

Spin - Tier Mobility

Designing and establishing an ML Ops 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

Germany

Freelance Data Specialist

Mediamarkt E-Commerce GmbH

Establishing a supply chain monitoring system
Implementing APIs to all Logistic Services Providers and transforming them for use in a companywide reporting
Used Technologies: GCP, Bigquery, Apache Beam, NodeJS, Airflow (Cloud Composer), Docker, Python, SQL, Flask

Mar 2021 - Jun 2021

4 months

Germany

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

Germany

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

Germany

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 2016 - Jul 2018

1 year 7 months

Hamburg, Germany

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

Hamburg, Germany

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

Hamburg, Germany

Business Intelligence Analyst

Surfmedia GmbH

Conceptual design, development and operation of a DWH for the company group consisting of five companies
Conceptual design, chosing 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

Hamburg, Germany

Database Consultant

EOS Information Services GmbH

Conceptual design, development and operation of a DWH for a Decision Enginge for risk management
Conceptual design of processes for risk management
Conception and development of a process for manageging 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

Karlsruhe, Germany

Datawarehousing Consultant

Key-Work Consulting GmbH

Migration of the sales reporting for a mailorder company
Development of a statistical model to optimize sales planning of a mailoder 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

Stuttgart, Germany

Databasemanagement

Coxulto Marketing Solutions GmbH

Target group determination and selection
Affinityanalysis
Addressmanagement and duplicates check
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

Karlsruhe, Germany

Senior CRM Analyst

1&1 Internet AG

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

Apr 2007 - Jun 2008

1 year 3 months

Karlsruhe, Germany

Lead of Business Intelligence Consumer Products

1&1 Internet AG

Coordination and priorisation of all tasks of the BI team
Conception and development of KPI reports for the board of directors
Analysis of cusomter 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

Karlsruhe, Germany

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 behaviour
Integration of all customer concerning usage data of 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