Martin M. - Freelance Data Architect

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Mintraching, Germany

Experience

Jul 2023 - Aug 2023

2 months

Germany

Freelance Data Architect

Zeppelin

Evaluation and scoring of various technologies as future telematics platform: Kafka Streams, Spark, Splunk, Snowflake
Improve test framework and scalability of Telematics streaming service: Scala, Property-Based Testing, Kafka, Kafka Streams, Kubernetes

Jan 2022 - Aug 2023

1 year 8 months

Scala Node-RED

Github

Scala.js library for writing custom Node-RED nodes.
Developed from scratch, main maintainer.

Apr 2021 - Jun 2023

2 years 3 months

Magdeburg, Germany

Big Data Architect

Ultra Tendency

Implementation of a Big Data Record Linkage Pipeline: Cloudera Public Cloud, Spark, Hadoop, Hive, Kafka, Splink
Implementation of a CI/CD pipeline for the developed Big Data applications: Ansible, Gitlab CI, Docker, Kubernetes
Creation of a PoC for automatic validation and correction of data, as well as record linkage: Spark, Drools, Splink, Apache NiFi, Scala, Python
Set up of a new Big Data cluster for a European capital: Cloudera Private Cloud, Ansible, Kerberos
Migration of Big Data applications to the new cluster: Docker, Spark, Hive, Python

Aug 2020 - Aug 2023

3 years 1 month

Berlin, Germany

Software Architect

Xencura GmbH

Design of the architecture and implementation of a prototype for the use of Industry 4.0 processes for individualized cancer therapy: Petri Nets, Industry 4.0, Digital Twins, Scala

Apr 2018 - Oct 2020

2 years 7 months

Munich, Germany

Digital Innovation Architect

Wacker Neuson SE

Design and implementation of an algorithm to optimize the planning of production sequences subject to constraints: Scala, Constraint Programming, Constraint Based Local Search, SAP
Research, design and development of a platform for processing telematics data: Spark, Hadoop, Azure, Kafka
Analysis and improvement of telematics data quality: Python, Pandas, scikit-learn, Spark, Time Series Analysis, Active Learning
Design and establishment of a data science workflow: R, RStudio, Jupyter, DVC
Research, design and development of a central API Gateway which hides the complex system landscape of WN behind a simple interface: Scala, GraphQL, REST
Conception and assistance in the establishment of agile processes in the IT department: Scrum, Kanban, Pair Programming, Retrospectives, Root-Cause Analysis, Hypothesis-Driven Development

Jan 2016 - Aug 2023

7 years 8 months

Spark Excel

Github

Spark library for reading and writing Microsoft Excel files.
Developed from scratch, main maintainer.

Apr 2015 - Apr 2015

1 month

Warsaw, Poland

Probabilistic modelling with Scala

Scalar Conference

Introduction to Bayesian networks. Live coding example on how to do learning and inference using a Scala library.

Jan 2015 - May 2015

5 months

D3 Bayesian Network

Github

D3 extension for drawing Bayesian networks along with their conditional probability tables.

Aug 2013 - Aug 2013

1 month

Berlin, Germany

JRubymeets Scala

JRubyConf

Overview and best practices of how to use JRuby and Scala in the same project.

Nov 2008 - Apr 2018

9 years 6 months

Passau, Germany

Innovation Manager and Copartner, Team Lead Innovation Hub

crealytics GmbH

Implementation of an algorithm for automatically generating, evaluating and selecting ad copies: Ruby, Branch and Bound
Design and implementation of a method for creating statistical estimations of conversion rates: R, RStudio, Knime, Rapidminer, Regression Trees, Bayesianmodels, Support Vector Regression
Implementation of an algorithm for creating statistical models of search engine auctions and maximizing profit given additional constraints: Scala, Bayesian linear regression, spline models, Computational Algebra, quasi-Newton optimization
Prototyping of various algorithms. Coordination between data science and engineering teams: MinHash, Bayesian Vector Auto-Regression, ARIMA, Jupyter, RStudio, Spark
Creation of an ontology for products, brands and relevant search terms: Natural Language Processing, Neo4j
Design and implementation of an algorithm for optimal matching of products to search queries: Scala, Branch and Bound, Graph DB, ontologies
Implementation of a data processing pipeline: Scala, Spark
Conception, submission and execution of a government-funded research cooperation project (ZIM Koop) with the University of Kassel: Java, Exponential Smoothing, Bayesian Models, Support Vector Machines, Graph DB, Ontologies
Conception and establishment of agile processes in the entire company: Scrum, Kanban, Pair Programming, Retrospectives, Root-Cause Analysis, Hypothesis-Driven Development