Learn Data Engineering

The ultimate Data Engineering Academy. Teaching you everything you need to become a Data Engineer or add Data Engineering to your skillset. Proven system through my 10+ years of experience, over 2,000 students, over 50hours of video training material.

Founder

Udemy

I create free data & AI courses on Udemy for Data Engineers, Analysts, Scientists and beginners.

Course Author & Instructor

Kretz Media

At Kretz Media, we help innovative companies share their story and connect with the right audience. We specialize in creating authentic, high-impact content that makes complex topics understandable – and your brand unforgettable.

Whether it's a YouTube product demo, a livestream, a branded online course, or a strategic LinkedIn campaign – we turn your innovation into media that resonates.

LinkedIn

In this course you learn everything you need to know to design a NoSQL graph database and implement it in the cloud.

LinkedIn Learning Instructor

Bosch Rexroth

Data Lab Team Lead

Data Engineering Team Lead

Data Engineer

SALT Solutions GmbH

SAP Consultant

Hey there! I'm Andreas Kretz, your dedicated guide to the exciting realm of Data Engineering and the founder of the Learn Data Engineering Academy. With over years of specialized coaching experience, I've had the pleasure of helping more than 2,000 students reach their goals in this essential field.

I bring over 8 years of experience in Corporate Data Science, 14+ years in Computer Science and IoT, and a robust background as a Data Engineering and Data Labs Team Lead. My journey in Data Engineering has garnered global recognition, including being named a LinkedIn Top Voice in Data Science & Analytics in 2018, 2019, and 2024.

Here's what I do:
➡️ Learn Data Engineering Academy
I’ve trained over 2,000 students through my Academy, offering 30+ in-depth courses and projects with over 55 hours of video content, covering everything you need to excel in Data Engineering.

➡️ Media Work
In 2024, I helped my media partners achieve significant brand awareness, resulting in 1.21 million post views on LinkedIn, 250,000 video views on YouTube, and 235,000 sent emails with a 40% open rate. My efforts have built a vast network of over 100,000 engineers and scientists.

➡️ YouTube
On my YouTube channel, I simplify complex Data Engineering concepts and share valuable insights from the Academy. Join me for livestreams with industry experts, workshops, tool reviews, and deep dives into the latest architectures. It’s your go-to source for staying ahead in the data world.

If you're passionate about Data Engineering, eager to learn, or curious about the latest tools and techniques, hit subscribe. Let's explore the world of Data Engineering together!

Andreas Kretz

PAYGo Lab

• Participating in streamlining the data extraction and loading processes to onboard new clients and perform monthly data updates;
• Setting up data  security standards ensuring privacy and security.
• Setting up data quality checks, ensuring high standards of data accuracy and timeliness.

Data solutions consultant

IPC - Internationale Projekt Consult GmbH

IPC - Internationale Projekt Consult GmbH offers energy and financial solutions to international financial institutions and development agencies.
Improving Credit Monitoring in Partner Financial Institutions:
• Cooperated directly with partner banks to identify the data requirements necessary for the
implementation of the reporting tool, which included the data storage, data transformation, and
reporting layers;
• Customized the tool to meet additional credit reporting requirements specified by the client;
• Conducted handover training.

EBRD Regional Small Business Programme (RSBP) for Central Asia:
• Prepared an e-learning course on data literacy to introduce the standard process for data
analytics project planning.

Improving the Quality and Accuracy of Data Submitted by Financial Institutions to the Credit Control
Department in the Central Bank of Iraq:
• Gathered requirements for a data quality validation tool to automate validation checks on
uploaded data performed by the Credit Division staff in the Central Bank of Iraq (CBI);
• Developed the data quality (DQ) validation tool and DQ scorecard to track the data quality scores
of financial institutions across all data submitted and over several periods;
• Trained end-users on the tool and data quality scorecard, as well as best practices in data quality.

External Consultant

Essential Data backpack

Goodnature Zambia:
• Setting up the data infrastructure which included setting up (1) ETL to extract data from the existing databases and Software as a service (SaaS), (2) data warehouse, (3) BI/ dashboarding tool.

SGTD:
• Designed, developed and implemented reporting solutions for a container terminal using Qlik
Sense;
• Automated data transformation tasks for operations reports using Excel VBA.

Learn Data Engineering (https://learndataengineering.com/):
• Designing and participating in the design of online courses and practical labs for aspiring data
engineers on data management (data modelling) and data engineering tools;
• Preparing e-learning courses (actual recording and lab preparation materials).

Data Consultant

Easy Solar

Easy Solar is a pay-as-you-go solar distribution company operating in Sierra Leone and Liberia.
• Implementing DataOps practices, including testing mechanisms and data quality checks;
• Modernizing the existing data warehouse by changing infrastructure (data extraction tools to pull
data from raw sources; data processing tools to consolidate tools that are being utilized for data
transformation) and data flow (redesigned core data models to reflect the business processes);
• Redesigning data models for the internal operational apps.

Simusolar, Inc.

Simusolar is a distributor and financier of solar-powered equipment such as water pumps and fishing lights.
•	Collaborated on design and implementation of the loan management and ticketing systems that was previously run on AWS Cloud, costing about 4 times the current solution.
•	Analyzed ways of loading the existing data into a format suitable for the new environment; performed field mapping between 4 systems; prepared transformation rules for data migration; conducted actual migration with REST API and database-to-database migration); performed post-migration data testing and ongoing data validation and data quality assurance.
•	Designed Extract Load Transform (ETL) pipelines  to facilitate the extraction and processing of data from the newly implemented applications and developed KPI dashboards and operational reports to provide visibility into the performance of different functions,

enable.digital

Enable offers flexible, future-proof, digital technology and data management solutions to clients in emerging markets.
•	Participated in the data management assessment to evaluate existing data management practices, needs and resources across clients, and recommendation preparation for improvement.
•	Supported digital transformation projects with managing end-to-end data migration which included migration planning, legacy data assessment, system mapping, building and testing of migration code, migration outcome testing, and post-migration data quality assurance.
•	Deployed, monitored, and maintained BI infrastructure across enable's customers which included setting up (1) ETL to extract data from the existing databases and Software as a service (SaaS), (2) data warehouse and operational data store, (3) end-user / BI/ dashboarding tools, and (4) metadata layers.

PEGAfrica

PEG delivers Pay-As-You-Go asset-based financing to consumers who lack both access to reliable electricity and formal banking services.
•	Developed zonning dashboards/app based on the internal sales and credit performance and publicly accessed electrification and socio-economic data and crop calendars to decrease customer acquisition cost.
•	Automated data transformation tasks performed by the data team. 
•	Guided the organization (Data & Analtyics department) on matters related to data management, quality and analysis with supervisory responsibilities for all staff assigned to the Data (Business Intelligence) department.

PwC Mexico

•	Developed first of their kind healthcare quality indicators and interactive dashboards based on internal insurance claims data and external data to evaluate the nationwide quality of medical procedures in hospitals across Mexico and improve industry transparency.
•	Analyzed invoice-specific datasets and participated in the development of interactive dashboards for an electronic invoice solutions provider to improve the value of the client service offerings.
•	Created a market sizing dashboard based on open datasets ranging from population, industry and economy growth rates, house depreciation, the industry participant market share, among others, to identify market potentials for a real estate company.

Senior Consultant, Data & Analytics

▪ Conducted trend identification and market analysis of open socio-economic and industry-specific datasets to support internal PwC practitioners in their engagements.
▪ Updated and audited knowledge repository content to make sure shared information is adherent to the internal guidelines.

Senior Consultant, Knowledge Cente

▪ Undertook internally commissioned desk research, including a literature review of existing research and analysis of publicly available datasets; 
▪ Performed market trend analysis and its interpretation; 
▪oversaw and contributed to PwC's territory knowledge management activities.

Analyst, Knowledge Center

Webware.io

▪ Assisted in development and execution of online marketing strategies; 
▪ Responsible for generating weekly campaign performance reports and ensuring their timely delivery to clients.

Internship, Digital Analyst

Atma - An Accelerator for Education

▪ Managed online marketing campaign operations and analytics, including paid search campaign design, implementation, tracking, reporting, analysis, and optimization.

Volunteershp, Digital Analyst

Hey there, I'm Eka — a 'data person' on a mission to empower small to medium-sized businesses in Sub-Saharan Africa that focus on essential products and services. For the last six years, I've been living on the go, specializing in kickstarting projects from the ground up, particularly greenfield initiatives.


Think of me as your data travel companion, advocating for the 'essential data backpack' philosophy. It's about carrying what truly matters for your business — no unnecessary baggage.


My focus goes beyond just data; it's about enabling collaboration with interdependent data practices, providing hands-on training, and offering support even after implementation.


If you're a startup beginning your data journey, let's connect to get started on your project! I'm here to help you navigate the data landscape, turning challenges into opportunities for sustainable growth.

taplio

The Battle

Andreas Kretz

Eka Ponkratova

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