Fabian Crabus - Short project: Converting monocular images

Q: Where is Fabian based?

Fabian is based in Kalkar, Germany and prefers 100% remote projects.

Q: What languages does Fabian speak?

Fabian speaks the following languages: German (Native), English (Advanced) .

Q: How many years of experience does Fabian have?

Fabian has at least 22 years of experience. During this time, Fabian has worked in at least 11 different roles and for 6 different companies . The average length of individual experience is 2 years and 10 months . Note that Fabian may not have shared all experience and actually has more experience.

Q: What is Fabian's latest experience?

Fabian's most recent position is Short project: Converting monocular images .

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

In recent years, Fabian has worked for Port Thessaloniki and Next Logistics Ventures GmbH (seabo.com) .

Q: Which industries is Fabian most experienced in?

Fabian is most experienced in industries like Transportation and Logistics , Information Technology (IT) , and Aerospace and Defense . Fabian also has some experience in Government and Public Administration and Manufacturing .

Q: Which business areas is Fabian most experienced in?

Fabian is most experienced in business areas like Information Technology (IT) , Product Development , and Research and Development (R&D) . Fabian also has some experience in Business Intelligence .

Q: Which industries has Fabian worked in recently?

Fabian has recently worked in industries like Transportation and Logistics , Information Technology (IT) , and Aerospace and Defense .

Q: Which business areas has Fabian worked in recently?

Fabian has recently worked in business areas like Information Technology (IT) , Product Development , and Research and Development (R&D) .

Recommended expert

Kalkar, Germany

Experience

Apr 2025 - Sep 2025

6 months

Short project: Converting monocular images

Converting monocular images into depth maps and point clouds as training data for Jetson and Zed stereo cameras
Developing a drone detection system based on audio and video using Python

Jan 2025 - Apr 2025

4 months

Short project: AI for analyzing police reports

Analyzing police reports using LLMs and named entity recognition
Comparing off-the-shelf open-source systems with fine-tuned models on an on-premise GPU cluster

Jun 2024 - Jul 2025

1 year 2 months

Thessaloniki, Greece

Head of Development

Port Thessaloniki

Evaluating, developing, and implementing IoT sensors for real-time measurements of geodata and environmental data
Using Tile38 for dynamic geofencing solutions and analysis via Apache Superset
Building a scalable microservices infrastructure with Java 17, Quarkus, REST APIs, and JPA
Integrating external systems, implementing MQTT protocols, and developing ETL/mapping processes for integration with terminal operating systems
Designing an AI architecture to predict container turnaround times based on utilization, container type, and weather using Python and PyTorch

Jun 2024 - Oct 2024

5 months

Short project: RAG-supported LLM

Developing a retrieval-augmented generation LLM with Ollama and Langchain4j for domain-specific queries

Mar 2023 - Oct 2023

8 months

Short project: Prototype analysis of ship sensor data

Analyzing ship sensor data (position, draft, speed) for early wear detection of ship propellers using RNN models
Predictive maintenance for marine propulsion systems

Nov 2021 - Dec 2021

2 months

Short project: AI models for audio data analysis

Developed AI models to analyze audio data using CNNs on FFT and STFT data
Investigated predictive maintenance for wear detection

Oct 2019 - Oct 2019

1 month

Short project: AI training

Conducted a training on AI usage in Industry 4.0

Nov 2016 - Jun 2024

7 years 8 months

Hamburg, Germany

Head of Development (AI / Big Data / Geospatial Data)

Next Logistics Ventures GmbH (seabo.com)

Developed scalable microservices with Quarkus, Javalin, Spring Boot and JBoss 7.4
Optimized relational and NoSQL databases (PostgreSQL, MongoDB, DuckDB, Druid) with JPA/Hibernate/Panache
Integrated external APIs and ETL processes via REST, GraphQL, AWS Lambda, Spark and Flink
Built a robust Kafka infrastructure and used AWS services (S3, Kinesis, SNS, SQS, SageMaker, Lambda)
Performed profiling, debugging and optimization to improve software efficiency
Developed and trained AI models for text processing (Bi-LSTM, LLM), anomaly detection (Autoencoder), computer vision (YOLO, CNN, UNet), time series analysis (LSTM) and OCR tools (NER, LLM)
Processed and analyzed large datasets (>50 GB/day) with Spark, Flink and Druid
Developed and optimized ETL pipelines (NMEA AIS → Kafka → Flink → Parquet → Tile38 → AI model)
Built geofencing toolchain, clustering analyses, data cleanup and downsampling methods as well as models for distance calculation and route optimization
Visualized geospatial data with QGIS, Kepler, ArcGIS, deck.gl, Python and Spark

Jun 2016 - Jul 2017

1 year 2 months

Product development

Meerkat.ai GmbH

Developed a social media publishing platform to handle customer inquiries and complaints
Assessed urgency using deep learning (RNN/LSTM)
Developed a character-level GenAI chatbot
Designed and implemented the entire software architecture

Feb 2009 - Jun 2016

7 years 5 months

Head of Development

Viaboxx GmbH

Built and led a 12-person development team in the parcel automation domain
Conducted research projects on route optimization and cargo space monitoring
Implemented international enterprise integrations in Dubai, Denmark and Norway (Camel, ServiceMix, SOAP, SAP JCO)
Developed a work psychology-based assessment solution
Designed and implemented the software architecture

Jun 2006 - Feb 2009

2 years 9 months

Development Lead

agimatec GmbH

Built and led a 6-person development team in the parcel automation domain with an international focus
Used Java 6, J2EE, Elasticsearch, JBoss 5, JMS, EJB3, JPA, Hibernate, ActiveMQ
Implemented ESB solutions (ServiceMix) and reporting (JasperReports)
Used Scrum for agile development

Jun 2003 - Mar 2006

2 years 10 months

Technical Lead

DHL

Developed a platform for controlling parcel lockers
Created and documented the architecture and implemented it using Java 4, J2EE, EJB 2, Spring, JMS, and SonicMQ
Used rule engines (Drools), Oracle, and messaging solutions
Conducted testing and documentation using the V-Model XT

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 Transportation (21.5 years), Information Technology (11.5 years), Aerospace and Defense (0.5 years), and Government and Administration (0.5 years).

Transportation

Information Technology

Aerospace and Defense

Government and Administration

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 Information Technology (22 years), Product Development (15 years), Research and Development (8.5 years), and Business Intelligence (0.5 years).

Information Technology

Product Development

Research and Development

Business Intelligence

Summary

Senior AI & Big Data architect with 15+ years of experience developing scalable systems for logistics, IoT, and geodata. Specialized in Java, Python, and cloud architectures. Successfully implemented AI/ML solutions with proven business impact (process optimization, predictive analytics, microservices).

Skills

Ai/ml: Predictive Analytics, Computer Vision, Nlp, Llms, Rag, Vector Dbs, Digital Twins
Big Data: Apache Spark, Flink, Kafka, Etl, Data Lakes, Superset
Software Architecture: Microservices, Rest, Graphql, Api Design
Cloud: Aws, Azure
Geodata: Tile38, Gis Analysis, Qgis
Iot: Sensor Integration, Mqtt, Edge Computing, Secure Communication
Programming Languages: Java (17/21), Python, Javascript (React), Groovy
Tools: Docker, Kubernetes, Git, Jira, Confluence

Languages

German

Native

English

Advanced

Certifications & licenses

Scrum Master

BEA Weblogic Developer

Profile

Created

March 2025

Last Update

October 2025

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Frequently asked questions

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

Where is Fabian based?

Fabian is based in Kalkar, Germany and prefers 100% remote projects.

What languages does Fabian speak?

Fabian speaks the following languages: German (Native), English (Advanced).

How many years of experience does Fabian have?

Fabian has at least 22 years of experience. During this time, Fabian has worked in at least 11 different roles and for 6 different companies. The average length of individual experience is 2 years and 10 months. Note that Fabian may not have shared all experience and actually has more experience.

What roles would Fabian be best suited for?

Based on recent experience, Fabian would be well-suited for roles such as: Short project: Converting monocular images, Short project: AI for analyzing police reports, Head of Development.

What is Fabian's latest experience?

Fabian's most recent position is Short project: Converting monocular images.

What companies has Fabian worked for in recent years?

In recent years, Fabian has worked for Port Thessaloniki and Next Logistics Ventures GmbH (seabo.com).

Which industries is Fabian most experienced in?

Fabian is most experienced in industries like Transportation and Logistics, Information Technology (IT), and Aerospace and Defense. Fabian also has some experience in Government and Public Administration and Manufacturing.

Which business areas is Fabian most experienced in?

Fabian is most experienced in business areas like Information Technology (IT), Product Development, and Research and Development (R&D). Fabian also has some experience in Business Intelligence.

Which industries has Fabian worked in recently?

Fabian has recently worked in industries like Transportation and Logistics, Information Technology (IT), and Aerospace and Defense.

Which business areas has Fabian worked in recently?

Fabian has recently worked in business areas like Information Technology (IT), Product Development, and Research and Development (R&D).

Does Fabian have any certificates?

Fabian has 2 certificates. These include: Scrum Master and BEA Weblogic Developer.

What is the availability of Fabian?

Fabian is immediately available full-time for suitable projects.

What is the rate of Fabian?

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