Aydin Kocas

Aydin Kocas

About Me

Data architect

I am a freelancer focusing on data

Starting with my education as an IT specialist, I have in total about 20 years of experience with consulting international key players in the IT, Telecommunications, Pharma/Life Science and Insurance industries.

  • Age39
  • ResidenceDuesseldorf/Germany
  • e-mailinfo@aydinkocas.de
  • Phone+49 151 1000 9876
  • FreelanceFreelance available


IT Security

During my time at Telekom Security I was the responsible project security manager for securing the business critical middleware platforms of the Deutsche Telekom connecting more than thousand interfaces across europe including B2B partners.

Additionally, being part of their honeypot team, I developed the new security dashboard, which is used in the Telekom Security SOC.


I have about 10 years knowledge in messaging, integration and API topics including web services, REST integration, EAI and service oriented architecture (SOA).

Expert knowledge in TLS and PKI topics.

Big data

Expert knowledge in Apache Spark & Apache Spark Structured Streaming, Apache Kafka and the ELK stack (elasticsearch, logstash, kibana) including data science aspects like applying machine learning algorithms for predictions.


Contact me for consulting or training lessons.




20 Years of Experience

Honors & Awards

May 2018

Top Performance Club

T-Systems International GmbH

T-Systems honored the new launch of the security dashboard.

March 2018

Security Innovation Award (team award)

Telekom Security

September 2017

Winner team CTF contest

Telekom Security

Experience (starting from 2006)

September 2019 - today

Senior Integration Architect


  • Focussing on IT Security, Enterprise Integration and Big Data.

April 2016 – September 2019

Senior Security Expert

T-Systems International GmbH

  • Project Security Manager for various DTAG integration platforms (e.g. SOA Middleware, API-Gateway, B2B Components)
  • Member of the DTAG honeypot team.
  • Lead development of the "Sicherheitstacho" based on React.js and WebGL.
  • Setup of a big data environment PoC with Elasticsearch, Apache Spark and Apache Kafka.

October 2008 – April 2016

ICT Business Analyst

T-Systems International GmbH

  • Provide technical consultancy, analysis and support services for a variety of business projects utilizing the central SOA infrastructure of Deutsche Telekom.
  • Design and development of specific integration components.
  • Maintenance of existing integration modules
  • Support of test, problem and incident activities

July 2008 – September 2008


Deutsche Post World Net

The projects FigaRo ROMO (Rollout Management Office) and FigaRo Support had the objective to replace all frontend systems in the offices of Deutsche Post with new hardware including peripherals. Specific activities:

  • Development of an intelligent XML comparison tool for tracking anomalies in software package profiles.
  • Dynamic statistics and graphical reports. Extension of installation routines.

September 2006 – March 2008

Billing Specialist - Technical Lead


  • Lead development for reporting tools.
  • Lead developer of an international invoicing portal (ETL).
  • Optimization and automation of organizational as well as technological processes.
  • Interface between the business side and international customers.

Focus and Key Competencies

Network and Data Security / Privacy

Enterprise Architecture

Big data analytics

Cloud technologies

Skills & Technologies (extract)

IT Security

Requirements, encryption, authentication, hardening, SIEM, pentesting

Big data

Apache Spark, Apache Kafka, Apache NiFi, ELK (elasticsearch/logstash/kibana)


Event streaming (Apache Kafka/Confluent Platform), Messaging (JMS, IBM MQ, Tibco), Datapower, REST, API, Microservices

Software development

Java, Python, R, node.js, React, bash, perl, R, WebGL, SQL, Elasticsearch


Docker, Kubernetes, AWS, Jenkins, Github, GitLab

Machine learning

Spark ML, Scikit-learn


Get in Touch

Get in Touch

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Duesseldorf, Germany
+49 151 1000 9876
Freelance Available

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