freiberufler Cloud, Data & Security Architect | Klarheit, Struktur und Verlässlichkeit in anspruchsvollen Technologieprojekten auf freelance.de

Cloud, Data & Security Architect | Klarheit, Struktur und Verlässlichkeit in anspruchsvollen Technologieprojekten

online
  • 50‐100€/Stunde
  • Slowakei
  • Europa
  • sk  |  en  |  de
  • 18.05.2026
  • Contract ready

Kurzvorstellung

Hands-on architect turning strategy into execution across cloud, data, security, networking and product delivery. Bringing clarity to complex projects by aligning architecture, priorities and delivery with realistic business outcomes.

Auszug Referenzen (2)

"S. hat als Key Architect für Azure und Netzwerksicherheitsthemen erfolgreich an einem anspruchsvollen Projekt mit uns zusammengearbeitet."
Azure architekt, Network architect
Kundenname anonymisiert
Tätigkeitszeitraum

5/2023 – 6/2024

Tätigkeitsbeschreibung

Role: Azure Architekt, Network architect

Project: central core cloud platform for a a leading global biotechnology company.

Responsibilities:
- hybrid cloud architecture - design and implementation
- technical leading for individual solution domains: networking, security, private connectivity
- infrastructure code development, automated deployments
- configuration, system integration, troubleshooting, testing, operation

Work topics: cloud platform core design, network architecture, global connectivity, VWAN, branch connectivity, ExpressRoute, VPN, Fortinet SD-WAN, routing, BGP, Palo Alto NGFW, Bastions, platform security, NSG, RBAC. Infrastrucure as code, Terraform, Azure DevOps.

Eingesetzte Qualifikationen

Architektur (allg.), Cloud Computing, Cyber Security, Firewalls, Infrastrukturarchitektur, Microsoft Azure, Netzwerkarchitektur, Software Architecture, Solution Architektur

"Sergei has helped us solving in the start our Azure Data Platform journey challenges. Thanks to his support and enthusiasm, we went ahead faster."
Azure Architect, Cloud Data Architect
Kundenname anonymisiert
Tätigkeitszeitraum

3/2021 – 1/2023

Tätigkeitsbeschreibung

Leitender Azure Architekt - Infrastruktur, Landezone, Datenplattform, Netzwerken, Konnektivität, Zugriffsverwaltung

- Azure cloud platform architecture
- Azure network architecture, hybrid cloud connectivity
- Azure identity and access management
- Azure Active Directory
- Azure Administration: infrastructure, networking, DevOps, IAM, RBAC
- Fixing issues in architecture, connectivity and security
- Azure infrastructure as code, templates, scripts
- IaC maintenance, review, fixing, further development
- Azure DevOps pipelines, automation
- VPN, firewalls, routing, DNS integration
- Data architecture, data lake, Azure Synapse, Azur Event Hubs, pipelines etc.
- technical leading of Azure platform architecture design, implementation and adoption by new corporate branches
- technical leading of migration to new Azure Landing Zone
- leading and education of new internal team members

Eingesetzte Qualifikationen

DevOps, Identitätsmanagement, Infrastrukturarchitektur, Microsoft Azure, Netzwerk-Sicherheit, Netzwerkadministration (allg.), Netzwerkarchitektur, Solution Architektur

Geschäftsdaten

 Gewerbetreibend
 Steuernummer bekannt
 Berufshaftpflichtversicherung aktiv

Qualifikationen

  • Cloud Architecture
  • Cyber Security11 J.
  • Microsoft Azure6 J.
  • Cloud networking
  • Data Engineer4 J.
  • Databricks1 J.
  • DevOps4 J.
  • Kundenberater
  • Netzwerkarchitektur12 J.
  • Product Owner

Projekt‐ & Berufserfahrung

Independent Consultant / Fractional Cloud Architect
multiple clients, Dresden, Prague, Bratislava
9/2024 – offen (1 Jahr, 9 Monate)
IT & Entwicklung
Tätigkeitszeitraum

9/2024 – offen

Tätigkeitsbeschreibung

Delivered advisory, consulting and part-time project work for multiple clients in Germany and central Europe.
Supported architecture, transformation, troubleshooting and stakeholder alignment across short-term engagements.

Eingesetzte Qualifikationen

Cloud (allg.), Cloud Computing, Amazon Web Services (AWS), Cloud-Services, Cyber Security, Data Engineer, Databricks, Microsoft Azure, Network Architect, Netzwerkarchitektur

Azure architekt, Network architect
isolutions AG, Bern
5/2023 – 6/2024 (1 Jahr, 2 Monate)
IT & Entwicklung
Tätigkeitszeitraum

5/2023 – 6/2024

Tätigkeitsbeschreibung

Role: Azure Architekt, Network architect

Project: central core cloud platform for a a leading global biotechnology company.

Responsibilities:
- hybrid cloud architecture - design and implementation
- technical leading for individual solution domains: networking, security, private connectivity
- infrastructure code development, automated deployments
- configuration, system integration, troubleshooting, testing, operation

Work topics: cloud platform core design, network architecture, global connectivity, VWAN, branch connectivity, ExpressRoute, VPN, Fortinet SD-WAN, routing, BGP, Palo Alto NGFW, Bastions, platform security, NSG, RBAC. Infrastrucure as code, Terraform, Azure DevOps.

Eingesetzte Qualifikationen

Architektur (allg.), Cloud Computing, Cyber Security, Firewalls, Infrastrukturarchitektur, Microsoft Azure, Netzwerkarchitektur, Software Architecture, Solution Architektur

Azure Architect, Cloud Data Architect
A1 Telekom Austria AG, Wien
3/2021 – 1/2023 (1 Jahr, 11 Monate)
Telekommunikation
Tätigkeitszeitraum

3/2021 – 1/2023

Tätigkeitsbeschreibung

Leitender Azure Architekt - Infrastruktur, Landezone, Datenplattform, Netzwerken, Konnektivität, Zugriffsverwaltung

- Azure cloud platform architecture
- Azure network architecture, hybrid cloud connectivity
- Azure identity and access management
- Azure Active Directory
- Azure Administration: infrastructure, networking, DevOps, IAM, RBAC
- Fixing issues in architecture, connectivity and security
- Azure infrastructure as code, templates, scripts
- IaC maintenance, review, fixing, further development
- Azure DevOps pipelines, automation
- VPN, firewalls, routing, DNS integration
- Data architecture, data lake, Azure Synapse, Azur Event Hubs, pipelines etc.
- technical leading of Azure platform architecture design, implementation and adoption by new corporate branches
- technical leading of migration to new Azure Landing Zone
- leading and education of new internal team members

Eingesetzte Qualifikationen

DevOps, Identitätsmanagement, Infrastrukturarchitektur, Microsoft Azure, Netzwerk-Sicherheit, Netzwerkadministration (allg.), Netzwerkarchitektur, Solution Architektur

AWS Cloud DataOps Lead
Raiffeisen Bank International AG, Wien
4/2020 – 8/2020 (5 Monate)
Banken
Tätigkeitszeitraum

4/2020 – 8/2020

Tätigkeitsbeschreibung

- Design and implementation of Data Ops processes
- Relationships with internal stakeholders
- Data analytics
- Data and system integration
- Encouraged open dialogue between multiple cross-functional teams

Eingesetzte Qualifikationen

Cloud (allg.), Agile Methodologie, Amazon Web Services (AWS), Big Data, Cloud-Services, Cloud Computing, Data Warehousing, Datenanalyse, Datenarchitekt, DevOps, Infrastrukturarchitektur, Software Architecture, Solution Architekt, Solution Architektur, System Architektur

Datenplattform-Architekt
Cards & Systems EDV-Dienstleistungs GmbH, Wien
5/2019 – 8/2019 (4 Monate)
Finanzdienstleister
Tätigkeitszeitraum

5/2019 – 8/2019

Tätigkeitsbeschreibung

Datenplattform-Architekt, Apache Kafka Architekt

Eingesetzte Qualifikationen

Software Architecture, Solution Architekt, Apache Kafka, Datenanalyse, Datenarchitekt, Datenarchitektur, DevOps, Mongodb, System Architektur

Big Data Architekt
Munich Re Group, Munich
12/2016 – 6/2018 (1 Jahr, 7 Monate)
Versicherungen
Tätigkeitszeitraum

12/2016 – 6/2018

Tätigkeitsbeschreibung

Big Data Architekt

- Global inter-region corporate self-service big data platform
- Platform architecture, implementation, administration
- Security, performance, capacity planning, resource management
- Infrastructure automation, DevOps

Private cloud, Microsoft Azure, data lake, BI, Hadoop, HDFS, Hive, Spark, Kafka, Solr, Ranger, Apache NiFi, Jupyter, R Studio, DataRobot, Chef, Bash, Python, Git, Artifactory, Confluence, Jira, DevOps, Scrum

Eingesetzte Qualifikationen

Network Architect, Software Architecture, System Architektur, Solution Architekt, Apache Hadoop, Apache Kafka, Apache Spark, Big Data, Cloud Computing, Cyber Security, Data Engineer, Data Warehousing, Daten-Governance, Datenanalyse, Datenarchitekt, Datenbankadministrator, Datenbankentwicklung, DevOps, Infrastrukturarchitektur, Microsoft Azure, Netzwerk-Sicherheit, Netzwerkarchitektur

Big Data Consultant (Festanstellung)
Teradata GmbH, Munich
5/2015 – 7/2016 (1 Jahr, 3 Monate)
IT & Entwicklung
Tätigkeitszeitraum

5/2015 – 7/2016

Tätigkeitsbeschreibung

Big data projects for large customers

Eingesetzte Qualifikationen

Cyber Security, Amazon Web Services (AWS), Apache Hadoop, Big Data, Cloud-Services, Cloud Computing, Data Analyst, Data Engineer, Data Warehousing, Teradata Sql

Senior Big Data Engineer (Festanstellung)
GameDuell GmbH, Berlin
11/2014 – 4/2015 (6 Monate)
Finanzdienstleister
Tätigkeitszeitraum

11/2014 – 4/2015

Tätigkeitsbeschreibung

- development and live operation of big data, DWH and BI for online real-money gaming platform
- data architecture, data engineering, data flows, data pipelines, data migration, data mining, data science
- Hadoop, HDFS, Hive, Kafka, Storm, MySQL
- design and implementation in Java, Bash, SQL

Eingesetzte Qualifikationen

Data Science, Apache Hadoop, Data Mining, Data Warehousing, Datenanalyse, Datenbankentwicklung, Datenarchitekt, Datenbankadministrator, Java Developer Hadoop & Spark, Java-Entwickler, Python, Datenarchitektur

Lead Engineer, Architect, Delivery manager, Technical Product Owner
Openet a.s., Dublin
4/2008 – 10/2013 (5 Jahre, 7 Monate)
Telekommunikation
Tätigkeitszeitraum

4/2008 – 10/2013

Tätigkeitsbeschreibung

- Architecture
- Technical leading
- Customer consulting
- Delivery management
- Implementation

Eingesetzte Qualifikationen

Continuous Delivery, Softwareentwickler, Software Architecture, Software Design, Agile Methodologie, Cyber Security, Netzwerkarchitektur, Projektmanagement (IT), Scrum, Telekommunikation / Netzwerke (allg.)

Zertifikate

Open Telekom Cloud Practitioner
Open Telekom Cloud
2025
Open Telekom Cloud Fundamentals
Open Telekom Cloud
2025
Open Telekom Cloud Essentials
Open Telekom Cloud
2025
Microsoft Certified: Azure Data Engineer Associate
Microsoft
2025
Microsoft Certified: Cybersecurity Architect Expert
Microsoft
2024
Microsoft Certified: Azure AI Fundamentals
Microsoft
2024
Microsoft Certified: Azure Solutions Architect Expert
2023
Microsoft Certified: Azure Network Engineer Associate
2023
Microsoft Certified: Azure Support Engineer for Connectivity Specialty
2023
Microsoft Certified: Azure Security Engineer Associate
Microsoft
2023
Microsoft Certified: Azure Data Fundamentals
Microsoft
2023
Microsoft Certified: Security, Compliance, and Identity Fundamentals
2023
Microsoft Certified: Identity and Access Administrator Associate
2023
Microsoft Certified: Azure Administrator Associate
2022
Microsoft Certified: Azure Fundamentals
2022
DataOps Methodology
IBM
2020
AWS Certified Solutions Architect - Associate
2019
MapR Certified Cluster Administrator
2019
Certified Hadoop Administrator
Hortonworks
2017
Certified ScrumMaster
Scrum Alliance
2017
Certified Hadoop Developer
Hortonworks
2016

Über mich

* Technical focus *

Cloud platforms
• Cloud architecture and infrastructure: Azure, AWS
• Foundational knowledge of Google Cloud Platform (GCP), Oracle Cloud Infrastructure (OCI), Open Telekom Cloud (OTC)

Cloud security
• Identity & access management (IAM), Microsoft Entra ID, Role-Based Access Control (RBAC), Attribute-Based Access Control (ABAC), Privileged Identity Management (PIM)

Cloud connectivity & networking
• Virtual WAN, SD-WAN, ExpressRoute, VPN, IP address management (IPAM), network segmentation, routing, BGP, firewalls, bastions, security groups (NSG), DNS, public and private endpoints

Cloud governance
• Platform governance, cost optimization, security, compliance support, access management, monitoring, troubleshooting, log analytics

Cloud data architecture and data engineering
• Data lakes, DWH, BI, SQL & NoSQL databases, big data, cloud data platforms, ELT, data pipelines, streaming, Azure Synapse, Kafka, Spark, Hadoop

Implementation & automation
• Infrastructure as Code (IaC), DevOps practices, CI/CD, Git, Terraform, Terragrunt, Bash, PowerShell, Python, SQL, KQL

* Certifications *
• Azure Solutions Architect Expert (AZ-305) - 2023 - 2026
• Microsoft Cybersecurity Architect Expert (SC-100) – 2023 - 2026
• Azure Security Engineer Associate (AZ-500) – 2023 – 2026
• Azure Administrator Associate (AZ-104) – 2022 – 2026
• Microsoft Identity and Access Administrator Associate (SC-300) – 2023 – 2026
• Azure Network Engineer Associate (AZ-700) – 2023 – 2026
• Azure Support Engineer for Connectivity Specialty (AZ-720) – 2023 – 2025
• Azure Data Engineer Associate (DP-203) – 2025
• Azure AI Fundamentals (AI-900) – 2024
• Open Telekom Cloud Practitioner (2025)
• Open Telekom Cloud Fundamentals (2025)
• Open Telekom Cloud Essentials (2025)
• AWS Solutions Architect - Associate – 2019 – 2021
• Certified ScrumMaster - Scrum Alliance – 2017 – 2021
• IBM DataOps Methodology – 2020
• Certified MapR Cluster Administrator – 2019
• Certified Hadoop Administrator (Hortonworks) – 2017
• Certified Hadoop Developer (Hortonworks) – 2016

* Languages *
• English – Fluent
• German – Intermediate (B1/B2)
• Slovak – Native

* Professional insurance *
Professional indemnity insurance provided by Allianz, covering financial loss, legal defense costs, and damages arising from professional errors, up to 1 million EUR

Persönliche Daten

Sprache
  • Slowakisch (Muttersprache)
  • Englisch (Fließend)
  • Deutsch (Gut)
Reisebereitschaft
Europa
Arbeitserlaubnis
  • Europäische Union
  • Schweiz
Home-Office
bevorzugt
Profilaufrufe
5407
Berufserfahrung
32 Jahre und 4 Monate (seit 01/1994)
Projektleitung
10 Jahre

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