Sergej Ostashchuk

is available. ✅

Freiberuflich, Cloud Architect | Network Architect | Data Architect, DIGITAL RAIN, s.r.o.
Bratislava, Slowakei

Fähigkeiten und Kenntnisse

Azure
Networking
Security
Infrastructure
DevOps
Data Architecture
Cloud Security
Cloud Architecture
Terraform
Firewall
Microsoft Azure Active Directory
Azure VWAN
ExpressRoute
Virtual Private Networking (VPN)
SD-WAN
Palo Alto NGFW
Infrastrucure as code
Cloud Computing
DWH
Data Lake
Scrum
Python
AWS
Architecture
Database
Data Management
Big Data
Kubernetes
Data Warehouse
Leadership
independent
Reliability
Pragmatic approach
Strategic mindset
Conflict Management
Customer orientation
willingness to travel
Intercultural competence
Flexibility
Problem Solving
Team work
Creativity
Motivation
International experience
AWS Cloud
Google Cloud
Oracle cloud
Open Telekom Cloud

Werdegang

Berufserfahrung von Sergej Ostashchuk

  • Bis heute 22 Jahre und 4 Monate, seit Jan. 2004

    Cloud Architect | Network Architect | Data Architect

    DIGITAL RAIN, s.r.o.

    Hands-on Cloud Architect, Network Architect, Data Architect with over 25 years of experience. • Cloud platforms: Azure, AWS, foundational knowledge of GCP, OCI and OTC • Cloud networking: VWAN, SD-WAN, BGP, DNS, VPN, NSG, routing, firewalls • Cloud landing zones • Cloud security • Identity and access management (IAM): Entra ID (Azure AD), RBAC • Data architecture: data lakes, DWH, BI, databases, big data • Data engineering, data analytics, core of data science and machine learning

  • 1 Jahr und 2 Monate, Mai 2023 - Juni 2024

    Azure architekt, Network architect

    isolutions AG, Bern

    Architect - Central core cloud platform for a a leading global biotechnology company: - hybrid cloud architecture - design and implementation - technical leading - infrastructure as code - configuration - system integration - troubleshooting - operation 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.

  • 1 Jahr und 7 Monate, Dez. 2016 - Juni 2018

    Big Data Consultant

    Munich Re (Group)

    Hands-on architect: big data and data science platform, DevOps, automation, security, identity and access management, configuration management, administration.

  • 1 Jahr und 3 Monate, Mai 2015 - Juli 2016

    Big Data Consultant

    Teradata

    Big data solution architecture, design and implementation. Hortonworks Data Platform Certified Developer.

  • 5 Jahre und 7 Monate, Apr. 2008 - Okt. 2013

    Architect, Lead Software Engineer

    Openet

    As Senior Software Engineer at beginning, later as Lead Software Engineer, I worked directly with several big telecom customers. I was responsible for requirement capturing, business analysis, solution design, system integration, implementation, all acceptances, going live, operation support. Main projects: Policy and Charging Control system for Orange Slovakia, Online Charging System for A1 Telekom Austria, Online Charging System for SiMobil Slovenia, Online Charging System for VipMobil Serbia

  • 4 Jahre und 2 Monate, Feb. 2004 - März 2008

    Engineer, Technical Project Manager

    Orange Slovakia

    VAS & OSS/BSS design, implementation, integration, going live, operation support. Technical project management. Often acted as a bridge joining different technology and business-oriented departments (marketing, engineering, IS, core services, operations, customer care). Main projects : OTA handset configuration, IP television, Triple play, SMS/MMS gateways, Intranet portal, Oracle DWH, Oracle DB applications.

Sprachen

  • Englisch

    C1 (Fließend)

  • Slowakisch bilingualen

    C2 (Verhandlungssicher / Muttersprachlich)

  • Deutsch

    B1-B2 (Gute Kenntnisse)

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