Sergej Ostashchuk
Freiberuflich, Azure architekt, Network architect, isolutions AG, Bern
Bratislava, Slowakei
Über mich
I am an experienced cloud architect, solution architect, network architect, security architect, technical product owner. I work fully hands on designing and implementing complex cloud solutions. I provide expert consulting from solution design through implementation till live operation, using an effective combination of technical expertise and practical experience. I prefer pragmatic approach and value delivery. Work topics: Public, private and hybrid cloud architectures, solution architecture Azure networking: Virtual WAN network topology, hub-and-spoke network topology Connectivity, SD-WAN, ExpressRoute, VPN, routing, BGP Azure security: policies, private access to resources, network security, firewall Azure identity and access management, users, service principals, managed identities, roles Azure DevOps, Terraform, Azure CLI, PowerShell Data analytics in public and private clouds Technical leading and mentorship Independent contractor since 2002
Werdegang
Berufserfahrung von Sergej Ostashchuk
Bis heute 1 Jahr und 1 Monat, seit Mai 2023
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.
Providing independent consultancy services in emerging technology spaces, including cloud platforms, big data analytics, DevOps, infrastructure management, IT security.
Hands-on architect: big data and data science platform, DevOps, automation, security, identity and access management, configuration management, administration.
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.
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Slowakisch bilingualen
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