Seweryn K.
Senior Windows and Cloud Administrator, Veeam Administrator
With over 15 years of extensive experience in the IT infrastructure domain, I am a Top Rated Plus Freelancer on Upwork, celebrated for delivering excellence across more than 100 projects globally. My expertise encompasses a broad spectrum of technologies, including cloud platforms such as Azure, GCP, and AWS, as well as mastery in Office 365 and Google Workspace, ensuring enhanced collaboration and operational efficiency. Throughout my career, I have excelled in roles such as CTO and Senior Infrastructure Engineer, showcasing a harmonious blend of strategic leadership and deep technical expertise. My portfolio includes sophisticated projects in Windows Server management, virtualization with VMware ESXi and Hyper-V, and implementing comprehensive backup solutions with Veeam Backup & Replication. I specialize in executing seamless migrations to cloud services, optimizing IT ecosystems for peak performance, and developing robust disaster recovery plans that guarantee business continuity. My commitment to operational excellence and compliance is evident in my successful leadership of SOC2 and HIPAA compliance initiatives. Armed with a Master’s degree in Computer Science and fluent English proficiency, I am prepared to confront and solve complex IT challenges, providing scalable, secure, and innovative solutions. I am dedicated to leveraging my extensive experience to contribute to the success of your next project, driving growth and technological advancement within your organization.
Earnings and projects
Last 6 months ÷ 6
Read daily since Nov 4, under 30 days
Billed in all: $392,733$393k
$2.7k in the last 6 months
Across 16 contracts
Across 148 contracts
Earnings, last 30 days
Tracked from Nov 4, 2026.
Skill rankings: Top 2% in VMware ESX Server
Ranked by MRR among everyone on Upwork with the skill.
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- #6Microsoft Hyper-V Server236 freelancers · 🇵🇱 #1Top 3%🇵🇱#1 of 2
- #9VMWare251 freelancers · 🇵🇱 #2Top 4%🇵🇱#2 of 3
- #10VMware Administration274 freelancers · 🇵🇱 #1Top 4%🇵🇱#1 of 3
- #15Amazon ECS543 freelancers · 🇵🇱 #2Top 3%🇵🇱#2 of 8
- #19Windows Server862 freelancers · 🇵🇱 #3Top 2%🇵🇱#3 of 5