About Us — A Business Shaped
by Real Hands-On Work

Kusma delivers fast, reliable computer repair and IT support in Miami. With 15+ years of hands-on experience, you work directly with an expert who fixes issues properly—not through guesswork or handoffs.

Meet the Founder — Sergei Kovalevskii

Sergei is a Miami-based technician with 15+ years of hands-on experience in computer repair, IT support, and infrastructure management. Starting with small home-network projects, he developed into roles supporting office environments, server systems, and mission-critical data center operations. Today, he brings this depth of experience to every home and business client he works with.

Over more than 15 years in the industry, Sergei has worked across several key technical roles, each expanding his expertise and shaping the disciplined approach he uses today:

Home network setups & early computer repair
System Administrator
Data Center Technician
Infrastructure Team Lead
Independent IT Specialist & Founder of Kusma

Professional Certifications

IBM – Core 1: Hardware and Network Troubleshooting
Skills: hardware diagnostics, service desk processes, system troubleshooting, IT hardware support.

IBM – Core 2: OS, Software, Security & Operational Procedures
Skills: technical support, computer hardware troubleshooting, hardware support, IT service operations.

Core Courses & Technical Training

Electrical Safety Certification for Administrative and Technical Staff
Training in safe work practices around electrical systems — essential for hardware, data-center, and onsite repair work.

IHCA Course: “Focus on the Subordinate”
Coursework centered on responsibility, structured communication, and leadership in technical environments.

Identity with Windows Server 2016 (Noventiq Belarus)
Skills in Windows Server, Active Directory, system administration, troubleshooting, and server operations.

Examples of complex technical projects
successfully delivered

City-scale network infrastructure built by a single engineer

Core network designed and deployed across nine residential buildings, ensuring stable connectivity for thousands of residents.

2,000+

apartments connected

buildings covered

Traffic increased 20× through architecture optimization

Bottlenecks removed and system architecture reworked to support rapid growth without outages.

×20

traffic growth

6–12months

scaling period

Order and reliability restored to a 1,000+ server environment

Racks standardized, cabling rebuilt, and entire server fleet documented for stable long-term operations.

1,000+

servers organized

3,000+

cables re-laid
and labeled

“Kusma was built to offer honest, high-quality technical help without the complexity of large service providers. Real work, real accountability, real results.”

Sergei Kovalevskii, Owner & Lead Technician

Why People Trust Kusma With Their Tech

Real, high-stakes problem-solving background

Years of work across home, office, and data center environments allow for precise diagnostics and dependable, real-world solutions—not assumptions.

Practical, field-tested expertise—not theory

Skills were developed through continuous hands-on work with real systems. This results in deeper understanding and faster resolution than scripted or purely theoretical approaches.

True accountability — no handoffs or outsourcing

Every project is handled directly by the specialist performing the work. No handoffs, no outsourcing, no gaps in communication—just consistent quality and responsibility.

System-level thinking that prevents repeat issues

Instead of treating symptoms, each issue is evaluated within the full context of the system, ensuring long-term stability rather than temporary fixes.

Clear, calm, transparent communication

Clients receive straightforward explanations and honest recommendations without jargon or pressure. The goal is clarity and confidence at every step.

What Clients Say

Don’t just take our word for it! See how other Miami companies rate our managed IT services, IT support, and projects after trusting us with their day-to-day systems and long-term IT plans.

thanks for your help ! Highly recommend and will definitely use again

toni vorsinsky

Best of the best 1000%

Iv Ra

Thank you very much to Sergey for his assistance and advice on what to do with my equipment. Thank you for your willingness to help

Elena Druzh

Nice

Andrei Yaromin

Thanks. Everything was great. I’ll be recommend.

Mister Boyko

> Need tech help today?|

When your devices and network just work, you move faster, deal with fewer interruptions, and worry less about data loss. Tell us what’s happening, we’ll diagnose quickly, handle the fix, and get you back to what matters.

> Contact Us

About Us — A Business Shaped by Real Hands-On Work