20+ years of making software systems do what they're supposed to do

Performance audits, architecture reviews, and hands-on technical leadership. From someone who opens your codebase, not a slide deck. Also available as Fractional CTO →

Viktar Patotski - Software Engineer & Architect

Results

Numbers from real engagements

20+
Years of experience
$1M+
Cloud costs cut
2 kHz
IoT data processed
15×
Release cadence

12 AWS mistakes
killing your budget

A free PDF checklist covering the most expensive mistakes I see in cloud setups, and how to fix each one in under a day.

Why me

Senior hands-on help, not slide decks. I open your codebase, find the real bottleneck, and ship fixes with your team - in weeks, not quarters.


20+ years across backend, cloud, and IoT. Shipped at scale from early-stage startups to global enterprises. Oracle Certified Professional: Java SE 11.


When your system is slow, expensive, or fragile - I'm the engineer your staff lead calls.

Backend

Java, Kotlin, Python

Cloud & Infra

AWS, Azure, DigitalOcean, Kubernetes, Terraform, bare-metal Linux

Data

PostgreSQL, MySQL, Redis, MongoDB, Kafka, RabbitMQ (also: MSSQL, DB2)

Practice

Performance, DDD, Event-driven, CI/CD

Industries

IoT · Autonomous Logistics · GovTech · Fintech · Healthcare · Telecom

Latest from the blog

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Practical guides on Java, Spring Boot, cloud architecture, and developer productivity.

AI Viktar Patotski Viktar Patotski · 13 min read

RAG Explained: What It Is and When You Actually Need It

RAG means handing your AI the right page from your own documents before it answers. It is powerful when your knowledge base is large, changing, or per-customer. It is also something a lot of teams build too early. Here is the honest decision.

Ready to fix what's slowing you down?

Book a free 30-minute call. We'll look at your biggest bottleneck and I'll tell you exactly what I'd do - no strings attached.