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

View all posts »

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

Performance Viktar Patotski Viktar Patotski · 13 min read

Virtual Threads vs Platform Threads: A Spring Boot Benchmark on AWS

Do Java virtual threads make a Spring Boot app faster? I load-tested the same app both ways on real AWS hardware. The honest answer: below saturation they do nothing, on CPU-bound work they do nothing, and where they win on blocking I/O, a properly tuned platform pool matches the throughput. The real case for virtual threads is not raw speed, it is having no pool to tune and a cheaper thread.

Security Viktar Patotski Viktar Patotski · 11 min read

Auditing Your Cloud and Identity Setup with AI

Most breaches are not a code bug. They are a public bucket or an over-broad role nobody reviewed. Here is how to use AI for an expert first pass over your cloud, identity, and infrastructure config, and the tools and guardrails that keep it honest.

AI Viktar Patotski Viktar Patotski · 8 min read

What an LLM Feature Really Costs

The API price page says a few dollars per million tokens and looks cheap. That is not what your AI feature will cost. Here is the real formula, a worked example, the levers that cut the bill, and when self-hosting actually pays.

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.