The Bottleneck Was Never Where We Expected It
What four real scalability testing engagements taught us about guessing, growth, and the fine print nobody reads.

Founder and CTO of Load Test Experts. Performance engineer with 12+ years of experience across Europe, Asia, and the Middle East.
Dmytro is the founder and CTO of Load Test Experts (LTE Team). He leads performance engineers, analysts, and database specialists who help product teams find bottlenecks, validate capacity, and ship systems that stay fast under real load.
His consulting work spans Europe, Asia, and the Middle East — from early-stage products to Fortune 1000 environments — with a practical focus on workload analysis, load and stress testing, monitoring, and capacity planning.
He regularly shares that practice beyond client work: speaking at conferences such as BAQ in Lviv, running hands-on load testing workshops, delivering performance training for engineering teams, and appearing as a guest on podcasts including How to Test This.
What four real scalability testing engagements taught us about guessing, growth, and the fine print nobody reads.
How we rebuilt loadtestexperts.com to score 100 across Performance, Accessibility, Best Practices, and SEO — on a small VPS, without a managed CDN.
Performance is more than tools and metrics — it's mindset and responsibility. Highlights from Dmytro Pozdnyakov's conversation on the How to Test This podcast.
ChatGPT's take on k6 over JMeter is solid — but incomplete. A practical view from 12+ years of performance engineering.
During workload analysis before a first release, we found the mail provider could only handle 25% of expected load — a hidden risk that could have broken onboarding.
How a cold call to Singapore turned into a long-term performance engineering partnership — and a friendship with Jeremy Tan.
Our speaker Dmitry Pozdnyakov presented on workload profiles in performance testing at the eighth BAQ conference in Lviv.
LoadtestExperts shared load testing expertise with young professionals at a community meetup in Kharkiv.
Why load testing matters before release, how to organize it properly, and what you need to get started.
Two days of performance testing education for the first TonicHealth team — test approach, automation tools, and results analysis.