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My name is Maksim Zhirnov. I’m a Growth Marketing Expert & MarTech Engineer. I help tech companies scale through data-driven marketing strategies, powered by my engineering background. I love building marketing systems that drive growth and sharing insights on the intersection of technology and customer acquisition.
Implementing Continuous Integration: From Chaos to Code Harmony

Implementing Continuous Integration: From Chaos to Code Harmony

Ah, Continuous Integration. The practice that separates teams that deploy code with confidence from teams that deploy code while nervously clutching their keyboards. If you’ve ever experienced the joy of merging three weeks of conflicting changes on a Friday afternoon at 5 PM—well, buckle up, because CI is about to become your new best friend. The Problem We’re Solving Let me paint you a picture: It’s Thursday evening. Your team has been working on separate features for two weeks....

December 13, 2025 · 11 min · 2253 words · Maxim Zhirnov
The Surprising Benefits of Obsolete Hardware and Software: A Devil's Advocate Guide

The Surprising Benefits of Obsolete Hardware and Software: A Devil's Advocate Guide

The Heresy Nobody Wants to Hear Let me start with a confession: I love legacy systems. Not in a masochistic way, but in the way you might love a beat-up old car that somehow always starts and gets you where you need to go. In an industry obsessed with the shiny new toy, there’s something refreshingly honest about code written in 1997 that’s still processing transactions like a champ. Before you close this tab thinking I’ve lost my mind, hear me out....

December 13, 2025 · 7 min · 1483 words · Maxim Zhirnov
Building an Air Quality Forecasting System with IoT Sensors: From Concept to Production

Building an Air Quality Forecasting System with IoT Sensors: From Concept to Production

Why You Should Care About Air Quality (Besides Your Lungs) Let’s be honest—most of us don’t think about air quality unless we’re coughing our way through a particularly smoggy day. But here’s the thing: air quality data is everywhere, and it’s actionable. Governments need it for policy decisions, city planners need it for urban development, and increasingly, individuals need it to decide whether today is a “stay inside” day or a “go for a run” day....

December 12, 2025 · 15 min · 3092 words · Maxim Zhirnov
The Case Against Always Using Test-Driven Development

The Case Against Always Using Test-Driven Development

Look, I’m going to say something that might get me some disapproving looks at your next team standup: Test-Driven Development isn’t always the answer, and pretending it is might be costing you more than it’s saving. Before you close this tab and write an angry comment, hear me out. I’m not saying TDD is bad. I’m saying it’s a tool, and like any tool, there are situations where you’re better off reaching for something else....

December 12, 2025 · 12 min · 2354 words · Maxim Zhirnov
gRPC for High-Performance Microservices: From REST Frustration to RPC Enlightenment

gRPC for High-Performance Microservices: From REST Frustration to RPC Enlightenment

Remember when REST APIs felt like the coolest kids on the block? Yeah, well, the times they are a-changin’. If you’ve been drowning in REST API plumbing code while watching your microservices shuffle data around like they’re wading through molasses, it might be time to discover why gRPC has become the go-to solution for organizations that actually care about performance. Let me be straight with you: gRPC isn’t just another technology hype train....

December 11, 2025 · 10 min · 2099 words · Maxim Zhirnov