Viktor Babanov

Senior software engineer who is eager to share his experience. Core developer of the Yii Framework. Founder of

[Viktor Babanov @viktorprogger]

Finally LIVE! 🚀
Stop searching for candidates like you're using grep. HireFeel understands context, not just keywords.
Check it out: https://t.co/URJAMirI7r
Share with your friends and company HRs! 🛠️
#BuildInPublic #SaaS #AI #HireFeel #GoLang #HRTech

[Viktor Babanov @viktorprogger]

Wow, that's really a good explanation of mutation testing from zero to a deep dive 😍
Thanks, @roxblnfk! I'll refer this article once I need to explain mutation testing to someone.

[Aleksei Gagarin @roxblnfk]

Lately I've been working on integrating #Testo #PHP with @infection_php

There's still more ahead, but in the meantime you can read my fresh article about mutation testing

https://t.co/AVe5xCipGg

[Viktor Babanov @viktorprogger]

Wow, Testo looks really promising! Going to adapt it at work right after the current vacation 😎

[Aleksei Gagarin @roxblnfk]

Testo – a new #PHP testing framework is now in open beta.

Plugin architecture, middleware, typed assertion chains, inline tests right in src, benchmarks with one attribute, PHPStorm plugin.

https://t.co/Ei6APPyv2b

[Viktor Babanov @viktorprogger]

@xepozz 2. SOTA LLMs are pretty expensive for such usage. A single resume analysis should not cost a few bucks for my clients. That's why I'm using smaller models and maximizing their precision.

[Viktor Babanov @viktorprogger]

Stop treating LLMs like databases.
Treat them like a human intern who doesn't have a calculator or a clipboard.
Once I changed my mindset, HireFeel’s matching accuracy skyrocketed.
Here are 3 fixes I implemented this weekend.
(1/5)

[Viktor Babanov @viktorprogger]

@xepozz 1. Yeap, SOTA LLMs are good enough to answer such a question in a chat. But when building a SaaS, you have to be sure it won't make a mistake after a million attempts. At least HireFeel users should receive as stable service as I can provide.

[Viktor Babanov @viktorprogger]

@xepozz Even SOTA LLMs make mistakes when encountering phrases like "from October 2024 to December 2025". Smaller models used in SaaS applications make such mistakes more often. Since it's trivial to calculate "1 year 2 months" in the code, doing so significantly improves output quality.

[Viktor Babanov @viktorprogger]

Summary:
— Hard Logic / Math / IDs -> Go 🐹
— Context / Vibe / Matching -> LLM 🤖
Don't make the AI do the rigid math.
#BuildInPublic #AI #GoLang #Engineering #LLM (5/5)

[Viktor Babanov @viktorprogger]

Reduce "Cognitive Load".
"15 months" requires mental calculation to understand context.
"1 year and 3 months" has instant semantic meaning.
I now pre-format all data into natural language strings before prompting. Help the model understand.
(4/5)

[Viktor Babanov @viktorprogger]

Best UI feature? No cookie banner. 🚫🍪
I removed all cookies from https://t.co/URJAMirI7r before login. Switched to @swetrix for analytics.
No tracking = No GDPR popups = Faster load times.
Respecting user privacy is a feature, not a constraint.
#Privacy #SaaS #BuildInPublic

[Viktor Babanov @viktorprogger]

Feature creep killed my prompts.
What started as 2 clean queries became massive dumps of logic over time.
Just refactored everything into 10 granular steps.
Now every nuance is evaluated in isolation
Quality went up, latency went down. 🚀
#Engineering #AI #DevTips #BuildInPublic

[Viktor Babanov @viktorprogger]

The result: Not designer-perfect, but a huge upgrade. AI + dev = actually shipping visuals instead of placeholders.

How did we do? Let me know in the comments.

#BuildInPublic #SaaS #HireFeel #GoLang #AI #HRTech #Recruiting #recruitment

[Viktor Babanov @viktorprogger]

I’m a backend dev. My habitat is build logs and Go routines, not Figma. 🛠️

But HireFeel needs a "face." Paired up with Google Gemini to brainstorm and fix my "programmer art" for the project's og:image. (1/2) ⬇️

[Viktor Babanov @viktorprogger]

The hardest part of #BuildInPublic isn't the code—it's finding the time.
No fake stories about "technical struggles" today. Just a busy day of real life.
The backend is ready, but still waiting for its final deploy. Shipping when it's done. 🛠️
#SaaS #SoloFounder #GoLang #HireFeel

[Viktor Babanov @viktorprogger]

@Dmarketsniper Totally agree. I'm going to make a very good deal for the first customers. They will be the beta testers 😈

[Viktor Babanov @viktorprogger]

The "it works on my machine" stage is over. Fighting the final boss: Production Environment.
https://t.co/URJAMirI7r is parked and waiting. Refusing to rush the launch until the UI is as solid as the backend logic.
#BuildInPublic #SaaS #GoLang #WebDev

[Viktor Babanov @viktorprogger]

Backend: Solid.
AI Prompts: Polished.
OG Tags: ...Almost forgotten. 🤦‍♂️
Launching a SaaS without social previews is like throwing a party and forgetting the sign on the door. Fixing it now before the LinkedIn crowd arrives.
#BuildInPublic #HireFeel #SaaS #WebDev #GoLang

[Viktor Babanov @viktorprogger]

@mustafaergisi Thank you! I'll do my best 💪

[Viktor Babanov @viktorprogger]

90/10 rule is real.
​Spent months on core logic & AI prompts, but now I’m fighting with CSS and deployment. The "boring" stuff is what actually takes you to the finish line.
​But I refuse to ship a broken UI. Quality > Haste. 🛠️
#BuildInPublic #SaaS #GoLang #WebDev #HireFeel