40%
Faster PR review
Built a dual-model AI pull-request review pipeline at Mabbly; adopted as the org-wide quality gate.
Sergii Cherbadzhy
Senior Software Engineer · Saint Johns, Florida, US
Ten years of TypeScript, Node.js, and AWS serverless — now building AI pipelines that cut real engineering hours.
01
Selected Results
15s
Down from 3–4 min
Rebuilt a core reporting flow at ProHabits with reworked pagination and native SQL.
30%
Lower AWS bill
Optimized SQS + Lambda pipelines processing thousands of records per run.
02
Experience
-
Sep 2024 — present
Mabbly
Senior Software Engineer, AI engineering
LLM pipelines, RAG, internal AI tooling and automation.
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Apr 2018 — Jan 2025
ProHabits
Lead Software Engineer & Technical Team Lead
Node.js/TypeScript backend, AWS serverless (Lambda, SQS, RDS), Microsoft Teams app.
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Aug 2016 — Mar 2018
Megasoft
Ruby on Rails & JavaScript Developer
Billing systems.
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Aug 2015 — Oct 2017
Freelance
Web Developer
03
Open Source
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aws-serverless↗
TypeScript Lambda auth service: MongoDB Atlas, GitHub Actions CI/CD.
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roommates-backend↗
NestJS + TypeORM/MySQL API with Jest test suite.
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eth-gas-telegram-bot↗
Lambda that posts Ethereum gas prices to Telegram.
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experiments↗
n8n workflow templates and AI-automation experiments.
04
Teaching
YouTube (EN)
Sergii Cherbadzhy | AI Automation — AI agents, RAG, automation tutorials.
YouTube (RU)
@serginyo90 — 3.6K+ subscribers, 140+ videos, a 23-lesson n8n course.
05
Contact
Open to senior backend and AI engineering roles.