About Mihail Gumennii | Contra Mihail Gumennii
Mihail Gumennii

Mihail Gumennii

Principal Full-Stack Engineer. React, Next.js, AI products.

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Austin, USA

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Austin, USA

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Meet Mihail

I build production web apps and AI products end to end as engineer, product owner, and designer. React, Next.js, and TypeScript, with AI features built on Claude, MCP, RAG, and custom agents. Six years at Carvana (2020-2026) as Principal Engineer and team lead on customer chat and SMS: 95% fewer reported bugs. Now building AviaSkill and ArmedStrong; shipped OO Well in 2026.

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Rate

$100 - $150/hr

Skills and tools
Frontend EngineerFullstack EngineerWeb DeveloperBackend EngineerSoftware EngineerUX EngineerReact Native DeveloperSoftware ArchitectUX DesignerShopify DeveloperMobile EngineerAI Agent DesignerAI Agent EngineerData VisualizerReactTypeScriptNext.jsNode.jsOpenAIGraphQLAnt DesignMaterial UIShopifyAstroContentfulHTML5JavaScriptSalesforceReact NativeExpoClaudePostgreSQL
Details

Austin, USA

Fluent in English, Romanian, and Russian