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Игорь Черняев

@0008565

Senior Frontend Engineer at DevArmor who built an AI security platform’s frontend from scratch and engineered interactive threat-modeling diagrams.

Ukraine

Message

At DevArmor, I built the frontend for an AI-powered application security platform from scratch, taking ownership of its architecture and core functionality. I also engineered interactive threat-modeling diagrams and implemented application-wide optimistic updates with TanStack Query.

At Intellebox.ai, I rebuilt the web application with Next.js and independently built and shipped a React Native app to the Apple App Store. Earlier at ITCraft, I improved a Gatsby site's Lighthouse Performance score from approximately 45 to 85 and helped improve reliability in an enterprise Angular messaging system.

Experience

Work history, roles, and key accomplishments

Senior Frontend Engineer

DevArmor

Dec 2024 - Oct 2026 (1 year 10 months)

Built the frontend application from scratch, owning architecture and technical decisions. Engineered complex interactive diagrams for threat modeling and implemented optimistic updates with TanStack Query.

React TypeScript Vite Vitest Tanstack Query Zustand Ant Design Tailwind Tiptap GitHub Actions AWS Terraform

Lead Frontend & Mobile Engineer

Intellebox.ai

Feb 2024 - Sep 2026 (2 years 7 months)

Owned frontend and mobile development, rebuilding the web app with Next.js and shipping a React Native app to the App Store. Led technical planning and contributed to architectural consolidation.

React Next.js TypeScript React Native Capacitor Tanstack Query Zustand Shadcn Ui Tailwind Auth0 Xcode Cloud Firebase Supabase

Lead Frontend Engineer

ITCraft

Apr 2021 - Jan 2024 (2 years 9 months)

Progressed from Middle to Lead Frontend Engineer, owning architecture and delivery across projects. Mentored teams, launched an internship program, and improved performance of enterprise applications.

Angular Gatsby GraphQL React TypeScript Performance Optimization Mentorship

Middle Frontend Engineer

ITCraft

Feb 2020 - Apr 2021 (1 year 2 months)

Built and maintained frontend features for production applications using React, Angular, and TypeScript. Mentored junior developers and conducted technical demos for clients.

React Angular TypeScript Mentorship

Full Stack Engineer

Skilarium

Aug 2019 - Feb 2020 (6 months)

Developed a healthcare web application using React and TypeScript on the frontend and NestJS for backend APIs. Wrote unit and end-to-end tests to improve reliability.

React TypeScript NestJS Testing