Михайло

Michael Katskiy
Full-Stack Developer · Remote (Europe / EET)
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Summary
Full-stack developer with 5+ years of commercial experience, working in TypeScript across React/Next.js front ends and
Node.js services on GCP and Firebase. Used to owning features end to end in small teams without dedicated technical
management: goal-level requirements through data modeling, architecture and technology selection to release, monitoring and
production support. Recent work has centered on AI-driven products, high-volume data layers and security compliance.

Experience
VisCap AI Mar. 2024 – Jul. 2026
Full-Stack Developer Remote
• Built and maintained the core web application of an AI-driven video advertising platform using TypeScript, Next.js,

React, Zustand, React Query, Formik and Ant Design.
• Designed and maintained Firestore data models, security rules and production data migrations for collections exceeding

500,000 documents, and built the Typesense search layer and indexers on top of them.
• Delivered a file-upload security pipeline for CASA SAQ / Google Drive extended-access compliance: ClamAV scanning

on Cloud Run with a quarantine bucket and Cloud Tasks asynchronous processing.
• Developed Node.js/Express APIs deployed as Cloud Run services and Cloud Functions, with Pub/Sub and Cloud Tasks

for asynchronous workloads, Dockerized services and GitHub Actions CI/CD.
• Integrated LLM-based text and image generation into product workflows, including structured input/output schemas and

prompt design for production-grade results.
• Covered features with unit and component tests (Jest, React Testing Library) and end-to-end scenarios (Cypress) as part

of the definition of done.
• Introduced a “QA Guide” practice, a per-feature description of user-visible changes to be verified, adopted team-wide as

part of the developer QA process after the dedicated QA role was removed.
• Optimized rendering performance of data-heavy features (complex forms, tables, drag-and-drop, real-time Firestore

listeners) by eliminating unnecessary re-renders.
• Served on production support rotation from the first month, diagnosing user-reported issues using LogRocket session

replays and GCP logging.
ITCraft Oct. 2020 – Dec. 2023
Front-End Developer Remote
• Delivered front-end development for multiple client projects in a staff-augmentation model, primarily admin panels and

analytics dashboards for online businesses covering client management, user-behavior analytics, purchases and checkout
flows.
• Built responsive, component-driven interfaces with React and TypeScript (2+ years), using Redux and Zustand for state

management and Material UI and Bootstrap for design systems.
• Maintained and extended legacy front ends written in JavaScript and jQuery, incrementally migrating parts of them to

React.
Technical Skills
Languages: TypeScript, JavaScript (ES6+), SQL, HTML5, CSS3/SCSS
Front End: React, Next.js, Zustand, React Query, Redux, Formik, Ant Design, Material UI, Bootstrap, Tailwind CSS
Back End: Node.js, Express, Zod, NestJS, REST APIs, Firebase Cloud Functions, serverless architecture
Cloud & Infrastructure: GCP (Cloud Run, Cloud Functions, Cloud Tasks, Pub/Sub, Secret Manager), Firebase
(Firestore, Auth, Storage), Docker, GitHub Actions
Data & Search: Firestore, Typesense, PostgreSQL
Testing: Jest, React Testing Library, Cypress
AI / LLM: LLM API integration, structured outputs, prompt design for text and image generation
AI-Assisted Development: Claude Code and agentic coding workflows, custom agent skills and MCP integrations,
AI-supported design, implementation, test writing and documentation
Tools: Git, Figma, Mermaid, LogRocket, Webflow, Electron
Education
National Technical University “Kharkiv Polytechnic Institute” 2017 – 2021
Bachelor’s Degree, Chemical Engineering Kharkiv, Ukraine
Languages
English — C1 (working proficiency, 4+ years in English-speaking teams) · Ukrainian — C2 (Proficient) · Russian — Native