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Mikayel Dadayan

@mikayeldadayan

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Senior full-stack engineer at Webiz International who built an AI support chat and 3D boat tours.

Armenia

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At Webiz International, I built a Stripe-powered subscription and support payment system, along with an AI support chat grounded in boat-specific documents. I also automated document generation, saving 40+ hours per operation user per month.

I built a React and Three.js virtual tour that lets users explore boats in 3D and view attached products and diagrams. I also developed a product management dashboard to reduce manual setup time.

At Genesis Solutions, I worked on healthcare file distribution and a government portal, using Node.js, TypeScript, React, and AWS. Earlier, at Quinncia, I built student engagement visualizations and an AI-powered resume analysis workflow.

Experience

Work history, roles, and key accomplishments

Current

Senior Full Stack Software Engineer

Current

Webiz International

Nov 2023 - Present (2 years 11 months)

Implemented payment and subscription backend with Node.js, TypeScript, Express.js, and PostgreSQL on AWS, integrating Stripe for idempotent payment processing and dynamic billing. Built an AI-powered support chat and automated document generation, saving 40+ hours per operation user per month.

NodeJS TypeScript ExpressJS PostgreSQL AWS Stripe OpenAI React ThreeJS Vonage

Senior Frontend Developer

Quinncia

May 2023 - Oct 2023 (5 months)

Built heatmap and composite graph visualizations with React, Next.js, TypeScript, and Visx for student engagement data. Engineered an AI-powered PDF parsing and analysis workflow using GraphQL and REST APIs, and implemented security features like cross-tab idle detection and session renewal.

React Next.js TypeScript Visx GraphQL REST APIs Storybook AI PDF Parsing

Senior Full Stack Software Engineer

Genesis Solutions

Sep 2020 - Mar 2023 (2 years 6 months)

Architected a Node.js + TypeScript pipeline on AWS for a healthcare enterprise, supporting 100 concurrent uploads of up to 5GB each with 99.9%+ availability. Maintained frontend reliability for a government portal serving 100k+ DAU and achieved 80%+ test coverage using Jest.

NodeJS TypeScript AWS S3 Amazon SQS Lambda KMS MongoDB React GraphQL NestJS Jest

Full Stack Software Developer

ArtCoding

Jul 2019 - Aug 2020 (1 year 1 month)

Built full-stack applications with React, Node, Express, NestJS, and Hapi.js on MongoDB/MySQL, delivering auth, Stripe payments, file handling, OAuth integrations, and email workflows. Improved server response times through caching, bundle size reduction, and image optimization.