Konstantin Ryzhov

Senior Full-Stack Developer

Built the initial customer web application as the company's first engineering hire, including the PostgreSQL data model, tRPC API, ClickHouse integration, and React/Next.js UI. Led multi-tenancy rebuild, automated enterprise invoicing, and delivered customer analytics with 20+ ClickHouse query modules.

TypeScriptReactNodeJSNext.jsPostgreSQLRedisClickhousetRPCRESTOpenAPIPaddleWeb3Playwright

Software Engineer

Developed full-stack features for medical research platforms CureCloud and Immune Atlas, including complex survey and data-collection UI forms. Contributed to database design, built a medical cohort builder frontend, and introduced Playwright regression testing.

ReactPythonPlaywrightDatabase DesignFrontend Development

UI Developer

Developed marketing tools and a full-stack CMS using Node.js and MongoDB.

NodeJSMongoDBCMS Development

Frontend Developer

Developed client web applications using React and TypeScript, integrating Jumio, Braintree, and Highcharts.

ReactTypeScriptJumioBraintreeHighCharts

Software Engineer

EPAM Systems

Developed React/TypeScript analytics and mentored React courses.

ReactTypeScriptAnalyticsMentorship

Frontend Developer

Developed a web application for a Dutch startup using Backbone.js and Marionette.

Backbone.JsMarionette

Junior Frontend Developer

Created HTML5 templates and customer websites.

HTML5CSSWeb Development