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Frontend Engineer with ~3.5 years of experience building analytics platforms, Chrome extensions, and data-driven interfaces. Skilled in TypeScript, modern frontend frameworks, and REST API integration. Experienced in startup environments delivering production features end-to-end.…

Gennady Petrishchev

Front-End Developer, Web Developer, Full Stack Developer, +2

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Frontend Engineer with ~3.5 years of experience building analytics platforms, Chrome extensions, and data-driven interfaces. Skilled in TypeScript, modern frontend frameworks, and REST API integration. Experienced in startup environments delivering production features end-to-end.…

Available to hire

Frontend Engineer with ~3.5 years of experience building analytics platforms, Chrome extensions, and data-driven interfaces. Skilled in TypeScript, modern frontend frameworks, and REST API integration. Experienced in startup environments delivering production features end-to-end.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

Russian

Fluent

English

Advanced

Greek, Modern

Advanced

Work Experience

Frontend Developer at SIROC (ProfitTree Ltd)

March 1, 2025 - Present

Delivered the Product Finder feature over a 3-month milestone, building a search-driven research interface with filtering and analytics tables for products and shops. Developed a Chrome extension injecting analytics data directly into Etsy search pages. Developed Etsy Radar, an extension-powered dashboard surfacing real-time Etsy search activity. Built core user interfaces by translating product designs into reusable frontend components. Maintained and improved the frontend codebase with automated testing, monitoring, and error tracking.

Data Engineer Intern at SIROC

June 1, 2023 - March 1, 2025

Developed an Airflow-based workflow orchestration system deployed on Astronomer, automated company processes across research, finance, operations, and analytics. Designed and implemented DAG pipelines coordinating data ingestion, processing, and reporting across multiple internal and external systems. Built web scraping infrastructure to collect e-commerce marketplace data used for product research and business intelligence. Implemented automated testing and monitoring for data workflows, improving reliability of scheduled jobs and reducing operational errors.

Frontend Web3.0 Developer at 257 DeFi Technologies Europe

July 1, 2022 - December 1, 2022

Developed decentralized web applications. Implemented and deployed smart contracts on Ethereum test networks. Wrote unit and staging tests for backend smart contract functionality. Contributed to frontend integrations interacting with blockchain contracts.