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Donko User

@donkouser

Software Engineer at EDITED, contributing to an AI crawler system that achieved a 70% valid fix rate across 1,000+ tickets.

Bulgaria
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At EDITED, I contributed to an AI-powered multi-agent crawler maintenance system using Jira, Claude Code agents, and automated QA. It investigated tickets, generated fixes, and validated them in staging, achieving a 70% valid fix rate across 1,000+ tickets.

As a Junior Software Engineer at EDITED, I developed and maintained Python/Scrapy crawlers and parsers for international e-commerce retailers. I also diagnosed 400+ production crawler failures and performed end-to-end manual QA across 300+ retailer websites.

As an independent Smart Contract Security Researcher with Code4rena, Sherlock, and Cyfrin CodeHawks, I took part in competitive audits of DeFi protocols. I reviewed Solidity code, submitted severity-rated findings, and wrote Foundry proof-of-concept tests.

I built and deployed Pulsify, an AI-powered fitness and nutrition platform, with FastAPI, React, PostgreSQL, and Docker. It connects meal planning, nutrition tracking, and workout management, and I shipped its Android app through Google Play closed testing to a production-track release.

Experience

Work history, roles, and key accomplishments

ED
Current

Software Engineer

EDITED

May 2026 - Present (5 months)

Contributed to an AI-powered multi-agent crawler maintenance system using Jira, Claude Code agents and automated QA, achieving a 70% valid fix rate across 1000+ tickets. Investigated complex anti-bot failures, including dynamic CAPTCHA token generation, enabling direct crawler requests and saving several hundred dollars per month per crawler.

ED

Junior Software Engineer

EDITED

Jul 2024 - Apr 2026 (1 year 9 months)

Developed and maintained production Python/Scrapy crawlers and parsers within a fleet of 1000+ crawlers for international e-commerce retailers. Diagnosed and resolved 400+ production crawler failures and performed end-to-end manual QA on 300+ retailer websites.

CC

Smart Contract Security Researcher

Code4rena · Sherlock · Cyfrin CodeHawks

Jan 2024 - Jun 2025 (1 year 5 months)

Participated in public competitive audits of DeFi protocols, manually reviewing Solidity codebases for vulnerabilities. Wrote Foundry proof-of-concept tests to reproduce issues and demonstrate their impact.

Education

Degrees, certifications, and relevant coursework

Technical University of Varna logoTV

Technical University of Varna

Bachelor's studies, Computer Systems and Technologies

Bachelor's studies in Computer Systems and Technologies at the Technical University of Varna.

HS

Hristo Botev High School

High School Diploma, Software and Hardware Sciences

High school education with a focus on software and hardware sciences.

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