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5.0 / 5.0
Seweryn Kazior

Seweryn Kazior

Chrome Extension Development Client · Supman

Verified Profile Explore Built Project: WhatsApp Data Collector →

Executive Testimonial

“Great piece of technology. Very responsive communication, fast delivery, and happy to fix any issues that came up. If you need a good Chrome extension, you should hire him.”
Shipped Architecture

WhatsApp Data Collector

A Chrome extension that gathers WhatsApp invite URLs from visited websites and parses numbers from WhatsApp groups into CSV files.

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Verified Contracts & Milestones Shipped

Milestone Delivery

Executed 2020-12-06 → 2020-12-30

Delivered

Standard Engineering Protocol

Every engagement is delivered with 100% IP ownership, mutual NDA, and zero junior delegation.

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Industry Recognitions

WALL OF PROOF

Top Rated Plus
Upwork Verified
100% Job Success
Perfect Score
Upwork
Best Chromium Browser Specialist
Upwork
Best Chrome Extension Developer
Fiverr
Highest Ranked Extension Developer
Best Binary Analysis &
Reverse Engineering Expert
80% Re-Hire Rate

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Real clients. Verifiable on Upwork and LinkedIn.

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Upwork Top Rated Plus GWorld Ecosystem GTX Browser BlockCerts Orbiti Browser Total Security Enterprise Browser Kahf Inc Kahf Inc AccuPin AccuPin Inc. LinkedIn Recommendations Upwork Top Rated Plus GWorld Ecosystem GTX Browser BlockCerts Orbiti Browser Total Security Enterprise Browser Kahf Inc Kahf Inc AccuPin AccuPin Inc. LinkedIn Recommendations

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