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TUYỂN FREELANCER – WEB AUTOMATION & ANTI-BOT Tôi đang tìm freelancer có kinh nghiệm phát triển và phân tích Web Automation / Browser Automation / Anti-Bot / Anti-Fraud để hỗ trợ nâng cấp một tool automation hiện có. Yêu cầu kỹ thuật Có kinh nghiệm với Playwright / Puppeteer / Selenium / Chrome DevTools Protocol (CDP). Hiểu sâu về cơ chế browser automation và cách website nhận diện traffic tự động. Hiểu các tín hiệu anti-bot phổ biến: WebDriver / automation signals Browser fingerprint Canvas / WebGL User-Agent, Client Hints Cookies / localStorage / session IP / proxy reputation Request & navigation patterns Behavioral signals Có khả năng đọc và phân tích JavaScript phía client, Network request và DevTools. Biết xây dựng hệ thống profiling, logging và testing để xác định nguyên nhân automation bị đánh dấu. Có kinh nghiệm thiết kế automation ổn định, xử lý timeout, CAPTCHA/challenge ở mức hợp pháp và các lỗi session. Có tư duy về anti-fraud / bot detection và biết xây dựng test environment để đánh giá khả năng phát hiện bot.
Project ID: 40681118
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Active 3 days ago
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9 freelancers are bidding on average $155 USD for this job

Hi, I'm Denis, a full-stack developer with recent experience building and hardening browser automation systems against detection mechanisms. The project involves improving an existing automation tool to bypass or mimic real user behavior while avoiding common anti-bot signals. The main technical challenges will likely be around fingerprint consistency, request pattern normalization, and session management, especially when handling CAPTCHAs or challenges without breaking the workflow. I’d approach this by first profiling how the current tool triggers detection, then adjusting browser fingerprints, request headers, and navigation timing to reduce automation signals. If the site uses behavioral checks, I’d implement mouse movements, typing cadence, and tab visibility handling to mimic human interaction. For CAPTCHAs, I’d test with legitimate solving services or browser-based challenges that don’t violate terms. One risk is that anti-bot systems evolve quickly, so any solution may need iterative fine-tuning as the target site updates its detection logic. Another is that heavy automation can still be flagged if request patterns or IP blocks look suspicious, so we’ll need to integrate proxies and rotate user agents carefully. I can start working right away. Let's connect and discuss the details. Thanks, Denis.
$150 USD in 3 days
3.9
3.9

Hi, I will upgrade your current Selenium/Playwright automation tool to reliably bypass anti‑bot checks, adding profiling, logging and CAPTCHA handling. I can deliver a tested version in 3 days for $150. I can send a free proof‑of‑concept now—shall I start? Waiting for your response in chat! Best Regards.
$140 USD in 3 days
0.0
0.0

Quick note on your project: I've shipped multiple production jobs built on automation, so I can contribute from day one. WHAT I'LL DELIVER - A working solution built on automation, tested and documented - Clean data/output in the exact format you need (Excel, CSV, JSON, API — your call) - Source code you own forever + a short README so you can re-run it anytime HOW I WORK 1. I confirm scope & deliverables in writing before starting 2. You see a first working sample early — no waiting until the deadline 3. Iterative delivery; progress updates every 2-3 days Timeline: typically 8–20 hours of work, deliverable in 3-5 days. For your posted budget ($250), I can deliver the full scope — or tell me your must-haves and I'll scope to fit. - Can start within 24 hours - Happy to do a small paid test task first so you can evaluate risk-free Best regards
$140 USD in 7 days
0.0
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Hanoi, Vietnam
Member since Aug 31, 2026
₹12500-37500 INR
$10-30 USD
₹1500-12500 INR
€30-250 EUR
₹1500-12500 INR
$30-250 USD
€200-400 EUR
£20-250 GBP
₹12500-37500 INR
₹12500-37500 INR
$10-30 USD
₹1250-2500 INR / hour
₹1500-12500 INR
₹2500-3500 INR
₹1500-12500 INR