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Senior Software Engineer (Web Scraping, Data acquisition, Data collection)

Job Overview

Senior Software Engineer (Web Scraping, Data acquisition, Data collection) role at NielsenIQ (Warsaw, Masovian Voivodeship, Poland).

Key points

  1. Design and build distributed scraping architectures that can scale across thousands of domains.

  2. Reverse engineer APIs and mobile apps using tools like Frida, mitmproxy, Charles Proxy, burp and many more.

  3. Detect common anti-bot measures (like JavaScript checks or browser behavior detection) to build crawlers that adjust to appear more human-.

  4. Lead technical innovation in scraping: identify edge cases, prototype new approaches, and share knowledge with the team.

  5. Deep understanding of anti-bot technologies and how to bypass them, fingerprinting, WAFs, JavaScript challenges, etc.

  6. Experience working with Scrapy, Requests, httpx, Selenium, Playwright, or custom headless browser drivers.

  7. Skilled at handling proxies (residential, datacenter, rotating), session management, cookie injection, and TLS tweaking.

  8. Strong debugging skills across browser, HTTP traffic, and device-level interactions.

Skills

JavaScriptPythonMongoDBAWSGoogle CloudKubernetesLinuxPrototyping

Experience: Senior-level · 5+ years · Job type: Full-time

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