18 hours ago
Remote, Poland or Kraków, PolandSenior
Responsibilities
- Reverse-engineer antibot and fingerprinting systems across JavaScript VMs, WebAssembly, and obfuscated or polymorphic code.
- Build JavaScript tracing, deobfuscation, fingerprint-inspection, and automated reverse-engineering workflows.
- Use LLMs, agents, and custom automation to deobfuscate, classify, and diagnose detection surfaces.
- Build checkpointed website-intelligence pipelines that compare antibot updates against known-good baselines.
- Provide context, signals, and structured intelligence to AI reverse-engineering and ban-resolution systems.
- Turn reverse-engineering discoveries into durable tools, rules, and pipelines for engineers and AI agents.
- Integrate tooling into the custom browser and automation stack and mentor teammates in AI-augmented reverse engineering.
Requirements
- Demonstrated use of LLMs, coding agents, and automation to accelerate engineering work.
- Strong proficiency in JavaScript, Node.js, and Python, with broad programming experience.
- Strong research, debugging, fuzzing, static analysis, dynamic analysis, concolic analysis, and reverse-engineering skills.
- Hands-on experience reversing JavaScript VMs, WebAssembly, and heavily obfuscated or polymorphic code.
- Deep understanding of operating systems and computer networking concepts.
- Experience with Wireshark, Burp Suite, or similar network-traffic interception and debugging tools.
- Understanding of browser engines, browser fingerprinting, and antibot or anti-scraping mechanisms.
- Bonus experience with IDA, Ghidra, Frida, Babel, C/C++, Rust, machine-learning or AI tooling pipelines, Mozilla, or Chromium contributions.
Benefits
- Full-time remote work from Kraków, Poland, with flexibility to work from where the employee does their best work.
- Inclusive, multicultural, self-motivated, and collaborative team environment.
- Conference attendance and opportunities to meet team members globally.
- Opportunity to work with cutting-edge open-source technologies and tools.
About Zyte
Zyte builds SaaS and services for extracting structured data from public websites, including Zyte API for crawling/unblocking/extraction, Smart Proxy Manager, and fully managed data projects for enterprise teams. Its business model combines subscriptions with professional services. Founded in 2010 and headquartered in Ballincollig, Cork, the privately held company is the original author and ongoing maintainer of the Scrapy web-scraping framework.