Company · 3 open roles
Careers at Castle
Castle has 3 active roles on ResuMinder right now, with 100% remote-friendly. Score your CV instantly and use the ResuMinder extension to apply in seconds — no manual form-filling.
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3 positions at Castle
Mobile Engineer
Castle·Europe
Mobile Engineer at Castle. Location: Europe. Role: designing architecture, building SDKs, maintaining performance Requirements: Experience building mobile SDKs in Kotlin/Swift with Gradle/CocoaPods; focus on performance, stability, and developer experience. Category: Software Dev…
Device Fingerprinting Engineer
Castle·Europe
Device Fingerprinting Engineer at Castle. Location: Europe. Role: designing signals, building collection, developing algorithms Requirements: Experience building or operating device fingerprinting systems at scale; hands-on browser signal collection; design of matching or cluster…
Detection Automation Engineer, Bot & Fraud Detection
Castle·Europe
Detection Automation Engineer, Bot & Fraud Detection at Castle. Location: Europe. Role: block traffic, tune thresholds, develop models Requirements: Experience with bot or fraud detection engines at scale; focus on maintainable systems, low latency, and clear reasoning. Category:…