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Staff JavaScript Developer (Web SDK) - Fraud Prevention & Risk Analytics

oscilar • Brazil
Full Remote
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Lead the design, development, and optimization of a high-performance Web SDK for fraud detection, device fingerprinting, and behavior analytics. Requires deep expertise in JavaScript/TypeScript, browser APIs, and cross-browser compatibility. Collaborate with cross-functional teams to build secure, scalable solutions for financial institutions.

Key Responsibilities
Lead development and optimization of a Web SDK for fraud detection, device fingerprinting, and behavior analytics
Design algorithms for device fingerprinting and behavior-based insights
Build and maintain CI/CD pipelines with automated cross-browser testing
Ensure data privacy, security, and compliance in SDK design and implementation
Collaborate with cross-functional teams to deliver high-quality solutions
Technical Skills Required
JavaScript (ES6+) TypeScript Web SDK Development
Benefits & Perks
Competitive salary and equity packages
Remote-first culture with work-from-anywhere flexibility
100% employer-covered comprehensive health, dental, and vision insurance
Unlimited PTO policy
Unparalleled learning and professional development opportunities
Nice to Have
Experience with AI-driven analytics or fraud prevention technologies
Familiarity with JavaScript SDKs and interaction data processing
Prior experience in high-scale, distributed environments

Job Description

We are seeking a highly skilled Staff JavaScript Developer to design, build, and optimize our Web SDK. This SDK will be at the core of our solutions for device fingerprinting, identity verification, and behavior analytics, enabling our customers to stay ahead in the ever-evolving fraud prevention landscape.

As a Staff Developer, you will lead the development and performance optimization of our Web SDK, leveraging your deep expertise in JavaScript, TypeScript, and modern web technologies. You will collaborate across teams to deliver a secure, scalable, and developer-friendly SDK.

Responsibilities

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