Sr./Staff JavaScript Developer - Web SDK

New

JobgetherSecurity and Fraud

CanadaFull-TimeSenior

SalaryCompetitive compensation package with equity opportunities.

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Job Details

Experience: 8+ years of experience in web development, including at least 3 years focused on building and maintaining SDKs or similar libraries.
Required Skills: GitJavascriptTypeScriptCI/CDRESTful APIs

Bachelor’s degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience.
8+ years of experience in web development, including at least 3 years focused on building and maintaining SDKs or similar libraries.
Advanced proficiency in JavaScript ES6+, TypeScript, REST APIs, Git, and modern version-control practices.
Extensive experience designing and maintaining Web SDKs or libraries focused on data collection, tracking, analytics, or similar use cases.
Deep understanding of browser environments, browser APIs, and efficient collection and processing of browser-related data.
Strong knowledge of data privacy, encryption, hashing, obfuscation, and related security principles.
Experience developing solutions that maintain compatibility across multiple browsers and devices.
Familiarity with server-side technologies and RESTful APIs for data retrieval and storage.
Proficiency with modern build tools such as Webpack, Babel, or Rollup.
Strong problem-solving abilities, attention to detail, and commitment to high-quality engineering.
Excellent communication and collaboration skills, with the ability to work effectively across technical and cross-functional teams.
Demonstrated ability to mentor engineers and provide constructive technical feedback.

Lead the development, maintenance, and evolution of a high-performance Web SDK for collecting and analyzing browser and device data.
Design and implement algorithms for device fingerprinting and behavioral analysis, including gestures, keyboard activity, and mouse interactions.
Build and maintain robust CI/CD pipelines with automated cross-browser testing and reliable release processes.
Continuously optimize SDK performance, resource consumption, and reliability to deliver a seamless end-user experience.
Monitor emerging web technologies, browser capabilities, security practices, and industry trends to enhance SDK functionality.
Develop clean, maintainable, well-documented code aligned with strong engineering and coding standards.
Conduct thorough code reviews and mentor junior engineers through technical guidance and constructive feedback.
Collaborate with product managers, designers, QA engineers, and other stakeholders to deliver high-quality solutions aligned with customer requirements.
Embed data privacy and security principles throughout the SDK architecture and implementation.
Drive innovation in browser-based technologies supporting risk management, fraud detection, device intelligence, and behavioral analytics.

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