Apply on company website Brazil - Remote; Remote - Canada; Remote - India; Remote - Poland; Remote - UK Remote (Global) Full-time USD 393,800 – 574,300 / year

Oscilar is hiring a Sr./Staff JavaScript Developer - Web SDK (Brazil/Canada/UK/Poland/India)

Responsibilities

  • Lead the development and maintenance of a high-performance Web SDK for collecting and analyzing browser and device-related data.
  • Design and implement algorithms to create unique device fingerprints and capture behavior-based insights (e.g., gestures, keyboard, and mouse interactions).
  • Build and maintain a robust CI/CD pipeline with automated cross-browser testing and release cycles.
  • Continuously optimize SDK performance to minimize resource usage and ensure a seamless user experience.
  • Stay updated on emerging web technologies, security practices, and industry trends to enhance SDK capabilities.
  • Develop clean, maintainable, and well-documented code aligned with the best coding practices.
  • Conduct thorough code reviews and mentor junior engineers on best practices.
  • Collaborate with cross-functional teams—including product managers, designers, and QA engineers—to meet high-quality standards and customer requirements.
  • Ensure data privacy and security principles are embedded in the SDK’s design and implementation.
  • Drive innovation in browser-based solutions for risk, fraud detection, and device analytics.

Requirements

  • Proficiency in JavaScript (ES6+), TypeScript, REST APIs, Git, and version control tools.
  • Extensive experience designing and maintaining Web SDKs or libraries with a focus on data collection, tracking, or analytics.
  • Deep understanding of browser environments, APIs, and efficient handling of browser-related data.
  • Strong knowledge of data privacy, encryption, hashing, and obfuscation techniques.
  • Experience in building solutions that work seamlessly across various browsers and devices.
  • Understanding of server-side technologies and RESTful APIs for data retrieval and storage.
  • Proficiency in modern build tools and frameworks like Webpack, Babel, or Rollup.
  • Excellent problem-solving abilities, with attention to detail and a focus on delivering high-quality solutions.
  • Strong communication and collaboration skills to work effectively in cross-functional teams.
  • Ability to mentor and provide constructive feedback to junior developers.
  • Bachelor’s degree in computer science, Software Engineering, or a related field (or equivalent experience).
  • 8+ years of experience in web development, with at least 3 years focused on building and maintaining SDKs.
  • Proven track record of contributing to open-source projects or showcasing relevant work on platforms like GitHub.

Nice to Have

  • Experience with AI-driven analytics, risk systems, or fraud prevention technologies.
  • Familiarity with JavaScript SDKs, gestures, and interaction data processing.
  • Prior experience in a high-scale, distributed environment.

Benefits

  • Competitive salary and equity packages, including a 401k
  • Remote-first culture — work from anywhere
  • 100% Employer covered comprehensive health, dental, and vision insurance with a top tier plan for you and your dependents (US)
  • Unlimited PTO policy
  • AI First company; both Co-Founders are engineers at heart; and over 50% of the company is Engineering and Product
  • Family-Friendly environment; Regular team events and offsites
  • Unparalleled learning and professional development opportunities
  • Making the internet safer by protecting online transactions

Work Arrangement

Remote (Worldwide) — Brazil, Canada, UK, Poland, India

Required Skills
JavaScriptWeb Development
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Job Details
Location Brazil - Remote; Remote - Canada; Remote - India; Remote - Poland; Remote - UK
Work mode Remote (Global)
Employment Full-time
Salary USD 393,800 – 574,300 / year
Department Engineering, Device and Behavior
Category Frontend
Posted 6 months ago
Application On company website
About company
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Oscilar builds the most advanced AI Risk Decisioning™ Platform. Banks, fintechs, and digitally native organizations rely on us to manage their fraud, credit, and compliance risk with the power of AI.
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