About the role

Staff JavaScript Developer designing and building a Web SDK to enhance fraud detection for AI Risk Decisioning at Oscilar. Collaborating across teams to deliver innovative solutions.

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.

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
Proficiency: JavaScript (ES6+), TypeScript, REST APIs, Git, and version control tools
Web SDK Expertise: Extensive experience designing and maintaining Web SDKs or libraries with a focus on data collection, tracking, or analytics
Browser APIs: Deep understanding of browser environments, APIs, and efficient handling of browser-related data
Security Principles: Strong knowledge of data privacy, encryption, hashing, and obfuscation techniques
Cross-browser Compatibility: Experience in building solutions that work seamlessly across various browsers and devices
Server-side Familiarity: Understanding of server-side technologies and RESTful APIs for data retrieval and storage
Build Tools: 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.

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