Senior JavaScript Developer – Web SDK

🕒 February 21

🌐 Brazil, Canada, +3 more countries – Remote

🇧🇷 Brazil – Remote 🇨🇦 Canada – Remote 🇬🇧 United Kingdom – Remote 🇵🇱 Poland – Remote 🇮🇳 India – Remote

⏰ Full Time

🟠 Senior

💻 Frontend Engineer / Web Developer

👻 Ghost score 54%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Oscilar

WebsiteLinkedInAll Job Openings

51 - 200 employees

Founded 2021

💼 Consulting

🏥 Healthcare

⚖️ Legal

Consulting • Healthcare • Legal

Oscilar is a risk management platform that focuses on fraud defense, credit underwriting, onboarding risk, and AML compliance for financial institutions. Through its advanced AI Risk Decisioning™, Oscilar enables organizations to make faster and more intelligent risk decisions, monitor customer journeys, and ensure regulatory compliance seamlessly. Oscilar's platform provides comprehensive analytics and proactive detection capabilities, tailored to meet the unique risk needs of banks, fintechs, and credit unions.

📋 Description

• 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

• 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 • 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

🏖️ 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