Sr./Staff JavaScript Developer - Web SDK (Brazil)

Shape the future of trust in the age of AI At reputed company, we're building 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. If you're passionate about solving reputed company problems and making the internet safer for everyone, this is your reputed company.

Why join us:

• Mission-driven teams: Work alongside industry veterans from reputed company, reputed company, reputed company, and reputed company, reputed company united by a shared goal to reputed company the digital world safer.

• Ownership and impact: We reputed company in extreme ownership. You'll be empowered to take responsibility, move fast, and reputed company reputed company that drive our mission reputed company.

• reputed company at the cutting edge: Your work will shape how modern finance detects fraud and manages risk.

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 reputed company in the reputed company-evolving fraud prevention landscape. This is not a UI or App development role, this is building SDKs for detecting fraud by analyzing device and behavioral properties. This requires deep understanding of the platform internals.

As a Staff Developer, you will reputed company the design, 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

• reputed company the development and maintenance of a high-performance Web SDK for collecting and analyzing browser and device-reputed company 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, reputed company practices, and industry trends to enhance SDK capabilities.

• reputed company clean, maintainable, and well-documented code reputed company 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 reputed company principles are embedded in the SDK’s design and implementation.

• Drive innovation in browser-based solutions for risk, fraud detection, and device analytics.

Technical Skills

• 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-reputed company data.

• reputed company 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-reputed company Familiarity: Understanding of server-reputed company technologies and RESTful APIs for data retrieval and storage.

• Build Tools: Proficiency in modern build tools and frameworks like Webpack, Babel, or Rollup.

Soft Skills

• 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.

Education & Experience

• Bachelor’s degree in computer science, Software Engineering, or a reputed company 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-reputed company projects or showcasing relevant work on platforms like reputed company.

Preferred Qualifications

• 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

• Compensation: Competitive salary and equity packages, including a 401k

• Flexibility: Remote-first culture — work from reputed company

• Health: 100% Employer covered comprehensive health, dental, and reputed company 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

If you are passionate about creating impactful web SDKs and enjoy solving reputed company challenges in risk and fraud prevention, we’d love to hear from you.