Company Description
Experian is a global data and technology company that drives opportunities for people and businesses around the world. We operate in diverse markets, such as financial services, healthcare, automotive, agribusiness, insurance, among others. Experian invests in people and in new advanced technologies to unleash the power of data. We have an incredible team of 25,200 employees in 32 countries.
Our uniqueness is valuing yours. Experian's culture, centered on people, inclusive and purpose-driven, is recognized by various awards — including World's Best Workplaces™ 2025 (Fortune Global Top 25) and Great Place To Work™ in 26 countries, among others. Check out Experian Life on social media or explore our careers site to understand why. Experian is also proud to be an employer that promotes equal opportunity and affirmative action.
Job Description
Works on the development and evolution of the web components of the unified SDK, ensuring the secure capture, validation and transmission of data from different sources, such as images, documents and sensors, preserving its integrity throughout the entire journey to backend services.
Is responsible for implementing advanced mechanisms to protect against digital fraud, including detection of content injection, session tampering, malicious automation and execution in virtualized environments or untrusted browsers. Works directly on the client layer, considered one of the most critical surfaces for attack exposure.
Collaborates with Architecture, Information Security, Platform Engineering and Product teams to transform security, reliability and compliance requirements into scalable and production-ready solutions. Continuously works on optimizing performance, compatibility across browsers and devices, observability and telemetry, contributing to increase the levels of confidence and accuracy of risk and fraud decision engines.
Main Responsibilities
- Develop and maintain critical web components of the unified SDK using JavaScript and TypeScript.
- Design and implement mechanisms to protect against digital attacks, automation and manipulation of execution environments.
- Create solutions for detecting headless browsers, virtualized environments, emulators and digital fraud tools.
- Ensure secure communication between web components, native SDKs and backend services.
- Implement integrity and validation controls for data captured by the SDK.
- Develop telemetry, metrics, logs and observability mechanisms for continuous monitoring of the platform.
- Perform performance analyses and optimization of the capture experience across different browsers and devices.
- Participate in defining architecture, development standards and security strategies for client-side applications.
- Conduct code reviews and provide technical support to development teams in adopting good engineering practices.
- Investigate vulnerabilities and contribute to the continuous evolution of fraud and abuse prevention mechanisms.
Qualifications
- Completed higher education in Computer Science, Software Engineering, Information Systems or related fields.
- Solid experience in developing web applications using JavaScript and TypeScript.
- Advanced knowledge of the architecture and internal workings of modern browsers.
- Experience with modern front-end frameworks such as React, Angular or Vue.js.
- Knowledge of web application security, including OWASP Top 10, CSP, CORS, XSS, CSRF and secure authentication.
- Experience with WebAuthn, device fingerprinting and client-side protection mechanisms.
- Knowledge of detecting browser automation, virtualized environments, emulators and scraping tools.
- Experience integrating web applications with native mobile or desktop SDKs.
- Knowledge of REST APIs, secure communication protocols and applied cryptography.
- Experience with observability, monitoring and log analysis tools.
- Hands-on experience with agile development processes and DevSecOps practices.
Differentials
- Experience with digital identity, biometrics or fraud prevention products.
- Knowledge of WebAssembly (WASM).
- Experience with behavioral analytics and device intelligence.
- Knowledge of anti-tampering, anti-debugging and client code protection techniques.
- Experience in high-scale environments and applications with critical security requirements.
- Knowledge of document capture, proof of life or digital onboarding solutions.
- Hands-on experience with multiplatform SDK architecture.
Behavioral Competencies
- Strong analytical skills and ability to solve complex problems.
- Security-, quality- and reliability-oriented mindset.
- Excellent communication for interacting with multidisciplinary teams.
- Ability to influence technical and architectural decisions.
- Sense of ownership and autonomy in leading strategic initiatives.
- Ongoing interest in research and development in cybersecurity, anti-fraud and emerging web technologies.
Additional Information
Serasa Experian is much more than you imagine. With the purpose of creating a better future by expanding opportunities for people and businesses, in Brazil we are more than 4,000 people working in various teams and specialties. Here, every skill and diversity complements each other and you can work on what you love most. We are committed to building an inclusive culture and an environment where people can balance their careers with their commitments and personal interests, valuing well-being.
We are deeply committed to being one of the best and most innovative companies to work for in the country, enabling incredible experiences and careers for our people. Our strong people-first approach is recognized externally through various market certifications: we were awarded by Great Place To Work™ in 24 countries and by the international Top Employers certification, in addition to being recognized as one of the best companies for young professionals and having a 4.6 rating on Glassdoor. Each recognition tells us we are on the right path, providing an increasingly better work environment for our talent.
Experian Careers - Creating a better tomorrow together
Find out what it's like to work for Experian by clicking here