Fingerprint · 19 hours ago
Team Lead - JS Agent
United States
Full-time
Remote
Senior Level
$178K/yr - $205K/yr
5+ years expFingerprint empowers developers to stop online fraud at the source. The Team Lead - JS Agent role combines technical leadership and hands-on engineering, focusing on the evolution of the browser-side JavaScript agent and ensuring codebase performance and maintainability.
Cyber SecurityFraud DetectionSoftware
No H1B
Responsibilities
Act as the technical owner for our browser-side TypeScript/JavaScript platform, including our core agent, SDKs, and CDN integrations
Partner with product, security, and engineering stakeholders to help define the technical roadmap and translate goals into a clear, actionable backlog
Lead architectural design and make high-impact technical decisions, balancing performance, security, and long-term maintainability
Spend a significant portion of your time writing, reviewing, and shipping production code in performance-critical, adversarial browser environments
Engineer for stealth, resilience, and efficiency; minimizing footprint, resisting detection, and maintaining compatibility across browsers and devices
Stay ahead of browser changes, plugin behaviors, and evolving fingerprinting and anti-debugging techniques
Set quality standards through code reviews, testing strategy, and CI improvements, ensuring reliability at massive scale
Collaborate closely with backend, data science, and security teams to align signal collection, detection logic, and system constraints
Mentor senior and mid-level engineers through technical guidance, design reviews, and knowledge sharing (without formal people management responsibilities)
Contribute to and help steward a widely-used open-source project with 24K+ GitHub stars and 25B+ monthly usages
A desire to transition from an individual contributor to an engineering management role
Qualification
Required
5-7+ years of professional JavaScript and TypeScript experience, with deep expertise in browser environments
Strong technical leadership skills: you've guided architecture, influenced roadmaps, or acted as a go-to technical authority on complex systems
Deep understanding of browser internals, APIs, DOM behavior, timing attacks, and anti-debugging techniques
Experience building and maintaining production-grade libraries, SDKs, or platforms used by other developers
Comfort operating across abstraction levels: high-level system design one moment, low-level performance tuning the next
Strong frontend expertise (~70–80%), with enough backend familiarity (~20–30%) to reason about end-to-end systems
Proficiency with build and bundling tools such as Webpack, Rollup, or Esbuild, including minification and obfuscation strategies
Experience with modern testing frameworks (Jest, Jasmine, or similar) and CI pipelines
Solid grounding in security principles, privacy considerations, and adversarial engineering
Ability to work effectively in fast-moving environments where requirements evolve and tradeoffs must be made explicitly
Clear, thoughtful written and verbal communication skills in English
Preferred
Experience leading or significantly shaping technically complex browser products (e.g., Google Docs, Figma, Miro, browser-based games, media platforms, or security tooling)
Meaningful contributions to open-source projects, particularly in the JavaScript or TypeScript ecosystem
Experience with WebAssembly, browser extensions, or advanced debugging techniques
Familiarity with AWS services such as Lambda, CloudFront, and DynamoDB
Browser automation, scraping, or reverse-engineering experience
Company
Fingerprint
The highest accuracy device identity platform for high-scale applications
51-200 employees
Funding
Current Stage
Growth StageTotal Funding
$77MKey Investors
Craft VenturesNexus Venture Partners
2023-10-17Series C· $33M
2021-11-03Series B· $32M
2021-02-11Series A· $8M
Leadership Team
Dan Pinto
Co-Founder & CEO
Recent News
Business Wire
2025-12-09
Media Outreach
2025-11-27
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