Perplexity · 10 hours ago
Senior/Staff Web Platform Engineer | NYC, Seattle, SF
Seattle, WA
Full-time
Hybrid
Senior Level, Lead/Staff
$200K/yr - $300K/yr
6+ years expPerplexity AI is on a mission to create the world's best answer engine and AI-native browser. They are seeking experienced Software Engineers for their new Web Platform team to build and maintain systems for high-quality web applications and enhance developer productivity.
Artificial Intelligence (AI)ChatbotMachine LearningNatural Language ProcessingSearch Engine
Responsibilities
Optimize performance for critical web flows (search, answer rendering, browsing), with a focus on improving application response speed and perceived latency
Design and implement solutions for customizable user interfaces and experience components across Perplexity and Comet
Develop and improve frontend alerting and monitoring systems to ensure reliability and rapid incident response for web experiences
Build self-serve capabilities and primitives that allow feature teams to ship frontend components and flows quickly without deep platform expertise
Support developer productivity initiatives to improve the ergonomics of web development at Perplexity (tooling, CI/CD, local dev workflows, documentation)
Contribute to upgrading and maintaining core web technologies (e.g., React, TypeScript, build tooling) used across Perplexity’s web stack
Collaborate closely with product, design, search, infra, and mobile teams to deliver cohesive, performant web experiences end to end
Participate in planning and roadmap discussions to ensure appropriate scoping, sequencing, and engineering allocation for platform work
Qualification
Required
6+ years of practical experience as a software engineer with a strong focus on web technologies
Deep expertise in modern JavaScript frameworks, particularly React
Experience optimizing web application performance and working with metrics such as time-to-first-byte, time-to-interactive, and application response speed
A strong technical background in frontend and/or full-stack development, ideally on high-traffic consumer or prosumer products
Familiarity with frontend monitoring and alerting systems (e.g., Sentry, Datadog, Grafana, OpenTelemetry-based tooling)
A track record of successfully managing technical migrations or large refactors in production web environments
Experience supporting developer productivity and building tooling or abstractions that other engineers rely on daily
Excellent collaboration skills and the ability to work effectively across product, design, and multiple engineering teams
A history of delivering high-quality, scalable software in production environments
Preferred
Experience working with AI products or integrating AI models into web applications, particularly in search, chat, or browsing experiences
Background in design systems implementation and shared component libraries used across multiple product surfaces
Experience with multi-region deployment architectures and edge rendering for low-latency global web performance
Knowledge of accessibility standards (WCAG) and practical implementation in complex, interactive web UIs
Proficiency with TypeScript and strong typing systems, including building well-typed internal libraries and SDKs
Experience with frontend performance optimization techniques (profiling, code splitting, caching strategies, image optimization, RUM)
Background in building developer tools or infrastructure for web teams, such as scaffolding tools, CLIs, or shared CI/CD pipelines
Company
Perplexity
Perplexity is an AI-powered answer engine designed to provide accurate, real-time responses to user queries.
201-500 employees
H1B Sponsorship
Perplexity has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (12)
2024 (7)
2023 (2)
Funding
Current Stage
Late StageTotal Funding
$1.48BKey Investors
Cristiano RonaldoNuVenturesAccel
2025-12-05Undisclosed
2025-09-10Series Unknown· $200M
2025-08-15Secondary Market
Leadership Team
Aravind Srinivas
Cofounder, President, CEO
Denis Yarats
Co-Founder & CTO
Recent News
2026-01-12
Business Insider
2026-01-11
2026-01-11
Company data provided by crunchbase