Senior Software Engineer (Frameworks), JavaScript SDK

Functional Software, Inc.

Job Overview

Location

San Francisco, California

Job Type

Full-time

Full Job Description

📋 Description

• Design, develop, and maintain high-performance JavaScript SDKs that integrate with modern frameworks including React, Next.js, Vue, Nuxt, NestJS, and Hono, ensuring seamless error and performance monitoring for millions of developers.
• Own the end-to-end lifecycle of SDK features—from ideation and architecture to implementation, testing, and documentation—ensuring clarity and usability for both internal teams and external users.
• Leverage AI tools to enhance productivity and focus on solving complex problems in developer tooling, improving code quality and reducing manual overhead without compromising reliability.
• Contribute directly to open-source initiatives by collaborating with industry groups such as TC39 and the OpenTelemetry SIG, representing Sentry in shaping future JavaScript standards and best practices.
• Work closely with Customer Operations to triage, debug, and resolve critical issues reported by users on GitHub and other public channels, ensuring rapid response to high-impact production bugs.
• Engage with the global developer community through conferences and online platforms, gathering feedback and translating real-world usage patterns into product improvements.
• Maintain a deep understanding of rendering models, lifecycle events, and runtime behaviors across frontend and server-side JavaScript frameworks to ensure SDKs function correctly in diverse environments.
• Write and review robust unit and integration tests to guarantee SDK reliability across multiple framework versions and configurations.
• Produce clear, comprehensive documentation that empowers developers to adopt and effectively use Sentry’s JavaScript SDKs, reducing onboarding friction and support overhead.
• Advocate for developer-centric design principles, building tools that are not only functional but intuitive and delightful to use, prioritizing usability alongside technical excellence.
• Collaborate with cross-functional teams to align SDK capabilities with evolving industry trends, including edge computing, server components, and hybrid rendering patterns.
• Stay current with advancements in the JavaScript ecosystem, proactively identifying opportunities to enhance SDKs with new framework features, language updates, and emerging runtime environments.
• Participate in code reviews, architecture discussions, and team retrospectives to foster a culture of continuous improvement and technical excellence within the JavaScript SDK team.
• Represent Sentry as a thought leader in the developer tools space by contributing to public blog posts, talks, and open-source projects that elevate the broader JavaScript community.

🎯 Requirements

• At least 5 years of experience as a Software Engineer, web developer, or a similar role
• Deep expertise in developing web applications, libraries, or SDKs using TypeScript/JavaScript
• Hands-on experience with two or more modern JavaScript frameworks—such as React, Next.js, Vue, Nuxt, NestJS, or Hono—and a strong understanding of their rendering models, lifecycles, and runtime environments
• Exceptional written and verbal communication skills in English
• Based in San Francisco (Bay Area) or excited about relocating to this region

🏖️ Benefits

• Base salary range of $190,000 to $280,000
• Eligibility for incentive compensation and equity grants
• Participation in Sentry’s employee benefit plans, including paid time off and group health insurance coverage
• Opportunities to engage with open-source committees like TC39 and OpenTelemetry SIG
• Access to a globally recognized open-source project with direct impact on millions of developers
• Support for professional growth through conference attendance and community involvement

Skills & Technologies

JavaScript

TypeScript

React

Vue.js

Next.js

Senior

Hybrid

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Functional Software, Inc.

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About Functional Software, Inc.

Functional Software, Inc. operates the Sentry platform, providing real-time application performance and error monitoring for developers. It tracks crashes, performance bottlenecks, and releases across web, mobile, and server applications, offering stack traces, release health, and alerting to speed debugging. Supporting languages like JavaScript, Python, and Go, it integrates with GitHub, Slack, and major DevOps tools. The company distributes its service as both SaaS and self-hosted open-source software, helping engineering teams improve code quality and user experience.

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