Senior Software Engineer (Node), JavaScript SDK

Sentry • Toronto, ON

7d • Hybrid

About The Position

About Sentry
Bad software is everywhere, and we’re tired of it. Sentry is on a mission to help developers write better software faster so we can get back to enjoying technology.
With more than $217 million in funding and 100,000+ organizations that believe we’re on to something, we're building performance and error monitoring tools that help companies like Disney, Microsoft, and Atlassian spend less time fixing bugs and more time building products.
Sentry embraces a hybrid work model across our global hubs, with Mondays, Tuesdays, and Thursdays set as in-office anchor days to encourage meaningful collaboration. If you like to selfishly build things that make your digital life better, come help us build the next generation of software monitoring tools.
About this role
Are you ready to redefine the future of JavaScript development? Are you a seasoned JavaScript expert who gets a thrill from tackling complex challenges across the entire JavaScript ecosystem? Do you believe that AI can be a powerful partner in crafting elegant, high-impact code? If you're ready to leave the mundane behind and join a team that's shaping the tools used by millions of developers globally, we've got an opportunity for you at Sentry.
This isn't your typical Senior Software Engineer position. As a key member of our growing JavaScript SDK team, you'll be at the forefront of innovation, working on everything from our cutting-edge SDKs for Node.js, Bun, Deno, Cloudflare Workers, and other modern server runtimes. You won't just be maintaining code; you'll be pushing the boundaries of what's possible in developer tooling across the rapidly evolving server-side JavaScript landscape.

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 Node.js and meaningful exposure to one or more modern server runtimes such as Bun, Deno, or Cloudflare Workers — with a solid understanding of how they differ in module systems, APIs, performance characteristics, and deployment models
• Exceptional written and verbal communication skills in English
• You're based in the Toronto, Canada area or are excited about the prospect of relocating to this thriving tech hub

Nice To Haves

• Experience working with WinterCG, the Web-interoperable Runtimes Community Group, or other runtime interoperability initiatives
• Familiarity with OpenTelemetry instrumentation in server-side or edge environments
• A history of contributing to or maintaining open-source libraries
• Experience engaging with open-source committees or working groups

Responsibilities

• Join our JavaScript SDK team and get ready to build the future. You'll be at the forefront, working on: A Universe of JavaScript Challenges: Dive deep into our extensive suite of JavaScript SDKs, with a sharp focus on server-side and edge runtimes — from the battle-tested Node.js ecosystem to cutting-edge alternatives like Bun and Deno, and distributed edge environments like Cloudflare Workers. Your work will directly empower millions of developers to build better, more reliable software, no matter which runtime powers their stack
• End-to-End Ownership: We believe in giving our engineers the autonomy to see their vision through. You'll have the freedom to plan, implement, and ship your code, from writing robust unit and integration tests to crafting crystal-clear documentation that educates both our team and our customers
• The AI-Powered Developer Experience: We're committed to leveraging the latest advancements to work smarter, not harder. You'll utilize AI tools to supercharge your productivity and focus on what truly matters: solving complex problems and delivering exceptional value
• A Voice in the Open-Source Community: We're passionate about open source — it's in our DNA. You'll have the chance to collaborate with influential organizations and committees such as TC39, the Node.js core team, and the OpenTelemetry SIG, representing Sentry and helping to steer the future of JavaScript standards and runtime interoperability
• Direct Impact and Connection: Say goodbye to layers of bureaucracy. You'll be on the front lines, assisting our Customer Operations team to squash critical bugs and interacting directly with our vibrant user base on GitHub and at industry conferences

Benefits

• incentive compensation
• equity grants
• paid time off
• group health insurance coverage

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed