Senior Software Engineer (Node), JavaScript SDK (Toronto)
About this role
We’re looking for a seasoned JavaScript expert to join our growing JavaScript SDK team. You’ll innovate on cutting‑edge SDKs for Node.js, Bun, Deno, Cloudflare Workers, and other modern server runtimes. This is not a typical senior software engineer position – you’ll own end‑to‑end development, push the boundaries of developer tooling, and influence the future of JavaScript standards.
Responsibilities
- Deeply own and evolve a wide suite of JavaScript SDKs, focusing on server‑side and edge runtimes such as Node.js, Bun, Deno, and Cloudflare Workers.
- Design, implement, and ship complete features, including robust unit and integration tests and crystal‑clear documentation for both our internal team and external customers.
- Leverage AI tools to supercharge productivity and focus on complex problem solving and value delivery.
- Represent Sentry in open‑source communities and committees such as TC39, the Node.js core team, and the OpenTelemetry SIG, helping shape JavaScript standards and runtime interoperability.
- Collaborate directly with Customer Operations to resolve critical bugs and engage with the product’s vibrant user base on GitHub and at industry conferences.
Qualifications
- 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 their module systems, APIs, performance characteristics, and deployment models.
- Exceptional written and verbal communication skills in English.
- Based in the Toronto, Canada area or willing to relocate to this thriving tech hub.
- Bonus: experience with WinterCG, the Web‑interoperable Runtimes Community Group, or other runtime interoperability initiatives; familiarity with OpenTelemetry instrumentation in server‑side or edge environments; history of contributing to or maintaining open‑source libraries; engagement with open‑source committees or working groups.
Base salary: CAD $200,000 to $295,000, plus equity grants, incentive compensation, paid time off, and group health insurance coverage. Eligible for Sentry’s employee benefit plans.
Equal Opportunity at Sentry: Sentry is committed to providing equal employment opportunities to its employees and candidates for employment regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, veteran status, or other legally‑protected characteristic. This commitment includes the provision of reasonable accommodations to employees and candidates for employment with physical or mental disabilities who require such accommodations in order to perform the essential functions of their jobs or to seek employment with Sentry. We strive to build a diverse team, with an inclusive culture where every teammate can thrive. Sentry is an open‑source company because we believe that everyone, everywhere, should have the ability and tools to make great software. Software should be accessible. That starts with making our industry accessible.
If you need assistance or an accommodation due to a disability, you may contact us at
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