Senior Software Engineer (Node), JavaScript SDK

Senior Software Engineer · Senior · Full Time

San Francisco, CaliforniaUSD 190k – 280k3mo ago
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Role

What you'll do.

Sentry is seeking a Senior Software Engineer specializing in JavaScript SDK development, focusing on server-side and edge runtime environments. The ideal candidate will drive innovation in developer tooling, working across diverse JavaScript ecosystems like Node.js, Bun, Deno, and Cloudflare Workers while pushing the boundaries of performance monitoring and developer experience.

Responsibilities

  • JavaScript SDK Development: Design, implement, and maintain SDKs across multiple JavaScript runtimes including Node.js, Bun, Deno, and Cloudflare Workers
  • Performance Optimization: Enhance SDK performance and reliability across diverse runtime environments
  • Testing and Documentation: Create comprehensive unit and integration tests, and develop clear, educational documentation
  • Community Engagement: Collaborate with open-source communities like TC39, Node.js core team, and OpenTelemetry SIG
  • Customer Support: Directly assist Customer Operations team and engage with users on GitHub and at industry conferences

Qualifications

What we look for.

Technical

  • JavaScript Expertise

    Minimum 5 years of experience in web application, library, or SDK development

  • Runtime Diversity

    Deep understanding of Node.js and modern server runtimes

Education

  • Computer Science

    Bachelor's degree or equivalent practical experience in software engineering

Experience

  • SDK Development

    Proven track record of developing and maintaining JavaScript libraries or SDKs

  • Open Source

    Experience contributing to or maintaining open-source projects preferred

Skills

Required

  • JavaScript

    Deep expertise in JavaScript development

  • TypeScript

    Proficiency in TypeScript for type-safe development

  • Node.js

    Extensive experience with Node.js ecosystem

  • SDK Development

    Experience in creating and maintaining software development kits

Preferred

  • Bun

    Nice to have

    Experience with modern JavaScript runtime

  • Deno

    Nice to have

    Familiarity with alternative JavaScript runtimes

  • Cloudflare Workers

    Nice to have

    Knowledge of edge computing environments

  • OpenTelemetry

    Nice to have

    Understanding of observability instrumentation

Tech stack

Languages

JavaScriptTypeScript

Frameworks

Node.jsBunDeno

Tools

GitHubAI Development Tools

Other

Cloudflare WorkersOpenTelemetry

Compensation

Pay and benefits.

Base·USD 190,000 – 280,000

Benefits

  • Hybrid Work Model

    Flexible work arrangement with in-office collaboration on Mondays, Tuesdays, and Thursdays

  • Competitive Compensation

    Salary range of $190,000 to $280,000 with potential equity grants

  • Professional Growth

    Opportunities to engage with open-source communities and cutting-edge technologies

  • Health Insurance

    Comprehensive group health insurance coverage

  • Inclusive Culture

    Commitment to diversity, equity, and inclusion in the workplace

Process

Interview steps.

  1. 01

    Initial Screening

    Review of resume and initial qualifications

  2. 02

    Technical Phone Screen

    Detailed discussion of technical background and JavaScript expertise

  3. 03

    Technical Interview

    In-depth technical assessment of SDK development skills and runtime knowledge

  4. 04

    Team Interview

    Meeting with potential team members to assess cultural fit and collaborative potential

  5. 05

    Final Interview

    Discussion with senior leadership about role expectations and candidate's vision

Full posting

Original listing.

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.

In this role you will

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

You'll love this role if you

  • Are a craftsperson who takes immense pride in building features that are not only functional but a delight to use

  • Are a developer at heart, driven to create exceptional tools for your peers

  • Thrive in a modern, fast-paced environment where rapid iteration and shipping code are celebrated

  • Are excited about contributing to a globally recognized open-source project full-time

  • Flourish in a collaborative setting, surrounded by thoughtful engineers who inspire each other to new heights

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 how they differ in module systems, APIs, performance characteristics, and deployment models

  • Exceptional written and verbal communication skills in English

  • You're based in San Francisco (Bay Area) or are excited about the prospect of relocating to this thriving tech hub

Bonus points for:

  • 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

If you're ready to make your mark on the developer world, work with cutting-edge technology, and be a part of a company that's as invested in your growth as you are, we encourage you to apply.

The base salary range (or hourly wage range, if applicable) that Sentry reasonably expects to pay for this position is $190,000 to $280,000. A successful candidate’s actual base salary (or hourly wage) amount will be determined by a variety of relevant factors including, without limitation, the candidate’s work location, education, work and other relevant experience, skills, and job-related knowledge. A successful candidate will be eligible to participate in Sentry’s employee benefit plans/programs applicable to the candidate’s position (including incentive compensation, equity grants, paid time off, and group health insurance coverage). See Sentry Benefits for more details about the Company’s benefit plans/programs.

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 (a) perform the essential functions of their jobs, or (b) 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 [email protected].

Want to learn more about how Sentry handles applicant data? Get the details in our Applicant Privacy Policy.

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