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Senior Software Engineer, Web Capture

United States, Atlanta 145000.00 - 170000.00 USD / Year · Job Posted March 18, 2026
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Job Description

As a Fullstack Web SDK Engineer on the Web Capture team, you’ll help build and evolve Fullstory’s core web SDK, enabling product teams to better understand user behavior and create exceptional digital experiences. You'll play a critical role in capturing high-fidelity, privacy-conscious session data that powers Fullstory’s session replay and analytics tools. Every day, you’ll dive into the internals of browser technology to build resilient, high-performance client-side code. You’ll collaborate with thoughtful engineers and cross-functional partners to deliver seamless web experiences, and contribute across our frontend React app, canvas-based Playback graphics view, and backend Go services. To thrive in this role, you’ll need a deep understanding of modern web technologies and browser behavior, and a passion for building fast, reliable tools that perform in real-world production environments.

Job Responsibility

  • Engineer performant, reliable features in our web SDK using TypeScript—ensuring the accurate capture of user sessions across browsers and frameworks
  • Contribute to our React-based Playback graphics app, using deep knowledge of browser behavior and canvas rendering to deliver high-fidelity session visualizations that customers trust
  • Collaborate with backend engineers to design and build Go-based services that support new capture and analysis capabilities, keeping performance and scalability top of mind
  • Troubleshoot cross-browser inconsistencies and edge cases, ensuring a stable and consistent experience for all users
  • Partner with stakeholders across Product, Design, and Support to scope work effectively, deliver on time, and contribute to a seamless customer experience
  • Participate in technical planning and code reviews, bringing your expertise in web performance, browser internals, and fullstack development to guide team success and technical quality

Requirements

  • Proven experience developing and maintaining production-grade JavaScript or TypeScript libraries or SDKs, ideally consumed by third-party applications or developers
  • Demonstrated ability to work with browser APIs, DOM behavior, and rendering engines to solve complex technical challenges across different environments
  • Hands-on experience building modern web applications with React, including knowledge of performance tuning and component design
  • Backend development experience in a production environment using Go or Node.js (or similar languages), especially in support of fullstack feature development
  • A track record of collaborating cross-functionally to scope projects, meet deadlines, and deliver solutions that directly impact product adoption and customer satisfaction

Nice to have

Leverage AI tools to enhance work quality and accelerate timelines by implementing AI solutions that optimize efficiency

What we offer

  • Flexibility and Connection
  • Flexible PTO policy
  • Annual company-wide closure
  • Federal holidays
  • Sponsored benefit packages for US-based Fullstorians
  • Supplemental coverage options for international Fullstorians
  • Professional development opportunities
  • Annual learning subsidy for US and EMEA-based employees
  • Monthly productivity stipend for US and EMEA-based Fullstorians
  • Team Collaboration through team off-sites and an annual full-company meet-up
  • Paid parental leave
  • Bereavement leave, including miscarriage/pregnancy loss

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