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Klaviyo Logo

Senior Lead Software Engineer - SMS Channel

Klaviyo

$220,000 - $330,000
Aug 19, 2025
Boston, MA, US
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The company is looking to solve the problem of delivering effective mobile experiences to its over 150,000 ecommerce clients on a global scale.

Requirements

  • 10+ years of experience and have architected, built and delivered one or more complex systems
  • Proven experience building products that matter and pushing yourself and your team to be better engineers and build a product with passionate advocates
  • Experience in leading large scale initiatives across multiple teams spanning multiple months
  • Experience with messaging platforms and technologies
  • Exposure to large-scale system design
  • Experience with AWS or any similar cloud provider
  • Strong and opinionated experience with various technologies and know how to pick the right tool for any job

Responsibilities

  • Build and improve systems for high volume message delivery using multiple channels keeping in mind the overall user experience
  • Provide technical leadership to drive architectural decisions across multiple teams and provide solutions for complex problems around scalability, throughput, performance etc
  • Strive towards a cohesive technical vision across multiple roadmap items that are built across multiple teams
  • Defines technical strategy within their scope and executes to improve the area's products, infrastructure, or processes
  • Mentors multiple engineers to develop new technical leadership for the company
  • Lead large scale initiatives across multiple teams spanning multiple months
  • Dig into performance and scalability issues to drive breakthrough solutions

Other

  • Enjoy shipping code early & often in an agile fashion, pairing with product management to craft better software by soliciting feedback from tens of thousands of end users
  • Like working on small, autonomous agile teams
  • Have ownership of features, but collaborate with everyone to make sure we produce the right solution
  • 10+ years of experience
  • Base Pay Range For US Locations: $220,000—$330,000 USD