Klaviyo

Senior Software Engineer - Customer Agent

Klaviyo
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3 months ago
Boston, MA, USASenior
H1B sponsor

Base Salary

$148k - $222k/yr

Responsibilities

  • Design, build, and scale systems powering intelligent workflows, conversational experiences, tool integrations, retrieval systems, onboarding flows, observability, and multi-channel customer engagement.
  • Develop foundational platform capabilities and customer-facing experiences for highly configurable AI agents.
  • Evaluate technical and business trade-offs and determine effective architectural and product approaches.
  • Lead technical decision-making, mentor engineers, and drive engineering quality and execution across projects.
  • Deploy thoroughly tested solutions that prioritize reliability, scalability, and customer impact.
  • Collaborate with engineering, product, design, data science, and go-to-market teams to improve AI agent intelligence and reliability.

Requirements

  • 7+ years of experience in a software engineering role.
  • Strong experience developing end-to-end software solutions or extensive experience across front-end and back-end technologies.
  • Proven experience building high-quality, scalable, customer-facing systems in fast-moving product environments.
  • Experience leading projects and being accountable for technical and business outcomes.
  • Experience mentoring team members or driving initiatives that help teams develop new skills.
  • Experience conducting code reviews and maintaining robust testing and deployment cycles.
  • Practical experience experimenting with LLMs, AI tooling, or agentic workflows in professional or personal projects.
  • Skills with Python and related technologies are preferred.
  • Skills with React and related technologies are preferred.
  • Experience with conversational AI systems, workflow engines, agentic platforms, retrieval systems, embeddings, evaluation frameworks, or LLM orchestration patterns is preferred.
  • Experience with cloud-native solutions, ideally AWS, is preferred.
  • Experience with machine learning systems, AI infrastructure, multi-tenant SaaS platforms, observability, tracing, experimentation, or AI quality and evaluation tooling is preferred.

Benefits

  • Up to 10% travel may be required for onboarding, client or partner work, team meetings, and industry events, with travel coordinated in advance.
  • Comprehensive health, welfare, and wellbeing benefits based on eligibility.
  • Potential annual cash bonus, variable compensation, equity, and sign-on payments based on eligibility.
  • US base pay range of $148,000–$222,000.
Klaviyo

About Klaviyo

1,001-5,000 employees

Klaviyo builds a subscription SaaS platform that lets e-commerce and consumer brands use first-party data to run targeted email, SMS, and push campaigns, with built-in automation and analytics. The product also includes B2C CRM features for segmentation, A/B testing, and customer lifecycle workflows. Founded in 2012 and headquartered in Boston, it is a public company (NYSE: KVYO) used by brands such as Mattel and Glossier.

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