Senior Software Engineer, Applied AI (Customer Agent)
$148k - $222k • Boston, MA • Full-time
Posted 4mo ago
This job has been open for more than 60 days. It may no longer be actively hiring, so check with the company before putting a lot into an application.
Remote Work Policy
On-site
Employment Type
Full-time
Categories
AI Engineer
About the job
Klaviyo is seeking a Senior Software Engineer, Applied AI to join the Customer Agent team, focusing on building the future of Klaviyo's AI-native conversational platform. This role is critical in shaping autonomous service, AI-driven support, and agentic commerce experiences at scale. You will work across the full stack to design, build, and scale systems for intelligent workflows, conversational experiences, tool integrations, retrieval systems, and multi-channel customer engagement. The position involves developing foundational platform capabilities and customer-facing features that allow brands to launch and improve their own AI agents. As a senior engineer, you will tackle complex technical and product challenges, evaluate trade-offs, and provide technical leadership and mentorship, ensuring the delivery of reliable, scalable, and impactful solutions.
Responsibilities
- Design, build, and scale systems powering intelligent workflows and conversational experiences.
- Develop foundational platform capabilities and customer-facing features for AI agents.
- Lead projects, drive engineering quality, and mentor team members.
- Deploy well-designed, thoroughly tested solutions prioritizing reliability and scalability.
- Contribute to foundational platform decisions and improve agent intelligence and reliability.
- Collaborate deeply across engineering, product, design, data science, and go-to-market teams.
- Experiment with LLMs, AI tooling, or agentic workflows.
Requirements
- 7+ years of experience in a software engineering role.
- Proven track record of building high-quality, maintainable products and systems.
- Strong experience developing end-to-end software solutions or extensive full-stack experience.
- Experience building 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 team growth initiatives.
- Experience conducting code reviews and maintaining robust testing and deployment cycles.
- Curiosity and enthusiasm for AI-native product development.
- Strong product mindset and willingness to collaborate cross-functionally.
- Skills with Python and related technologies (nice to have).
- Skills with React and related technologies (nice to have).
- Experience building conversational AI systems, workflow engines, or agentic platforms (nice to have).
- Experience with retrieval systems, embeddings, eval frameworks, or LLM orchestration patterns (nice to have).
- Experience building cloud-native solutions, ideally with AWS (nice to have).
- Experience developing customer support, commerce, marketing, or customer data software solutions (nice to have).
- Experience with machine learning systems or AI infrastructure (nice to have).
- Experience building multi-tenant or highly configurable SaaS platforms (nice to have).
- Familiarity with observability, tracing, experimentation, or AI quality/evaluation tooling (nice to have).
Benefits
- Participation in the company’s annual cash bonus plan.
- Variable compensation (OTE) for sales and customer success roles.
- Equity.
- Sign-on payments.
- Comprehensive range of health, welfare, and wellbeing benefits.