engineering
Posted 3 weeks agoSenior Software Engineer, Customer Agent
at Klaviyo
Boston, United StatesOn-site
Requirements
- Our team is looking for a Senior Full Stack Engineer to help build the future of Customer Agent, Klaviyo’s AI-native conversational platform.
- In this role, you’ll play a critical part in shaping how autonomous service, AI-driven support, and agentic commerce experiences evolve at scale across millions of customer interactions.
- You’ll help develop both foundational platform capabilities and customer-facing experiences that enable brands to launch, customize, and continuously improve their own highly-configurable AI agents.
- The Customer Agent team is building one of Klaviyo’s most ambitious and strategic product areas: an extensible AI platform that enables brands to deliver personalized, autonomous customer experiences across channels like chat, email, SMS, and beyond.
- Every engineer is expected to think holistically about customer outcomes, collaborate deeply across engineering, product, design, data science, and go-to-market teams, and push beyond traditional role boundaries to help the team move faster.
- Success in this role means shipping high-quality systems quickly, contributing to foundational platform decisions, improving the intelligence and reliability of our agent experiences, and helping define how AI-powered customer engagement evolves at Klaviyo.
- experience in a software engineering role. Strong
- experience developing end-to-end software solutions or extensive
- experience across both front-end and back-end technologies. •
- Experience building scalable, customer-facing systems in fast-moving product environments - we operate like a startup inside of Klaviyo. •
- Experience leading projects and being accountable for technical and business outcomes. •
- Experience conducting code reviews and maintaining a robust testing and deployment cycle.
- Curiosity and enthusiasm for AI-native product development, including practical
- experience experimenting with LLMs, AI tooling, or agentic workflows in professional or personal projects.
- Excitement about leveraging AI to improve engineering velocity, customer experiences, and operational workflows.
- Skills with Python and related technologies.
- Experience building conversational AI systems, workflow engines, or agentic platforms. •
- Experience with retrieval systems, embeddings, eval frameworks, or LLM orchestration patterns. •
- Experience building cloud-native solutions, ideally with AWS. •
- Experience developing customer support, commerce, marketing, or customer data software solutions. •
- Experience with machine learning systems or AI infrastructure. •
- Experience building multi-tenant or highly configurable SaaS platforms.
- Familiarity with observability, tracing, experimentation, or AI quality/evaluation tooling. -
Experience
- A proven track record of building high-quality products and systems, with pride in writing clean, maintainable, high-quality code. 7+ years of
Benefits
- Our salary range reflects the cost of labor across various U.S. geographic markets.
- The range displayed below reflects the minimum and maximum target salaries for the position across all our US locations.
- The base salary offered for this position is determined by several factors, including the applicant’s job-related skills, relevant experience, education or training, and work location.
- In addition to base salary, our total compensation package may include participation in the company’s annual cash bonus plan, variable compensation (OTE) for sales and customer success roles, equity, sign-on payments, and a comprehensive range of health, welfare, and wellbeing
- Your recruiter can provide more details about the specific salary/OTE range for your preferred location during the hiring process.
- Base Pay Range For US Locations: $148,000 — $222,000 USD
Contact
- Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny. About the Role
Additional details
- At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day.
- We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements.
- If you’re a close but not exact match with the description, we hope you’ll still consider applying.
- You’ll work across the stack to design, build, and scale systems that power intelligent workflows, conversational experiences, tools integrations, retrieval systems, onboarding flows, observability, and multi-channel customer engagement.
- As a Senior Engineer, you’ll tackle complex technical and product challenges, develop multiple solution paths, and evaluate business and architectural trade-offs to determine the best approach.
- You’ll also act as a technical leader and mentor, driving engineering quality, execution, and decision-making across projects.
- Additionally, you’ll be responsible for deploying well-designed, thoroughly tested solutions that prioritize reliability, scalability, and customer impact.
- We operate with high ownership, rapid iteration cycles, and a strong bias toward execution.
- Experience mentoring team members or driving initiatives that help the team grow and learn new skills. •
- A strong product mindset and willingness to collaborate cross-functionally to solve ambiguous problems with urgency and pragmatism. Nice to Have