Full Stack Software Engineer - People Systems

<div class="content-intro"><p><em>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. Want to learn more about life at Klaviyo? Visit <a class="_ymio1r31 _ypr0glyw _zcxs1o36 _mizu194a _1ah3dkaa _ra3xnqa1 _128mdkaa _1cvmnqa1 _4davt94y _4bfu18uv _1hms8stv _ajmmnqa1 _vchhusvi _kqswh2mm _ect4ttxp _syaz13af _1a3b18uv _4fpr8stv _5goinqa1 _f8pj13af _9oik18uv _1bnxglyw _jf4cnqa1 _30l313af _1nrm18uv _c2waglyw _1iohnqa1 _9h8h12zz _10531ra0 _1ien1ra0 _n0fx1ra0 _1vhv17z1" href="http://klaviyo.com/careers" data-renderer-mark="true">klaviyo.com/careers</a>&nbsp;to see how we empower creators to own their own destiny.</em></p></div><p>Klaviyo is building an AI-first company—and that starts with how we support and scale our people.</p> <p>We’re looking for a <strong>Lead People Technology Engineer</strong> to be the first dedicated AI engineer within our People Technology (KPPL) team. As an early leader in this space, you’ll reimagine how our People teams operate in an AI-first world by shaping our architecture, standards, and long-term vision.</p> <p>You’ll partner across People Operations, Talent Acquisition, Talent, and Finance to design and build intelligent systems that transform how we hire, develop, retain, and support Klaviyos globally. This role is not just about applying AI it’s about defining how AI becomes embedded into the employee lifecycle at Klaviyo.</p> <p>What You’ll Be Doing</p> <p>AI-First People Systems &amp; Architecture</p> <ul> <li>Reimagine core People workflows (recruiting, onboarding, performance, daily tasks) through an AI-first lens, not just incremental automation</li> <li>Design and build AI-powered workflows, copilots, and agents that automate and augment People processes across the employee lifecycle</li> <li>Architect and implement systems that integrate across SaaS such as Workday, Greenhouse, Sana, and internal Klaviyo platforms</li> <li>Partner with our internal IT AI team and establish best practices for:</li> <ul> <li>Prompt engineering and evaluation</li> <li>LLM system design and orchestration</li> <li>Versioning, testing, security, and observability of AI systems</li> </ul> <li>Enable AI Use Cases (copilots, assistants, automated workflows) that drive faster execution and better decision-making for People teams</li> <li>Collaborate with stakeholders to translate business problems into scalable AI solutions</li> </ul> <p><strong>Driving an AI-First Operating Model</strong></p> <ul> <li>Identify high-leverage opportunities to replace manual workflows with AI-native solutions</li> <li>Define and track success metrics tied to efficiency gains, time savings, and operational effectiveness</li> <li>Help the People organization shift toward AI-augmented ways of working</li> <li>Act as a thought partner to People leadership on what’s possible with AI, not just what’s requested</li> <li>Responsible AI, Privacy &amp; Governance: Design systems that handle sensitive employee data with security, privacy, and trust at the core</li> <li>Partner with Security, Legal, and Global IT to ensure compliant and ethical AI deployment</li> </ul> <p><strong>Cross-Functional Collaboration &amp; Enablement</strong></p> <ul> <li>Work closely with Security, IT, and GTM Systems to align on shared AI infrastructure and standards</li> <li>Contribute to and adopt company-wide AI patterns, tooling, and best practices</li> <li>Enable People teams to leverage AI by building:</li> <ul> <li>Reusable frameworks and workflows</li> <li>Playbooks and training materials</li> </ul> <li>Help non-technical stakeholders confidently use and iterate on AI-powered tools</li> </ul> <p><strong>Technical Leadership</strong></p> <ul> <li>Advocate for scalable, well-governed AI systems that integrate cleanly into Klaviyo’s broader tech ecosystem</li> <li>Act as a key voice in shaping how Klaviyo becomes AI-first internally, starting with People systems</li> </ul> <p><strong>What Makes You a Great Fit</strong></p> <ul> <li>Passion and Curiosity to experiment and reimagine P