Lead Solutions Engineer, Large Enterprise

About the Opportunity

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  to see how we empower creators to own their own destiny.

At Klaviyo, the Sales team prides themselves on being marketing and product experts. While most companies hire pre-sales Solutions Engineers to just give demos, fill out questionnaires, and only explain setups, that makes us yawn.

We re looking for a Lead Solutions Engineer who brings deep technical mastery, strategic thinking, and the ability to own the most complex, high-stakes Large-Enterprise deals. This is a high-impact individual contributor role for someone who gets energized by ambiguity, rolls up their sleeves to master our product at a molecular level, and uses AI and automation to punch above their weight.

As an L3 Lead SE, you ll be a trusted advisor to both customers and our sales organization - leading technical strategy in 6-7 figure deals, owning solution design, and setting the standard for SE excellence through your work.

We re technical sellers who drive revenue by winning complex Enterprise deals. Our job is to lead the technical win - building champions, proving value, and ensuring prospects choose Klaviyo over the competition. We work directly with customers to architect solutions that integrate seamlessly into their tech stacks, taking a consultant-first approach that builds confidence and secures technical buy-in.

Beyond closing deals, we use customer engagements as opportunities to prototype and ship improvements to Klaviyo. Recent team projects include: AI-powered demo data generators, a public Chrome extension for troubleshooting API calls, web SDK injectors, and templatized mobile apps for showcasing our SDK capabilities.

If you re a creator excited by winning high-stakes deals, prototyping technical solutions, and driving strategic revenue outcomes - this could be for you.

• Lead the Technical Win in High-Stakes, Complex Deals — Own technical strategy for the most complex Enterprise opportunities - navigating multi-layered stakeholder environments, competitive pressures, and sophisticated buying processes with minimal oversight
• Drive advanced technical discovery — uncovering nuanced pain points and proactively identifying differentiation opportunities
• Host technical workshops aligning solutions to business outcomes with executive presence and strategic communication
• Architect and execute Proof of Value plans that achieve technical selection over competition
• Partner with AEs on deal strategy, bringing competitive intelligence and industry expertise to influence outcomes

• Serve as a domain expert in marketing technology, CDPs, AI-driven personalization, analytics, and eCommerce
• Act as go-to resource for competitive and industry landscape questions
• Build strong R&D relationships, actively collaborating to drive positive outcomes and shape Klaviyo s roadmap
• Contribute high-impact content to the SA Learning Library and mentor peers through example

• Become a complete expert in Klaviyo s platform from data pipelines and integration codebases to technical tradeoffs between implementations
• Develop broad, advanced familiarity with web development, APIs, cloud computing, and software development practices - confidently coaching experienced engineers on complex solutions
• Leverage AI tools and automation to scale your impact and deliver better customer outcomes
• Prototype solutions and build proof-of-concepts that demonstrate Klaviyo s differentiation

Required:

• 7+ years in Solutions Engineering or Pre-Sales - with 3+ years leading technical strategy in high-complexity Enterprise deals (6-7 figures) with…