Profile Traits Engineering Manager

Klaviyo • Boston, MA

9d • Hybrid

About The Position

The Profile Traits team owns how customer profile data is represented, stored, mutated, and served across Klaviyo. Profile traits are one of the most critical primitives in the platform: they power segmentation, personalization, flows, analytics, and emerging AI-driven features.
As Engineering Manager, Profile Traits, you will lead a team of engineers responsible for building and scaling these foundational systems. This role sits at the intersection of distributed systems, data modeling, and product semantics, with a strong emphasis on correctness, performance, and long-term platform evolution.
You will partner closely with product managers and adjacent platform teams (Events, Identity & Consent, Segmentation, Flows) to ensure profile data remains reliable, fast, and easy to reason about as Klaviyo continues to grow.

Requirements

• 8–10+ years of software engineering experience
• 3+ years of engineering management experience
• Experience owning and evolving stateful or data-intensive systems at scale
• Strong understanding of distributed systems tradeoffs
• Proven ability to coach and develop senior engineers
• Experience partnering with Product on ambiguous, platform-oriented problems

Nice To Haves

• Experience with high-QPS OLTP systems
• Background in data consistency, data modeling, or schema evolution
• Experience supporting both online and analytical workloads
• Familiarity with cloud-native systems (AWS preferred)

Responsibilities

• Lead, mentor, and grow a team of engineers building Klaviyo’s profile traits platform
• Own systems responsible for profile attribute storage, mutation, and serving
• Drive technical and execution excellence across correctness, latency, and cost
• Partner with product and platform teams to define roadmaps and priorities
• Guide architectural decisions around schema evolution, consistency, and scale
• Participate in design and code reviews to maintain a high technical bar
• Foster a culture of ownership, collaboration, and continuous improvement

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: No Education Listed
• Number of Employees: 501-1,000 employees