Engineering Manager, Profile Traits
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Job Location:
Boston, NH - USA
Monthly Salary:
Not Disclosed
Posted on:
20 hours ago
Vacancies:
1 Vacancy
Job Summary
Hybrid 3x/week out of Boston.
At Klaviyo we empower creators and businesses to own their customer relationships. Our platform processes billions of events and powers real-time personalization automation and analytics for thousands of customers. At the core of this platform is our data infrastructure the systems that ingest store transform and serve customer data at scale.
About the Role
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.
What Youll Do
- Lead mentor and grow a team of engineers building Klaviyos 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 Youll Work On
- High-QPS stateful systems supporting real-time and nearline profile updates
- Schema evolution and backward compatibility for long-lived customer data
- Mechanisms for trait computation backfills and data migrations
- Improving debuggability observability and operational maturity
- Scaling profile read and write paths to support new product capabilities
Who You AreRequired Qualifications
- 810 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 Have
- 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)
Why This Role Matters
Profile traits are how customers experience their data in Klaviyo. Small decisions in these systems can have outsized impact from segmentation accuracy to real-time personalization to AI-driven insights. This role offers the opportunity to shape a core platform capability while leading a team solving complex high-impact technical problems.
Technologies We Use
Our stack evolves with our needs but today includes:
- Distributed services built primarily in Python and Go
- Cloud infrastructure on AWS
- Stream processing and data pipelines at scale
- A mix of real-time nearline and analytical data systems
We use Covey as part of our hiring and / or promotional process. For jobs or candidates in NYC certain features may qualify it as an AEDT. As part of the evaluation process we provide Covey with job requirements and candidate submitted applications. We began using Covey Scout for Inbound on April 3 2025.
Please see the independent bias audit report covering our use of Covey here
Required Experience:
Manager
Key Skills
- Hospitality Experience
- Go
- Management Experience
- React
- Redux
- Node.js
- AWS
- Mechanical Engineering
- Team Management
- Leadership Experience
- Mentoring
- Distributed Systems
About Company
Klaviyo unifies AI-powered email marketing and SMS to drive growth, retention, and measurable results. Build personalized, omnichannel experiences across WhatsApp, ecommerce, and more with K:AI Agents.
