Senior Software Engineer - Profiles, Identity, Consent

KlaviyoBoston, MA

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Overview

Schedule

Full-time

Career level

Senior-level

Job Description

Position Title: Senior Software Engineer

About the Team: Profile data is the bedrock upon which Klaviyo's entire product ecosystem is built. The Profiles, Identity, and Consent teams tackle massive distributed systems challenges, operating at a breathtaking scale-storing tens of billions of records and processing billions of reads and writes every single day. We own the highly available platform that defines "who" a customer is and "how" they can be reached. By partnering with data warehousing, segmentation, and messaging teams, you will architect the foundational data pipelines that power Klaviyo's core product capabilities worldwide.

Key Responsibilities:

Design and operate scalable distributed systems for identity resolution and consent
Collaborate cross-functionally to translate requirements into robust technical designs
Author technical design docs and service contracts for operational excellence
Participate in on-call rotations to continuously improve system reliability
Provide technical mentorship and conduct thoughtful code and design reviews
Delegate implementation to AI agents by defining clear intent and rigorously verifying outputs for security and correctness

Required Skills:

7+ years of software engineering experience with strong computer science fundamentals
Expertise in building backend service-oriented applications and REST/gRPC APIs
Hands-on experience scaling distributed systems for performance and consistency.
Proficiency with streaming and batch processing systems
Production experience with relational database schema design and optimization
Excellent communication skills for leading execution and driving team alignment
BA/BS in Computer Science, a related field, or equivalent practical experience
Expertise in agentic AI workflows to safely increase development throughput while preserving architectural coherence

Team Tech Stack:

Languages: Python, SQL, Golang
Databases: Aurora MySQL, ProxySQL, Redis
Streaming and Batch: Apache Kafka, Pulsar, Spark, Iceberg
Infrastructure: AWS, Terraform, Docker, Kubernetes, Buildkite

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

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FAQs About Senior Software Engineer - Profiles, Identity, Consent Jobs at Klaviyo

What is the work location for this position at Klaviyo?

This job at Klaviyo is located in Boston, MA, according to the details provided by the employer. Some roles may also include multiple work locations depending on the requirement.

What pay range can candidates expect for this role at Klaviyo?

Employer has not shared pay details for this role.

What employment applies to this position at Klaviyo?

Klaviyo lists this role as a Full-time position.

What experience level is required for this role at Klaviyo?

Klaviyo is looking for a candidate with "Senior-level" experience level.

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