Software Engineer II - Editors

Klaviyo, Inc.

Job Overview

Location

Boston, MA

Job Type

Full-time

Full Job Description

📋 Description

• As a Software Engineer II on Klaviyo’s Editors team, you will play a pivotal role in building and scaling the core editor experiences that power Klaviyo’s product suite, enabling customers to create highly customizable, dynamic content using product feeds, real-time event data, and AI-driven personalization—directly impacting how creators own their destiny through intuitive, performant interfaces.
• You will design, develop, and maintain reusable frontend components using React, TypeScript, and Redux, while collaborating across the stack with Python/Django backends to implement features like in-canvas editing, AI-powered content generation, and new editor blocks, ensuring seamless, high-performance user experiences across web and mobile platforms.
• You will partner closely with Product, Design, and Data Science teams to translate product vision into technical implementation, owning features from requirements through testing and deployment, with a focus on solving complex scaling challenges using queues, caches, CDNs, and web workers.
• You will contribute to a team that owns the foundational editor infrastructure used across all Klaviyo products, working in a hybrid Boston-based environment (3 days in-office, 2 days remote) with access to cutting-edge tools like AWS, Terraform, MySQL, RabbitMQ, and Redis, and opportunities to lead multi-quarter cross-functional initiatives.
• You will grow your expertise in full-stack engineering, AI-integrated product development, and scalable frontend architecture, while mentoring peers and sharing knowledge in a culture that values psychological safety, continuous learning, and ownership—positioning you to shape the future of creator-centric marketing technology at a rapidly growing, mission-driven company.

🎯 Requirements

• 3+ years of professional software engineering experience with proven ability to deliver and ship production-grade features.
• Strong hands-on expertise in React, TypeScript, Redux, JavaScript, HTML, and CSS, with a track record of building reusable, performant UI components.
• Proficiency in Python and Django (or equivalent backend frameworks), including experience working with large codebases and multiple layers of the stack.
• Familiarity with automated testing practices and frameworks such as Cypress, pytest, and integration/end-to-end testing.
• Experience with RESTful and GraphQL APIs, including evolving data models to support product needs.
• Demonstrated ability to own work end-to-end—from requirements and edge cases to implementation, testing, and deployment—and motivation to solve tough problems collaboratively.
• Proven experience leading complex, multi-quarter projects involving cross-team collaboration with Product, Design, and Data Science.
• Knowledge of performance optimization techniques including queues, caches, CDNs, and web workers to address scaling challenges.
• Collaborative, communicative, and eager to learn and share knowledge in a team-oriented environment.

🏖️ Benefits

• Competitive base salary range of $116,000–$174,000 USD, adjusted for location, experience, and skills.
• Participation in Klaviyo’s annual cash bonus plan and equity compensation as part of a total rewards package.
• Comprehensive health, welfare, and wellbeing benefits including medical, dental, vision, and mental health support.
• Hybrid work model: 3 days in-office in Boston, 2 days remote per week.
• Access to cutting-edge tools and technologies including AWS, Terraform, React, TypeScript, Python/Django, and AI-powered development environments.
• Opportunities for professional growth, mentorship, and leadership in a mission-driven company committed to equal opportunity and non-discrimination.

Skills & Technologies

Python

JavaScript

TypeScript

React

Django

Remote

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Klaviyo, Inc.

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About Klaviyo, Inc.

Klaviyo is a cloud-based marketing automation platform that aggregates customer data from e-commerce stores, email, SMS, and ads to build unified profiles. Marketers use its segmentation, predictive analytics, and omnichannel campaigns to personalize messages, trigger flows, and measure revenue attribution. Designed for online retailers, it integrates with Shopify, WooCommerce, Magento, and major payment gateways, offering real-time dashboards and GDPR-compliant tools to grow repeat sales and customer lifetime value.

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