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Lead Software Engineer, Editors Team (Remote)

  • Boston, MA
  • Engineering

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.

Why You Should Join the Editors Team:

As a Lead Software Engineer joining the Editors team you can expect to be deeply involved in technical discussions on how we scale our systems, roll out new features, and grow the team.

The Editors team is the owner of Klaviyo’s browser based email template editor. This team focuses on building intuitive and powerful interfaces to create highly customizable and dynamic content ranging from product feeds, real time event data, and more. This product area is core to Klaviyo’s continued success. 

There are ample opportunities for growth given the scope of this role and the team’s central role in Klaviyo’s product.

As a Lead Software Engineer, you will  have ownership of the team’s mission, goals, and roadmap while collaborating along-side technical product owners and product managers. Together, you'll define scope and specifications while refining RFCs to ensure deliverables are met and stability is maintained. You will help drive the narrative for the technical evolution of the overall editors space as we invest in both our current and future editor experiences.

Using Typescript, React, Python, and Django you'll help craft scalable systems enabling delightful customer experiences and enable Klaviyo’s future growth.

For some context on what we’ve done last year and looking forward:

In 2021 and early 2022, we released an ambitious new editor experience written in TypeScript leveraging React. This system came with several powerful features including the ability to have  universal content  shared across all email templates this May. Through the latter half of this year we have focused on growing the team and iterative development to improve the usability and performance of the editor.

As we look toward next year, the team is well positioned to invest in building long desired customer features ranging from new editor blocks, a personalization builder, in canvas editing, and more.

How You Will Make a Difference 

  • Drive dramatic growth in Klaviyo’s core product areas: Email and SMS Templates.
  • Wholly own features that tens thousands of our customers rely on daily to reach 4B+ of consumers to drive their business forward
  • Be responsible for the technical/architectural evolution of our product area; identify and advocate for scalability, reliability, and maintainability needs
  • Contribute to your team, department, and Klaviyo strategy by developing options and plans that align with company worldwide growth
  • Be responsible for technical quality, teach others technical expertise and help them develop skills they need to improve within the organization
  • Guide system design and implementation trade-offs with business partners and your team. 
  • Drive complex projects with a team of great people which meaningfully contribute to our customers’ experience and Klaviyo’s success. 

Who You Are

  • Experience working on a SaaS product in a full stack capacity.
  • Strong knowledge of vanilla JS, ES2015+ syntax, React, and the Javascript ecosystem as a whole.
  • For the back end, strong knowledge of Python or Java, Kubernetes, Relational Databases and Queuing systems, caches is a plus.
  • Familiar with HTML, CSS, and general web best practices
  • Motivated by having ownership and leading others, excited about taking the initiative to solve tasks in collaboration with others..
  • Experienced with improving and developing: API’S, various data models for the product space you have led, and utilization of tools to drive infrastructure changes and make your product space be successful 
  • Comfortable working across different parts of a large codebase.
  • Highly collaborative and communicative.
  • You have an in-depth understanding of common web architectures when it comes to highly scalable systems.  
  • You know what tools to reach for based on the problem at hand: queues, caches, CDNs, web workers, etc.
  • Successfully led and delivered on complex projects spanning multiple quarters and involving at least two teams.

Get to Know Klaviyo

Klaviyo is a world-leading marketing automation platform dedicated to accelerating revenue and customer connection for online businesses. Klaviyo makes it easy to store, access, analyze and use transactional and behavioral data to power highly-targeted customer and prospect communications. The company's hybrid customer-data and marketing-platform model allows companies to grow by fostering direct relationships with customers, without giving up their valuable data to popular big-tech ad platforms. Over 265,000 innovative companies like Unilever, Custom Ink, Living Proof and Huckberry sell more with Klaviyo. Learn more at .

If you are a California, Colorado, Rhode Island, Washington, New York City, or Jersey City resident and this role is a remote role, you can receive additional information about the compensation and benefits for this role, which we will provide upon request. Requests can be submitted here . Additional information regarding benefits can be found at .

Klaviyo is committed to diversity and to a policy of equal employment opportunity and non-discrimination. We do not discriminate on the basis of race, color, religion, national origin, age, sex, marital status, ancestry, physical or mental disability, veteran status, gender identity, sexual orientation or any other characteristic protected by applicable law.

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