Lead Software Engineer, Editors

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 careers.klaviyo.com 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 be building out different blocks that will make adoption of editors easy on other mobile channels. 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:
Our team has added a lot of functionality in helping users build out emails seamlessly. Our customers love different features that we have built for email editors and have been asking to provide similar editing capabilities for other mobile channels. As we look towards next year, the team is well positioned to invest in building long desired customer features for other devices ranging from new editor blocks, a personalization builder, in canvas editing, and integrating with AI to generate the content.
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.
• Strong knowledge of programming languages like Python and ecosystem. Experience with testing frameworks like Pytest.
• Familiar with HTML, CSS, and general web best practices
• Experience with RESTful and GraphQL APIs.
• Experience in writing automated tests for frontend and backend integration tests
• 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.

The pay range for this role is listed below. Sales roles are also eligible for variable compensation and hourly non-exempt roles are eligible for overtime in accordance with applicable law. This role is eligible for benefits, including: medical, dental and vision coverage, health savings accounts, flexible spending accounts, 401(k), flexible paid time off and company-paid holidays and a culture of learning that includes a learning allowance and access to a professional coaching service for all employees.
Base Pay Range For US Locations:
$192,000 - $288,000 USD
Get to Know Klaviyo
We're Klaviyo (pronounced clay-vee-oh). We empower creators to own their destiny by making first-party data accessible and actionable like never before. We see limitless potential for the technology we're developing to nurture personalized experiences in ecommerce and beyond. To reach our goals, we need our own crew of remarkable creators-ambitious and collaborative teammates who stay focused on our north star: delighting our customers. If you're ready to do the best work of your career, where you'll be welcomed as your whole self from day one and supported with generous benefits, we hope you'll join us.
Klaviyo is committed to a policy of equal opportunity and non-discrimination. We do not discriminate on the basis of race, ethnicity, citizenship, national origin, color, religion or religious creed, age, sex (including pregnancy), gender identity, sexual orientation, physical or mental disability, veteran or active military status, marital status, criminal record, genetics, retaliation, sexual harassment or any other characteristic protected by applicable law.
IMPORTANT NOTICE: Our company takes the security and privacy of job applicants very seriously. We will never ask for payment, bank details, or personal financial information as part of the application process. All our legitimate job postings can be found on our official career site. Please be cautious of job offers that come from non-company email addresses (@klaviyo.com), instant messaging platforms, or unsolicited calls.