Full-Time

Lead Software Engineer

Posted on 12/22/2022

Klaviyo

Klaviyo

1,001-5,000 employees

Unified marketing automation for personalized communication

Consumer Software

Compensation Overview

$2.5 - $22

Senior

London, UK

Required Skills
Babel
JavaScript
React.js
Jest
TypeScript
Jenkins
REST APIs
Webpack
HTML/CSS
Requirements
  • An experienced engineer who has successfully internationalised a complex SaaS product using React
  • 2+ years of professional experience with React
  • Strong knowledge of vanilla JS, ES2015+ syntax, and the Javascript ecosystem as a whole
  • Familiar with HTML, CSS, and general web best practices
  • Comfortable working across different parts of a large codebase
  • Highly collaborative and communicative
Responsibilities
  • Design, build, and maintain a robust frontend system to make internationalisation integrated throughout the software development lifecycle. The code you write will help empower an organisation of 100+ engineers (and counting) ship frontend changes faster and more safely
  • Mentor the engineering team at large on how to write frontend code effectively, with a focus on internationalisation patterns
Desired Qualifications
  • Experience with Typescript
  • Experience with custom frontend build systems + tooling (e.g. Webpack, Babel, TypeScript, ESLint, Jest, Jenkins, CDNs, etc.)
  • Developing application APIs (e.g. REST, GraphQL, JSON Schema, or JSON:API, etc)
  • Having established best practices in how a company writes, tests, and deploys frontend code
  • Constantly thinking about frontend performance. If shaving kilobytes off a JS bundle or fixing wasted renders sounds appealing, we want to hear from you
  • Authorisation to work in the UK without restriction

Klaviyo provides a unified marketing automation platform for personalized email, SMS, and push notifications, leveraging advanced segmentation, behavior-based automation, AI-driven optimization, and targeted list growth tools, supported by over 300 tech integrations.

Company Stage

IPO

Total Funding

$1.5B

Headquarters

Boston, Massachusetts

Founded

2012

Growth & Insights
Headcount

6 month growth

15%

1 year growth

39%

2 year growth

60%
INACTIVE