Hiring: Software Engineer II - Growth Company: Klaviyo Location: Boston, MA Job Posted Time: 2026-09-16 13:06:39 Target Skills & Keywords : A/B Testing, AWS, Ansible, Aurora, Cassandra, Django, EC2, HTML, JavaScript, MySQL, Packer, Python, RDS, RabbitMQ, React, Redis, Terraform, TypeScript, User Experience About the job Required Skills: •How You Will Make a Difference •Implement user-experience improvements across the Klaviyo product, especially in areas that affect new customers. •Design and implement A/B tests to validate ideas, and interpret the results of these tests to inform iterative improvements to the product. •Partner cross-functionally with marketing, data-science, sales, and engineering teams to discover areas for improvement, as well as engaging with customers directly to learn more about how we can better serve their needs. •Help us improve our experimentation and development processes, and mentor other engineers on the team. •Clearly define the goal, constraints, and context for AI agents, while remaining responsible for the correctness of the implementation, with a focus on security, performance, and maintainability. Qualifications: •Have a background in full stack software engineering with experience building and improving products with an emphasis on user-facing features, along with the APIs and infrastructure to support them. •Passionate about growing and improving a product on a daily basis using a data driven mindset. •Demonstrated ability and success in using AI-driven software delivery practices and methods and/or a willingness and excitement to learn. •Thrives in an entrepreneurial type environment that is fast paced, customer focused, and strategic. •Technologies We Use (not Exhaustive) •Amazon Web Services, Terraform, Ansible, Packer, and other DevOps tools •It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability. •In addition to base salary, our total compensation package may include participation in the company’s annual cash bonus plan, variable compensation (OTE) for sales and customer success roles, equity, sign-on payments, and a comprehensive range of health, welfare, and wellbeing benefits based on eligibility. •Your recruiter can provide more details about the specific salary/OTE range for your preferred location during the hiring process. Compensation: •$116,000 - $174,000 / year Interested candidates, please apply directly through the job posting on company's career page or try via AI auto apply on this platform. Don't miss this opportunity to join a forward-thinking team!