Senior Software Engineer - Distributed Systems

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.

Klaviyo is growing fast and we have openings for all skill levels across all of our teams. Learn more about our engineering culture at https://klaviyo.tech

We love tackling tough engineering problems and look for Engineers who specialize in certain areas but are passionate about building, owning & scaling features end to end from scratch and breaking through any obstacle or technical challenge in their way. We push each other to move out of our comfort zone, learn new technologies and work hard to ensure each day is better than the last.

Klaviyo operates a real-time data platform built for massive scale on Amazon Web Services (AWS). Engineers come to Klaviyo with experience in a variety of languages and from a number of disciplines.

Team Overview

The Groups Team is responsible for the segmentation and audience creation functionality in Klaviyo. We process and store all of our customer’s data about their customers (profiles) and we allow them to group those profiles into audiences with our powerful segmentation engine. They can then send messages to those audiences or use them as a basis for reporting and analytics. We process billions of segment updates in real-time every day.

Responsibilities

As an engineer on this team, you will be responsible for designing, building, and maintaining systems to support core product areas in Klaviyo. You will work with a cross functional team to help refine feature specifications, write technical design documents, create system infrastructure, write high quality code, and operate large scale systems in production. You will also review other engineer’s designs and code, and provide technical mentorship to other engineers on the team and in the broader engineering organization.

Team Tech Stack

• Python
• Django
• MySQL
• ProxySQL
• ClickHouse
• Kafka
• ZooKeeper
• Redis
• Parquet
• Iceberg
• AWS

Required Skills

• 7+ years of experience in a software engineering discipline
• Highly skilled in using at least one modern programming language
• Experience designing, building, and operating distributed systems in a cloud computing environment
• Experience with OLTP and OLAP databases
• schema design
• normalization / denormalization trade-offs
• performance
• operations
• Experience with high volume data processing and storage systems
• Experience using Linux operating systems
• Able to communicate well, both verbally and in writing
• Able to work with others on a team
• Able to learn continuously and adapt to a high growth environment
• Able to stick with and solve difficult problems
• BA or BS Degree in Computer Science, related field, or equivalent experience

Massachusetts Applicants:
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.

Our salary range reflects the cost of labor across various U.S. geographic markets. The range displayed below reflects the minimum and maximum target salaries for the position across all our US locations. The base salary offered for this position is determined by several factors, including the applicant’s job-related skills, relevant experience, education or training, and work location.

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. Please visit Klaviyo Rewards to find out more about our Total Rewards package.

Your recruiter can provide more details about the specific salary/OTE range for your preferred location during the hiring process.

Base Pay Range For US Locations:$152,000—$228,000 USD

Get to Know Klaviyo

We’re Klaviyo (pronounced clay-vee-oh). We em