Thank you for your interest in Klaviyo. Please note this is not the official application. We are thrilled that we have had incredible interest in our open positions. Because of this, unfortunately we cannot respond to all inquiries. We will reach out to you directly if we are interested in moving forward with you as a candidate.

2024 PROPOSED JD

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.

About our internship

Our Software Engineering internship is small, only 30-40 interns. This is purposeful - so we can ensure each intern has meaningful and robust projects that directly impact our product and customers. It also creates a tight-knit group of interns who get to bond with each other over the course of the summer.

Interns are valued members of our engineering department, which is made up of small, agile teams that collaborate across Klaviyo to constantly ship work that impacts our product. Interns have ownership over features, while also learning from and connecting with fellow Klaviyos from engineering, product, design, and beyond to make sure they craft the right solutions. We operate a real-time data platform coded in Python built for massive scale on Amazon Web Services (AWS).

We move fast here - interns work on projects at scale and often ship their work during the course of the summer. We offer a supportive environment where interns can test, fail, iterate and launch while building a solid technical foundation, awesome connections across the Klaviyo and having fun.

Interns come to Klaviyo with experience in a variety of coding languages, but they are all passionate about building, owning and scaling features end-to-end from scratch and breaking through any obstacle or technical challenge in their way.

How you’ll make an impact

• Own features that our 90K+ paying customers rely on daily to reach their consumers to drive their business forward
• Be responsible for the mission, technical direction and operations of projects that have immediate impact
• Architect and design robust and high performance data processing and storage systems leveraging new databases to serve different internal and external use cases
• Crafting our highly scalable real-time data pipeline that processes billions of events weekly across data sets growing to petabyte scale
• Work on a deep analytics system that provides insight into hundreds of terabytes of data

What We’re Looking For

• At least one previous software engineering internship with software development experience
• Graduating in December 2024 or May/June 2025
• Experience with some of these technologies and languages:
  • Python, Django, Celery
  • MySQL, Cassandra, Clickhouse, RabbitMQ, Redis
  • HTML, JavaScript, LESS, Backbone.js, React
  • Amazon Web Services (EC2, RDS, Aurora, etc.) Terraform, Ansible, Packer, and other DevOps tools
  • EMR, SageMaker
• Enjoy working with new technologies ranging from the frontend to backend and adept at selecting the right tool for any job
• Love digging into performance and scalability issues to drive breakthrough solutions-- whether it's a slow loading UI or too many clicks in a workflow, a database query timing out, or a queue that just won’t drain. You recognize all problems can be solved.
• Enjoy shipping code early & often in an agile fashion, pairing with product management to craft better software by soliciting feedback from thousands of end users
• Embrace Klaviyo’s “always learning” culture that fosters learning at every level, constantly pushing yourself to be a better engineer

Internship Logistics

• Our Summer Internship Program is a 10-week [June 3 - August 9] paid experience at our Boston, MA headquarters
• Before diving into individual teams and projects, all interns will complete Klaviyo Base Camp - a week-plus onboarding experience. Base Camp provides focused time to learn about Klaviyo, our product, the ins and outs of engineering and spend time getting to know other interns. This robust training experience ensures all interns join their teams fully prepared to dive into project work and make an immediate impact.
• Our Boston office is fun - our interns stay fueled with free snacks and drinks, take breaks with each other over a game of ping pong, nintendo or round of golf with our simulator, and relax in our speakeasy (yes you read that right!).
• Throughout the summer, Klaviyo interns attend social events to promote interaction beyond team and project work. In past years these events have included a Red Sox game, Boston Duck Tour, outings to SPIN and Flight Club in the Boston Seaport, ice cream socials, and Munch n Learns with Klaviyo senior leadership.
• Priority application deadline: October 10

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.

Upon request, you can receive additional information about the compensation and benefits for this role. Requests can be submitted here . Additional information regarding benefits can be found at klaviyorewards.com.

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.

Klaviyo (pronounced “clay-vee-oh”) is a leading customer data and 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. Our 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.