Software Engineer Co-op (Spring 2027)

The posting, as Klaviyo Campus wrote it

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.

At Klaviyo, our Engineering teams build scalable, high-performance systems that power both our product and the infrastructure behind it. As a Software Engineering Co-op, you'll be part of a fast-paced, collaborative team whose work reaches thousands of customers worldwide. You won't just be writing code. You'll be solving hard problems, shaping how users experience our product, and learning from engineers who've been doing this for a while.

This co-op is your shot to put your software development skills to work in production. You'll be embedded on one of our engineering teams (see overviews below), take on projects that matter to our customers, and build a technical foundation as you make connections across the business.

Our co-ops come from all kinds of coding backgrounds, but they all share one thing: they're excited to build, own, and scale features end-to-end, from scratch. You'll work alongside experienced engineers, take on hard technical problems, and ship code that supports Klaviyo's mission. We're an AI-first company, so you'll be expected to use AI tools to support your work, learn faster, and do your best work here.

How you'll make an impact

• Own features that our 180K+ paying customers rely on daily to reach their consumers and grow their business.
• Take responsibility for the mission, technical direction, and operation of projects with immediate impact.
• Own the full lifecycle of your code: writing it, testing it, shipping it, and making it better over time. Ownership is expected here, not just encouraged.
• Build and ship features that meet a high bar and grow your technical skills while you do it.
• Get hands-on debugging real issues, both locally and in production.
• Contribute to documentation and support your team during incidents (real-world problems teach you things a tutorial never will).
• Work closely with your teammates: ask questions, share ideas, and get better by taking feedback seriously.
• Learn to use the right tool for the job, lean into AI, and keep looking for ways to make things better.
• Put AI at the center of how you work to move faster. Build smarter systems and better workflows from the ground up.

Who you are

• At least one previous software engineering internship or co-op, with hands-on software development experience
• Currently pursuing a degree in Computer Science, Engineering, Data Science, Math/Statistics, or a related field
• Graduating in December 2027 or May/June 2028
• Experience with some of these technologies and languages:
• Python, Django, Typescript, React, Go
• MySQL, C

[…]
o (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.

AI fluency at Klaviyo includes responsible use of AI (including privacy, security, bias awareness, and human-in-the-loop). We provide accommodations as needed.

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. You can find our Job Applicant Privacy Notice here .

By clicking "Submit Application" you consent to Klaviyo processing your Personal Data in accordance with our Job Applicant Privacy Notice. If you do not wish for Klaviyo to process your Personal Data, please do not submit an application. You can find our Job Applicant Privacy Notice here .