GTM Systems Developer Co-op (Fall 2026)

Klaviyo Campus • Boston, MA

15h • $31 - $31 • Onsite

About The Position

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. Klaviyo is seeking a GTM (Go-to-Market) Technology Software Developer Co-op to join our Global Technology Solutions team. In this role, you’ll help build and improve the software, integrations, and automation that power how our employees and internal teams work every day. You’ll work on our Go-to-Market Systems Team, supporting the tech stack across Sales, Customer Success, Marketing, and Partnerships. This is a hands-on engineering role where you’ll write production code, collaborate closely with stakeholders, and ship solutions that have immediate internal impact.

Requirements

• Undergraduate student graduating between December 2026 – May 2028 pursuing a degree in Computer Science, Software Engineering, Systems Engineering, Computer Information Systems , or a related field
• Have completed at least one prior software engineering internship or co-op
• Experience with one or more Python, Java, JavaScript
• Familiarity with APIs, databases, or web technologies
• Curious, self-motivated, and comfortable learning new systems and domains
• Strong problem-solving skills and enjoy working through ambiguity
• Clear communicator who enjoys collaborating with both technical and non-technical partners
• Detail-oriented and interested in building reliable, maintainable internal systems

Nice To Haves

• Enjoy shipping code early and often in an agile fashion while partnering with business users to craft better software by soliciting feedback and understanding business needs
• Embrace Klaviyo’s “always learning” culture that fosters learning at every level, constantly pushing yourself to be a better engineer
• You’ve already experimented with AI in work or personal projects, and you’re excited to dive in and learn fast.
• You’re hungry to responsibly explore new AI tools and workflows, finding ways to make your work smarter and more efficient.

Responsibilities

• Build and enhance APIs, integrations, and automations across GTM technology systems (Salesforce, Zendesk, and Hubspot)
• Collaborate with engineers and internal stakeholders to translate business needs into scalable technical solutions
• Improve internal user experiences by simplifying workflows, reducing manual steps, and increasing system reliability
• Participate in agile development practices , including sprint planning, code reviews, testing, and iterative delivery
• Write clear technical documentation and support testing across multiple user personas
• Support audit and compliance efforts through thoughtful system design, logging, and documentation
• Explore opportunities to apply modern tooling and automation to make internal systems more efficient

Benefits

• Our Boston office is fun!
• Our co-ops stay fueled with free snacks and drinks, take breaks over a game of ping pong, Nintendo Switch, or a round of golf in our golf simulator, and relax in our speakeasy.
• Throughout the program, Klaviyo co-ops attend social events to promote interaction beyond team and project work. In past years these events have included a Red Sox game, outings to Versus and Flight Club in the Boston Seaport, ice cream socials, and Ask Me Anything sessions with Klaviyo senior leadership.

What This Job Offers

• Job Type: Full-time
• Career Level: Intern