Klaviyo · 9 hours ago
Security Engineer Co-op (Fall 2026)
Boston, MA
Full-time
Onsite
New Grad
$49/hr - $49/hrKlaviyo is a company that empowers creators to make first-party data accessible and actionable. They are seeking a Security Engineering Co-op to work on substantial projects that involve developing internal security tools and automating workflows, while gaining exposure to various technologies.
AdvertisingAnalyticsE-CommerceMarketing AutomationSoftware
Responsibilities
Develop internal security tooling in support of Security Operations mission
Experiment with and incorporate AI technologies into development practices
Build integrations and automate Security Operations workflows
Contribute to establishing telemetry data across Klaviyo cloud environments, platforms, and technologies
Work on big data problems to help identify cyber threats
Create heuristics and statistical models to find security anomalies
Ship code in an agile fashion, pairing with various Security Operations or Engineering Teams to craft better software by soliciting feedback
Work on a cloud first product, learning about scalable platforms and applying those skills in our production security environment
Help the entire company understand security best practices
Qualification
Required
Undergraduate with a target graduation date between December 2026 - May 2028 with a BA/BS in Computer Science, Engineering or similar field
Have at least one previous internship or co-op experience in Information Security or Security Engineering
A passion for building security tools and products that matter
Enjoy working with new technologies ranging from the frontend to backend, and are particularly passionate in multiple stack areas. You show this by having exposure to various technologies and have good instincts to pick 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
Preferred
Exposure to technologies such as Python, Django, Celery, MySQL, Cassandra, RabbitMQ, Redis, HTML, JavaScript, LESS, Backbone.js, React, Amazon Web Services (EC2, RDS, Aurora, etc.), Terraform, Ansible, Packer, and other DevOps tools
Benefits
Participation in the company’s annual cash bonus plan
Variable compensation (OTE) for sales and customer success roles
Equity
Sign-on payments
Comprehensive range of health, welfare, and wellbeing benefits based on eligibility
Company
Klaviyo
Klaviyo is an automation and email platform designed to help grow businesses.
Founded in 2012
1001-5000 employees
H1B Sponsorship
Klaviyo has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (47)
2024 (29)
2023 (24)
2022 (27)
2021 (21)
2020 (8)
Funding
Current Stage
Public CompanyTotal Funding
$1.35BKey Investors
ShopifySands Capital VenturesAccel
2025-08-13Post Ipo Secondary· $195.06M
2025-05-14Post Ipo Secondary· $372.95M
2023-09-20IPO
Leadership Team
Andrew Bialecki
CEO
Ed Hallen
Co-Founder, Chief Strategy Officer, Board Member
Recent News
Investing.com
2026-01-03
2025-12-17
Company data provided by crunchbase