Logo of Huzzle


• Starts Jul 7

Front End Software Engineering Co-op (July-December 2024)

Logo of Klaviyo


24d ago

🚀 Off-cycle Internship


⌛ Closed
Applications are closed

Off-cycle Internship

Software EngineeringBoston


  • Co-ops 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. Co-ops 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 - co-ops work on meaningful and robust projects at scale and often ship their work during the course of the summer. We offer a supportive environment where co-ops can test, fail, iterate and launch while building a solid technical foundation, awesome connections across the Klaviyo and having fun.
  • Co-ops 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.


  • 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

Area of Responsibilities

Software Engineering


  • 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


Work type

Full time

Work mode


Start date

Jul 7, 2024