Klaviyo is growing fast and we have openings for all skill levels across all of our teams. Learn more about our engineering culture at https://klaviyo.tech

We’re looking for entrepreneurial builders who want to work with a small team to rapidly iterate against new product areas. You and a small team will work closely with potential customers to build solutions to key problems they face. You’ll have the autonomy to move fast and get a product from zero to one, then help as we transition it for scale. 

Klaviyo operates a real-time data platform coded in Python built for massive scale on Amazon Web Services (AWS). Engineers come to Klaviyo with experience in a variety of languages and from a number of disciplines.

Technologies we use (not exhaustive):

• Python, Django, Celery, Java
• MySQL, Cassandra, RabbitMQ, Redis
• HTML, JavaScript, LESS, Backbone.js, React
• Amazon Web Services (EC2, RDS, Aurora, etc.)Terraform, Ansible, Packer, and other DevOps tools

How You’ll Make a Difference

• Launch new products as part of a small venture team exploring new revenue opportunities.
• Be empowered to own the mission, technical direction and operations of projects that have immediate impact
• Advance your technical skills in all facets ranging from front end web development and user experience to machine learning and massively parallelized data pipelines

Who You Are

• Entrepreneurial - you’ve launched your own companies or side projects are used to working quickly and iteratively based on customer feedback.
• Comfortable with ambiguity and quick iteration
• Have 5-7+ years of experience and have architected, built and delivered at least one complex system.
• Driven by solving customer problems and delivering value
• Ability to execute independently across a wide array of areas as well as mentor and level up others
• Experience setting higher-level technical direction and process with the help of peers and senior management
• Have experience building products that matter and pushing yourself and your team to be better engineers and build a product with passionate advocates
• Enjoy working with new technologies ranging from the frontend to backend, and are particularly passionate and an expert in multiple stack areas. You show this by having strong and opinionated experience with various technologies and know how to pick the right tool for any job
• Able to work with others to proactively set project and feature requirement, including work timelines prioritization