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Software Engineer, Deliverability Insights

  • London, UK
  • Engineering

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. Want to learn more about life at Klaviyo? Visit to see how we empower creators to own their own destiny.

About the Role:

This role represents a chance to take part in building out a highly requested product feature in Klaviyo. If you like having autonomy in your work and are excited to work on features that matter, this is a rare opportunity.

As a Software Engineer on our Deliverability Insights team you will build out new reporting surfaces in Klaviyo centered on deliverability metrics. This will allow Klaviyo customers to better understand what they are doing well and where they can improve. This is a highly requested feature in the Klaviyo platform.

You will also build out experiences that guide customers through improving their message sending practices and deliverability. The team will work iteratively in an agile fashion and you will measure user interactions and other success criteria for all the features you build. The team is newly formed and only has a product manager at the moment. You will be one of two (planned) engineers on the team. As software engineer on the team you will be expected to take part and contribute to technical discussions and adhere to engineering best practices.

How you’ll make an impact:

  • You will build out features that let tens of thousands of Klaviyo customers better understand their deliverability metrics and messaging practices.
  • You will help architect and build systems that guide customers to action on poor deliverability metrics.
  • You will help maintain and operate delivered features and triage any problems that come up.

Technologies we use (not comprehensive):

  • Python, Django, React, Typescript
  • MySQL, RabbitMQ
  • AWS (EC2, RDS, EMR etc.), Kubernetes, Apache airflow

What you’ll need:

  • 2+ years of professional experience as a software engineer. 
  • You have an interest in full stack development,
  • Experienced with cloud-based system development and deployment, AWS preferred.
  • Experience with maintaining and improving performance, reliability, and scalability of systems. 
  • 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. 
  • Authorisation to work in the UK without restriction.
  • We offer hybrid working so all Klaviyos are required to come into the office twice a week

About Klaviyo

Klaviyo is a unified customer platform for email, SMS, and more that helps businesses of every size own their marketing, customer relationships, data, and destiny. Klaviyo has helped hundreds of thousands of businesses grow by fostering customer relationships and generating billions of dollars in eCommerce purchases. In 2022, Klaviyo was recognised by Glassdoor as a Best Place to Work in the U.S. small and medium company category and by Comparably as one of the Best Engineering Teams and Product & Design Teams.

About the Team

Our engineers are organised into a series of product pillars, where multiple teams are contributing to the goals of a larger mission. This role sits within the Intelligence pillar which focuses on two main goals: helping customers understand where their business is currently, as well as helping them predict and plan for where they want to grow in the future.

We are proud of our data and our goal is to harness that wealth of numbers and present them to our customers in a way that is actionable, intuitive, and accessible. In the Intelligence pillar, software engineers and data scientists work together to take ideas from inception to new data-powered features.

Klaviyo in EMEA : As part of the Klaviyo team you will be looked after with some great benefits locally in EMEA including equity for all, private health cover for you and discounted for your household, financial and professional coaching, a generous annual learning allowance (£2.5k), 22 weeks full pay primary caregiver leave (16 week secondary) and free books (yes, any books!) to name a few.

Get to Know Klaviyo

We’re Klaviyo (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.

Upon request, you can receive additional information about the compensation and benefits for this role. Requests can be submitted here . Additional information regarding benefits can be found at .

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.

You can find our Job Applicant Privacy Notice here .

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