Fullstack Engineer II - SMS & RCS Growth

Klaviyo; Greater London; On-site; GBP 68,000 - 102,000; Full time

Job summary

Klaviyo is hiring a Fullstack Software Engineer II for the SMS International team within Mobile Platforms. You will join a small group to deliver RCS and SMS expansion, building new services and architecting scalable solutions to serve global ecommerce clients.

You will work with Python, Django, Go, React and modern DevOps tools on AWS, Kubernetes and cloud-native infrastructure. Strong full-stack skills and experience with microservices are essential for success.

Qualifications

• 3-5 years of experience in software engineering.
• Experience with full stack application development.
• Experience working with both monolithic and microservices architectures.
• Experience working with AI tools to deliver business outcomes.
• Experience with database design that can withstand high query volumes.
• Experience with CI/CD pipelines.
• Experience debugging performance issues and improving application performance.
• An interest and aptitude for collaboration across teams and disciplines.

Responsibilities

• Deliver RCS and SMS International expansion with the SMS International team.
• Build brand new services and plan architecture to scale for customers.
• Collaborate with cross-functional teams to integrate into the bigger platform.

Skills

Fullstack development

AI tools

CI/CD

Database design

Performance debugging

Monolithic & microservices

Collaborative cross-team work

Tools

Claude Code

Python

Django

Go

React

RabbitMQ

Celery

MySQL

DynamoDB

Elasticache

Redis

AWS

Terraform

Kubernetes

Splunk

Buildkite

Grafana

Job description

Klaviyo is hiring a Fullstack Software Engineer II for the SMS International team within Mobile Platforms. You will join a small group to deliver RCS and SMS expansion, building new services and architecting scalable solutions to serve global ecommerce clients.

You will work with Python, Django, Go, React and modern DevOps tools on AWS, Kubernetes and cloud-native infrastructure. Strong full-stack skills and experience with microservices are essential for success.