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# Software Engineer II - SMS International

- **Company:** Klaviyos
- **Location:** UK
- **Experience:** Experienced
- **Salary:** £68,000.0 - £102,000.0
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, Amazon Web Services, Amazon Elastic Compute Cloud, Application Performance Management, Database Design, Software Debugging, Django Web Framework, Amazon DynamoDB, Python (Programming Language), MySQL, RabbitMQ, Redis, Software Engineering, Systems Architecture, ReactJS, Amazon ElastiCache, Large Language Models, Claude Code, Grafana, Kubernetes, Celery, Amazon Simple Queue Service (SQS), Terraform, Splunk, Golang, Microservices
- **Published:** October 2, 2026
- **Apply:** https://startup.jobs/software-engineer-ii-sms-international-klaviyo-2-10247058

## About the Role

* 3-5 years of experience in a software engineering discipline
 * 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

Nice to Have

 * Experience creating new services with scalability in mind. Exposure to large-scale system design
 * Experience with AWS or any similar cloud provider
 * Communication domain experience

Our salary range reflects the cost of labour in the country where the job post is advertised. The base salary offered for this position is determined by several factors, including the applicant's job-related skills, relevant experience, education or training, and work location.

## Description

As a Fullstack Software Engineer II joining the SMS International team you will be working with a team of 4 other colleagues to deliver RCS and SMS International expansion to meet the company's objectives. You will get the chance to build brand new services, understand how they fit into the bigger picture and plan how to architect and scale them successfully to serve our customers.

Technologies we use (not exhaustive):

 * Claude Code, with other LLM tools also available
 * Python, Django, Go, React, RabbitMQ, Celery, MySQL, DynamoDB, Elasticache, Redis
 * Amazon Web Services (EC2, RDS, Aurora, SQS etc.), Terraform, Kubernetes, Splunk, Buildkite, Grafana, and other modern DevOps tools


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