Fullstack Software Engineer II: SMS & RCS Expansion

Academic Key; Greater London; Hybrid; GBP 68,000 - 102,000; Full time

Job summary

Klaviyo is hiring a Fullstack Software Engineer II for the SMS International team. You will build and scale new services, architect scalable solutions, and work across mobile messaging channels to empower ecommerce clients worldwide.

You will collaborate with product and engineering peers, apply AI tools to business outcomes, and contribute to high‑performing, scalable systems in a modern cloud stack.

Qualifications

• 3–5 years of software engineering experience.
• Experience with full stack application development.
• Experience with monolithic and microservices architectures.
• Experience with AI tools to deliver business outcomes.
• Experience with database design for high query volumes.
• Experience with CI/CD pipelines.
• Ability to collaborate across teams and disciplines.

Responsibilities

• Build and scale brand new services within the SMS International team.
• Architect and implement scalable solutions across mobile messaging channels.
• Collaborate with cross‑functional teams to deliver reliable software.

Skills

Full stack development

AI tools experience

CI/CD pipelines

Performance debugging

Collaborative teamwork

Tools

AWS

DynamoDB

Redis

Kubernetes

Terraform

RabbitMQ

MySQL

Job description

Klaviyo is hiring a Fullstack Software Engineer II for the SMS International team. You will build and scale new services, architect scalable solutions, and work across mobile messaging channels to empower ecommerce clients worldwide.

You will collaborate with product and engineering peers, apply AI tools to business outcomes, and contribute to high‑performing, scalable systems in a modern cloud stack.