# Lead Software Engineer, Infrastructure Security at Klaviyo

> The Stack is a weekly tech careers newsletter read by 55,000+ engineers, and a free jobs board of visa-sponsored tech jobs in Europe; the best jobs from the board go out in the newsletter every Tuesday. This is one job from the board.

> Responsibilities: - Define the technical vision and long-ter

- **Company:** Klaviyo (https://jobs.trythestack.co/companies/klaviyo)
- **Location:** Ireland
- **Work arrangement:** On-site
- **Employment type:** Full-time
- **Experience level:** 10+ years
- **Visa sponsorship:** Offered, according to the listing
- **Key skills:** Python, Golang, AWS, Kubernetes, Terraform, Distributed Systems, Cloud-Native Security, Infrastructure As Code, System Design, SDLC Security, IAM, Networking, Monitoring, Incident Response, Technical Leadership, Mentoring
- **Posted by employer:** 2026-07-06
- **Added to The Stack:** 2026-07-07
- **Status:** May no longer be active (posted more than 60 days ago)
- **Apply:** https://www.klaviyo.com/careers/jobs/7734677003?gh_jid=7734677003 (the employer's own application page)
- **Human page:** https://jobs.trythestack.co/jobs/lead-software-engineer-infrastructure-security-klaviyo

## About the role

Responsibilities:
- Define the technical vision and long-term strategy for infrastructure security across the SDLC and platform.
- Design, build and operate cloud-native security services and automation used by engineering teams.
- Own components end-to-end (implementation, production operation, monitoring, incident response).
- Improve availability, scalability, latency and efficiency of security systems and tooling.
- Collaborate with product, platform and security stakeholders on architecture and risk mitigation.
- Mentor senior and mid-level engineers, lead design and code reviews, and contribute to security culture.
- Participate in on-call rotation and drive operational improvements to reduce toil.

Requirements:
- 8+ years building and operating cloud-native distributed systems in production.
- Strong programming experience in Python or Go; comfortable writing production-quality code.
- Hands-on experience with AWS, Kubernetes, Terraform and modern data stores.
- Solid understanding of secure system design, IAM, network security and SDLC-integrated security patterns.
- Experience with observability, incident response and performance troubleshooting.
- Proven technical leadership, mentoring ability and clear communication skills.

## Responsibilities

Set the technical vision and long-term strategy for security integrated into the SDLC and product infrastructure. Lead the design, implementation, and operation of cloud-native security services to improve scalability and reliability across the organization.

## Requirements

Requires 8+ years of experience building cloud-native distributed systems with proficiency in Python or Go and AWS. Candidates must have hands-on experience with Kubernetes, Terraform, and secure system design.

## FAQ

- **Is this Lead Software Engineer, Infrastructure Security role still open?** It was posted on 2026-07-06. Listings more than 30 days old may no longer be active, so check Klaviyo's site before applying.
- **Does Klaviyo offer visa sponsorship?** This listing is marked as offering visa sponsorship. Eligibility rules are set by the employer, so check the details on Klaviyo's site.
- **Where is this role located?** The listing gives the location as Ireland. It is marked on-site.
- **What skills does this role ask for?** The listing names: Python, Golang, AWS, Kubernetes, Terraform, Distributed Systems, Cloud-Native Security, Infrastructure As Code, System Design, SDLC Security, IAM, Networking, Monitoring, Incident Response, Technical Leadership, Mentoring.

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## About The Stack

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## Notes for agents

- Apply on the employer's page (https://www.klaviyo.com/careers/jobs/7734677003?gh_jid=7734677003). The Stack does not take applications.
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- Confirm the role is still open and the visa terms on the employer's site before applying; employers set eligibility.
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