Lead Software Engineer, Infrastructure Security at Klaviyo

✨ The Stack take on this Klaviyo job

• 🏢 Klaviyo has 19 jobs here, 11 with visa sponsorship see all
• 🛂 Visa: Critical Skills Employment Permit. Occupations on the Critical Skills list: €40,904 a year with a relevant degree guide
• 💡 No salary shown. Ask Klaviyo if it is above the minimum.

Updated 2026-11-05, from our data and official sources.

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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.

Key skills

• Python — in 1200 other listings on The Stack
• Golang — in 64 other listings on The Stack
• AWS — in 802 other listings on The Stack
• Kubernetes — in 585 other listings on The Stack
• Terraform — in 470 other listings on The Stack
• Distributed Systems — in 342 other listings on The Stack
• Cloud-Native Security — in 2 other listings on The Stack
• Infrastructure As Code — in 273 other listings on The Stack
• System Design
• SDLC Security
• IAM
• Networking
• Monitoring
• Incident Response
• Technical Leadership
• Mentoring

On The Stack (as of 2026-11-05)

• Klaviyo has 18 other listings on The Stack, 10 of them marked as offering visa sponsorship.
• 37 visa-sponsored jobs in Ireland on The Stack, posted in the last 60 days.
• 195 visa-sponsored software engineer jobs in Europe on The Stack, posted in the last 60 days.

Frequently asked questions about Klaviyo

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.