Senior Software Engineer, Infrastructure Security at Klaviyo
May no longer be active — verify on the employer site
At a glance
- Company
- Klaviyo
- Location
- Dublin, IE, Ireland
- Work arrangement
- On-site
- Employment type
- Full-time
- Experience
- 5–10 years
- Working hours
- 40 hours
- Visa sponsorship
- Offered, according to the listing
- Posted
- Added to The Stack
✨ 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:
- Ship foundational infrastructure security services that enable engineers to build securely and quickly.
- Design and deliver highly available, scalable systems; identify and eliminate bottlenecks to increase throughput and efficiency.
- Prototype and advocate architectural improvements that reduce latency and operational cost.
- Champion best practices (defensive programming, config-as-code, application security) and lead design/code reviews.
- Mentor and pair with engineers to improve performance, self-healing behavior and security posture.
- Participate in on-call duties focused on prevention, recurrence elimination and reducing alert fatigue.
Requirements:
- Strong hands-on experience with Linux, networking and cloud infrastructure in high-scale production environments.
- Proficiency in Python, Go or similar and experience with AWS, Kubernetes, Terraform and related data stores (MySQL, Redis, ClickHouse, etc.).
- Deep understanding of infrastructure security concepts (IAM, secrets management, service mesh, zero-trust) and observability.
- Proven track record leading significant technical projects and mentoring peers across teams.
- Excellent communication, system-design and operational excellence skills.
Responsibilities
Design and ship foundational security services and internal platforms to enable secure, scalable, and highly available engineering workflows. Collaborate across teams to eliminate system bottlenecks and mentor other engineers on performance and defensive programming.
Requirements
Requires strong hands-on experience with Linux, computer networking, and cloud infrastructure in high-scale environments. Proficiency in languages like Python, Go, or Ruby and a track record of leading significant technical projects are essential.
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
- Linux — in 151 other listings on The Stack
- Computer Networking — in 1 other listing on The Stack
- Django — in 51 other listings on The Stack
- MySQL
- Redis
- Infrastructure Security
- System Design
- Application Security
- Backend Services
- Data Pipelines
- Cloud Infrastructure
On The Stack (as of 2026-11-05)
Frequently asked questions about Klaviyo
Is this Senior Software Engineer, Infrastructure Security role still open?
It was posted on 2026-06-17. 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 Dublin, IE, Ireland. It is marked on-site.
What skills does this role ask for?
The listing names: Python, Golang, AWS, Kubernetes, Terraform, Linux, Computer Networking, Django, MySQL, Redis, Infrastructure Security, System Design, Application Security, Backend Services, Data Pipelines, Cloud Infrastructure.