Software Engineer II, Infrastructure Security

<div class="content-intro"><p><em>At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you’re a close but not exact match with the description, we hope you’ll still consider applying. Want to learn more about life at Klaviyo? Visit <a class="_ymio1r31 _ypr0glyw _zcxs1o36 _mizu194a _1ah3dkaa _ra3xnqa1 _128mdkaa _1cvmnqa1 _4davt94y _4bfu18uv _1hms8stv _ajmmnqa1 _vchhusvi _kqswh2mm _ect4ttxp _syaz13af _1a3b18uv _4fpr8stv _5goinqa1 _f8pj13af _9oik18uv _1bnxglyw _jf4cnqa1 _30l313af _1nrm18uv _c2waglyw _1iohnqa1 _9h8h12zz _10531ra0 _1ien1ra0 _n0fx1ra0 _1vhv17z1" href="http://klaviyo.com/careers" data-renderer-mark="true">klaviyo.com/careers</a> to see how we empower creators to own their own destiny.</em></p></div><h3><strong>Team Overview</strong></h3> <p>The Infrastructure Security team makes it simple and easy for engineers to make secure choices while developing world-class software at high speed. Security is built in by default—seamless and effortless—making engineers’ lives better and Klaviyo more secure.</p> <p>Our work sits at the intersection of security, infrastructure, and software engineering. We build cloud-native platforms and services that are reliable, secure, and performant at global scale, forming the foundation that Klaviyo engineers rely on every day.</p> <p>This role is for engineers who enjoy building modern distributed systems, care about security and reliability, and want to have real impact across a large engineering organization.</p> <h3><strong>How you’ll make an impact</strong></h3> <p>As a Software Engineer on the Infrastructure Security team, you will build and operate the systems that help Klaviyo engineers ship secure software with confidence. You will:</p> <ul> <li>Design, build, and maintain cloud-native security services used across Klaviyo</li> <li>Own meaningful components and services end to end, from implementation through production operation</li> <li>Improve the availability, scalability, latency, and efficiency of infrastructure security systems</li> <li>Collaborate with senior engineers on system design and architecture, contributing ideas and technical solutions</li> <li>Identify performance, reliability, and security issues in distributed systems and drive improvements</li> <li>Work extensively with technologies such as Python, Golang, AWS, Kubernetes, Terraform, and modern data stores</li> <li>Participate actively in design reviews, code reviews, and whiteboarding sessions</li> <li>Contribute to operational excellence through monitoring, alerting, and incident response</li> <li>Participate in an on-call rotation with a focus on learning, prevention, and reducing operational toil</li> <li>Build tooling, automation, and documentation that improve developer experience and security posture</li> <li>Partner with product-facing and platform engineers to ship impactful, secure solutions</li> </ul> <h3><strong>Who you are</strong></h3> <ul> <li>You have solid experience building and operating <strong>cloud-native, distributed systems</strong> in production</li> <li>You are comfortable writing production-quality code in a language such as <strong>Python or Go</strong></li> <li>You have hands-on experience with <strong>AWS (or a similar cloud provider)</strong> and understand managed services, networking, and IAM concepts</li> <li>You have experience working with <strong>containers and orchestration platforms</strong> such as Kubernetes</li> <li>You are comfortable owning services and features independently, while knowing when to ask for feedback or support</li> <li>You understand the fundamentals of scalable, multi-tenant architectures and secure system design</li> <li>You care about reliability, performance, observability, and security—not just sh ... (truncated, view full listing at source)