Senior IT Systems Engineer

Boston, MA

Posted$112K to $168Kfirst seen Sep 11, 2026updated Sep 11, 2026

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The posting, in Klaviyo's own words

archived Sep 11, 2026

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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 klaviyo.com/careers to see how we empower creators to own their own destiny. 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.

About the team:

Klaviyo’s global corporate Information Technology (IT) team is responsible for providing technology systems, administration, and support to Klaviyos around the world. Our main goal is to ensure that Klaviyos everywhere have a strong technology foundation to do great work. The IT Team solves problems using technology and provides Klaviyo’s continued scalability and sustainable employee growth in a rapidly evolving environment. The IT Systems team is primarily responsible for SaaS systems administration and end-to-end lifecycle management, building automation, and engineering solutions for both other internal teams and the business. The IT Systems team is highly collaborative, working closely with the IT Searchbar team, our end-user support team as well as with our Security, Risk, and Trust teams and the broader Engineering department.

Read the full posting ↓

About the role:

As a Senior IT Systems Engineer on the IT Systems team, you own the design, implementation, and long-term health of the enterprise systems Klaviyo runs on identity, endpoint management, and the SaaS platforms every Klaviyo touches. You will lead projects end to end, from SSO/SCIM rollouts to complex multi-tool integrations and automations, and you will be trusted to take an ambiguous business problem, define the problem statement yourself, and deliver a solution that scales. You will partner with operations, engineering, Security, and the IT Searchbar team, and act as a technical escalation point when systems break. Klaviyo is building an AI-first future, and IT is where a lot of that gets real. You will use AI fluently in your own work and help design AI-assisted workflows into the systems we run for the rest of the company. This is a senior individual contributor role: no direct reports, high autonomy, and real ownership. We are looking for someone who has already run systems at scale, holds opinions grounded in experience, and can be handed a domain and trusted to run it.

Requirements:

4+ years of hands-on experience as a systems engineer or systems administrator, with a track record of owning enterprise systems in production not just operating them, but deciding how they should work. You define problem statements yourself. You can take a vague or contested business need, scope it, drive alignment with stakeholders, and deliver with minimal direction without losing the thread when priorities shift. Deep working knowledge across a wide range of IT systems, including enterprise device management, identity and access management, and endpoint security. You have deployed and managed macOS and iOS devices at scale through an MDM (Jamf preferred), including configuration profiles, policies, and OS update strategy. Windows management (Intune, Autopilot) is a strong plus. You have administered core SaaS platforms such as Google Workspace, Slack, Atlassian, and Zoom, including their security and admin controls. Hands-on experience with IdP configuration, management, and maintenance: SSO (SAML/OIDC), SCIM provisioning, group and role design, and app onboarding. Experience with Okta or Entra ID (Azure AD) is preferred. You have owned the identity lifecycle in practice onboarding, role changes, and offboarding and understand the security and audit consequences of getting it wrong. AI proficiency: AI is already part of how you work, and you can show it. You use LLM assistants and agents to research, write and debug code, draft documentation, and compress routine work, and you exercise judgment about when to trust the output. You are actively interested in putting AI into the systems you run automating triage, enrichment, and repetitive workflows for the wider company. You automate by default, and you have the scripting skills to do it: Bash, PowerShell, or Python. Python is preferred and AWS Lambda experience is a plus. You have replaced manual, repetitive work with automation other people now rely on, and you can safely read and modify someone else’s script. Comfortable working with APIs REST, JSON, authentication, and rate limits and building integrations between systems that do not natively talk to each other. You value clean, concise controls and easily editable security functionality within tools, and you can produce evidence for access reviews and audits (SOC 2, SOX) without it derailing your week. Disciplined change management: you test, get peer review, plan rollback, communicate to affected users, and document what changed including under pressure. You can debug a system problem you have never seen before, drive it to the root cause, and communicate clearly to non-technical stakeholders while it is still unresolved. You can evaluate vendors and tools on their merits: security posture, integration surface, total cost and make a defensible recommendation. Strong written communication. Your documentation, runbooks, and change notices are good enough that other people can act on them without asking you. Participation in an after-hours on-call rotation with the IT Systems team is required for site-specific or business-blocking issues.

Base Pay Range For US Locations:

$112,000 — $168,000 USD This role may require up to 10% travel for purposes such as new hire onboarding, client or partner work if applicable, team meetings, and industry events. Travel is coordinated in advance. Get to Know Klaviyo We’re Klaviyo (pronounced clay-vee-oh). We empower creators to own their destiny by making first-party data accessible and actionable like never before. We see limitless potential for the technology we’re developing to nurture personalized experiences in ecommerce and beyond. To reach our goals, we need our own crew of remarkable creators—ambitious and collaborative teammates who stay focused on our north star: delighting our customers. If you’re ready to do the best work of your career, where you’ll be welcomed as your whole self from day one and supported with generous benefits, we hope you’ll join us. AI fluency at Klaviyo includes responsible use of AI (including privacy, security, bias awareness, and human-in-the-loop). We provide accommodations as needed. By participating in Klaviyo’s interview process, you acknowledge that you have read, understood, and will adhere to our Guidelines for using AI in the Klaviyo interview Process . For more information about how we process your personal data, see our Job Applicant Privacy Notice . Klaviyo is committed to a policy of equal opportunity and non-discrimination. We do not discriminate on the basis of race, ethnicity, citizenship, national origin, color, religion or religious creed, age, sex (including pregnancy), gender identity, sexual orientation, physical or mental disability, veteran or active military status, marital status, criminal record, genetics, retaliation, sexual harassment or any other characteristic protected by applicable law. IMPORTANT NOTICE: Our company takes the security and privacy of job applicants very seriously. We will never ask for payment, bank details, or personal financial information as part of the application process. All our legitimate job postings can be found on our official career site. Please be cautious of job offers that come from non-company email addresses (@klaviyo.com), instant messaging platforms, or unsolicited calls. By clicking "Submit Application" you consent to Klaviyo processing your Personal Data in accordance with our Job Applicant Privacy Notice. If you do not wish for Klaviyo to process your Personal Data, please do not submit an application. You can find our Job Applicant Privacy Notice here and here (FR).

Senior IT Systems Engineer

The posting, in Klaviyo's own words

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