Full-Time

Senior IT Systems Engineer

IT Systems

Posted on 9/11/2026

Klaviyo

Klaviyo

1,001-5,000 employees

E-commerce marketing automation & data platform

Compensation Overview

$112k - $168k/yr

+ Annual cash bonus + Equity + Sign-on payments

Boston, MA, USA

In Person

Up to 10% travel may be required, coordinated in advance.

Category
IT Operations (1)
Required Skills
LLM
PowerShell
Bash
Microsoft Azure
Python
Atlassian
Microsoft Windows
Microsoft Intune
Computer Networking
SOC 2
SAML
AWS
n8n
iOS/Swift
Terraform
Ansible
REST APIs
Google Workspace
ACLS
Google Cloud Platform

Get referred to Klaviyo

See people who can refer or advise you

Requirements
  • 4+ years of hands-on experience as a systems engineer or systems administrator, with a track record of owning enterprise systems in production.
  • Ability to define problem statements, scope ambiguous business needs, drive stakeholder alignment, and deliver with minimal direction.
  • Deep working knowledge of enterprise device management, identity and access management, and endpoint security.
  • Experience deploying and managing macOS and iOS devices at scale through a mobile device management platform, including configuration profiles, policies, and operating-system update strategy.
  • Experience administering core SaaS platforms such as Google Workspace, Slack, Atlassian, and Zoom, including security and administrative controls.
  • Hands-on experience configuring, managing, and maintaining identity providers, including SSO using SAML or OIDC, SCIM provisioning, group and role design, and application onboarding.
  • Experience owning the identity lifecycle across onboarding, role changes, and offboarding, with an understanding of the security and audit consequences.
  • Proficiency with artificial intelligence tools, including large language model assistants and agents for research, code writing and debugging, documentation, and routine-work automation, with sound judgment about their output.
  • Scripting skills in Bash, PowerShell, or Python, including the ability to safely read and modify existing scripts and replace repetitive manual work with automation.
  • Comfort working with REST APIs, JSON, authentication, and rate limits, and building integrations between systems.
  • Ability to implement concise, editable security controls and produce evidence for access reviews and SOC 2 and SOX audits.
  • Disciplined change-management practices, including testing, peer review, rollback planning, communication to affected users, and documentation.
  • Ability to debug unfamiliar system problems to root cause and communicate clearly with non-technical stakeholders during unresolved incidents.
  • Ability to evaluate vendors and tools based on security posture, integration surface, total cost, and defensible recommendations.
  • Strong written communication sufficient to create documentation, runbooks, and change notices that others can act on independently.
  • Participation in an after-hours on-call rotation for site-specific or business-blocking issues is required.
Responsibilities
  • Own the reliability, security, and roadmap of identity systems, endpoint systems, or core SaaS platforms.
  • Lead projects end to end by scoping work, designing solutions, planning rollouts and rollbacks, communicating changes, and completing testing, peer review, and documentation.
  • Translate ambiguous business needs into clear problem statements and scalable systems.
  • Set technical standards for clean configuration, least-privilege access, automation, and operational runbooks.
  • Define success metrics and validate results using data such as tickets deflected, provisioning time saved, coverage, and compliance gaps closed.
  • Review others’ work, mentor engineers earlier in their careers, and exchange direct, useful feedback.
  • Serve as a technical escalation point for complex system issues, drive root-cause resolution, and improve the platform to prevent recurrence.
Desired Qualifications
  • Experience with Workato, Okta Workflows, n8n, or similar SSO and automation solutions, including building a non-trivial solution.
  • Experience with enterprise-scale networking, including routing, DNS, DHCP, VPN, and building and maintaining multiple global office networks.
  • Experience as a systems administrator or systems engineer in a fast-paced, high-growth IT environment supporting a globally distributed workforce.
  • Experience building AI systems beyond chat prompts and context engineering, connecting large language models to systems through APIs or MCP, or running an AI-assisted workflow or agent in production.
  • Experience with VPC, EC2, security groups, ACLs, and IAM in AWS and GCP.
  • Experience with infrastructure as code using Terraform or Ansible, or version-controlled configuration management for IT systems.
  • Experience administering an ITSM platform such as Freshservice or Jira Service Management, including forms, workflows, SLAs, and reporting.
  • Relevant certifications such as Jamf 200/300, Okta Certified Professional or Administrator, or associate-level AWS, Azure, or Google Cloud certifications.
  • Experience with Windows management using Intune or Autopilot.
  • Experience with Okta or Entra ID (Azure AD).
  • Experience with AWS Lambda.
  • Proficiency with Python.

Klaviyo provides marketing automation and customer data management for e-commerce brands. It collects and stores data from online stores and apps, analyzes customer behavior, and uses that information to power personalized campaigns across email, SMS, and on-site/product recommendations. The product works by building audiences from stored data, then triggering automated messages and experiences based on customer actions (for example, welcome emails, cart reminders, and targeted product suggestions). What sets Klaviyo apart is its tight integration with e-commerce tools, its tiered subscription model based on contact count, and its partner programs that connect clients with experienced agencies to help maximize the platform’s potential. The company’s goal is to help e-commerce businesses strengthen customer relationships and grow revenue by using data-driven marketing and automation to engage shoppers at the right moment with the right message.

Company Size

1,001-5,000

Company Stage

IPO

Headquarters

Boston, Massachusetts

Founded

2012

Get referred to Klaviyo

See people who can refer or advise you

Simplify Jobs

Simplify's Take

What believers are saying

  • Q2 2026 revenue rose 26% to $370.6 million; guidance reached $1.534 billion.
  • Klaviyo opened Singapore HQ in August 2026, targeting Asia Pacific growth.
  • Composer reached public beta in June 2026 and drew 95,000 users immediately.

What critics are saying

  • Omnisend, Brevo, Mailchimp, and Shopify Email compress Klaviyo's pricing power in 2026.
  • CFO Amanda Whalen exits August 21, 2026, while Agency acquisition costs hit margins.
  • If Shopify owns merchant messaging, Klaviyo's e-commerce moat shrinks into a feature.

What makes Klaviyo unique

  • Klaviyo's June 2026 Composer and Customer Agent share one live customer profile.
  • Its March 2026 Shopify Markets integration localizes catalogs, pricing, and URLs natively.
  • Klaviyo reports 350-plus integrations, anchoring deep commerce data across channels.

Help us improve and share your feedback! Did you find this helpful?

Benefits

Health Insurance

Dental Insurance

Vision Insurance

Health Savings Account/Flexible Spending Account

401(k) Company Match

Paid Holidays

Professional Development Budget

Growth & Insights and Company News

Headcount

6 month growth

-1%

1 year growth

-1%

2 year growth

0%
Retail Technology Innovation Hub
Sep 1st, 2026
Former AllSaints and Liberty exec James Moore swaps fashion for football with Manchester United move.

Former AllSaints and Liberty exec James Moore swaps fashion for football with Manchester United move. James Moore has been appointed Interim Head of E-commerce at English football giant Manchester United. He joins from fashion retailer END. and his CV also includes stints at AllSaints and Liberty. Fashion retailer AllSaints has launched a new customer engagement platform in partnership with Klaviyo. In a LinkedIn post, Alfie Meekings, Chief Transformation and Technology Officer at AllSaints and John Varvatos, said: "One of our core values at AllSaints is 'the customer is the boss' and so naturally one of our key transformation pillars is deeply focused on how we bring even more amazing experiences to our customers." He added: "This year, the focus is on how we empower our amazing global teams to be able to drive more personalised content and build genuine connection with people that want to connect with our brand. I'm pleased to share that last week we went live with a new customer engagement platform with Klaviyo to help us do exactly that. We'll be able to offer content that is far more personalised at a global scale, open new channels and ways to connect with our customers and make sure that the engine that sits behind it all is optimised with AI." "Getting this done so quickly and smoothly was a big cross-functional effort. This is also a significant project as it's the first that's been delivered by our new engineering team at our GCC in India led by Vijay Venugopal. Also a big thank you for the amazing partnership from team Klaviyo." 2026 RTIH Innovation Awards The awards are now open for entries and celebrate global retail technology innovation in a fast moving omnichannel world. Its winners will be revealed at the 2026 RTIH Innovation Awards Ceremony, taking place at The HAC in Central London on Wednesday, 4th November. Its 2025 hall of fame entrants were revealed during a sold out event which took place at The HAC on 16th October and consisted of a drinks reception, three course meal, and awards ceremony presided over by award winning comedian, actress and writer Tiff Stevenson. In his welcome speech, Scott Thompson, Founder and Editor, RTIH, said: "This is the awards' fifth year as a physical event. We started off with just 30 people at the South Place Hotel not far from here, then moved to London Bridge Hotel, then The Barbican, and last year RIBA's HQ in the West End." "But I'm conscious of the fact that, to quote the legend that is Taylor Swift, You're only as hot as your last hit, baby. So, this year we've moved to our biggest venue yet, and also pulled in our largest number of entries to date and broken attendance records." He added: "This year's submissions have without doubt been our best yet. To quote one of the judges: The examples of innovative developments across both traditional and digital retail spaces were truly remarkable." Congratulations to its winners, and a big thank you to its sponsors, judging panel, the legend that is Tiff Stevenson, and all those who attended its 2025 gathering.

The Healthcare Technology Report
Aug 31st, 2026
WHOOP taps former Klaviyo finance chief Yann Gellot as CAO.

WHOOP taps former Klaviyo finance chief Yann Gellot as CAO. Published. August 31, 2026 WHOOP has named Yann Gellot Chief Accounting Officer, bringing in a finance executive with 30 years of experience across technology companies and public accounting. Gellot will oversee global accounting, financial reporting, tax, governance, and internal controls as WHOOP continues expanding internationally. Gellot most recently served as chief accounting officer and senior vice president of finance at Klaviyo. He previously held senior finance roles at CarGurus, Dassault Systèmes, Harvest Power, and PricewaterhouseCoopers. A Certified Public Accountant, Gellot helped lead Klaviyo through its initial public offering and played a senior role in preparing CarGurus to go public. WHOOP Founder and CEO Will Ahmed said Gellot's experience building finance organizations during periods of rapid growth will support the company's longer-term expansion. The appointment gives WHOOP a senior executive experienced in developing the reporting, governance, internal-control, and financial systems required by larger global businesses. Gellot also has a personal connection to WHOOP's focus on health and performance. "As an endurance athlete, I've experienced firsthand the value of continuous health and performance data," he said. Gellot has completed seven Ironman triathlons and is training for a 100-mile endurance race using WHOOP to monitor his sleep, recovery, and training.

Cartly
Aug 25th, 2026
Sync your marketing apps and bring your reviews onto your store.

Sync your marketing apps and bring your reviews onto your store. Cartly now connects with the email and SMS marketing tools you already use - Klaviyo, Mailchimp, Brevo, Omnisend, and Bird - and imports your Judge.me product reviews straight onto your storefront. Cartly Team Engineering & Product marketing · reviews · integrations You've asked to keep using the marketing tools you already know - and to bring the reviews you've already earned onto your Cartly storefront. This release does both. Plug in your email & SMS marketing platform. Cartly now integrates directly with five of the most popular marketing platforms: Klaviyo, Mailchimp, Brevo, Omnisend, and Bird (formerly MessageBird). Install one from the App Store, connect it, and Cartly keeps it in sync automatically: * Customers & subscribers - new customers and newsletter sign-ups flow into the audience or list you choose, with no CSV exports. * Order events - paid orders are sent to your platform so you can trigger flows and automations: post-purchase follow-ups, win-back and abandoned-cart campaigns, all on real store data. Setup takes a minute: open the App Store, install your marketing app, paste your API key (or click Connect), pick the list or audience to sync to, and you're live. Showcase your product reviews with Judge.me. Already collecting reviews with Judge.me? Connect your account and Cartly imports your existing product reviews - star ratings, photos, and verified-buyer badges - straight onto your storefront, matched to the right products automatically. Reviews re-sync on a schedule, so new and updated reviews keep appearing without any manual work. Getting started. Everything lives in the App Store in your admin. Browse the Marketing category, install the app you want, and follow the connect steps. Need a hand? See Connecting an email or SMS marketing app and Importing your product reviews from Judge.me.

Tryvio
Aug 15th, 2026
Tryvio x Klaviyo integration | personalised try-on follow-up for Shopify.

Tryvio x Klaviyo integration | personalised try-on follow-up for Shopify. A shopper visits your product page. They use virtual try-on. They see themselves wearing the product. They spend time comparing, considering, and imagining it in their own wardrobe. Then they leave without buying. That does not mean the interest was not real. Often, it means the moment needed a little more time - or a relevant reason to come back. Until now, that try-on moment could disappear as soon as the shopper left your store. Today, Tryvio is changing that. Tryvio x Klaviyo is live. Tryvio now integrates with Klaviyo, helping Shopify fashion brands turn try-on engagement into personalised email follow-up. When a shopper tries on a product with Tryvio but does not purchase, you can use that event to trigger a Klaviyo flow. The follow-up can include the shopper's actual Tryvio image - showing them wearing the product they were considering. Not a generic product reminder. Not another standard abandoned-cart email. Their product. On them. The result is a more relevant way to re-engage shoppers after they leave your store. The try-on should not be the end of the journey. Virtual try-on creates a high-intent moment. A shopper has taken an extra step beyond viewing product photography: they have chosen to see the product in their own context. That signal matters. But product-page engagement alone does not always lead to an immediate purchase. Shoppers may get distracted, compare options, wait for a payday, ask someone else for an opinion, or simply need more time to decide. The Tryvio x Klaviyo integration gives brands a way to continue that conversation. Instead of restarting with a broad promotion or a generic reminder, you can bring the shopper back to the exact moment that made the product feel personal: seeing it on themselves. How the integration works. The workflow is simple: 1. A shopper tries on a product: They upload a photo and generate a Tryvio result directly on your Shopify product page. 2. They leave without purchasing: Their try-on engagement becomes a useful signal for your retention strategy. 3. Klaviyo follows up: Create a flow that sends a personalised email containing the shopper's Tryvio image and a clear route back to the product or checkout. You decide how and when that follow-up happens. There is no fixed delay. Your team can choose the timing, flow logic, messaging, audience rules, and any incentives based on your brand, category, and existing lifecycle strategy. Why a personal try-on image changes the follow-up. Most abandoned-cart and browse-abandonment emails start from the same place: a product someone viewed. That is useful - but it is not always memorable. A try-on image has more context. It reminds the shopper not only of the product, but of the moment they saw how it could look on them. For visual categories such as jewelry, eyewear, watches, apparel, footwear, and accessories, that difference matters. The message moves from "Here is the item you looked at" to "Here is how it looked on you." That makes the follow-up feel closer to the customer's actual shopping experience. Build the flow around your brand, not a fixed template. Every fashion brand has a different buying cycle. A lower-priced accessory may need a short reminder. A considered purchase, such as a watch or premium piece of jewelry, may benefit from a longer sequence with more education or social proof. With Tryvio x Klaviyo, you can build the workflow that fits your store. For example, you could: * Send a simple reminder after a shopper tries on but does not buy. * Follow up with a personal try-on image and a link back to the exact product. * Add customer reviews, styling ideas, or product details in a later message. * Introduce a time-sensitive offer only after the shopper has had time to consider. * Create different flows by category, product price, customer segment, or engagement level. * Exclude customers who have already purchased, so the experience stays relevant. The integration is not designed to replace your lifecycle strategy. It gives your Klaviyo flows a richer, more personal engagement signal to work with. From product-page confidence to retention. Tryvio is built around one simple idea: fashion shoppers buy more confidently when they can see products on themselves. The Klaviyo integration extends that confidence beyond the product page. A shopper may not be ready to purchase in the first session. But if they have already taken the time to try something on, there is a meaningful opportunity to re-engage them with an experience that reflects what they actually did - not just what they clicked. That is where virtual try-on becomes more than a visual feature. It becomes a part of your conversion and retention engine. Get started with Tryvio x Klaviyo. The Tryvio x Klaviyo integration is now available for Shopify fashion brands using Tryvio. If your customers need to see a product on themselves before they buy, Tryvio helps you create more confident product-page experiences - and now, more relevant follow-up after they leave. Or, if you would like help mapping the integration to your existing Klaviyo flows, book a demo with its team. Iliyan Stefanov Co-Founder, Tryvio See it on your own products Tryvio adds AI virtual try-on to your Shopify product pages - installed in minutes, measured on your dashboard.

Tech Coffee House
Aug 13th, 2026
Klaviyo opens Singapore HQ as AI reshapes shopping.

Klaviyo opens Singapore HQ as AI reshapes shopping. techcoffeehouse Klaviyo, the autonomous B2C customer relationship management (CRM) platform, has opened its Asia headquarters in Singapore, supported by the Singapore Economic Development Board (EDB) in what the company calls its most significant regional commitment to date. The Singapore office opens with more than 25 staff as part of a 150-strong Asia Pacific team built with local leadership and infrastructure from day one. Klaviyo now serves more than 115,000 international customers, with APAC revenue growing at a double-digit rate, building on 35 per cent year-on-year revenue growth outside the Americas in the second quarter of 2026, part of a global revenue run rate of nearly US$1.5 billion. Singapore shoppers are already embracing AI. New Klaviyo research conducted with more than 1,000 Singapore shoppers found that 76 per cent have used AI to help find or decide on a purchase in the past three months, and 51 per cent are open to AI agents making routine repurchases on their behalf. The same research found 58 per cent of shoppers would share more personal data in return for more relevant recommendations, while nearly half said what they want most is for brands to stop sending irrelevant messages and treat them as loyal customers rather than transactions. Brian Kealey, Klaviyo's APAC Managing Director, and Eric Fearday, Klaviyo's Chief Revenue Officer, officiated the office opening, joined by Clare Lee, Vice President of Global Enterprises Division at the EDB. "Singapore was a natural choice for our regional headquarters as it offers deep access to a skilled talent pool, strong connectivity across the region, proximity to a fast-growing customer base, and a maturing AI ecosystem that aligns with Klaviyo's strategic focus," said Kealey. "We are scaling our footprint to meet this demand - hoping to expand our regional team to more than 175 employees by the end of the year." EDB backs Klaviyo's regional bet. "Through its Asia headquarters in Singapore, Klaviyo can leverage our robust digital infrastructure and consumer ecosystem to drive growth for brands serving Asia's increasingly savvy consumers," said Lee. "We welcome this investment that will create opportunities for our local talent, and look forward to partnering with Klaviyo as it builds its regional presence from Singapore." Klaviyo provides brands a real-time, lifetime view of every customer across every interaction, purchase and preference, fed by more than 350 native integrations, powering personalised and autonomous communications through email, WhatsApp and customer service. "The growth gap for brands in Asia is a data gap. Customers here move fast, expect personalisation, and have no patience for brands that treat them like a transaction," said Brian Kealey, APAC Managing Director, Klaviyo. Share with your friends: Loading...