Senior AI Platform Engineer jobs in United States
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Klaviyo · 1 day ago

Senior AI Platform Engineer

positionBoston, MA
timeFull-time
remoteHybrid
senioritySenior Level
money$152K/yr - $228K/yr
date5+ years exp

Klaviyo is a company that empowers creators to own their own destiny by making first-party data accessible and actionable. The Senior AI Platform Engineer will play a key role in designing and scaling backend systems that power AI products and agent solutions, collaborating closely with product managers, ML engineers, and data scientists to deliver impactful solutions.

AdvertisingAnalyticsE-CommerceMarketing AutomationSoftware
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Comp. & Benefits
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H1B Sponsor Likelynote

Responsibilities

Design and build backend systems to scale AI solutions for 167K+ customers
Contribute to our agentic architecture to support performant AI agents
Build tools to tune LLM-based features, deploy agents, MCP and RAG in production, and evaluate performance using tools like Arize, OpenAI, Bedrock, LangChain, vLLM and Ray
Develop reliable, scalable data pipelines and APIs for AI systems
Foster a culture of ownership, experimentation, and customer-first thinking

Qualification

Backend software engineeringDistributed systemsGenerative AI applicationsPythonData pipelinesBig data toolsCloud infrastructureML frameworksCuriosityProactivityEager to learnCollaboration

Required

5+ years of experience as a backend software engineer, building scalable, distributed systems
Strong experience working in production environments and launching ML/AI projects
Hands-on experience with generative AI and agentic AI applications in production
Proficient in Python (or similar)
Comfortable collaborating with cross-functional technical partners
Curious, proactive, and eager to learn

Preferred

Experience with big data tools (e.g., Apache Spark, Ray)
Familiarity with cloud infrastructure (AWS, Terraform, Kubernetes)
Knowledge of ML frameworks (Huggingface, PyTorch, TensorFlow, Keras)

Benefits

Participation in the company’s annual cash bonus plan
Variable compensation (OTE) for sales and customer success roles
Equity
Sign-on payments
A comprehensive range of health, welfare, and wellbeing benefits based on eligibility

Company

Klaviyo

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Klaviyo is an automation and email platform designed to help grow businesses.
dateFounded in 2012
location
Boston, Massachusetts, USA
people-size1001-5000 employees
web-link
http://www.klaviyo.com

H1B Sponsorship

Klaviyo has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (47)
2024 (29)
2023 (24)
2022 (27)
2021 (21)
2020 (8)

Funding

Current Stage
Public Company
Total Funding
$1.35B
Key Investors
ShopifySands Capital VenturesAccel
2025-08-13Post Ipo Secondary· $195.06M
2025-05-14Post Ipo Secondary· $372.95M
2023-09-20IPO

Leadership Team

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Andrew Bialecki
CEO
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Ed Hallen
Co-Founder, Chief Strategy Officer, Board Member
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Recent News

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BTIG Reveals its Best Stock Picks for H1 2026
2026-01-03
Boston Globe
Training a robot to replace you? Local startup Tutor Intelligence says it could happen.
2025-12-17
Boston Globe
Boston firm Klaviyo enters new growth stage as Andrew Bialecki brings on co-CEO
2025-12-16
Company data provided by crunchbase