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Klaviyo
Klaviyo

60 Klaviyo Security Jobs Hiring Near You

Klaviyo

Senior AI Application Engineer

Boston, MA · On-site

Ensure AI integrations follow data privacy best practices, implement guardrails for sensitive data handling, and maintain compliance with Klaviyo security and governance standards. Qualifications

Klaviyo

Senior AI Engineer

Boston, MA · On-site

$113K - $155K/yr

Ensure AI integrations follow data privacy best practices, implement guardrails for sensitive data handling, and maintain compliance with Klaviyo security and governance standards. Qualifications

Klaviyo

Principal Engineer, Security

Boston, MA · On-site

At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ... The Principal Engineer, Security is a hands-on IC who owns Klaviyo's infrastructure security ...

Klaviyo

Principal Engineer, Security

Boston, MA · On-site

At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ... The Principal Engineer, Security is a hands-on IC who owns Klaviyo's infrastructure security ...

Klaviyo

Principal Engineer, Security

Boston, MA · On-site

Klaviyo's platform sends billions of messages and processes petabytes of customer data for hundreds ... The Principal Engineer, Security is a hands-on IC who owns Klaviyo's infrastructure security ...

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Klaviyo Jobs Information

What is it like to work at Klaviyo?

Klaviyo is a company that prioritizes innovation and customer-centricity, fostering a culture of experimentation and collaboration among its employees. The company's structure is designed to encourage cross-functional teamwork, with a flat organizational hierarchy and open communication channels, allowing employees to work closely with various departments and contribute to the development of email marketing and e-commerce solutions. Working at Klaviyo may appeal to candidates who are passionate about technology and customer experience, as the company offers opportunities for professional growth, flexible work arrangements, and a dynamic work environment that supports creativity and innovation.

What makes Klaviyo an attractive place to work?

Klaviyo is a leading marketing automation platform that has established itself as a prominent player in the e-commerce industry, helping businesses of all sizes to build strong customer relationships and drive revenue growth.

The company's workplace culture is characterized by a fast-paced and innovative environment, where employees are encouraged to collaborate and share ideas to drive product development and customer success. Klaviyo also prioritizes employee growth and development, offering opportunities for professional advancement and skill-building through training programs and mentorship.

Joining Klaviyo can be an attractive option for those seeking a challenging and dynamic work environment where they can make a meaningful impact on the company's mission to help businesses succeed in a rapidly changing market.

What are the most popular job types at Klaviyo?

    What are the most popular jobs at Klaviyo?

    What are the most popular categories at Klaviyo?

    Infographic showing various Security job openings at Klaviyo in the United States as of August 2026, with employment types broken down into 99% Full Time, and 1% Contract. Highlights an 85% Physical, 14% Hybrid, and 1% Remote job distribution.

    Senior AI Application Engineer

    Klaviyo

    Boston, MA • On-site

    Full-time

    Re-posted 22 days ago

    Job description

    Job Summary:
    Klaviyo is a company that empowers creators by making first-party data accessible and actionable. They are seeking a Senior AI Application Engineer to design, build, and scale production-grade LLM integrations and AI-powered automation tools, focusing on applied AI research and full-stack software engineering.
    Responsibilities:
    • Design and build LLM-powered applications: Architect and develop production-grade systems leveraging large language models (GPT-4, Claude, Mistral, Llama) for internal automation, knowledge retrieval, and intelligent workflow assistance.
    • Build and maintain AI integration pipelines: Design robust, scalable API integrations between AI models and internal systems such as HRIS, ticketing, CRM, and knowledge bases, ensuring reliability, low latency, and high availability.
    • Develop full-stack AI features end-to-end: Own the complete development of AI features across the stack from backend model orchestration and API layers to frontend interfaces that make AI accessible to non-technical employees.
    • Architect and manage CI/CD pipelines for AI systems: Build and maintain automated deployment pipelines for AI models and services, including model evaluation frameworks, A/B testing infrastructure, and safe rollout strategies.
    • Implement RAG and retrieval systems: Design and build retrieval-augmented generation systems grounded in Klaviyo internal knowledge, ensuring accuracy, relevance, and up-to-date responses at scale.
    • Evaluate and fine-tune AI models: Lead benchmarking, evaluation, and fine-tuning of foundation models for Klaviyo use cases, including prompt engineering and parameter-efficient fine-tuning techniques.
    • Establish AI engineering best practices: Define coding standards, testing frameworks, and architectural patterns for AI development at Klaviyo, enabling the team to ship reliable AI features consistently.
    • Build AI observability and monitoring tooling: Instrument AI systems with latency monitoring, output quality evaluation, hallucination detection, cost dashboards, and production alerting.
    • Collaborate with Product and Data Science: Work closely with PMs, data scientists, and ML engineers to translate requirements into technical implementations, maintaining a tight feedback loop between experimentation and production.
    • Drive security and compliance in AI systems: Ensure AI integrations follow data privacy best practices, implement guardrails for sensitive data handling, and maintain compliance with Klaviyo security and governance standards.
    Qualifications:
    Required:
    • 3+ years of software engineering experience, with at least 2 years focused on building AI, ML, or LLM-powered systems in production.
    • Deep expertise with large language models such as OpenAI, Anthropic, Mistral, or Llama, and experience integrating them into production applications via API.
    • Strong full-stack engineering skills across Python (FastAPI, Flask, or Django) and TypeScript or JavaScript, with experience in modern frontend frameworks.
    • Proven experience designing and building CI/CD pipelines for software or ML systems using tools such as GitHub Actions, Jenkins, or CircleCI.
    • Experience with RAG systems, vector databases (Pinecone, Weaviate, pgvector), and embedding models.
    • Proficiency with cloud infrastructure (AWS, GCP, or Azure), containerization (Docker, Kubernetes), and infrastructure-as-code tools such as Terraform or Pulumi.
    • Experience with prompt engineering, model evaluation frameworks, and LLM observability tools such as LangSmith or Weights and Biases.
    Company:
    Klaviyo is an automation and email platform designed to help grow businesses. Founded in 2012, the company is headquartered in Boston, USA, with a team of 1001-5000 employees. The company is currently Late Stage.

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