Klaviyo

Software Engineer II on the Marketing Agent team at Klaviyo, responsible for building AI-powered systems that autonomously create and execute marketing strategies. The role focuses on backend development of robust and maintainable AI systems, directly impacting customer ROI and driving revenue.

Senior Software Engineer role focused on building the next generation of AI agents for marketing and customer experience automation. The role involves designing and implementing agentic systems that autonomously create, execute, and optimize marketing strategies for businesses, directly impacting customer ROI and driving revenue. It's a backend-focused role with a strong emphasis on robust AI systems, low latency, and high-quality outputs, with opportunities for mentorship and leadership.

Sr. Lead AI Engineer responsible for the technical leadership, architecture, and execution of high-impact AI services and agentic systems within the AI & Analytics organization. This role involves building and hardening AI serving systems, evolving agentic architecture, setting engineering standards, and mentoring other engineers. The focus is on hands-on technical leadership for production generative and agentic AI applications.

Lead AI Engineer responsible for designing, building, and scaling backend systems and agentic capabilities for Marketing and Service AI products. This role involves owning complex services end-to-end, contributing to architecture, and ensuring reliable, scalable production capabilities for generative and agentic AI solutions. The focus is on backend-heavy development, including async processing pipelines, distributed systems, AI serving, and evolving agentic architectures, with a strong emphasis on evaluation and best practices for AI systems.

Sr. Lead AI Engineer responsible for defining and improving the engineering architecture for Service and Marketing AI capabilities, building and hardening AI serving systems, and evolving the agentic architecture. This role involves leading the design of scalable, low-latency backend systems and APIs, developing services that host and orchestrate AI models, and driving the technical roadmap for AI agents. The engineer will also set standards for evaluation, safety, prompt/model versioning, testing, and incident response, and mentor other engineers. The role requires hands-on experience with generative and agentic AI in production, large-scale distributed systems, Python, cloud platforms (AWS, Kubernetes), and a strong focus on evaluation and quality.

Engineering Manager to lead a team building 'Customer Agent', a conversational AI system for brands to interact with customers at scale. The role involves setting technical direction, developing the team, driving architectural decisions, and keeping pace with AI advancements. Requires strong hands-on engineering experience, ability to engage deeply with technical problems, and leadership in building/scaling agentic systems and AI-enabled products.

Senior AI Engineer at Klaviyo, focusing on designing and building scalable backend systems and user experiences for AI products and AI agent solutions. The role involves developing data pipelines, serving AI models, and evolving agentic architecture. Requires strong backend and distributed systems experience, with expertise in generative AI and agentic AI applications.

Lead AI Engineer responsible for designing, building, and scaling backend and ML systems for AI agents that optimize marketing and customer experience strategies. Focuses on predictive systems, autonomous learning agents, and production ML pipelines at a large scale.

This role operates, tunes, and extends an agentic data quality pipeline for GTM data. It involves running and monitoring production pipeline sessions, diagnosing and resolving failures, refining detection rules and prompt logic, evaluating agent accuracy, and managing the handoff between automated output and human review. The goal is to improve pipeline reliability, detection and resolution quality, and data quality outcomes.

This role operates, tunes, and extends an agentic data quality pipeline for GTM data. It involves running and monitoring production pipeline sessions, diagnosing and resolving failures, refining detection rules and prompt logic, evaluating agent accuracy, and managing the handoff between automated output and human review. The goal is to improve pipeline reliability, detection and resolution quality, and data quality outcomes.

This role operates, tunes, and extends an existing agentic data quality pipeline for GTM data. It involves running production pipeline sessions, diagnosing and resolving failures, maintaining orchestration scripts, refining agent logic, evaluating agent accuracy, and managing the handoff between automated output and human review. The role focuses on operating and improving AI systems rather than building them from scratch.

Lead Data Science Analyst role focused on GTM strategy, building predictive models, and developing AI/LLM-powered solutions for customer lifecycle insights. Emphasizes AI-augmented workflows and an LLM-aware approach.

Lead Data Science Analyst role focused on GTM strategy, building predictive models, and developing AI/LLM-powered solutions for customer lifecycle insights. Emphasizes AI-augmented workflows and an LLM-aware approach.

Engineering Manager for Klaviyo's Conversational AI Platform team, responsible for leading a fullstack team to build the UI, orchestrator, and agent platform for an AI-powered conversational marketing experience. The role involves setting technical direction for intent detection, routing, planning, and multi-step LLM workflows, driving architectural decisions, and collaborating with product and design teams.

Senior AI Engineer to design, build, and scale production-grade LLM integrations and AI-powered automation tools. This role is at the intersection of applied AI research and full-stack software engineering, owning LLM integration architecture, RAG system design, CI/CD pipeline management, and production observability. The goal is to build AI that real people use at scale every day.

Senior Software Engineer focused on building and operating machine learning-powered backend systems for product recommendations. This role involves designing and implementing data pipelines, ranking models, and inference systems, with a strong emphasis on backend services, distributed systems, and integrating ML into production. The engineer will also drive the development of AI systems like vector search and agentic use cases, and contribute to observability and A/B testing.

Senior Security Engineer role focused on building and maintaining secure, reliable, and scalable detection and response systems. The role involves developing AI-first security systems, automating detection and response, optimizing security logging data for ML models, and responding to security incidents. Requires strong programming skills (Python, Go) and experience with CI/CD and large-scale data pipelines.

Senior Security Engineer role focused on building and maintaining secure, reliable, and scalable detection and response systems. The role involves developing AI-first security systems, automating detection and response, optimizing security logging data for ML models, and responding to security incidents. Requires strong programming skills (Python, Go) and experience with CI/CD and large-scale data pipelines.

Senior Security Engineer role focused on building and maintaining secure, reliable, and scalable detection and response systems. The role involves developing AI-first security systems, automating detection and response, optimizing security logging data for ML models, and responding to security incidents. Requires strong programming skills (Python, Go) and experience with CI/CD and large-scale data pipelines.

Lead AI Software Engineer for the Amplify team, focusing on building internal tools, platforms, and AI-powered automation to improve efficiency and scale for Klaviyo's internal operations across various departments. The role involves technical oversight, driving technical vision, leading complex projects, defining architectural evolution, and mentoring engineers, with a strong emphasis on AI-first development and establishing guardrails.

Senior Technical Program Manager for the Security Strategy and Governance team, focusing on delivering complex, cross-functional programs including AI governance, third-party risk, and compliance. The role involves applying AI-enabled tools to improve program management and identifying automation opportunities within the security domain.

Director of Security Risk and Trust responsible for engineering solutions for governance and compliance challenges at scale, building systems that make security and trust a competitive advantage, and leading a team at the intersection of security engineering, risk management, and regulatory compliance. This role will own the strategy and execution of Klaviyo's Risk and Trust program, partnering with Engineering, Product, Legal, IT, and business teams to embed compliance and risk management into how they build and operate. The role requires a strong technical foundation and an engineering mindset, with experience in designing automated compliance pipelines and developing governance frameworks for AI/ML systems. Responsibilities include defining and executing a forward-looking strategy, developing a risk management program, owning the compliance roadmap across various frameworks (ISO 27001, SOC 2, HIPAA, GDPR, CCPA/CPRA, AI governance), and translating regulatory requirements into engineering specifications. The role involves building compliance-as-code infrastructure, designing tooling and integrations, embedding controls into the SDLC, and evaluating technologies. A key focus is leading AI security governance, including developing an AI/ML governance framework aligned with ISO 42001, EU AI Act, and NIST AI RMF, and conducting risk assessments for AI/ML systems. The role also requires driving cross-functional impact with Product, Engineering, Legal, Privacy, Sales, and Customer Success teams, and engaging with executive leadership and the Board. The Director will also be hands-on with technical risk assessments, architecture reviews, automation scripting, and troubleshooting.

This role is a Pre-Sales Solutions Engineer for Klaviyo's EMEA Commercial team, focusing on the Italian-speaking market. The role involves supporting the technical aspects of sales deals, demonstrating the value of Klaviyo's platform to customers, and building customer confidence through technical expertise. While the role uses AI tools and mentions AI-powered demo data generators, its core function is in sales enablement and customer technical consultation, not direct AI/ML model development or deployment.

Senior Lead Software Engineer for Mobile Channels (SMS, RCS, WhatsApp) at Klaviyo. Drives technical strategy, architecture, and roadmap for high-throughput, reliable messaging systems. Focuses on hands-on leadership, reliability, scale, and integrating AI into engineering practices and system operations.

Senior Pre-Sales Solutions Engineer for Klaviyo's EMEA Commercial team, focusing on the Entrepreneur and SMB segment. This role involves acting as a trusted advisor, owning the technical win in sales cycles, designing solutions, and delivering tailored demos. The position requires fluency in French and English, with experience in B2B SaaS pre-sales, web technologies, APIs, and data integrations. The role also involves contributing to internal assets and providing feedback to product teams. While not directly building AI models, the role utilizes AI tools and contributes to AI-powered internal projects.

This role focuses on monitoring and investigating compliance operations and abuse issues within Klaviyo's platform. The analyst will partner with various teams (R&D, Deliverability, Customer) and external vendors to mitigate risk and improve long-term outcomes. A key aspect involves transforming workflows by integrating AI to build smarter systems and enhance operational efficiency. The role requires data analysis proficiency, understanding of AI in detection systems, and the ability to use AI tools to accelerate investigations and summarize incidents.

This role focuses on monitoring and investigating compliance operations and abuse issues within Klaviyo's platform. The analyst will partner with various teams (R&D, Deliverability, Customer) and external vendors to mitigate risk and improve long-term outcomes. A key aspect involves transforming workflows by integrating AI to build smarter systems and enhance operational efficiency. The role requires data analysis proficiency, understanding of AI in detection systems, and the ability to use AI tools to accelerate investigations and summarize incidents.

This role focuses on monitoring and investigating compliance operations and abuse issues within Klaviyo's platform. The analyst will partner with various teams (R&D, Deliverability, Customer) and external vendors to mitigate risk and improve long-term outcomes. A key aspect involves transforming workflows by integrating AI to build smarter systems and enhance operational efficiency. The role requires data analysis proficiency, understanding of AI in detection systems, and the ability to use AI tools to accelerate investigations and summarize incidents.

Engineering Manager for the Amplify team at Klaviyo, focusing on building internal tools, platforms, and AI-powered automation to improve efficiency and productivity across various departments. The role involves leading engineering teams, shaping technical direction, and partnering with stakeholders to deliver scalable software solutions. Emphasis on practical application of AI tools and workflows to solve real-world operational problems.

Software Engineer II on the Platform Anti-Abuse team at Klaviyo. This role involves building and operating backend services for fraud and abuse detection, integrating ML classifiers, and extending enforcement capabilities across product surfaces. The focus is on defending against real-world adversaries at scale using a combination of rules, signals, and ML.

Lead IT Systems Engineer responsible for designing, implementing, and maintaining enterprise SaaS systems, including SSO/SCIM, multi-tool integrations, and automation. The role involves mentoring team members, establishing team standards, partnering with stakeholders, and collaborating with various internal teams. A key requirement is demonstrated proficiency in understanding and integrating LLMs or other AI technologies into enterprise systems for automation or process improvement.

Software Engineer II - Analytics Data Engineering role focused on building and maintaining scalable data pipelines and core tables using PySpark, Airflow, and dbt. The role involves optimizing Spark jobs and storage for low-latency performance, treating data as a product, driving operational excellence, and partnering with AI/ML teams. There's an emphasis on using AI tools to improve the engineering workflow.

Senior Software Engineer on the Product Expansion/Activation team focused on improving the early customer experience, driving technical design, leading implementation of user-experience improvements, owning the end-to-end experimentation process, and mentoring other engineers. The role involves defining architectural approach and technical strategy, including leveraging AI agents in delivery. Requires extensive full-stack experience, data-driven mindset, and experience with AI-driven software delivery practices.

Software Engineer role focused on building AI-powered advanced reporting capabilities for enterprise clients within the Klaviyo platform. The role involves full-stack development, working with data access, aggregation, presentation layers, and front-end experiences. It emphasizes integrating insights with actions and exploring AI-assisted features.

Software Engineer II - Growth role at Klaviyo focused on improving the early customer experience and onboarding pipeline. The role involves implementing UX improvements, designing and running A/B tests, collaborating with various teams, and defining/implementing AI agents. It requires full-stack software engineering experience with an emphasis on user-facing features and data-driven product improvement.

Director of Engineering leading product engineering teams focused on customer journey, acquisition, activation, and onsite experience. Role involves leading multiple teams, partnering with cross-functional stakeholders, and driving an AI-first mindset to improve personalization, experimentation, and support. Requires strong product sense, experimentation culture, and leadership experience in a high-growth SaaS environment.

Lead Software Engineer for Klaviyo's Mobile Channels team, focusing on building and scaling high-throughput messaging infrastructure (SMS, RCS, WhatsApp). The role involves technical leadership, architecture, system design, and ensuring reliable delivery while managing compliance and regulations. A key aspect is transforming workflows by putting AI at the center, building smarter systems and ways of working.

Senior Engineering Manager for Klaviyo's Orchestrate group, leading teams responsible for customer communication experiences (Flows and Campaigns) across multiple channels. The role involves shaping the strategy, architecture, and execution of multi-channel orchestration, personalization, and scheduling systems, with a focus on integrating AI/ML features and adopting AI-first engineering practices.

This role is for a Sr. Solutions Engineer focused on Mid-Enterprise deals. The primary responsibility is to lead the technical win by architecting solutions, driving technical discovery, and partnering with sales. While the role leverages AI tools and automation for efficiency and builds AI-powered demo data generators, its core function is pre-sales technical consulting and solution design within the enterprise software domain, not direct AI/ML model development or research.

This role is for a Sr. Solutions Engineer focused on Mid-Enterprise deals. The primary responsibility is to lead the technical win by architecting solutions, driving technical discovery, and ensuring prospects choose Klaviyo. The role involves deep technical mastery of the Klaviyo platform, modern development stacks, and leveraging AI and automation to enhance customer outcomes and scale impact. While not directly building AI models, the role heavily utilizes AI tools and contributes to AI-powered product improvements.

This role is for a Sr. Solutions Engineer focused on Mid-Enterprise deals. The primary responsibility is to lead the technical win by architecting solutions, driving technical discovery, and partnering with sales. While the role leverages AI tools and automation for efficiency and builds AI-powered demo data generators, its core function is pre-sales technical consulting and solution design within the enterprise software domain, not direct AI/ML model development or research.

This role focuses on building systems, onboarding, and learning programs to enhance engineering productivity at Klaviyo. It involves designing an AI-first onboarding experience, standardizing engineering practices, and running experiments to improve developer velocity. The role will enable embedding AI into daily engineering workflows, codify engineering practices through documentation and training, and design technical learning programs focused on AI and emerging technologies. It also involves enabling engineering manager effectiveness and facilitating live learning sessions.

Backend Engineer role at Klaviyo focused on building and running core infrastructure for message rendering and engagement tracking at scale. The role involves improving existing products and developing new capabilities using distributed systems and AI technologies, with a focus on reliability and performance.

Senior Software Engineer, Infrastructure Security at Klaviyo. This role focuses on building internal platforms, systems, and services to enable engineers to develop securely and efficiently. The engineer will design, develop, and ship foundational security services, improve system availability, scalability, and performance, and mentor other engineers. While the role involves using AI-powered tools and exploring AI applications for productivity, its core function is in infrastructure security and general software engineering, not direct AI/ML model development.

Senior Pre-Sales Solutions Engineer for an enterprise SaaS company specializing in marketing technology and customer data platforms. The role involves leading technical strategy for complex, high-stakes enterprise deals, architecting solutions, and acting as a trusted advisor. It requires deep technical mastery, strategic thinking, and leveraging AI and automation to enhance effectiveness. The role also involves prototyping and shipping improvements to the product, including AI-powered tools.

Software Engineer II on the Amplify team building internal tools, platforms, and AI-powered automation for internal business operations. Focus on designing, building, and maintaining internal web applications, APIs, data pipelines, and AI-powered workflows. Role involves end-to-end ownership of features, collaboration with internal customers, and contributing to system architecture and operational health. Uses modern AI tools for development workflow.

Senior AI Software Engineer on the Amplify team, responsible for building internal tools, platforms, and AI-powered automation to improve efficiency and scale for internal teams. The role involves designing, building, and owning complex internal products, APIs, data pipelines, and AI-powered workflows, partnering with internal customers, and ensuring operational excellence. The engineer will also use modern AI tools in their development workflow and contribute to shared patterns for building internal tools and AI systems.

Engineering Manager for the Amplify team, which builds internal tools, platforms, and AI-powered automation to improve efficiency and productivity across various departments at Klaviyo. The role involves leading engineering teams, shaping technical direction, and partnering with stakeholders to deliver scalable software solutions, including AI-driven systems and agents.