Klaviyo
Overview
Senior AI Software Engineer at Klaviyo. You’ll design and build scalable backend systems and user experiences that power our AI products and AI agent solutions. This is a backend-heavy role with opportunities to influence architecture, async processing pipelines, distributed systems, and more. How You Will Make a Difference
Design and build backend systems that support scaling our AI solutions for 167K+ customers. Develop robust, reliable and scalable data collection and processing pipelines for machine learning models to train and consume. Develop robust, reliable and scalable services to serve AI models in production environments. Contribute to evolving our agentic architecture — making our AI agents more self-sufficient and performant. Contribute to a culture of ownership, experimentation, and customer-centric product thinking. Who You Are
5–7 years of professional experience in software engineering, with a strong focus on backend systems and distributed architectures. Hands-on experience building and deploying generative AI and agentic AI applications into production, with expertise in prompt engineering, few-shot learning, fine tuning and evaluation. Experienced backend engineer with a strong track record of building scalable, distributed systems, especially in the service of AI agent capabilities. Proficient in Python and modern backend frameworks (FastAPI, Django preferred). Experience creating human and automated evals to ensure high AI model quality. Proficient in big data tools such as Apache Spark and Hadoop. Deep experience with asynchronous processing and distributed task queues (Celery, Kafka, SQS, RabbitMQ, Redis). Strong understanding of database technologies and ORMs (SQLAlchemy, Alembic). Comfortable with cloud-native architectures (AWS) and container orchestration (Kubernetes); can manage infrastructure and CI/CD pipelines. Skilled at designing and building robust APIs. Able to operate with a high degree of autonomy, handle ambiguity, and thrive in a fast-moving, startup-like environment. Driven by curiosity. You learn and stay up to date with this rapidly evolving field. Comfortable collaborating directly with product managers and customers to shape solutions. Nice to Have
Trained ML models in the past and deployed them in production systems to generate impact to businesses. Experience in reinforcement learning. Additional Details
Salary information and total rewards described; base pay range for US locations: $152,000—$228,000 USD. Equal opportunity employer. Klaviyo is committed to equal opportunity and non-discrimination. Important privacy and security notices apply to job applicants; no payment or sensitive information is requested during the process. Seniority level
Mid-Senior level Employment type
Full-time Job function
Engineering and Information Technology Industries: Marketing Services Massachusetts Applicants: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment. See legal notices in the job posting for more information.
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Senior AI Software Engineer at Klaviyo. You’ll design and build scalable backend systems and user experiences that power our AI products and AI agent solutions. This is a backend-heavy role with opportunities to influence architecture, async processing pipelines, distributed systems, and more. How You Will Make a Difference
Design and build backend systems that support scaling our AI solutions for 167K+ customers. Develop robust, reliable and scalable data collection and processing pipelines for machine learning models to train and consume. Develop robust, reliable and scalable services to serve AI models in production environments. Contribute to evolving our agentic architecture — making our AI agents more self-sufficient and performant. Contribute to a culture of ownership, experimentation, and customer-centric product thinking. Who You Are
5–7 years of professional experience in software engineering, with a strong focus on backend systems and distributed architectures. Hands-on experience building and deploying generative AI and agentic AI applications into production, with expertise in prompt engineering, few-shot learning, fine tuning and evaluation. Experienced backend engineer with a strong track record of building scalable, distributed systems, especially in the service of AI agent capabilities. Proficient in Python and modern backend frameworks (FastAPI, Django preferred). Experience creating human and automated evals to ensure high AI model quality. Proficient in big data tools such as Apache Spark and Hadoop. Deep experience with asynchronous processing and distributed task queues (Celery, Kafka, SQS, RabbitMQ, Redis). Strong understanding of database technologies and ORMs (SQLAlchemy, Alembic). Comfortable with cloud-native architectures (AWS) and container orchestration (Kubernetes); can manage infrastructure and CI/CD pipelines. Skilled at designing and building robust APIs. Able to operate with a high degree of autonomy, handle ambiguity, and thrive in a fast-moving, startup-like environment. Driven by curiosity. You learn and stay up to date with this rapidly evolving field. Comfortable collaborating directly with product managers and customers to shape solutions. Nice to Have
Trained ML models in the past and deployed them in production systems to generate impact to businesses. Experience in reinforcement learning. Additional Details
Salary information and total rewards described; base pay range for US locations: $152,000—$228,000 USD. Equal opportunity employer. Klaviyo is committed to equal opportunity and non-discrimination. Important privacy and security notices apply to job applicants; no payment or sensitive information is requested during the process. Seniority level
Mid-Senior level Employment type
Full-time Job function
Engineering and Information Technology Industries: Marketing Services Massachusetts Applicants: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment. See legal notices in the job posting for more information.
#J-18808-Ljbffr