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Senior Backend Engineer, AI Agent Platform

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61% 2 of 4 skills

aigenerative-aiklaviyo

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148 000 – 222 000 $

Work format: Hybrid
Location: Boston, United States
Region: North America
Grade: Senior
Experience: 5+ yrs
Category: Backend
Country
Relocation: Not supported
Company: Product
Size: 501-1000
Domains: AI,DevTools

whatjobs Posted Jul 31, 2026

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Summary

Designs and scales backend systems for AI solutions, focusing on generative AI and ML projects in a hybrid work environment.

Klaviyo Inc. is hiring a Senior Software Engineer for the Agent Platform in Boston, MA. The role focuses on designing and scaling backend systems for AI solutions, influencing architecture and processing. Candidates should have over 5 years of experience in backend software engineering and familiarity with generative AI and ML projects.

The position offers a hybrid work model and a competitive salary range of $148,000 to $222,000 USD. Ideal applicants will be curious, proactive, and able to work with cross-functional teams.

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Klaviyo

2 weeks ago

Senior Backend Engineer, AI Agents Platform (Hybrid)

North AmericaSenior H-1B sponsor history USCIS — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.

Designs and scales backend systems for AI products and agent solutions, collaborating with ML engineers and data scientists to deliver production-grade AI features and data pipelines.

aidata-pipelinesklaviyomachine-learningpython

78% · 4/5 skills

Klaviyo Inc.

2 weeks ago

Senior Backend Engineer, AI Agent Platform

HybridNorth AmericaSenior

Senior Backend Engineer at Klaviyo in Boston builds and scales systems that power AI solutions for 167K+ customers, collaborating with product and data science teams.

aigenerative-aiklaviyo

Senior AI Engineer: Scalable Backend & AI Agents

North AmericaSenior

Senior AI Engineer at Klaviyo in Boston builds and scales backend systems that power AI solutions, using Python and distributed architectures.

Senior Software Engineer, Agent Platform

Open 58d North AmericaSenior H-1B sponsor history USCIS — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.

Senior Software Engineer designs and scales backend systems for AI-driven marketing agents at Klaviyo, working with Python, distributed systems, and tools like LangChain and vLLM.

agentic-aiaiapiawscloud +18 skills

Senior AI Engineer: Scalable Backend & AI Agents (Boston)

North AmericaSenior

Senior AI Engineer builds scalable backend systems and distributed architectures in Python to power AI solutions at a Boston-based tech company.

Senior AI Engineer - Customer Agent

Senior AI Engineer at Klaviyo builds and scales backend systems for AI-driven customer agent products, leveraging Python, FastAPI, and AWS to power marketing automation for 167K+ clients.

agentic-aiaiapiawsci-cd +19 skills

148 000 – 222 000 $

73% · 18/24 skills