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Senior Backend Engineer, AI Agent Platform

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78% 2 of 3 skills

aigenerative-aiklaviyo

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How your CV reads against this role — fit, gaps, and ATS flags.

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

whatjobs Posted Jul 30, 2026

Summary

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.

Klaviyo Inc. in Boston is looking for a Senior Software Engineer to design and scale backend systems that power AI solutions for over 167K customers. This role involves collaboration with product managers and data scientists to deliver impactful solutions. The ideal candidate has 5+ years of experience as a backend engineer and strong hands-on experience with generative AI.

This hybrid position offers a salary range from $148,000 to $222,000, along with comprehensive benefits and a potential for travel up to 10%.

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Klaviyo Inc.

2 weeks ago

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 Backend Engineer, AI Agent Platform

HybridNorth AmericaSenior

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

aigenerative-aiklaviyomachine-learning

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

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 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

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

4 days ago

Senior Software Engineer, Agent Platform

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

148 000 – 222 000 $

65% · 15/23 skills