Company Overview

At Marqo, we are building Commerce Superintelligence: an intelligence layer that unifies deep product understanding, shopper behaviour, and personalisation. We train a dedicated AI for each retailer that learns their catalogue, from visual attributes and the relationships between products to commercial signals like margin and inventory priority, and use it to power search, recommendations, merchandising, and conversational commerce. We are a startup headquartered in San Francisco with engineering operations out of Melbourne, Australia, founded by former Amazon engineers and scientists with deep expertise in search relevance, distributed systems, and machine learning. We are backed by leading venture capital firms, are Series A funded, and today power search and product discovery for some of the most innovative retailers and marketplaces in the world.

About the Role

We are looking for a Senior Software Engineer to help build Marqo's AI agent for ecommerce. The agent is the storefront chat on a merchant's site: it helps shoppers find what they need and answers their questions, such as "where is my order?"

You will own features end to end, from design to production, and keep them running efficiently and reliably at scale. You will help drive the roadmap and technical direction of the agent, hold a high bar for quality, and bring deep customer empathy to the problems you solve.

What You'll Do

• Build harnesses around foundation models: routing, tools, context, and recovery, enabling delightful end user experiences.
• Build systems that adapt and self-optimise based on system and customer behaviour data.
• Make engineering and product trade-offs carefully, in service of customer needs and engineering goals.
• Take frontier retrieval and LLM research into production at scale.
• Define what good looks like, measure it rigorously, and improve against it.
• Raise the standard of the tooling and instrumentation behind serving at scale.

Basic Qualifications

• 5+ years of software engineering experience and strong fundamentals, with a track record of owning systems end to end in production.
• Experience operating and maintaining large-scale commercial production systems, from design to operations.
• A high bar for quality, and working to raise that bar over time.
• Strong customer empathy: you keep the people who use what you build front of mind.
• Clear written and verbal communication, and the ability to break ambiguous problems into shippable steps.

Preferred Qualifications

• Experience building agentic or conversational AI systems in production, including routing, multi-step tool use, and guardrails against hallucination.
• Experience building low-latency systems on edge or serverless infrastructure, for example Cloudflare Workers.
• Experience integrating with commerce or SaaS platforms such as Shopify, with a strong handle on auth and security.
• Experience with retrieval and search systems.
• Evaluation for LLM quality, and observability for production AI.

What You'll Get

• High impact ownership of features that will impact millions of ecommerce shoppers.
• A collaborative, open, idea-heavy culture.
• Competitive compensation, including equity.
• The chance to work at the frontier of agentic AI and commerce, with modern AI tooling as a first-class part of how we build.
• Flexibility of work hours, and close collaboration with top machine learning scientists and engineers.