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Headquarters:

We are seeking an AI Engineer to develop AI-first applications and integrate custom models and infrastructure into an existing e-commerce platform. The role focuses on building agent-led product experiences, including internal automation, dynamic site customization, and customer-facing conversational commerce workflows.

General information
This engagement supports an e-commerce startup building a platform around conversational design and intelligent automation. The current objective is to extend the existing product with AI-native capabilities while building on top of the current backend and application stack.

The work includes three core initiative areas: an internal AI employee for operational tasks, a fluid site customizer, and a customer-facing commerce agent designed to support one-prompt checkout experiences. The role will involve model integration, infrastructure setup, and product-facing implementation across both backend and UI surfaces.

Tasks and Deliverables
- Develop AI-first applications for an existing e-commerce platform.
- Architect and implement autonomous e-commerce AI agents using open-source and proprietary foundation models.
- Establish GPU infrastructure and data pipelines for model fine-tuning and deployment.
- Integrate AI workflows with the existing stack, including MongoDB, Node.js, Express, React, and third-party APIs.
- Build conversational UI components and backend logic for one-prompt checkouts and dynamic site customization.

Required Experience
- Strong expertise in AI/ML engineering and LLM integration.
- Hands-on experience fine-tuning open-source models such as Llama or Mistral.
- Experience building autonomous agents and conversational AI workflows.
- Solid background in GPU infrastructure setup and optimization for training or inference.
- Full-stack proficiency with MongoDB, Express, React, and Node.js.
- Experience integrating REST APIs into production applications.

Nice to have:
- Familiarity with Stripe, Twilio, or OpenAI API integrations.

To apply: https://weworkremotely.com/remote-jobs/toptal-ai-ml-engineer-for-an-ai-driven-e-commerce-platform

Headquarters: Austin, TX
URL: https://edfinity.com

About Edfinity

Edfinity is the category leader in courseware and assessment technology for higher-ed STEM. We're NSF-supported, bootstrapped, and built by a close-knit remote team of senior engineers. We're growing fast and leading the field in AI-powered courseware that moves the needle on educator productivity and student outcomes. Your work will reach hundreds of institutions, and you will help decide how it gets built.

How we work

• We're fully remote, with team members distributed across the US, and with that comes personal flexibility and accountability.
• AI agents produce most of our code. We move fast, but we temper velocity with quality and stability above all else.
• Engineers frame the problems, direct the work, and are accountable for everything that ships. If you already work this way and have opinions about it, you'll feel at home.
• Everyone has opportunities to work across different areas of the platform, and team members are expected to develop deep technical expertise over time. This is particularly important as we step away from hands-on coding.
• We're a small team of collaborative senior engineers. Your opinion matters.
• The pace of change is real. More than ever, we're continually evolving our tooling and workflows as LLMs become more capable.

What you’ll be doing

Our stack is Ruby on Rails, MongoDB, Elasticearch, ClickHouse, Redis/Sidekiq, and React.

• Full-stack product development in areas like assessment authoring, delivery, and grading; educator and student-facing features; LMS integrations
• LLM-powered features, from prompt architecture to auto-grading to eval infrastructure
• Performance optimization and reliability refactoring to handle both day-to-day load and high-stakes spikes
• Stewardship of a mature codebase: upgrades, migrations, and paying down technical debt methodically
• Part-time technical support rotation. Customer happiness is extremely important to us.

What you'll need

• 8-15 years building and running scalable production web applications and services
• Deep experience with Rails
• Experience with web front-ends such as React
• Recent experience in an SDLC revolving around the use of AI agents
• Strong CS fundamentals in systems, data modeling, and complexity
• Excellent communication hygiene, collaborative skills, and strong sense of self-direction.
• Interest in a long-term seat on a close-knit team.
• Authorization to work in the United States. We are not able to sponsor or transfer work visas at this time.

Compensation

$135,000-$195,000, plus eligibility for an annual discretionary bonus, retirement plan, and PTO

To apply: https://weworkremotely.com/remote-jobs/edfinity-senior-software-engineer-remote