Machine Learning Engineer - AI Platform, Equity & Flexible PTO

Polymer; Boston (MA); On-site; USD 150,000 - 230,000; Full time

Benefits offered by this job

Competitive salary and equity

Full healthcare benefits

Flexible PTO

Annual retreat

Fitness activity reimbursement

Job summary

Remark is reshaping ecommerce with AI-powered, personalized support to boost conversion and loyalty. We’re seeking a Machine Learning Engineer to plan, implement, and test features that transform consumer buying online.

You’ll work on a modern TS-based stack (NestJS, Prisma, Bull, LangChain, GraphQL) with ownership and strong input from every team member. This role focuses on building scalable ML pipelines and robust deployments.

Qualifications

• Strong background in Deep Learning, ML, and NLP.
• Proficient in JavaScript and Python.
• Expertise building apps leveraging LLMs and understanding deployment considerations.
• Familiar with LangChain, LlamaIndex, vector DBs, caching (Redis) and monitoring tools.
• Knowledge of secure deployment practices and robustness against prompt injection.
• Experience using qualitative and quantitative data (A/B tests) for engineering decisions.

Responsibilities

• Develop and enhance our LLM-based operations and pipelines.
• Work on cutting-edge role-playing and persona duplication techniques.
• Report directly to CTO.
• Develop actionable roadmaps for new capabilities and work with the engineering team to execute.
• Implement comprehensive evals for new capabilities.
• Balance speed and quality with tangible results.
• Participate in frequent code reviews with team.

Skills

Deep Learning

Machine Learning

NLP

JavaScript

Python

LLMs

Security deployment

A/B testing data analysis

Tools

LangChain

LlamaIndex

Redis

Job description

Remark is reshaping ecommerce with AI-powered, personalized support to boost conversion and loyalty. We’re seeking a Machine Learning Engineer to plan, implement, and test features that transform consumer buying online.

You’ll work on a modern TS-based stack (NestJS, Prisma, Bull, LangChain, GraphQL) with ownership and strong input from every team member. This role focuses on building scalable ML pipelines and robust deployments.