Senior Data Scientist, Machine Learning Engineer

The R&D department plays a pivotal role in driving Shelf to disrupt the market. We are looking for Machine Learning experts that are able to deliver end to end with a blend of experience: Python engineering, ML engineering, and pragmatic Data science and Machine learning research. You will ship end-to-end features—from problem framing and experimentation to service deployment, and ongoing operations—quickly and with high quality. Your work will power ML- and LLM-driven services used by top enterprises like Amazon, Mayo Clinic, AmFam, and Nespresso.

This role requires strong Python engineering capabilities coupled with a strong ability to deliver robust ML solutions, along with ML research literacy to choose sound methodologies, define metrics, and evaluate different approaches effectively.

You’ll work in an agile environment, move fast, and own what you ship.

Responsibilities

• Own end-to-end delivery: ideate, research, prototype, productionize, and operate ML-powered services with an expectation to iterate and ship frequently

• Stand up robust training/evaluation pipelines: dataset curation, labeling/feedback loops, experiment tracking, offline/online metrics, and A/B testing

• Solve problems using sound methodology, evaluate approaches along with 

• Transform ML models and LLM workflows (including RAG) into reusable, versioned, observable production services with CI/CD

• Collaborate with Product Owners to shape our product and requirements

• Conduct and receive code reviews; champion engineering excellence, testing discipline, and documentation

• Leverage AI coding assistants to accelerate development and create internal agents that automate parts of the engineering workflow

• Share learnings through demos, docs, and knowledge sessions; contribute to a culture of continuous improvement

  
  

Requirements

• 3+ years of professional experience researching and shipping ML-based solutions, with strong Python skills and a track record of delivering fast without sacrificing quality

• Proven experience in owning research problems end-to-end, starting from initial data analysis, through iterative research phases to delivering on production

• Practical NLP/LLM experience: transformers, embeddings, prompt design, and evaluation; ability to choose and justify metrics and methodologies

• Strong backend fundamentals: designing RESTful services, schema design, data modeling, and performance tuning for SQL and NoSQL stores

• Data processing skills: pandas/NumPy; experience with batch/stream processing and ETL orchestration (e.g., Airflow, Step Functions)

• Strong English verbal and written communication

  
  

As a plus

• LLM ops and safety: eval frameworks (e.g., RAGAS), guardrails, red-teaming, prompt optimization at scale

• Model optimization: quantization, distillation, pruning; GPU/accelerator-aware serving

• Experience with AWS ML stack (SageMaker, Batch, Step Functions, Lambda, SQS/SNS, DynamoDB, ECS, EC2, S3)

• Vector databases and search: Pinecone, Elasticsearch, pgvector, FAISS, or DeepLake

• Background in reinforcement learning, agent frameworks, or autonomous agents

• Publications, open-source contributions, GitHub portfolio

  
  

What Shelf Offers

• B2B contract

• Company Stock Options

• Hardware: MacBook Pro

• Modern technical stack. Develop open-source software

• Premier AI development environment: GitHub Copilot, Claude Code, OpenAI, TypingMind, v0, MCP Servers, plus credits to experiment with emerging AI tools

Why Shelf

• Leadership with deep knowledge management, AI, and enterprise SaaS expertise

• Customers love us for innovative capabilities, reliability, and measurable business impact

• $60M+ raised from top-tier investors including Tiger Global, Insight Partners, and Base10

• High-velocity growth, tripling year over year for three consecutive years

• 100+ employees across the U.S. and Europe with ambitious hiring plans

  
  

About Shelf

There is no AI Strategy without a Data Strategy. Getting GenAI to work is mission-critical for most companies, but 90% of AI projects haven't deployed. Why? Poor data quality—it’s the #1 obstacle companies face getting GenAI into production.

Shelf unlocks AI readiness. We provide the core infrastructure that enables GenAI to be deployed at scale. We help companies deliver more accurate GenAI answers by eliminating bad data in documents and files before they go into an LLM and create bad answers.

We’re partnered with Microsoft, Salesforce, Snowflake, Databricks, OpenAI and other leaders bringing GenAI to the enterprise. Our mission is to empower humanity with better answers everywhere.