AI Engineer, AI Platform

Overview  Affinity stitches together billions of data points from massive datasets to create a powerful, accurate representation of the world's professional relationship graph. Based on this data, we offer our users the insights and visibility they need to nurture and tap into the opportunities in their team's network.
This role is part of the  AI Platform  team, which owns the AI services that power Affinity's industry-leading relationship intelligence platform. We extract and retrieve information from billions of structured and unstructured data points to deliver actionable insights to customers.
As an AI Engineer, you will collaborate with machine learning engineers, data engineers, software engineers, and product managers to shape the future of private capital's leading CRM platform. You will design and build LLM-powered AI systems that efficiently uncover insights from compelling business interaction data – an exciting and unique opportunity within the industry.
Responsibilities    Build RAG systems:  Architect, prototype, and deploy RAG pipelines, combining vector search, hybrid retrieval, reranking and contextual compression techniques.
Build LLM powered agent systems :
Contribute to design and orchestration of multi-agent LLM systems using community frameworks and custom orchestration layers.
Solve complex problems :
Work on a variety of information extraction, information storage and information retrieval problems for both structured and unstructured data.
Collaborate cross-functionally :
Partner with cross-functional (product, infra, data engineering, and software engineering) to build robust, high-scale systems that underlie all of our data processing and ML Operations.
Qualifications

Required:

2+ years of experience in software engineering and/or Machine Learning experience in applying machine learning in production.
Hands on experience with LLM applications in production including prompt engineering and utilizing frameworks for online and offline evaluation

Experience with LLM assisted search, such as query understanding and augmentation, text2sql, and entity extraction

Experience with vector or graph databases

Experience with document chunking, embedding models, and context window optimization
Familiarity with metadata-based retrieval and re-ranking strategies
Hands on experiences with model evaluation metrics (e.g. perplexity, hallucination rate, factual consistency)
Familiarity with data security, versioning, and MLOps principles
Nice to Have:

Experience with enterprise AI applications with strict compliance, audit, or legal requirements

Experience with dataset engineering, including data curation, augmentation, and synthesis, to assist ML model improvements.

Experience with multi-modal search

Experience with graph based recommendation systems, such as graph NN.

Experience with developing AI applications powered by agent-based systems

Experience with packaging, CI/CD and pipeline automation.
Tech stack  Our ML pipeline manages multiple Python services that support various AI features, including utilizing OCR to extract information from unstructured data, serving embedding models to vectorize chunks, and ranking a list of recommendations based on relevance and user preference.
How we work  Our culture is a key part of how we operate, as well as our hiring process:
We iterate quickly. As such, you must be comfortable embracing ambiguity, be able to cut through it, and deliver value to our customers.
We are candid, transparent, and speak our minds while simultaneously caring personally with each person we interact with.
We make data-driven decisions and make the best decision for the moment based on the information available.
If you’d want to learn more about our values .
What you ll enjoy at Affinity    We live our values:  As owners, we take pride in everything we do. We embrace a growth mindset, engage in respectful candor, act as play makers, and "taste the soup" by diving deep into experiences to create the best outcomes for our colleagues and clients.

Health Benefits:

We cover both you and your dependents  extended health benefit premiums and offer flexible personal & sick days to support your…