Skill Profile

LLM Applications

RAG, LangChain/LlamaIndex, prompt templates, embedding, vector databases

Machine Learning & AI LLM & Generative AI

Roles

4

where this skill appears

Levels

5

structured growth path

Mandatory requirements

14

the other 6 optional

Domain

Machine Learning & AI

Group

LLM & Generative AI

Last updated

3/17/2026

How to Use

Choose your current level and compare expectations. The items below show what to cover to advance to the next level.

What is Expected at Each Level

The table shows how skill depth grows from Junior to Principal. Click a row to see details.

Role Required Description
AI Product Engineer Integrates pre-built LLM APIs into product features using standard SDKs. Writes basic prompts for user-facing functionality such as summarization or Q&A. Tests LLM outputs manually against expected behavior and documents edge cases for product scenarios.
Data Scientist Uses LLM APIs for basic text classification and named entity recognition tasks on structured datasets. Generates embeddings for simple similarity search and clustering. Applies pre-trained models to extract insights from text data, evaluating output quality with standard metrics.
LLM Engineer Deploys LLM inference endpoints using managed services and monitors latency and error rates. Writes structured prompts with few-shot examples following team guidelines. Tracks token usage across requests, identifies costly queries, and applies basic prompt length optimization techniques.
NLP Engineer Required Knows basics of LLM applications for NLP tasks: text generation, summarization, few-shot classification. Uses Hugging Face transformers for basic text processing tasks.
Role Required Description
AI Product Engineer Designs prompt chains and multi-step LLM workflows for complex product features. Implements A/B testing frameworks to compare LLM-powered feature variants and measure user engagement. Establishes evaluation criteria for AI output quality and builds feedback loops from user interactions.
Data Scientist Builds RAG pipelines combining vector stores with LLM generation for domain-specific knowledge retrieval. Designs embedding strategies for multi-modal similarity search. Fine-tunes classification heads on top of LLM embeddings and benchmarks results against traditional ML baselines on production data.
LLM Engineer Builds fine-tuning pipelines with dataset curation, training orchestration, and automated evaluation. Implements prompt templating systems supporting versioning and rollback across environments. Designs LLM evaluation frameworks with automated scoring, regression detection, and human-in-the-loop review workflows.
NLP Engineer Required Independently develops LLM applications for NLP tasks: chain-of-thought for complex NER, LLM-as-judge for text quality evaluation, structured output for document data extraction.
Role Required Description
AI Product Engineer Required Architects end-to-end LLM product systems with graceful degradation, caching strategies, and cost controls. Defines prompt engineering standards across the product organization. Leads cross-functional evaluation of AI features combining quantitative metrics with qualitative UX research and user safety analysis.
Data Scientist Required Designs advanced RAG architectures with hybrid retrieval, re-ranking, and context window optimization for domain-critical applications. Develops custom NER and relation extraction pipelines combining LLMs with structured knowledge graphs. Mentors team on embedding space analysis and LLM evaluation methodology.
LLM Engineer Required Designs scalable LLM serving infrastructure with model routing, adaptive batching, and multi-region deployment. Establishes organization-wide prompt engineering practices with governance and audit trails. Optimizes token budgets across services through semantic caching, prompt compression, and model distillation strategies.
NLP Engineer Required Designs complex LLM applications for production NLP: multi-agent systems for document analysis, LLM orchestration for multi-step NLP pipelines. Optimizes quality and inference cost.
Role Required Description
AI Product Engineer Required Defines LLM Applications strategy at the team/product level. Establishes standards and best practices. Conducts reviews.
Data Scientist Required Defines the strategic roadmap for LLM adoption in data science workflows across the organization. Establishes evaluation standards for LLM-augmented analytics including bias detection, hallucination measurement, and domain accuracy benchmarks. Drives build-vs-buy decisions for embedding infrastructure and RAG platforms.
LLM Engineer Required Leads the LLM platform team, defining architecture standards for inference, fine-tuning, and evaluation infrastructure. Coordinates cross-team prompt engineering governance and token budget allocation. Drives vendor evaluation for foundation models, balancing capability, cost, and compliance requirements across the engineering organization.
NLP Engineer Required Defines LLM application strategy for the NLP team. Establishes architectural patterns, prompt engineering standards, and evaluation framework for LLM-based NLP systems.
Role Required Description
AI Product Engineer Required Defines LLM Applications strategy at the organizational level. Establishes enterprise approaches. Mentors leads and architects.
Data Scientist Required Shapes the organization's vision for LLM-augmented data intelligence, aligning research initiatives with business strategy. Pioneers novel approaches combining LLMs with causal inference, simulation, and decision systems. Publishes findings and represents the company at conferences, influencing industry standards for responsible LLM use in analytics.
LLM Engineer Required Defines the company-wide LLM engineering strategy spanning model selection, deployment topology, and cost governance. Architects next-generation LLM platforms supporting multi-model orchestration, continuous evaluation, and automated optimization. Drives industry partnerships and open-source contributions that advance the state of LLM infrastructure and tooling.
NLP Engineer Required Shapes enterprise LLM application strategy for the NLP platform. Defines LLM adoption roadmap, security policies, and architectural standards for all organizational NLP products.

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