---
title: "LangChain | Skills We Assign For | Azendo"
description: "LangChain for LLM applications — abstraction value versus cost, and the Azendo roles assigned for it."
url: "https://azendo.co/skills/langchain/"
---

[Skills](https://azendo.co/skills/) AI and machine learning 

# LangChain.

LangChain is a framework for building language model applications, providing abstractions over providers, prompt templates, retrieval, memory, agents and tool use, with a large integration ecosystem.

## Where LangChain fits on a long engagement.

LangChain's value is highest at the prototype stage. Integrations for dozens of providers, vector stores and document loaders mean a retrieval pipeline can be assembled in an afternoon, and comparing components is a line change rather than an integration project.

In production the abstraction can cost more than it saves. Debugging through several layers to find what prompt was actually sent is harder than reading a direct call, the API has changed substantially across versions, and many teams eventually replace the framework with a few hundred lines they fully control.

## What an assigned team does with LangChain.

The useful pattern is prototyping with the framework and being willing to drop it. Recognising when the abstraction has stopped paying for itself is a judgement call, and holding onto it out of sunk cost is the expensive option.

Making that call honestly is easier with specialists who have been through the cycle before, which is what continuity on a [dedicated development team](https://azendo.co/services/dedicated-development-team/) provides.

## What we use LangChain for.

* Assembling a pipeline quickly Integrations available, so a retrieval prototype exists in a day.
* Comparing components cheaply Swapping vector store or provider as a configuration change during evaluation.
* Knowing when to drop the framework Replacing abstraction with direct calls once the shape of the system is settled.

## How LangChain capacity is assigned.

LLM application capacity is assigned under [ai engineering services](https://azendo.co/services/ai-engineering/), with framework choice revisited as the system matures rather than fixed at prototype.

## Roles we assign LangChain for

* [AI Engineer AI engineering](https://azendo.co/services/ai-engineering/ai-engineer/)

## Service lines it sits in

* [AI engineering](https://azendo.co/services/ai-engineering/)

Capacity is agreed as a committed monthly capacity across a discipline, not per skill.

## Related in ai and machine learning

* [PyTorch — skill we assign for](https://azendo.co/skills/pytorch/)
* [TensorFlow — skill we assign for](https://azendo.co/skills/tensorflow/)
* [scikit-learn — skill we assign for](https://azendo.co/skills/scikit-learn/)
* [Pandas — skill we assign for](https://azendo.co/skills/pandas/)
* [NumPy — skill we assign for](https://azendo.co/skills/numpy/)
* [embeddings — skill we assign for](https://azendo.co/skills/embeddings/)
* [function calling — skill we assign for](https://azendo.co/skills/function-calling/)
* [vLLM — skill we assign for](https://azendo.co/skills/vllm/)

## Tell us what your roadmap needs LangChain for.

A service delivery manager replies with the disciplines we would assign, the monthly capacity and what the first month looks like.

[All skills we assign for](https://azendo.co/skills/)