---
title: "Hire LangFuse Developers | AI Observability Engineers | Vindler"
description: "Hire senior LangFuse developers for AI observability, LLM monitoring, and production tracing. We build evaluation pipelines, cost tracking dashboards, and quality monitoring for enterprise AI systems."
url: "https://vindler.solutions/hire/langfuse-developers"
locale: "en"
updatedAt: "2026-11-12"
---

# AI Observability Engineers Who Ship Production Monitoring

Your AI is a black box until you instrument it. We build production observability with LangFuse: full trace visibility, cost tracking, quality evaluation, and the dashboards your team needs to ship AI with confidence.

Tell Us About Your Project

Technology Partners

[AWS Partner Network](https://aws.amazon.com/partners/)[LangChain](https://www.langchain.com/)

Recognized by Clutch

[Top Clutch AI Consulting Company Brazil 2026](https://clutch.co/profile/vindler-solutions)[Top Clutch AI Company Brazil 2026](https://clutch.co/profile/vindler-solutions)[Top Clutch AI Company São Paulo 2026](https://clutch.co/profile/vindler-solutions)[Top Clutch Chatbot Company Brazil 2026](https://clutch.co/profile/vindler-solutions)

## What We Build with LangFuse

From tracing setup to full observability platforms, we deliver LangFuse solutions that give you visibility into your AI systems.

### Full-Stack LLM Tracing

Instrument every LLM call, retrieval operation, tool invocation, and agent step with LangFuse traces. We give you complete visibility into what your AI is doing, how long it takes, what it costs, and where it fails. No more debugging production AI by reading logs.

### Evaluation Pipelines

Automated quality evaluation that runs before every deployment. We build golden dataset testing, LLM-as-judge scoring, retrieval quality metrics (precision, recall, MRR), and regression detection so you catch quality drops before users do.

### Prompt Management & Versioning

Use LangFuse prompt management to version, test, and deploy prompts without code changes. We set up A/B testing frameworks that compare prompt variants in production and automatically surface the winners based on your quality metrics.

### Cost Tracking & Optimization

Real-time cost per request tracking, token usage analytics, and spending alerts. We build dashboards that show exactly where your AI budget goes and implement optimization strategies (caching, model routing, prompt compression) that typically cut costs 40-60%.

### Quality Monitoring & Alerting

Continuous monitoring of AI output quality with automated scoring and alerting. We set up dashboards for latency percentiles, error rates, user satisfaction signals, and retrieval relevance, with PagerDuty and Slack integration for anomaly detection.

### Dataset Management & Testing

Build and maintain evaluation datasets directly in LangFuse. We create annotation workflows for human labelers, manage golden datasets that grow over time, and automate regression testing against these datasets on every deployment.

Built by Senior Engineers

## Why AI Observability Requires Senior Engineering

Most AI teams ship models to production and hope for the best. When something goes wrong, and it always does, they dig through application logs trying to reconstruct what the LLM received and what it returned. This is not observability. This is archaeology. Production AI systems need the same level of monitoring that backend services have had for a decade: traces, metrics, alerts, and dashboards.

LangFuse is the open-source standard for AI observability, but installing it is not the same as using it well. The difference between a basic integration and production-grade observability is in the details: how you structure traces for multi-agent systems, how you build evaluation datasets that actually represent your users, how you set alert thresholds that catch real problems without creating noise, and how you use the data to systematically improve your AI system over time.

We have instrumented AI systems serving thousands of users daily. We know which metrics matter, how to build evaluation pipelines that scale, and how to turn observability data into actionable improvements. When you hire our team, you get engineers who treat AI monitoring as a first-class engineering discipline, not an afterthought.

## Our Tech Stack

We work across the AI observability ecosystem and integrate with the tools your team already uses.

LangFuse

LangSmith

LangChain

LangGraph

Python

TypeScript

FastAPI

OpenAI

Anthropic Claude

AWS Bedrock

Prometheus

Grafana

PagerDuty

Sentry

Datadog

## LangFuse Projects We Have Delivered

Real results from production AI observability deployments.

[35% improvement in response quality

### AI Sales Assistant Observability

Implemented full LangFuse tracing for a RAG-based sales assistant. Identified retrieval quality issues through evaluation pipelines, optimized prompts using A/B testing, and reduced LLM costs by 45% through model routing.

Read Case Study](https://vindler.solutions/case-studies/ai-sales-assistant-rag)[90% faster debugging

### Multi-Agent System Monitoring

Built comprehensive observability for a multi-agent system. LangFuse traces across all agent interactions enabled rapid debugging and quality optimization across coordinated workflows.

Read Case Study](https://vindler.solutions/case-studies/multi-agent-systems-architecture)[75% issue resolution tracked end-to-end

### Chatbot Quality Monitoring

Deployed LangFuse monitoring for an enterprise chatbot. Real-time quality scoring, cost tracking per conversation, and automated alerts for quality regressions.

Read Case Study](https://vindler.solutions/case-studies/llm-customer-chatbot)

## How We Work

A straightforward process from first call to production deployment.

Step 1

### Discovery Call

We start with a 30-minute technical conversation to understand your data, your users, and your constraints. No sales pitch. We dig into what you have tried, what failed, and what success looks like.

Step 2

### Architecture Proposal

Within a week, we deliver a detailed technical proposal: system architecture, technology choices with rationale, estimated timeline, and cost breakdown. You will know exactly what we plan to build and why.

Step 3

### Build & Ship

We build iteratively with weekly demos. You see working software from week one, not slide decks. Every PR is reviewed, every decision is documented, and we transfer knowledge continuously so your team can maintain what we build.

## Frequently Asked Questions

### 

### 

### 

### 

### 

### 

### 

## Ready to See Inside Your AI Systems?

Tell us about your AI observability needs and we will respond within 24 hours with an initial assessment. Whether you need LangFuse setup, evaluation pipelines, or cost optimization.

Free 30-minute discovery call

LangFuse architecture proposal within one week

Full observability setup in the first sprint

### Get a Free Assessment

Describe your AI observability needs and we'll assess how LangFuse can give you production visibility.

## Structured data

```json
{"@context":"https://schema.org","@type":"Organization","@id":"https://vindler.solutions/#organization","name":"Vindler Solutions","alternateName":"Vindler","legalName":"Vindler Desenvolvimento de Sistemas de IA Ltda - EPP","url":"https://vindler.solutions","logo":"https://vindler.solutions/logo.png","description":"Vindler is a global AI engineering consultancy specializing in custom AI solutions, LLM integration, and enterprise-grade AI systems.","foundingDate":"2025-06-02","foundingLocation":{"@type":"Place","name":"São Paulo, Brazil"},"taxID":"61.102.920/0001-05","email":"contact@vindler.solutions","telephone":"+1-646-846-5339","numberOfEmployees":{"@type":"QuantitativeValue","minValue":1,"maxValue":10},"areaServed":[{"@type":"Country","name":"United States"},{"@type":"Place","name":"Europe"},{"@type":"Country","name":"Brazil"}],"knowsAbout":["Multi-agent systems","Retrieval-augmented generation","Voice AI agents","LangChain","LangGraph","LiveKit","AWS Bedrock","Model Context Protocol","LLM observability and evaluation"],"founder":{"@type":"Person","@id":"https://vindler.solutions/about#carlos-dutra","name":"Carlos Dutra","jobTitle":"Founder and CEO","url":"https://vindler.solutions/about","sameAs":["https://www.linkedin.com/in/carlosdutra","https://github.com/cdutr"]},"contactPoint":{"@type":"ContactPoint","contactType":"Customer Support","email":"contact@vindler.solutions","telephone":"+1-646-846-5339","url":"https://vindler.solutions/contact","availableLanguage":["English","Portuguese","Spanish"]},"address":[{"@type":"PostalAddress","addressLocality":"São Paulo","addressRegion":"SP","addressCountry":"BR","streetAddress":"Av. Paulista, 1636"},{"@type":"PostalAddress","addressLocality":"New York","addressRegion":"NY","addressCountry":"US","streetAddress":"524 Broadway","postalCode":"10012"}],"sameAs":["https://www.linkedin.com/company/vindler-tech/","https://github.com/vindler-solutions","https://clutch.co/profile/vindler-solutions","https://www.wikidata.org/wiki/Q141018871","https://www.crunchbase.com/organization/vindler-solutions"],"memberOf":{"@type":"Organization","name":"Brazilian-American Chamber of Commerce, Inc.","url":"https://brazilcham.com/","sameAs":"https://www.linkedin.com/company/brazilian-american-chamber-of-commerce-inc./"},"hasOfferCatalog":{"@type":"OfferCatalog","name":"AI Engineering Services","itemListElement":[{"@type":"Offer","itemOffered":{"@type":"Service","name":"AI Engineering","description":"Custom AI systems development from prototyping to deployment."}},{"@type":"Offer","itemOffered":{"@type":"Service","name":"Custom ChatBots & Agents","description":"Intelligent, multilingual, and domain-specific conversational AI."}},{"@type":"Offer","itemOffered":{"@type":"Service","name":"AI Architecture Consultancy","description":"Designing scalable, secure, and ethical AI infrastructure for enterprises."}},{"@type":"Offer","itemOffered":{"@type":"Service","name":"Training & Team Building","description":"Upskill your team or recruit top-tier AI talent."}}]}}
```

```json
{"@context":"https://schema.org","@type":"WebPage","name":"Hire LangFuse Developers | AI Observability Engineers | Vindler","description":"Hire senior LangFuse developers for AI observability, LLM monitoring, and production tracing. We build evaluation pipelines, cost tracking dashboards, and quality monitoring for enterprise AI systems.","url":"https://vindler.solutions/hire/langfuse-developers","isPartOf":{"@type":"WebSite","@id":"https://vindler.solutions/#website","name":"Vindler Solutions","url":"https://vindler.solutions/"},"publisher":{"@type":"Organization","@id":"https://vindler.solutions/#organization","name":"Vindler Solutions","url":"https://vindler.solutions"}}
```

```json
{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://vindler.solutions"},{"@type":"ListItem","position":2,"name":"Hire LangFuse Developers","item":"https://vindler.solutions/hire/langfuse-developers"}]}
```

```json
{"@context":"https://schema.org","@type":"Service","serviceType":"LangFuse Development & AI Observability","provider":{"@type":"Organization","@id":"https://vindler.solutions/#organization","name":"Vindler Solutions","url":"https://vindler.solutions"},"description":"Senior LangFuse developers for AI observability, LLM tracing, evaluation pipelines, and production monitoring of enterprise AI systems.","areaServed":{"@type":"Place","name":"Worldwide"}}
```

```json
{"@context":"https://schema.org","@type":"FAQPage","mainEntity":[{"@type":"Question","name":"What is LangFuse and why do we need it?","acceptedAnswer":{"@type":"Answer","text":"LangFuse is an open-source observability platform for LLM applications. It captures detailed traces of every AI interaction: what prompt was sent, what the model returned, how long it took, how many tokens it consumed, and what it cost. Without observability, your AI system is a black box. You cannot improve what you cannot measure, and you cannot debug what you cannot see. LangFuse gives you the visibility to optimize quality, reduce costs, and catch problems before users report them."}},{"@type":"Question","name":"How does LangFuse compare to LangSmith?","acceptedAnswer":{"@type":"Answer","text":"LangSmith is LangChain's proprietary observability platform. LangFuse is open-source and framework-agnostic. LangFuse works with any LLM framework (LangChain, LlamaIndex, custom code), can be self-hosted for data privacy requirements, and has a more flexible pricing model. We work with both, but recommend LangFuse for teams that want full control over their observability data and do not want vendor lock-in to the LangChain ecosystem."}},{"@type":"Question","name":"Can you add observability to our existing AI system?","acceptedAnswer":{"@type":"Answer","text":"Yes. LangFuse integration is typically non-invasive. We add tracing decorators and callbacks to your existing code without changing the business logic. For LangChain applications, it is often a one-line change. For custom LLM code, we wrap your API calls with LangFuse tracing. The instrumentation adds minimal latency (typically under 5ms per trace) and runs asynchronously so it does not slow down your application."}},{"@type":"Question","name":"What evaluation metrics do you track?","acceptedAnswer":{"@type":"Answer","text":"We implement both automated and human evaluation metrics. Automated metrics include: retrieval precision and recall, answer relevance scoring (using LLM-as-judge), factual faithfulness, response latency percentiles (p50, p95, p99), token usage and cost per request, and error rates. Human evaluation metrics include: annotation accuracy, user satisfaction signals (thumbs up/down, explicit feedback), and escalation rates. We customize the metric set based on your specific use case."}},{"@type":"Question","name":"How do you handle observability for multi-agent systems?","acceptedAnswer":{"@type":"Answer","text":"Multi-agent systems need hierarchical tracing. We structure LangFuse traces so each agent interaction is a span within a parent trace, showing the full workflow: which agent was invoked, what tools it used, what decisions it made, and how long each step took. This lets you debug a complex multi-agent workflow by drilling down from the top-level request to any individual agent action."}},{"@type":"Question","name":"What does AI cost optimization look like in practice?","acceptedAnswer":{"@type":"Answer","text":"We start by instrumenting every LLM call with cost tracking. Then we analyze the data to find optimization opportunities: requests that use GPT-4 but could use GPT-3.5, prompts that include unnecessary context tokens, repeated queries that could be cached, and retrieval calls that return irrelevant results. We implement model routing (cheap models for simple tasks, expensive models for complex ones), semantic caching, and prompt compression. Typical savings are 40-60% with no quality degradation."}},{"@type":"Question","name":"Can LangFuse be self-hosted for data privacy?","acceptedAnswer":{"@type":"Answer","text":"Yes. LangFuse is fully open-source and can be self-hosted on your own infrastructure. We deploy LangFuse on AWS, GCP, or on-premise environments with PostgreSQL and ClickHouse backends. Self-hosting means your traces, prompts, and evaluation data never leave your network, which is essential for healthcare, financial services, and other regulated industries."}}]}
```
