Full Stack Engineer, Langchain & RAG

The Guitar Center Company; Westlake Village (CA); Hybrid; USD 100,000 - 160,000; Full time

Job summary

Join a forward-thinking company as a Cloud Full Stack Engineer, where your passion for music and technology will thrive. In this exciting role, you'll design and develop scalable APIs, integrate cutting-edge AI technologies, and collaborate with cross-functional teams to create innovative solutions. With a focus on cloud-native technologies and modern AI integrations, you'll play a crucial role in shaping the future of music retail. Enjoy a hybrid work environment, competitive salary, and a range of benefits designed to support your well-being and career growth. If you're ready to make an impact, this opportunity is for you!

Benefits

Medical insurance

Dental insurance

Vision insurance

401(k) with company match

Mental health support

Paid sick leave

Paid holiday

Paid vacation

Employee discount program

Tuition reimbursement

Qualifications

• Proficiency in Java and Node.js for backend development.
• Strong UI development skills with React or Vue.js.
• Experience integrating and orchestrating LLMs in production environments.

Responsibilities

• Design, develop, and deploy scalable APIs and microservices using Node.js and Java.
• Integrate and orchestrate multiple LLMs using structured prompt pipelines.
• Implement monitoring and performance dashboards using various tools.

Skills

Java

Node.js

React

Vue.js

Large Language Models (LLMs)

Model Context Protocol (MCP)

Cloud Services (OCI, AWS, GCP)

Docker

Kubernetes

SQL/NoSQL Databases

Education

Bachelor's Degree in Computer Science or related field

Tools

Datadog

Splunk

Dynatrace

Sumo Logic

Kafka

Job description

The Guitar Center Company provided pay range

This range is provided by The Guitar Center Company. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

$100,000.00/yr - $160,000.00/yr

Important: This role will be onsite out of our Westlake Village, CA corporate offices on a hybrid Tuesday through Thursday basis.

About Guitar Center:

At Guitar Center, we are driven by a shared passion for music and technology. We support over 300 stores nationwide and a growing network of shared services facilities. Our team is critical in ensuring our business runs smoothly and our customers and associates stay connected to what matters most.

About the Role:

We are looking for a highly skilled Cloud Full Stack Engineer with deep experience across cloud-native technologies, distributed systems, and modern AI integrations. The ideal candidate has worked with Large Language Models (LLMs) and is familiar with the Model Context Protocol (MCP)—a protocol used to manage and route contextual interactions across multiple LLMs. This role is ideal for someone who thrives at the intersection of backend engineering, cloud infrastructure, and applied AI/ML systems.

Responsibilities:

Application & API Development:

• Design, develop, and deploy scalable APIs and microservices using Node.js and Java.
• Build front-end interfaces and tooling using React or Vue.js for LLM-driven user experiences.
• Develop and optimize interactions with both SQL (Oracle, MySQL, MS SQL) and NoSQL (MongoDB, DynamoDB, Cassandra, ElasticSearch) databases.

LLM Integration & MCP Implementation:

• Integrate and orchestrate multiple LLMs (e.g., OpenAI, Claude, LLaMA, Mistral) using structured prompt pipelines and standard interfaces.
• Apply the Model Context Protocol (MCP) to standardize how models consume prompts, context, metadata, and fallback instructions.
• Build intelligent context routers and session managers for dynamic model selection and prompt enrichment.
• Collaborate with ML and platform teams to scale inference pipelines and maintain governance across models.
• Deploy applications and LLM services on OCI, AWS, and Google Cloud Platform.
• Use Docker and Kubernetes to orchestrate containerized services and scale LLM workloads.
• Build CI/CD pipelines and automate multi-cloud infrastructure provisioning.

Monitoring, Messaging, and Observability:

• Implement monitoring and performance dashboards using Datadog, Splunk, Dynatrace, or Sumo Logic.
• Architect event-driven systems using Kafka, SNS, SQS, or Tibco for asynchronous messaging.

Testing and Quality:

• Write and maintain test suites using JUnit, Mockito, Rest Assured, and other tools.
• Perform load testing and performance tuning for both web services and LLM endpoints.

To join our band, you'll need the following experience:

• Proficiency in Java and Node.js for backend development.
• Strong UI development skills with React or Vue.js.
• Experience integrating and orchestrating LLMs in production environments.
• Working knowledge of MCP (Model Context Protocol) or similar structured model communication patterns.
• Expertise in cloud services across OCI, AWS, and GCP.
• Strong experience with Docker, Kubernetes, and cloud-native deployment patterns.
• Familiarity with both SQL and NoSQL databases.
• Understanding of secure API design, rate-limiting, and usage metering for LLM services.

Preferred Skills:

• Familiarity with LangChain, LlamaIndex, vector stores (e.g., Pinecone, Weaviate).
• Knowledge of embedding-based retrieval, context compression, and prompt tuning.
• Exposure to multi-model orchestration frameworks or gateways (e.g., OpenRouter, VLLM, LoRAs).
• Understanding of token cost optimization, model fallback strategies, and safety filters.

Core Competencies:

• Strong architectural thinking and system design skills.
• Excellent collaboration with cross-functional AI, platform, and product teams.
• Clear communicator who can document and explain complex system behavior.
• Passion for AI advancements and practical applications of LLMs

Disclaimer:

While this job description outlines primary responsibilities, it is not a comprehensive list of all tasks. Duties may change or new responsibilities may be assigned as business needs evolve.

Pay Rate: $100,000 - 160,000/yr. dependent on background and experience.

Why Guitar Center Company? Here’s just some of the rewards:

For our employees who are musicians, we offer the unique opportunity of gig leave—take time off to share your music with the world and return to your job after your tour! Guitar Center offers robust benefits and perks, including Medical, Dental, Vision, 401K plus company match, mental health support, paid sick/holiday/vacation time, employee discount program, and tuition reimbursement options.

This position is eligible to participate in the Guitar Center Company's bonus program based on the Company's performance. The job posting is not necessarily reflective of actual compensation that may be earned, nor a promise of any specific pay for any specific employee, which is always dependent on actual experience, education, and other factors. The pay range(s) listed are provided in compliance with state specific laws. Pay ranges may be different in other locations.

With a career at Guitar Center, you become part of the world's largest multichannel musical instrument retailer. Whether at our Stores, Contact Centers, Distribution Centers, or Support Center, Guitar Center employees have a common goal: to help people find their sound and fill the world with more music.

Love this gig and want to apply?

Send your resume and cover letter today, along with salary expectations!

Guitar Center is an Equal Opportunity Employer and provides fair and equal employment opportunity to all employees and applicants regardless of race, color, religion, gender, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other protected status prohibited under Federal, State, or local laws. All employment decisions are based on valid job‐related requirements.

If you are a qualified individual with a disability or a disabled veteran and are unable or limited in your ability to use or access our website, you may request a reasonable accommodation to express interest in a specific opening. You can request a reasonable accommodation by sending an email to [e-mail].

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Industries

  Retail

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Inferred from the description for this job

Medical insurance

Vision insurance

401(k)

Paid maternity leave

Paid paternity leave

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