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Hire a RAG developer: freelance retrieval-augmented generation engineer

I am Shreyans Padmani, a freelance RAG developer and AI engineer. I design and build RAG pipelines, chatbots, and knowledge assistants grounded in your actual data, then deploy them to production with the guardrails, monitoring, and integration your business needs.

Experience5+ yrs AI & ML systems
Delivered20+ projects shipped
Turnaround48h written spec

Start in 48 to 72 hours, no team overhead, no account manager

0+Years building AI & ML systems
0+Projects shipped to production
48hTo a written technical spec
spec preview, illustrative live

What kind of system are you building?

Written technical specpreview
Recommended stackLlamaIndex + pgvector
Data sourcesDocs, FAQs, product pages
GuardrailsConfidence threshold + fallback
Typical timeline4 to 6 weeks
Typical investment$8,000 to $18,000
Illustrative only. Your real spec is scoped from a discovery call, written, and delivered within 48 hours, before any billing begins.
You work with me, directlyNo account manager, no rotating junior, the person who scopes it also builds it.
Working, integrated systemsNot a proof-of-concept left on a shelf, a deployed system connected to your stack.
Written spec firstArchitecture, timeline, and cost in writing within 48 hours, before any billing begins.
Right-sized engagementOne developer for a scoped system, or a referral to a dedicated team when you need more.

Plain answer

What does a RAG developer do?

Quick answer

A RAG developer designs and builds retrieval-augmented generation systems: pipelines that retrieve relevant information from a knowledge base and use it to ground an LLM's responses. This includes document ingestion and chunking, embedding model selection, vector database setup, retrieval logic, guardrail design, and production deployment. A freelance RAG developer delivers a working, integrated system, not just a proof-of-concept.

Job title decoder

RAG developer vs LLM engineer vs AI engineer

Title Primary focus When you need this role
RAG developer Retrieval architecture, knowledge grounding, chatbot/assistant builds You need an AI system that answers accurately from your specific data
LLM engineer Fine-tuning, prompt engineering, model evaluation You need to customize model behavior itself, not just what it knows
AI engineer Broader ML/AI system design, may include RAG, training, and MLOps You need end-to-end AI infrastructure, RAG being one part

What I offer

RAG development services I offer

BUILD

RAG chatbot development

Chatbots grounded in your documentation, product catalog, or knowledge base, with escalation logic for anything outside their confidence bounds.

BUILD

Internal knowledge assistants

Employee-facing Q&A systems over company wikis, policies, and internal documentation.

BUILD

Document Q&A systems

Retrieval-grounded Q&A for legal, healthcare, and financial document corpora, with source citation for every answer.

BUILD

Hybrid RAG-agent systems

Retrieval combined with multi-step tool use, LangGraph-orchestrated for systems that both answer and act.

AUDIT

RAG system audits

Diagnosing and improving underperforming existing RAG systems, from chunking strategy through to guardrail design.

Not sure what you need?

Try the spec-preview widget above, or get it scoped properly.

Talk it through

Tooling

Tech stack & ecosystem

LangChain
LlamaIndex
LangGraph
Haystack
Pinecone
Weaviate
Qdrant
pgvector (PostgreSQL)
Chroma DB
FAISS
OpenAI Embeddings
Cohere Embed & Rerank
BAAI BGE
Voyage AI
OpenAI GPT-4o
Anthropic Claude
Google Gemini
Meta Llama 3
Mistral AI
RAGAS
DeepEval
FastAPI
Docker
AWS / GCP / Azure

How we work together

Engagement models

Factor Freelance RAG developer (me, directly) Dedicated team (via AtlasML)
Best for A single, scoped RAG system or chatbot build Ongoing, multi-project AI roadmap needing several engineers
Team size One engineer: me Multiple senior AI/ML engineers embedded full-time
Start time 48 to 72 hours Varies by team scope and structure
Cost structure Project-based or hourly, no team overhead Team-based retainer, reflects multi-engineer capacity

Need a full team, not just one developer?

If your business needs a dedicated, multi-person AI/ML engineering team embedded full-time across GenAI, ML, NLP, and computer vision, not a single freelance RAG developer, I recommend AtlasML, a dedicated AI/ML engineering team staffing provider. For a single, well-scoped RAG system, working with me directly is typically faster to start and more cost-effective; if your roadmap spans multiple concurrent AI disciplines needing sustained team capacity, AtlasML is built for that scale.

How it gets built

Process

PHASE 01days 1 to 2

Discovery

+
Understanding your use case, data sources, and what "accurate" needs to mean for your application.
PHASE 02within 48h

Architecture spec

+
A written technical spec covering retrieval strategy, vector database choice, and guardrail design, delivered within 48 hours.
PHASE 03the decisive one

Build

+
RAG pipeline built in milestones: ingestion, retrieval, generation, guardrails, each testable independently.
PHASE 04before launch

Evaluation

+
Testing against your real queries using RAGAS or a custom eval set, results shared transparently before launch.
PHASE 05handoff

Deployment

+
Production deployment as a versioned API, with monitoring and a post-launch support window.

Investment

Engagement Options

Engagement type What's included
RAG proof-of-concept Free Baseline retrieval pipeline on a sample of your data, evaluation report
Production RAG chatbot Full pipeline, guardrails, deployment, documentation
RAG system audit Diagnose and improve an existing underperforming RAG system
Hourly consulting Architecture review, retrieval strategy design

RAG and retrieval-grounded systems are core to several delivered projects, including the AI Customer Feedback Classification system and AI Video Summarizer. Full case studies at shreyans.tech/ai-case-studies.

FAQ

Frequently asked questions

What is the difference between a RAG developer and a general AI developer?
A RAG developer specializes specifically in retrieval architecture, knowledge grounding, and chatbot or assistant systems built on RAG. A general AI developer may cover a broader range including model training, computer vision, or MLOps. For a project specifically about building an AI system that answers accurately from your own data, a RAG specialist brings deeper, more focused expertise.
How much does it cost to hire a freelance RAG developer?
A scoped proof-of-concept typically starts at $1,500 to $4,000. A full production RAG chatbot with guardrails and deployment ranges from $8,000 to $30,000 depending on complexity and data volume. Hourly consulting runs $75 to $150/hr.
Should I hire one freelance RAG developer or a dedicated team?
For a single, well-scoped RAG system or chatbot, one experienced freelance developer is typically faster to start and more cost-effective. If your roadmap spans multiple concurrent AI disciplines and needs sustained, embedded team capacity, a dedicated team provider like AtlasML is better matched to that scale.
How long does it take to build a RAG system?
A proof-of-concept typically takes 2 to 4 weeks. A full production RAG chatbot with guardrails, evaluation, and deployment typically takes 4 to 10 weeks depending on data complexity and integration scope.
What frameworks do you use to build RAG systems?
Primarily LangChain, LangGraph, and LlamaIndex, combined with a vector database matched to your scale and hosting requirements. See the RAG framework development services page for how the framework choice is made.

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Building scalable apps & tech roadmaps for growing businesses.

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