hello@codexcrew.com
Mon - Fri · 9:00 AM - 6:00 PM EST
AboutPortfolioBlogContact
Start a Project
HomeServicesLLM Integration
AI Engineering

AI Features Built to
Work Reliably

Production-grade LLM integration — RAG pipelines, AI agents, prompt engineering, and the guardrails to make them behave correctly at scale.

What's included

RAG Pipelines
AI Agents
Prompt Engineering
Fine-Tuning
LLM Infrastructure
LLM Evaluation
Trusted tech stack
OpenAIAnthropicLangChainLangGraphPinecone
150+
Projects delivered
98%
On-time delivery rate
90+
Average Lighthouse score
10yr
Industry experience
4.9
Average client rating
What We Build

LLM integration capabilities

From RAG architecture to production deployment and cost optimisation — every layer of LLM engineering handled.

RAG Pipelines

Retrieval-Augmented Generation systems that ground language model outputs in your specific documents, knowledge bases, and data — reducing hallucinations and improving factual accuracy.

Vector searchEmbeddingsLangChain

AI Agents

Multi-step AI agents that use tools, search the web, query databases, and take actions — built with proper error handling and human-in-the-loop controls for production reliability.

Tool useFunction callingLangGraph

Prompt Engineering

Systematic prompt design, evaluation, and optimisation — with prompt version control, regression testing, and automated quality scoring.

Chain-of-thoughtFew-shotPrompt registry

Fine-Tuning

Domain-specific fine-tuning of open-source models (Llama, Mistral) on your proprietary data — for better accuracy, lower latency, and lower cost than large general models.

LoRAQLoRAPEFT

LLM Infrastructure

Production LLM deployment with caching, cost controls, fallback routing, and rate limit management — built to handle real production traffic.

LiteLLMRedis cachingCost monitoring

LLM Evaluation

Automated evaluation frameworks that measure LLM output quality on your specific task — so you know when a model change makes things better or worse.

RAGASLLM-as-judgeRegression testing
Our Services

Our LLM engineering services

From prompt design to production deployment — a complete LLM engineering service.

RAG Architecture

RAG Architecture & Implementation

Retrieval-Augmented Generation is the most reliable way to add LLM capabilities to products that need to reference specific documents or knowledge bases. We design and build RAG systems that are accurate, fast, and cost-efficient.

Document Processing Pipeline

Chunking strategy, metadata extraction, and embedding generation for your document corpus.

Vector Store Setup

Pinecone, Weaviate, or pgvector setup with index configuration optimised for your query patterns.

Retrieval Strategy

Hybrid search (dense + sparse), re-ranking, and contextual compression for retrieval quality.

Response Generation

Prompt engineering, context injection, and answer extraction for accurate, grounded responses.

Why CodeXCrew

What makes us different

01

Architecture-first thinking

We design the system before writing the code. Every project starts with a documented architecture review — so you never inherit hidden technical debt from short-sighted early decisions.

02

No surprises, no overruns

Fixed-scope projects come with firm estimates. Dedicated-team engagements get weekly burn reports. You always know exactly where your project stands and what it's costing.

03

Senior engineers only

We don't staff projects with juniors learning on your budget. Every engineer assigned to your project has at least 5 years of production experience in the relevant stack.

04

You own everything

Full IP ownership, source code, documentation, and infrastructure access on delivery. No vendor lock-in, no licensing fees, no dependency on us to keep your product running.

05

Design-dev in one team

Designers and engineers work together from day one — not sequentially. This eliminates the classic handoff gap where beautiful designs become impossible to build.

06

Remote-first, timezone-aligned

Our team spans multiple time zones but we align to yours. You'll have real overlap for live collaboration, not just asynchronous updates and morning surprises.

Case Studies

Work we've shipped

View All Projects
FinDashSaaS · FinTech · AI

FinDash — SME Financial Intelligence Platform

AI-powered financial intelligence platform for SMEs — aggregating bank accounts, accounting software, and POS data with natural language financial insights.

800+
SMEs onboarded in beta
76%
Weekly active usage rate
67
NPS score — top quartile B2B SaaS
View Case Study
NovaMed HealthSaaS · HealthTech

NovaMed — Telemedicine SaaS Platform

Full-stack telemedicine platform connecting patients with licensed physicians for video consultations, prescription management, and ongoing care coordination.

3,200
Patients in first 90 days
98.7%
Video call success rate
4.7/5
Patient satisfaction score
View Case Study
EduFlow LMSSaaS · EdTech

EduFlow — Online Learning Management System

Comprehensive LMS hosting 180 courses for 47,000 students — achieving a 92% course completion rate by engineering for low-bandwidth environments.

47k+
Students onboarded
92%
Course completion rate
96.3%
Video success rate on 3G
View Case Study
Technologies

Our Technology Stack

We use the best modern tools — selected per project for performance, maintainability, and scale.

React
UI library for building interactive interfaces
Primary
Next.js
Full-stack React framework with SSR/SSG
Primary
Vue.js
Progressive JavaScript framework
Expert
TypeScript
Typed JavaScript for safer, scalable code
Primary
Tailwind CSS
Utility-first CSS framework
Primary
Svelte
Compile-time reactive UI framework
Expert
Figma
Collaborative UI design tool
Tooling
JavaScript
ES2024+ with modern patterns
Foundation
FAQ

Questions we hear often

Can't find what you're looking for? Reach out directly — we're happy to answer anything.

Ask a Question
Start Your Project

Let's build your
web application

Tell us what you're building. We'll respond within one business day with a tailored plan — not a generic pitch.

Free 30-minute discovery call
Detailed project estimate within 48 hours
NDA signed before any sensitive discussion
No commitment until you're fully comfortable

Tell us about your project

We'll get back to you within one business day.

Your data is private. No spam, no third-party sharing.

You Might Also Need

Related services

AI & Machine Learning

Machine learning models, AI-powered features, and intelligent automation built for production — not just demos. We bridge the gap between research and engineering.

Learn More

Data Engineering

Reliable, scalable data ingestion, transformation, and storage infrastructure — built for the volume, velocity, and variety of data your business actually produces.

Learn More

Analytics & BI

Business intelligence and analytics platforms that answer the questions your team actually has — fast, trusted, and connected to the decisions that matter.

Learn More