Our Technology Stack

The Tools
We Trust

We build with modern, battle-tested technologies across every layer of the stack — chosen for performance, maintainability, and long-term reliability.

.NET Core

.NET Core

Backend

OpenAI

OpenAI

AI / ML

React

React

Frontend

PyTorch

PyTorch

AI / ML

TypeScript

TypeScript

Language

Anthropic

Anthropic

AI / ML

PostgreSQL

PostgreSQL

Database

TensorFlow

TensorFlow

AI / ML

Python

Python

AI / ML

AWS

AWS

Cloud

Hugging Face

Hugging Face

AI / ML

GraphQL

GraphQL

API

LangChain

LangChain

AI / ML

Docker

Docker

DevOps

scikit-learn

scikit-learn

AI / ML

Redis

Redis

DevOps

What We Build With

Our Technology Stack

We use battle-tested, modern technologies to build scalable, maintainable, and performant systems.

.NET Core

.NET Core

Backend

OpenAI

OpenAI

AI/ML

React

React

Frontend

PyTorch

PyTorch

AI/ML

TypeScript

TypeScript

Language

Anthropic

Anthropic

AI/ML

PostgreSQL

PostgreSQL

Database

TensorFlow

TensorFlow

AI/ML

Python

Python

AI/ML

AWS

AWS

Cloud

Hugging Face

Hugging Face

AI/ML

GraphQL

GraphQL

API

LangChain

LangChain

AI/ML

Docker

Docker

DevOps

scikit-learn

scikit-learn

AI/ML

Redis

Redis

DevOps

Deep Dive

What We Use & Why

Every tool has a purpose. Here's what each technology brings to the table on a typical FirstCode.AI project.

.NET Core

Backend

.NET Core

High-performance, cross-platform framework for building scalable APIs, microservices, and enterprise-grade background services.

  • REST & GraphQL API development
  • Background jobs & event-driven architecture
  • Microservice & monolith patterns
OpenAI

AI / ML

OpenAI

Industry-leading large language models powering intelligent features — from natural language understanding to code generation and multi-modal reasoning.

  • GPT model integration & fine-tuning
  • Embeddings for search & retrieval
  • Function calling & structured outputs
React

Frontend

React

Component-driven UI library for building fast, interactive web applications with a mature ecosystem and a strong community.

  • Single-page applications (SPA)
  • Complex dashboard & admin UIs
  • Component libraries & design systems
PyTorch

AI / ML

PyTorch

The leading open-source deep learning framework — flexible, Pythonic, and the go-to choice for research and production ML workloads.

  • Custom model training & fine-tuning
  • GPU-accelerated inference
  • Model export & deployment (TorchServe, ONNX)
TypeScript

Language

TypeScript

Strongly-typed superset of JavaScript that catches errors at compile time and scales cleanly across large, shared codebases.

  • Type-safe frontend & backend code
  • Shared types across the full stack
  • Improved developer experience & safe refactoring
Anthropic

AI / ML

Anthropic

Safety-focused AI research lab behind the Claude family of models — delivering highly capable, steerable, and reliable AI assistants.

  • Claude API integration
  • Long-context document analysis
  • Agentic workflows & tool use
PostgreSQL

Database

PostgreSQL

The world's most advanced open-source relational database — powerful, reliable, and production-proven at any scale.

  • Relational & semi-structured (JSONB) data
  • Full-text search & advanced indexing
  • High-availability & streaming replication
TensorFlow

AI / ML

TensorFlow

Google's end-to-end machine learning platform — battle-tested for training, serving, and deploying models at massive scale.

  • Production model serving (TF Serving)
  • On-device ML (TensorFlow Lite)
  • Scalable training pipelines
Python

AI / ML

Python

The de-facto language for data science and AI — with the richest ecosystem of ML frameworks and LLM integration tooling.

  • ML model training & inference
  • LLM integrations & RAG pipelines
  • Data processing, ETL & automation scripts
AWS

Cloud

AWS

The world's leading cloud platform — we use it to build scalable, resilient, and cost-optimised infrastructure for any workload.

  • Auto-scaling compute (EC2, ECS, Fargate)
  • Serverless functions (Lambda, API Gateway)
  • Managed storage, databases & global CDN
Hugging Face

AI / ML

Hugging Face

The open-source hub for state-of-the-art ML models — providing thousands of pre-trained models and a powerful Transformers library.

  • Pre-trained model fine-tuning
  • NLP, vision & audio pipelines
  • Model hosting & inference APIs
GraphQL

API

GraphQL

A flexible, strongly-typed query language for APIs that gives clients precise control over the data they request — nothing more.

  • Efficient, schema-driven data fetching
  • Strongly-typed API contracts
  • Real-time subscriptions & live data feeds
LangChain

AI / ML

LangChain

The leading framework for building LLM-powered applications — providing composable chains, agents, and retrieval-augmented generation out of the box.

  • RAG pipeline orchestration
  • Multi-step agent workflows
  • Tool integration & memory management
Docker

DevOps

Docker

Industry-standard containerisation that ensures consistent, reproducible environments from local development all the way to production.

  • Consistent dev-to-prod environments
  • Container orchestration (ECS, Kubernetes)
  • Streamlined CI/CD pipeline integration
scikit-learn

AI / ML

scikit-learn

The gold standard for classical machine learning in Python — simple, efficient, and built on NumPy and SciPy for reliable, reproducible results.

  • Classification, regression & clustering
  • Feature engineering & selection
  • Model evaluation & hyperparameter tuning
Redis

DevOps

Redis

High-performance, in-memory data store used for caching, session management, and real-time pub/sub — delivering sub-millisecond response times at scale.

  • Application caching & session storage
  • Real-time pub/sub messaging
  • Rate limiting & queue management
Our Philosophy

Why This Stack?

Technology choices have long-term consequences. Here's the thinking behind ours.

01

Battle-Tested in Production

Every technology in our stack has proven itself under real-world load and scale. We don't chase trends — we choose tools we trust to deliver when it matters.

02

Modern & Actively Maintained

Our stack is backed by large communities and dedicated maintainers. That means regular security patches, new capabilities, and long-term investment you can rely on.

03

End-to-End Coverage

From the database layer to the user interface, our technologies cover every tier of the stack — giving your team one cohesive, well-integrated toolset.

Ready to build with the best tools?

Let's talk about your project and how our stack can serve your goals.

Start Your Project