Sebastian Constantin
Co-founder · Full-Stack & AI
A full-stack developer who owns products end to end, at home across the whole stack and whatever technologies a project uses. He also builds AI features when a project needs them.
Full-StackAI/ML
About us
Three senior developers. No layers in between.
Gilded Code is deliberately small: three senior full-stack developers who take products from the first sketch to production and stay for the long run. You talk to the people writing the code, so decisions are fast, quality is personal, and nothing gets lost in hand-offs.
How we work
- A fixed price and a clear plan before any work starts — no open-ended billable hours.
- Weekly demos of a working build, so you watch your product take shape instead of waiting on trust.
- Everything we build is yours: source code, design, accounts, and infrastructure. The handover is stated in the contract.
- We stay after launch — maintenance, monitoring, and continuous improvement with guaranteed response times.
The team
Three founders
You work directly with the people building your product, with no middle layer. Clear communication, fast decisions and real attention to detail.
Denis Mateescu
Co-founder · Full-Stack & AI
A full-stack developer focused on building complete, dependable web applications, from the database through to the interface. He works confidently with a wide range of technologies and is equally at home with AI and machine learning when a project requires it.
Full-StackAI/ML
Adrian Ciu
Co-founder · AI Full-Stack Engineer
An AI full-stack engineer equally at home building web applications and the machine-learning systems behind them — from LLM features and RAG pipelines to the APIs and interfaces that put them in users' hands.
Full-StackAI/ML
How we work
From blank repo to production
A simple, transparent process with fixed milestones and weekly demos — you can watch it come together live as your product takes shape.
01
Discover
We pin down goals, scope, and architecture, then give you a clear plan, timeline, and fixed milestones.
02
Design
UX flows, a reusable design system, and clickable prototypes so we validate the experience before writing features.
03
Build
Iterative delivery with weekly demos. You always have a working build and a direct line to the developers building it.
04
Ship & Scale
Automated deploys, monitoring, performance tuning, and ongoing support as the product grows.
The stack
We use the same technologies as the products you use every day (Next.js, React, Node, AWS) — so your site is fast today and easy to grow tomorrow.
Frontend
Next.js
React
React Native
TypeScript
Tailwind CSS
Backend & APIs
Node.js
Python
Go
Laravel
Java
Spring Boot
GraphQL
AI / ML
OpenAI
LangChain
PyTorch
Hugging Face
Data & Cloud
PostgreSQL
Redis
Docker
Kubernetes
AWS
Google Cloud
Security & AuthSecurity-first
Keycloak
OAuth 2.0 / OIDC
JWT
SSO
LET'S TALK
Have a project in mind?
Tell us what you're building. We reply within one business day — usually with questions that sharpen the idea.
Prefer a call?
Book a 30-min call