The partner for developing your ideas.

I bring your idea to life. From concept to launch, without surprises

Full-stack NodeJS and Python development with cutting-edge technologies and AI to improve quality, reduce time, without inflated prices and with zero surprises.

No commitment
30-minute call

15

years of experience

50+

Satisfied Clients

150+

Completed Projects

90%

Positive Feedback

Hi, I'm Simone. Nice to meet you.

Simone Costa

Full-stack developer with 15 years of practical experience in creating custom web platforms, tailored management systems, and operational dashboards. I specialize in backend development with Node.js and Python, building scalable, secure applications optimized for managing protected access, custom roles, and paid models. For the user interface, I integrate modern existing components to ensure quality, development speed, and simple maintenance.

I have worked with startups, companies, and freelancers to transform their ideas into successful digital products. My approach combines technical skills with a strategic vision to create solutions that solve real problems.

Experience & Skills

APIs & Microservices

TypeScript, Next.js API Routes, Social Login (Google, GitHub, Auth0), JWT, Prisma, Redis

Backend for SaaS, social or 3rd party or JWT authentication, role-based policies, caching and rate limiting

AI & Automations

Python, OpenAI API, LangChain, vectorDb (pgvector), Self-Hosted RAG

AI agent orchestration (single & multi-agent) with session management; chatbots; data pipelines and document automation for knowledge workflows

DevOps & Security

Docker, GitLab CI/CD, Traefik, Let's Encrypt

Containerization, provisioning and hardening of Ubuntu servers and VPN, CI/CD, HTTPS and SSL certificates

E-commerce & Membership

Stripe, NextAuth

Headless shops, subscription plans, reserved areas

Management & Dashboards

React, Chart.js

Order management, KPI and operational dashboards

Web & Showcases

Next.js, Vercel, HTML/CSS, Tailwind

Landing pages and showcase sites for brands and portfolios

Technologies

Technologies I use

Every tool is chosen for its reliability, performance, and ability to integrate into complex solutions

Node.js & Python

Robust languages for APIs, backend, automations, and data workflows.

PostgreSQL / Supabase

Reliable data, secure access, and native authentication.

Ready-to-use AI

I use AI where needed: analysis, generation, semantics. Integrable on-cloud or on-premise.

Next.js & React

Modern and fast UIs for a fluid UX on every device.

Docker & Secure VPS

Private and customized hosting, VPN, and replicable environments.

Scalability & Performance

Architectures designed to grow with your business, ensuring speed and reliability.

Solutions

Solutions I can build for you

Focus on concrete benefits for your business, not just technology.

Custom E-commerce with Stripe

Sell products, services, or subscriptions. Tailored development, smooth payment flows, full integration with your business.

Checkout Stripe

Automations and analysis with Python and AI

Scattered data, manual or repetitive processes? I transform them into intelligent automations that save you time and money.

Tailored digital solutions

Every need is different: I create custom tools, integrations, or apps that truly adapt to your way of working.

Web apps with reserved access and protected content

Platforms for courses, memberships, reserved areas, or internal portals. Controlled access, payments, secure links, and scalability.

Restricted Area
Artificial Intelligence

AI is not the solution. It's a tool for better results in less time.

AI, integrated judiciously, reduces time and costs while elevating the quality of the final result. I apply it strategically only where it's truly needed, avoiding unnecessary complexity: more value, less waste.


The goal is not to propose 'AI packages', but to develop real solutions enhanced by artificial intelligence to accelerate your processes and give you a real competitive advantage.

  • AI-Enhanced Features. I enhance your applications with AI for targeted automations, deeper analysis, and more intuitive and effective user interfaces.
  • Accelerated Development and Management. I automate repetitive tasks and complex processes through AI, drastically reducing project development and management times.
  • Efficiency and Competitive Advantage. I implement targeted AI solutions that optimize processes, increase operational efficiency, and guarantee you a measurable competitive advantage.
AI error process

Ready to turn your idea into reality?

Book a free call to discuss your project and discover how I can help you achieve it. Choose the best time for you

No commitment
30-minute call