softfolio
Full-Stack Engineer

Sofiane Chadjaa

I build fintech, IoT, and SaaS platforms — reliable systems for products where failure isn't cheap.

33 tools & technologies

Tech Arsenal

The tools I use to build reliable, scalable systems

Node.js
TypeScript
Java
Spring Boot
React
Next.js
Docker
Kubernetes
Nginx
CI/CD
Linux
Node.js
TypeScript
Java
Spring Boot
React
Next.js
Docker
Kubernetes
Nginx
CI/CD
Linux
Jenkins
PostgreSQL
MongoDB
Redis
REST APIs
GraphQL
Microservices
Keycloak
JWT
Tailwind CSS
Redux Toolkit
Jenkins
PostgreSQL
MongoDB
Redis
REST APIs
GraphQL
Microservices
Keycloak
JWT
Tailwind CSS
Redux Toolkit
Webpack
Git
GitHub Actions
Prometheus
Grafana
MQTT
Automation
LLM APIs
Prompt Eng.
RAG Pipelines
LangChain
Webpack
Git
GitHub Actions
Prometheus
Grafana
MQTT
Automation
LLM APIs
Prompt Eng.
RAG Pipelines
LangChain

About Chadjaa Sofiane

What I do

Full-stack developer focused on fintech, real-time products, and high-reliability systems - work where mistakes are expensive.

How I work

Async-first, thorough in discovery, and comfortable flying solo or partnering with design. Most production work is under NDA, including payment platforms, IoT device control, and internal tools at scale.

What I'm looking for

Freelance and contract projects - especially new builds or scale-ups that need to be done right from day one.