Available for new opportunities

Full Stack TypeScript Developer

I turn business challenges into solid web products.

Full Stack TypeScript Developer since 2018, specializing in Node.js, NestJS, React and Next.js. SaaS platforms, marketplaces, e-commerce, business APIs and backend architectures.

Node.jsNestJSTypeScriptReactNext.jsAWS
5.0/5

Client reviews

8 client reviews · 10 projects delivered

Seddik ZIDOUN, Full Stack TypeScript Developer

Seddik ZIDOUN

Full Stack TypeScript

Selected projects

The projects that best represent my expertise.

Projects where the challenge goes beyond the interface: backend architecture, business logic, payments, data, integrations and maintainability.

Recommandations

Ils valident aussi ma façon de travailler.

Au-delà de la stack technique : autonomie, compréhension métier, qualité du code, fiabilité et capacité à faire avancer un produit.

10 projets Codeur
100 % terminés
LinkedIn
“Autonome et impliqué, il comprend rapidement les besoins et propose des solutions techniques efficaces et durables.”

Aimene AHDIBI

Recommandation professionnelle

LinkedIn
“Rigoureux, autonome et capable de transformer des problématiques métier complexes en solutions concrètes et maintenables.”

Abdeldjallil CHERFAOUI

Recommandation professionnelle

Codeur.comXoraql
“Professionnels et efficaces, merci pour le travail bien fait.”

Client Codeur.com

Mission Xoraql

Codeur.comXoraql
“Une équipe vraiment professionnelle, je recommande vivement.”

Client Codeur.com

Mission Xoraql

LinkedIn
“Autonome et impliqué, il comprend rapidement les besoins et propose des solutions techniques efficaces et durables.”

Aimene AHDIBI

Recommandation professionnelle

LinkedIn
“Rigoureux, autonome et capable de transformer des problématiques métier complexes en solutions concrètes et maintenables.”

Abdeldjallil CHERFAOUI

Recommandation professionnelle

Codeur.comXoraql
“Professionnels et efficaces, merci pour le travail bien fait.”

Client Codeur.com

Mission Xoraql

Codeur.comXoraql
“Une équipe vraiment professionnelle, je recommande vivement.”

Client Codeur.com

Mission Xoraql

About

From business requirements to production.

Full Stack TypeScript Developer since 2018, specializing in Node.js, NestJS, React and Next.js.

I work on the design and evolution of SaaS applications, marketplaces, e-commerce platforms, business back offices and APIs.

My approach combines business understanding, code quality, maintainable architecture, third-party integrations and the delivery of genuinely useful features.

Learn more

Engineering

I don't just build interfaces.

Architecture, quality, testing, security and delivery are an integral part of how I build products.

Architecture & Design

Structure code around the business domain and keep the architecture clear as the product evolves.

DDD / domain modeling depending on the context
Modular architecture
Separation of concerns
REST API design
REST & GraphQL
Dependency injection

Quality & Testing

Reduce regressions and secure product evolution with an appropriate testing strategy.

Automated testing
Unit testing
Jest & Vitest
Playwright

Asynchronous Processing & Reliability

Decouple processing and make operations more reliable when they should not directly depend on an HTTP request.

Redis
Asynchronous jobs
Webhooks & events
Idempotency
Retry and error handling
Protection against duplicate processing

Reliability & Security

Secure access, incoming data and sensitive backend processing.

JWT
Roles & permissions
DTO validation
Error handling
Secure webhooks
Data validation

Delivery & DevOps

Create reproducible environments and make deployments more reliable.

Docker
Docker Compose
GitLab CI/CD
Git
Pull Requests
Code review

Business Backend

Build APIs that genuinely handle the product's business rules and constraints.

Node.js
NestJS
Express
PostgreSQL
MySQL
MongoDB
Third-party integrations

Experience

Build. Evolve. Make reliable.

01

RentFlow

Full Stack Developer

Designed and developed a marketplace payment flow based on NestJS, Next.js and Stripe Connect.

NestJSNext.jsTypeScriptStripeMongoDBDocker

January 2026 — June 2026

France

02

Comme des Loups

Full Stack Developer

Evolved a B2B e-commerce platform, developed business APIs, SQL reporting and external synchronizations.

Node.jsReactNext.jsTypeScriptMySQLRedis

November 2024 — December 2025

Paris

03

Interligne

Full Stack Developer

Developed and evolved a business back office for managing customers, measurements, statuses and workflows.

TypeScriptREST APIFrontendBackend

April 2025 — November 2025

Valenciennes

04

Plateforme SaaS Podcasts

Full Stack Developer

Developed a SaaS platform for podcast content classification, analysis and publishing.

ReactNode.jsExpressMongoDB

January 2025 — April 2025

Paris

05

Freelance

Independent Full Stack Developer

Designed and developed web applications, REST APIs, authentication systems, third-party integrations and application architectures.

TypeScriptNode.jsExpressMySQLMongoDB

Since 2018

France

Expertise

A modern stack for applications built to last.

Backend

Node.jsNestJSExpressTypeScriptREST APIGraphQLJWT

Frontend

ReactNext.jsTypeScriptTailwind CSS

Architecture

DDDModular architectureREST API designApache KafkaIdempotency

Quality & Testing

Automated testingJestVitestReact Testing LibraryPlaywrightUnit testingIntegration testingE2E testing

Databases

PostgreSQLMySQLMongoDBRedis

Cloud & DevOps

AWSDockerDocker ComposeGitLab CI/CDGitPull RequestsCode Review

Payments & Integrations

Stripe ConnectStripe CheckoutWebhooksThird-party APIsIdempotency

Travaillons ensemble

Vous avez un produit à construire ou à faire évoluer ?

SaaS, marketplace, application métier, e-commerce ou API backend : présentez-moi votre contexte et vos enjeux.