Available for work

Abderrahmen
Brinis

Full-Stack & AI Engineer — LLM Platforms, Workflow Automation & Payments

Full-Stack & AI Engineer. 9+ years, 50+ projects. Built and run my own multi-model AI platform — 1470+ users in 40+ countries. LLM orchestration, workflow automation, payments. React, Next.js, Node.js, PostgreSQL.

Open to relocation (preferred) · Remote welcome

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About

Nine years of shipping.

Full-stack and AI engineer with 9+ years of production experience. I designed, built and run my own multi-model AI platform (GPT, Claude, Gemini, Grok, DeepSeek) serving 1470+ users in 40+ countries — provider routing, usage metering, subscription billing and payments, OAuth and a real-time admin dashboard. I also built Pagol AI, a self-hosted workflow-automation engine in the n8n / Zapier class whose recursive kernel runs 100+ user-generated APIs in a single call. Hands-on with LLM orchestration, RAG-style document-grounded assistants and automation pipelines, on a React/Next.js, Node.js and PostgreSQL/MongoDB stack. Computer engineering graduate of ISSAT Sousse.

Engineering Degree in Computer Science
ISSAT Sousse · 2012–2017
Languages
Arabic (C2) · English (C1) · French (B2 (TEF certified))
Mobility
Open to relocation (preferred) — I want the full experience of an on-site work environment. Remote roles equally welcome.
Ways of working
Happiest inside a team — I have architected and shipped whole platforms alone, and I would rather build alongside other engineers than be the only one holding the design.
Full-Stack Development & System ArchitectureLLM Orchestration & Multi-Model AI IntegrationWorkflow Automation & Orchestration Engines (built an n8n/Zapier-class platform, kernel included)Payment Gateway Integration, Subscription Billing & E-CommerceAuthentication & Security Implementation (OAuth, JWT)Database Design & Optimization (PostgreSQL, MySQL, MongoDB)Server-Side Rendering & Performance OptimizationBlockchain Development & Smart Contract Design
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Global users served
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Years of experience
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Projects delivered
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Technologies mastered
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Countries reached
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National tech awards
Experience

From first commit to owning the architecture.

12 roles across backend, platform and AI engineering — with the game and XR years that built the fundamentals. Click any entry to expand it.

Earlier roles

Technical Team Leader · TiContenu
August 2019 — December 2019
Junior Software Engineer & Database Administrator · Leymax Technology & MindMaze
July 2017 — July 2018
Junior Software Developer · Swiss Progress
June 2017 — June 2018
Software Engineering Trainer (OOP) · ISSAT Sousse
2019
Graduation internship (PFE) — software developer · Mad Cat
February — July 2017
Summer internship — software developer · Envast Tunisia
June — July 2016
Projects

44 things I built and shipped.

AI platforms, workflow engines, payment and ledger systems, production e-commerce and blockchain — plus the AR/VR years that built the fundamentals. Every card says what my part actually was.

AIWeb PlatformsTools & Automation
2025 — Present

Multi-model AI Platform★

Independent

Full-featured multi-model AI chat platform with authentication, subscriptions, referrals and a real-time admin dashboard. Serves 1470+ global users across a web app, a chat app and a public API.

Founding Full-Stack Engineer & ArchitectSolo, end to end
ArchitectureBackendFrontendDevOps / hosting

Sole engineer — idea, architecture, backend, frontend and VPS hosting through to production.

ReactNode.jsExpressPostgreSQL+3
FintechMobile AppsWeb PlatformsAI
2026

ALI Money (Alicent) — Mobile Money Wallet★

Client — Niger (XOF)

Mobile money wallet for Niger (XOF): Flutter Android/iOS app over a server-side double-entry ledger, with an AI-first KYC decisioning layer, maker–checker admin console and WhatsApp confirmation codes.

Lead Engineer & Software ArchitectLeading the team
ArchitectureMobileBackendFrontendDevOps / hostingai

Architected and built the full stack — Flutter app, Fastify ledger API, Next.js admin console and the WhatsApp sender — plus the deployment.

FlutterDartAndroidiOS+12
Blockchain & Web3AITools & Automation
2023 — Present

Automated Cryptocurrency Trading Bot★

Independent

Algorithmic multi-account trading system with analytics dashboard — 26 accounts for 18 users, $20,000+ in managed assets, profitable across 2+ years of live bull and bear cycles with zero security incidents.

Full-Stack Engineer & ArchitectSolo, end to end
ArchitectureBackendFrontendDevOps / hosting

Sole engineer — trading engine, analytics dashboard and the servers it runs on.

Node.jsExpressPostgreSQLGate.io SDK+3
Visit
AITools & AutomationWeb Platforms
2023 — 2024

Pagol AI★

Client

Self-hosted workflow-automation platform in the n8n / Zapier / Make class, with a recursive API consumption system at its kernel: a single API call can execute 100+ interconnected user-generated APIs as one graph, with reward calculations propagating across 10 levels. Ships with an autonomous AI content engine that has published 20,000+ blog posts since 2023.

Full-Stack DeveloperSolo, end to end
ArchitectureBackendFrontend

Sole developer for the client — recursive API engine and the content pipeline around it.

Node.jsNunjucksMongoDBLLM APIs+4
Visit
AIWeb Platforms
2025

Nahla Real Estate Platform★

Client

AI-powered real estate platform where AI assistants help buyers make informed decisions, grounded on an admin-managed corpus of property articles.

Full-Stack DeveloperSolo, end to end
ArchitectureBackendFrontendDevOps / hosting

Sole developer — AI assistants, admin corpus and deployment.

Node.jsExpressEJSAI Integration
Blockchain & Web3Web Platforms
2024

Kumit Web Platform★

Client

Blockchain-integrated web platform with deposit and withdrawal flows backed by complex Solidity smart contracts using inter-contract communication patterns.

Full-Stack & Smart-Contract DeveloperSolo, end to end
ArchitectureBackendFrontend

Sole developer — Solidity contracts plus the platform that talks to them.

Node.jsExpressSolidityWeb3.js+1
GamingMobile
2021 — 2022

SpongeBob's Idle Adventures★

Sparklingbit / Kongregate for Nickelodeon

Licensed Nickelodeon idle game shipped on mobile as part of the Kongregate publishing project.

Unity IntegratorIn a team
Game devIntegrations

Unity integrator on the Sparklingbit team for a Kongregate/Nickelodeon release.

UnityC#iOSAndroid
VRGaming
2020 — 2021

NEON BEAT VR — Hand-Tracking Rhythm Game★

Lanterns Studios

Beat Saber-style rhythm game for Oculus Quest played entirely with hand tracking — no controllers.

AR/VR Team LeaderLeading the team
Game devAR / VR

Led the XR side at Lanterns Studios — hand-tracking interaction and gameplay.

UnityC#Oculus QuestHand Tracking
Visit
E-CommerceWeb Platforms
2025

TazMall★

Independent

Multi-vendor Tunisian marketplace for handmade and artisanal products, with verified local sellers, nationwide home delivery and cash-on-delivery payment.

Full-Stack Engineer & ArchitectSolo, end to end
ArchitectureBackendFrontendDevOps / hosting

Sole engineer — marketplace, seller verification, delivery and payment flows, plus hosting.

Next.jsReactMongoDBPayment Integration+1
Visit
Skills

The toolkit.

Proficiency reflects production use, not tutorials — every number here is backed by shipped work.

Frontend Development

React.js92
Next.js88
SvelteKit75
TypeScript85
JavaScript (ES6+)95
Tailwind CSS90
HTML5 / CSS395
Responsive Design & PWA90
Framer Motion & UI Animation88
Vue 3 / Nuxt60
Angular50
React Native / Flutter58

Backend Development

Node.js95
Express.js95
PHP85
RESTful API Design93
Microservices Architecture78
Server-Side Rendering (EJS, Nunjucks)90
Python72
NestJS65
FastAPI / Django REST62
Laravel65
GraphQL / Apollo62
Kafka / RabbitMQ / BullMQ58
Go / Java (Spring Boot)45
Fastify82
Zod / Runtime Schema Validation85

Databases & Storage

PostgreSQL90
MySQL / MariaDB92
MongoDB85
Firebase Realtime DB88
Oracle DB65
Query Optimization & Connection Pooling88
Redis70
Prisma / Drizzle ORM65
Elasticsearch / OpenSearch55
Double-Entry Ledger Design & Idempotency85
MongoDB Atlas & DB-Enforced Audit Trails85

Blockchain & Web3

Solidity85
Smart Contracts & Inter-Contract Communication85
Web3.js88
DApps85
NFT Integration82
MetaMask Integration88
CCXT / Gate.io SDK85

AI & Machine Learning

Multi-Model AI Integration (GPT, Claude, Gemini, DeepSeek)93
AI API Deployment & Orchestration90
Prompt Engineering & AI Content Generation88
Retrieval-Grounded Assistants (document corpora)80
Natural Language Processing75
Machine Learning fundamentals70
pgvector / Pinecone / LangChain70
AI-Assisted / Agentic Development (Claude Code)92
LLM Document Pipelines (job-post parsing, scoring, CV generation)88
AI-Assisted KYC / Document Decisioning82

Workflow Automation & Orchestration

n8n / Zapier / Make-class Workflow Engines (built one)90
Recursive API Composition (100+ APIs in one call)95
Node-Graph Execution Kernels & DAG Resolution88
Webhook & Event-Driven Integration90
Connector / Third-Party API Integration92
Scheduled Jobs, Cron Pipelines & Retries88
Autonomous Content & Data Pipelines (20,000+ published runs)90

Mobile Development

Flutter / Dart85
Android Native Tooling (Gradle, adb, emulator debugging)85
iOS Builds & Xcode (simulator, signing, workspace)75
Mobile Performance & Low-End Device Optimization88
Biometric & PIN Authentication (local_auth, secure storage)82
Deep Links & App Link Handling80
QR Generation & Camera Scanning85
Mobile Release & Store Deployment (APK/IPA, signing)85

DevOps & Tooling

Git / GitHub93
Docker78
CI/CD Pipelines80
Cloud (Render, Vercel, Hostinger)85
UML Design90
Linux / Ubuntu82
Kubernetes / Helm55
Terraform / Ansible (IaC)52
AWS (EC2, S3, Lambda, RDS)58
Playwright / Jest / Vitest68
VPS Administration & Server Provisioning (Hostinger, Linux)85
Web Server Configuration (Nginx, Apache, reverse proxy)80
Domain, DNS & SSL Management (records, Certbot/Let’s Encrypt)85
Process Management & Zero-Downtime Deploys (PM2, systemd)82
Email DNS & Deliverability (MX, SPF, DKIM, DMARC)78

Security & Authentication

OAuth 2.090
JWT & Session Management90
Cross-Domain Cookies85
XSS & SQL Injection Prevention88
Role-Based Access Control90
Maker–Checker Approval & Segregation of Duties85
Session & Device Management with Revocation85

Leadership & Process

Team Leadership & Mentoring90
Project Estimation & Scoping88
Agile Delivery85
Resource Management82
Technical Training & Teaching90
Client Communication & Consulting88

Additional Technologies

Socket.io / WebSockets88
Payment Gateways (Click to Pay, MyFatoorah, ForumPay)88
WordPress75
Email Marketing & Bulk Senders82
PDF & DOCX Generation (Puppeteer, docx)85
Web Scraping82
Chart.js / Data Visualization82
WhatsApp API Integration80
Technical SEO & Core Web Vitals85
Google APIs (Drive, Maps, Sheets)75
Fintech & Mobile Money Domain (XOF/UEMOA rails, compliance)80

Game Development & XR

Unity3D (C#)95
C#93
Photon PUN 1 / PUN 290
Firebase-based turn-by-turn multiplayer90
Matchmaking, Tournament & Friends Systems88
ARCore90
ARKit80
Vuforia93
Oculus Quest 1/2 & Hand Tracking88
Unreal Engine 465
CPU/GPU/Memory/Build-size Optimization (APK/IPA)90
iOS & Android Store Deployment88
WebGL & Cross-Platform Unity Builds85

Awards

  • Best Technology Award — Carthage Game Show, 2017
  • Game of the Year Award — Carthage Game Show, 2017
  • Best Technology Award — Tunisian Game Awards, 2016

Languages

  • ArabicNative
  • EnglishFluent — Professional working proficiency
  • FrenchFluent — Professional working proficiency

Test d'Évaluation de Français (TEF) — Canada, level B2

Contact

Let's build something.

Available for senior full-time roles in full-stack and AI engineering — on-site with relocation, or remote — and for consulting projects.

EmailbrinisAbderrahmen93@gmail.comWhatsApp — fastest reply+216 25 420 749
LocationTunis, Tunisia · Africa/Tunis (UTC+1)
Availability

Open to relocation (preferred) — I want the full experience of an on-site work environment. Remote roles equally welcome.

Elsewhere
PortfolioGitHubLinkedInWhatsAppBlogUdemy

What I can take on

Artificial Intelligence
LLM integration, chatbots and assistants, workflow automation and intelligent agents
Software Development
Web applications, marketplaces and web platform engineering
E-Commerce & Marketplaces
Full-stack stores and multi-vendor marketplaces with AI recommendations
Web Development
E-commerce sites, showcase sites and WordPress, with maintenance included
Mobile App Development
Android & iOS applications
SEO & Performance
Technical SEO and search ranking optimisation
UI/UX Design
UX/UI design, graphic design, logos, brand guidelines and brochures
Support & Maintenance
Ongoing updates and product evolution after launch
Send me an email