Available for freelance · Tokyo, Japan

Backend &
Fullstack
Engineer.

I build production-grade SaaS systems — from database schema to cloud deployment. Specialised in Go backends, distributed architectures, and AWS infrastructure. Currently freelancing for INSEAD and shipping my own SaaS from scratch.

Go (Gin) PostgreSQL AWS Terraform React TypeScript Node.js Docker GitHub Actions SQS / SNS REST APIs Multi-tenant SaaS Go (Gin) PostgreSQL AWS Terraform React TypeScript Node.js Docker GitHub Actions SQS / SNS REST APIs Multi-tenant SaaS
01

Projects

Creative Marketplace SaaS
In Development

Built from scratch — a platform connecting creatives with brands and agencies. Full ownership: system design, API contracts, DB schema, cloud infra, and deployment. The kind of project that forces you to make every architectural decision count.

  • Go (Gin) backend — REST APIs, JWT auth, middleware chains, RBAC
  • Multi-tenant architecture with fine-grained permissions and scalable data models
  • Async job processing via AWS SQS/SNS — notifications, background tasks, retries
  • Terraform IaC + GitHub Actions CI/CD with staged deployments and automated testing
  • React/TypeScript frontend with full API integration
  • Observability from day one — structured logging, CloudWatch, error tracking
Go Gin PostgreSQL React TypeScript AWS SQS/SNS Terraform GitHub Actions
INSEAD Academic Platform
Production

Backend services for one of the world's top business schools. Production system with real users, real SLA expectations, and zero tolerance for downtime.

  • Go + Gin — REST APIs serving academic platforms at scale
  • Role-based access control and JWT authentication for multi-role user management
  • Multi-tenant data architecture with clean separation of concerns
  • Full AWS infrastructure — EC2, RDS, S3 — with automated CI/CD pipelines
  • PostgreSQL data models with migrations, optimised queries, and connection pooling
Go Gin PostgreSQL AWS EC2/RDS/S3 JWT / RBAC CI/CD
COMBOS — Real Estate Document Management
Production · Atixis

SaaS platform for real estate asset management — centralised document storage, real-time collaboration, and electronic validation workflows. Used by construction and real estate firms to manage all project documentation in one place.

  • GED (Electronic Document Management) — multi-level workspace architecture (company → workspace → project) with customisable folder trees and OFFICE/DWG file preview
  • Electronic visa/signature workflow — circuit de validation, naming conventions, version history, and granular access rights per folder
  • Real-time collaboration — action tracking board with customisable columns, Excel export with auto-translation, and version history
  • Fine-grained role-based access control at every level of the hierarchy
Node.js TypeScript PostgreSQL REST APIs RBAC Real-time AWS
KAZAP — ERP for Service Companies
Production · Atixis

Full ERP SaaS designed for service businesses — combining real business data with forward simulations to give directors a complete view of their company: current performance, revenue forecasts, team planning, and billing.

  • Multi-entity architecture — manage multiple companies and teams globally, merge financial data across entities for consolidated reporting
  • Billing module — invoice generation, payment tracking, overdue follow-ups with automated reminders
  • Simulation engine — project future revenue, anticipate hiring needs, model scenarios alongside real data
  • Integrated CRM, HR, and project management modules with modulable role-based permissions per department
  • Internal subcontracting & task distribution system between entities and teams within a group
Node.js TypeScript PostgreSQL REST APIs Multi-tenant RBAC AWS Docker
LVMH — Energy Management Platform
Production · Atixis × LVMH

Web application built for the LVMH Group to track and manage energy consumption across their real estate portfolio. Enables centralised monitoring of energy expenditure per building, with reporting and analytics for sustainability teams.

  • Centralised energy consumption tracking across LVMH's building portfolio
  • Reporting dashboards for sustainability and facilities management teams
  • Built to the quality and reliability standards expected by a global luxury group
Node.js TypeScript PostgreSQL REST APIs Dashboard AWS
02

Creative Dev

Photographer Portfolio — Immersive Gallery
Client · Creative

Immersive online portfolio for a professional photographer — built to make images feel like an experience, not a grid. Every interaction was designed to let the photography breathe and command attention.

  • Three.js + WebGL — 3D scene rendering with custom shaders for image transitions and depth effects
  • GSAP — orchestrated animation timelines for cinematic page transitions and scroll-driven reveals
  • Canvas API — custom generative effects and real-time image manipulation
  • Advanced CSS animations — fluid micro-interactions, magnetic cursor, smooth gallery navigation
  • Performance-optimised for large high-res images — lazy loading, texture management, 60fps target
Three.js WebGL Canvas GSAP CSS Animations JavaScript
03

Experience

Freelance Backend Engineer — INSEAD + Own SaaS
Jan 2025 – Present · Remote / Tokyo

Building and maintaining Go backend services for INSEAD, while in parallel shipping my own SaaS marketplace from zero. Sole engineer across the full stack: system design, API contracts, DB schema, cloud infra, and deployment.

GoPostgreSQLAWS TerraformReactSQS/SNS
Software Engineer — Atixis
Jan 2022 – Jan 2025 · France

Designed and maintained production backend services in Node.js / TypeScript, handling high-throughput API traffic. Built event-driven workflows, owned AWS infrastructure, led code reviews and contributed to engineering culture.

Node.jsTypeScript AWSPostgreSQLDocker
Full-Stack Developer — Captag (Apprenticeship)
Sep 2020 – Jul 2021 · France

Built responsive web applications, contributed to scalable API design and cross-functional delivery.

Full-stackREST APIsWeb
04

Skills

Backend
Go (Gin)
Node.js · TypeScript
Python
REST API design
gRPC
Databases
PostgreSQL
DynamoDB · MySQL
MongoDB · Redis
Schema design
Query optimisation
Cloud & Infra
AWS (EC2, S3, RDS)
SQS · SNS · Lambda
CloudWatch
Terraform
Docker
Architecture
Event-driven systems
Distributed services
Multi-tenant SaaS
Fault-tolerant design
Microservices
Frontend
React · Next.js
TypeScript
REST API integration
CI/CD-ready builds
DevOps
GitHub Actions
CI/CD pipelines
Linux
Staged deployments
Automated testing
Let's work
together.

Available for freelance projects and full-time roles · Tokyo, Japan

majid.eltayeb@outlook.fr