Kossi Samuel Gabiam - Full-Stack & Cloud Engineer

01 / About

Building systems that scale.

I hold a Professional Master's in Information Systems Engineering (specialization: Systems, Networks & Cloud Computing) and a Bachelor's in Computer Science (specialization: Software Engineering & Information Systems) from the Faculty of Sciences of Sfax, University of Sfax - Tunisia.

I design and build full-stack web and mobile applications, architect distributed systems, and deploy cloud infrastructure. I am comfortable across the entire stack - from REST API design and backend services to modern front-end frameworks and DevOps pipelines.

3+ Years Experience

10+ Technologies

8+ Projects Delivered

02 / Experience

Where I've worked.

Full-Stack Developer

SuiSco Sarl · Lomé, Togo

June 2025 - Present

Architected and built EduBoost (eduboost.tg), a national multi-channel lottery platform (web, SMS, USSD, mobile money MIXX/VAS) - live in production in Togo with 7 apps across 3 public domains
Designed the distributed architecture: 15 Django write endpoints generating collision-free ticket codes (SERVER_ID + PostgreSQL sequence), plus 1 central node for aggregated reads, draws and corporate accounts
Implemented Celery ~500 ms sync of local tickets to central PostgreSQL, crash-recovery task (30 s), HMAC-SHA256 operator webhook verification; async web generation (request_id polling) and synchronous SMS/USSD generation (<50 ms)
Developed the corporate gifting portal Offrir: PDF generation, SMS/email OTP, secured claim flow, dual-proxy frontend routing
Built the 4-phase live draw: bijective ticket anonymisation, OTP voting (soiree.eduboost.tg), tireur selection (central admin), public draw (tirage.eduboost.tg)
Built a multi-client Quiz App (Nuxt.js / Hono.js / Deno.js); maintained SuiSco My Account (PHP Laravel); integrated centralized Keycloak SSO (OAuth2/OIDC)

Django 6 Nuxt 3 Celery PostgreSQL 17 Redis Docker Laravel Keycloak

03 / Projects

Selected work.

01

● Live in Production 7 apps 3 domains

EduBoost - La Grande Tombola pour l'Éducation

SuiSco Sarl / YAS TOGO - 2025 - Present

National lottery platform built on a multi-endpoint + one central distributed architecture. 15 Django write nodes handle purchases across three channels; one central node aggregates all tickets, runs draws and manages corporate accounts. Live at eduboost.tg.

Distributed Architecture 15 write nodes → 1 central. Collision-free ticket codes: SERVER_ID + PG sequence. Celery ~500 ms sync + 30 s crash-recovery.

3 Purchase Channels Web (async, request_id polling) - SMS/USSD (synchronous <50 ms, idempotent ref_id) - Mobile money MIXX & VAS (HMAC-SHA256 webhooks).

Offrir - Corporate Gifting Portal PDF generation, SMS/email OTP (stored on central via secured internal route), claim flow, dual-proxy frontend routing.

4-Phase Live Draw Bijective ticket anonymisation → OTP voting (soiree.eduboost.tg) → tireur selection (admin) → public draw (tirage.eduboost.tg).

Security HMAC-SHA256 webhooks, Redis OTP (endpoints) & PostgreSQL OTP (central), Redis rate-limit, operator IP allowlist, SimpleJWT staff auth.

15 write nodes 1 central node ~500 ms sync <50 ms SMS/USSD 7 apps Web / SMS / USSD

Django 6 DRF SimpleJWT Nuxt 3 Vue 3 Pinia PostgreSQL 17 Redis 7 Celery Gunicorn Docker Tailwind VueUse

eduboost.tg soiree.eduboost.tg tirage.eduboost.tg

02

DefiQuiz

SuiSco Sarl / YAS TOGO - 2025

Multi-client quiz platform with Nuxt.js / Next.js frontend and Hono.js / Deno.js backend. 5000+ questions across multiple knowledge domains, serving business clients in Togo.

Nuxt.js Next.js Hono.js Deno

defiquiz.tg

03

SuiSco My Account

SuiSco Sarl - 2025

Multi-client web application for account management, built with PHP Laravel and REST APIs.

PHP Laravel REST API MySQL

Internal deployment

04

Centralized SSO

SuiSco Sarl - 2025

Centralized Single Sign-On solution with Keycloak (OAuth2/OIDC), reducing authentication overhead across distributed services.

Keycloak OAuth2 OIDC

Internal deployment

05

Internship Management Platform

Djagora - Final Year Project (2024)

Web platform and mobile app for managing student internship offers, applications and tracking. Built with React and Node.js / MySQL for the web side, React Native for the mobile app.

React Node.js React Native MySQL

PFE-- Gestion-Apps

06

Social Data Extraction & Visualization

DK-Soft - Internship Project (2021)

Angular application for real-time extraction and visualization of social media data using ELK Stack (Elasticsearch, Logstash, Kibana) and external APIs.

Angular Elasticsearch Logstash Kibana

Frontend API

04 / Education

Academic background.

2024

Professional Master's Degree

Information Systems Engineering - Systems, Networks & Cloud Computing

Faculty of Sciences of Sfax - University of Sfax, Tunisia

Good Standing

2022

Bachelor's Degree - Computer Science

Software Engineering & Information Systems

Faculty of Sciences of Sfax - University of Sfax, Tunisia

Good Standing

2017

High School Diploma - Science Series D

Lycée La Grâce de Sokodé, Togo

05 / Skills

Tech stack.

Frontend

React / Next.js Vue.js / Nuxt.js Angular TypeScript Tailwind CSS

Backend

Django / DRF Celery Gunicorn Node.js / Express.js PHP Laravel REST API Python

Mobile

React Native Flutter

Databases

MySQL PostgreSQL MongoDB Elasticsearch Redis

Systems & Cloud

Linux / Unix Docker Docker Compose Distributed architectures Load balancing Keycloak / SSO ELK Stack

DevOps & Tools

Git / GitHub / GitLab CI/CD Virtualization Agile / Scrum

06 / Contact

Let's connect.

Open to remote opportunities, full-time positions, and freelance projects.

Email gabiam.k.samuel@gmail.com

Phone +228 90 84 77 68

Location Lomé, Togo - Available Worldwide