GREENUS: Ambassador learning & certification platform
Full-Stack Developer & DevOps Engineer, GLOBE-STEAMSS, ACS-UPB
A Udemy-style platform dedicated to training, evaluating and certifying Greenus ambassadors: on-demand courses, live webinars, structured certification paths, assessments, digital badges and a community layer.
Problem
Greenus ambassadors needed structured learning paths with verifiable credentials and a place to collaborate, not just a video library.
Solution
A learning and certification platform with assessments, digital badges and certificates, RBAC for administrators, trainers and ambassadors, and real-time community features, built on the same cloud-native stack as GLOBE-CoP.
My contribution
- Architected and implemented the platform: on-demand video courses, live webinars, certification paths, assessments, digital badges and certificates.
- Built the responsive frontend (ES6+, HTML5, CSS3/SASS) and the backend: Node.js/Express REST APIs plus Flask micro-services for authentication, certification management, payments and recommendations, secured with JWT.
- Modelled data across PostgreSQL/MySQL and MongoDB for profiles, certification progress, content, community interactions and audit logs.
- Containerised all services and deployed with Helm on EKS/GKE; GitHub Actions and Jenkins CI/CD with unit, integration and end-to-end tests; Terraform + Ansible infrastructure.
- ELK, Prometheus and Grafana monitoring with automated alerts; multi-AZ deployments, OWASP ZAP scanning, automated SSL renewal and least-privilege IAM.
- Full-Stack Developer, front end to cloud: React and Angular front ends in TypeScript and JavaScript, NestJS and Express APIs, shipped as containers to Kubernetes on AWS and Azure, with Terraform, GitOps (Argo CD), GitHub Actions CI/CD, security scanning and observability
Stack
Node.js
Express
Python
Flask
JavaScript
HTML5
CSS3
Sass
PostgreSQL
MySQL
MongoDB
Redis
JWT
WebSockets
Docker
Kubernetes
Helm
Terraform
Ansible
AWS
Google Cloud
GitHub Actions
Jenkins
ELK Stack
Prometheus
Grafana
NGINX
Swagger / OpenAPI
OWASP ZAP
React
Angular
TypeScript
NestJS
Argo CD
Microsoft Azure
Cloudflare
OpenTelemetry
Trivy
PlaywrightLinks
What it does
- On-demand video courses and live webinars.
- Structured certification paths with assessments, digital badges and certificates.
- Role-based access for Administrators, Trainers and Ambassadors.
- Discussion forums, threaded comments, real-time notifications (WebSockets), private messaging and study groups.
Platform
Same architecture family as GLOBE-CoP: Node.js/Express core, Python/Flask micro-services, hybrid relational + document storage with Redis caching, Docker + Helm on Kubernetes (AWS EKS / GCP GKE), Terraform + Ansible infrastructure, CDN delivery for video, and ELK / Prometheus / Grafana observability.
