ALA AJJEL | DevSecOps & Full-Stack Engineer

About Me

My experience

DevSecOps/Full-Stack Engineer

Montreal, QC

ButterTech.ai

Designed the system architecture using a microservices-based approach (Spring Boot, Express.js).
Developed and containerized backend microservices and frontend apps (Next.js, Flutter).
Built and automated multi-repo Dev(Sec)Ops CI/CD pipelines with GitOps (ArgoCD, Jenkins, Terraform).
Collaborated in the migration from managed GKE to a self-hosted Kubernetes cluster on GCEs.
Implemented secure service-to-service (s2s) communication and circuit breaking with Istio.
Implemented observability stack using Prometheus, Grafana, OpenTelemetry, and EFK (Elasticsearch, Fluent Bit, Kibana).
Designed a cluster autoscaling strategy based on Prometheus metrics, enabling alerts, billing notifications, and SRE practices.

KubernetesGKE & Self-Hosted k8sHelmArgoCDIstioMicroservicesSpring BootExpress.jsJavaNode.jsPythonNext.jsTypeScriptFlutterWebRTCWebSocketCloud SQLRedisTerraformPrometheusGrafanaEFKOpenTelemetryJenkinsAnsibleGitOpsGitSonarQubeTrivySnykKubeLinter

Jun 2024 – Feb 2025

DevSecOps/Cloud/Full-Stack Engineer

Montreal, QC

ButterTech.ai

Collaborating with a team to design the system of Custom Krongsack Flutter mobile app.
Implementing the DevSecOps pipeline for the app ensuring more efficient & secure CI/CD (automated testing, secure scanning, artifact storage..).
Collabroating with a team to develop the different features for the admin/customer & shared features(Auth, Dashboard, Products, Notifications, Dynamic Link Sharing..).
Collaborating in the implementation of SL and state management using Cubit and Bloc patterns.

FlutterGitJenkinsNexusTerraformAnsiblefirebaseBLoC/Cubit PatternDI with Service LocatorCloud MessagingClean Architecture

Oct 2024 – Jan 2025

DevOps/Full-Stack Engineer

Montreal, QC

ButterTech.ai

Collaboratin with embedded engineer in managing Git version control for the OBO V3 module (maison DODJI).
Implementing a DevOps pipeline for the Buttertech website.
Collaborating on the development of the Buttertech website using efficient SSG techniques.
Building CI/CD pipeline Automting testing & significantly reducing build time of the Flutter internal communication mobile application.
Collaborating in building the parts of the communication app.

Next.jsVercelLinterFlutterGitGithubJenkinsSonarCubeSnykNexusFirebaseReactTailwind

Jul 2024 – Nov 2024

DevOps Engineer

Montreal, QC

ÉTS

Designing and implementing a data extraction solution for Terraform projects using Python and Java microservices, orchestrated with Kubernetes and Kafka.
Collaborating with experts in the code review of hundreds of Terraform technical debt instances and establishing a classification taxonomy.
Implementing various classifiers for efficient classification of IaC technical debt in Terraform-based projects.
Building a static analysis CI/CD tool (similar to sonarQube but for Terraform IaC) & vs extension for automating the technical debt classification in Terraform-based IaC projects.

TERRAFORMINFRA AS CODEJAVAPYTHONKAFKASelf-managed K8s ClusterPROMPT ENGINEERINGLLM FINE TUNINGCI/CD TOOLS

Feb 2024 – Jun 2024

Devops Int & Part-time engineer

Ariana, Tunisia

Yaiglobal

Designing an external distributed configuration service for the company's microservices.
Prototyping templates for integration with the various microservices.
Migrating to staging using Kompose(Kubernetes + Docker Compose).
Collaborating with expert to migrate to the production cluster and implementing SRE culture (Promotheus, ELK,...).

DockerDocker ComposeKubernetesMicroservicesGitExpress.jsRedis Pub/SubReactKomposeBitBucketWebhooksAWSAuto-scalingSRE

Jul 2023 - Oct 2023

Part-time DevOps Engineer

La Ménitré, France

Vilmorin-Mikado

Collaborating with a team to automate the pipeline of training computer vision models for efficient anomaly detection.
Automating the Dev and deploy pipeline of a Java mobile app integrating the trained real-time computer vision models.
Automating workflows using Git processes and leveraging Google Cloud Platform (GCP) resources for heavy model training.

GitGitlabMLOps ReliabilityEdgeOpsJavaPythonTensorFlowPytorchComputer VisionNvidia JetsonAndroid AppsDockerGCE with P100

Jan 2023 - Jun 2023

Devops/Cloud trainer

La Manouba, Tunisia

GDG Manouba

Conducting training sessions on Cloud and DevOps, with a particular focus on Google Cloud Platform (GCP).
Preparing labs and practical sessions.
Coordinating GDG internal projects, managing timelines, and collaborating with the different teams and members.
Organizing events and fostering efficient collaborations.

GCP servicesTerraformIaCTraining LabsCloudExpress.jsReactJavascriptMachine LearningComputer VisionUnityGithub Actions

Sep 2022 - Jun 2023

Cloud/Full-Stack engineer Intern

Sousse, Tunisia

Microtechnic Grp.

Collaborating with company stakeholders to specify the particular requirements for the software solution.
Designing, developing various parts of the app (Mobile (Java), Backend (PHP) & Cloud on AWS), & delivering the Solution.
Designing the solution on AWS & developing the various parts of the app (Mobile (Java), Backend (PHP) & frontend (HTML & CSS)).
Setting up servers, configured networking and firewalls, deployed the application, and successfully delivered the final solution.

AWS EC2 & ASGVPC & SG ConfigsJavaPHPAWSHTMLCSSAmazon RDS MysqlGit

Jul 2022 - Oct 2022

My Education

Degree: Computer Science Engineer

Specialization: Software Engineering

National School of computer Science

Grade: Good

Sep 2021 - Sep 2024

Degree: Master's Degree in Smart Sytems

Specialization: Smart-System: Internet Of Things

National School of computer Science

Grade: Good

Sep 2023 - Sep 2024

Degree: Preparatory Studies For Engineering Cycle

Specialization: Mathematics & Physics

Monastir University

Ranked in the top 200 out of over 1,900 candidates in the national entrance exam for engineering schools in Tunisia.
Diploma of First Cycle Studies in Mathematics & Physics
grade: Good

Sep 2019 - Jul 2021

Personal Projects

DevSecOps Projects

E2E DevSecOps CI/CD Pipeline in Game Development

A highly customizable End-to-End DevSecOps CI/CD pipeline tailored for game development. This pipeline integrates security, automation, and scalability into the software delivery process, ending with deployment to multiple game platforms.

Jenkins
Docker
SCM Platform
Webhooks
Snyk
SonarQube
OWASP ZAP
Terraform
Ansible
Nexus
Game Platforms

Web Apps

3ayatli : Client to Service provider (C2S) Platform

Collaborating with a team to build a highly scalable professional full-stack web application dedicated to connecting clients and service providers.

Angular
Laravel
OAuth2
JWT
AWS RDS
github

Mobile & Game Apps

BookLand: Library Mobile App for Books, News, New Arrivals, and Online Purchases

Collaborating with a team to develop a highly scalable, professional full-stack mobile app for a library, empowering users to explore the latest news, discover products, and make online reservations and purchases.

Flutter
SpringBoot
OAuth2
JWT
AWS RDS
github

Cloud Projects

AWS Services and Solutions Projects

Designing and architecting robust solutions on the AWS platform, leveraging a wide range of services with a strong focus on security, scalability, and performance.

AWS Compute services
AWS Storage & DB services
AWS Networking & hybrid cloud
AWS Identity and Access Management

Security projects

Educational Attack Simulation on Funcam Servers (For Educational Purposes)

Using Ghidra and Binwalk to extract and decompile the receiver's binary and retrieve the identity. Executing an AI-driven DDOS attack (AI-SAA) on the Funcam server. Creating a zombie server that caches and shares Funcam keys with subscribers through the extracted identity.

Ghidra
Binwalk
c++
python
on-prem server

Tech Challenges

199+ Problems Solved in Various Programming Languages Across Different Categories

This collection features 199+ programming problems i have solved ⊂ various categories with !problem-solving approaches ⊂ !algorithms && !data structures && !languages.