Hi, I'm

Hadi Tahini

Software Engineer — Full-Stack & DevOps

Building reliable software, from backend APIs to the pipelines that ship them. Based in Lyon, France.

About

A bit about me

Results-oriented Software Engineer with 2+ years of experience across backend, full-stack, and DevOps, holding a Master's degree in Cyber-Physical and Social Systems (IoT, AI & System Design) from École des Mines de Saint-Étienne, and a Bachelor's in Computer Science from the Lebanese International University.

I like working across the whole stack, designing APIs, building the frontend that consumes them, and setting up the CI/CD and infrastructure that gets it all into production reliably. Recent work spans Java/Spring Boot, .NET, Angular, Docker/Kubernetes, and cloud platforms (AWS, Azure), with a growing focus on microservices architecture and GitOps-style deployment automation.

Outside of freelance and client work, I run a personal Kubernetes homelab, and I'm currently building Tosloc, a full multi-tenant SaaS platform for field-service businesses.

École des Mines de Saint-Étienne — CPS2 ↗

Outside of work

Chess
I enjoy the strategic thinking and pattern recognition, and currently have a 1600 chess rating.
Reading
I enjoy reading philosophy books and exploring different perspectives on ethics, logic, and human nature.
Swimming
Regular swimmer, it's a great way to reset and recharge after a long day of coding.
Table Tennis
I enjoy the fast pace and precision of table tennis. It's a fun way to stay active while sharpening focus and reflexes.

Skills

Technologies I work with

Languages

JavaJavaScript / TypeScriptPythonPHPC++C#Bash / ShellSQLHTML5 / CSS3

Frameworks

Spring Boot.NET CoreLaravelAngularVue.jsReactPlaywright

DevOps & Cloud

DockerKubernetesAnsibleTerraformHelmGitJenkinsGitLab CIGitHub ActionsAzure DevOpsOctopus DeployAWS (EC2, S3, Lambda)Azure (App Services, Functions)

Databases

MySQLPostgreSQLMariaDBSQLiteMongoDBSQL Server

Security

OAuth2JWTOIDCSSL/TLSSpring SecurityXSS / SQLi / CSRF hardening

Testing

PlaywrightSeleniumMSTestJUnitPostmanSwagger

IoT & Embedded

ESP32MicroPythonLoRaWAN6LoWPANMQTT

Methodologies

Agile / ScrumTest-Driven DevelopmentUML Modeling

Soft skills

Problem solving
Teamwork & technical communication
Project management (Agile/Scrum)
Autonomy & initiative
Adaptability
Technical documentation
Mentoring & knowledge sharing

Languages

Arabic — Fluent
English — Fluent
French — Intermediate

Certifications

Cisco CCNA1 & CCNA2
IT Essentials
Introduction to Cybersecurity

Experience

Where I've worked

Freelance Software & DevOps Developer

Oct 2024 — Present

Independent / Client Projects · Remote

–Prospecting and sourcing clients, identifying high-value opportunities.
–Building custom software for startups and businesses with Java, Spring Boot, Angular and React.
–Owning the full project lifecycle: requirements gathering, frontend/backend development, deployment.
–Deploying high-availability infrastructure with Docker and Kubernetes on AWS EC2.
–Automating provisioning with Ansible (playbooks, roles, inventories).
–Designing multi-environment CI/CD pipelines with Jenkins and GitLab CI.
–Building secure REST APIs with Spring Security, OAuth2, and MySQL.

JavaSpring BootAngularReactDockerKubernetesAWSAnsible

Software Developer

Feb 2024 — Aug 2024

Eurofins · Nantes, France

–Backend performance optimization in .NET Core, with REST APIs tested via Swagger/Postman.
–Migrated the frontend from Angular 14 to 16, resolving compatibility issues and reworking the UI.
–Implemented Hangfire for scheduled tasks and background processing.
–Wrote and deployed automated E2E tests with Playwright and unit tests with MSTest (~95% coverage).
–Set up CI/CD pipelines in Azure DevOps with automated deployment via Octopus Deploy.
–Integrated OIDC authentication and favorite-project management via secure SQLite.
–Worked in Agile/Scrum, collaborating closely with the team, PM, and product owner.

.NET CoreAngularPlaywrightMSTestAzure DevOpsOctopus Deploy

Software Engineer

Apr 2022 — Aug 2022

Menta SAS · Sophia Antipolis, France

–Designed and built a license management web application, cutting manual processes by ~95%.
–UML-modeled the system architecture and workflows from requirements analysis.
–Built a responsive interface with HTML5, CSS3, JavaScript ES6, and Bootstrap 5.
–Developed the PHP/MariaDB backend, hardened against XSS, SQL injection, and CSRF.
–Containerized and deployed with Docker and Nginx.

PHPMariaDBBootstrapDockerNginx

Education