Automate a business workflow with AI
Map a repetitive process, select the right model and connect a secure agent or RAG system to the tools your team already uses.
Audit + proof of concept + production roadmap
Youssef Mehili
Freelance Software Engineer — Full-stack, Integrations & Applied AI
Backend / APIs / MicroservicesAI & workflow automationWeb / Mobile / SaaSIoT / On-premise / Technical softwareAvailable now • Full remote worldwide
About
I help startups, SMEs and technical teams design, strengthen or modernize software products—from a backend or SaaS feature to a mobile application, an IoT platform, an AI workflow or technical C++/Python software. I am available for fully remote work worldwide.
My public work includes software modernization at the Tunnel Study Center (CETU), AI and systems experiments, and open repositories that make parts of the approach checkable. Confidential work remains protected.
I bring a product and delivery perspective: I care about the business problem, the delivery risk and the result, not only the stack.
What I can ship
Choose a focused intervention or combine them into a complete delivery.
Build or strengthen a backend
Design APIs, microservices and integrations that stay understandable and reliable as the product and team grow.
FastAPI / NestJS / Node.js delivery with Docker and CI
Modernize technical software
Improve calculation, simulation, rendering or migration software with a pragmatic mix of C++, Qt, Python, performance work and UX improvements.
Performance diagnosis + modernization plan + implementation
Ship a web, mobile or SaaS product
Build a customer-facing application or internal tool end to end, from data model and APIs to responsive web or mobile interfaces.
Full-stack delivery with a clear scope and deployable increments
Prototype a data, IoT or R&D product
Turn a technical idea into a demonstrable prototype using computer vision, machine learning, robotics, IoT data flows or simulation.
Technical prototype + evaluation pipeline + next-step plan
Experience
Practis
Feb 2026 – PresentCo-founder & Lead Software Engineer
Remote
- Co-founded Practis, a healthcare SaaS for physiotherapists that unifies patient records, scheduling, rehabilitation programs, and patient follow-up.
- Lead product and engineering across the multi-tenant web platform, native mobile applications, backend APIs, onboarding, and data migration using Next.js, NestJS, PostgreSQL, Kotlin, and Swift.
- Built security and delivery foundations including role-based access, audit trails, CI/CD, monitoring, and privacy-conscious workflows.
Serfim TIC
Apr 2026 – PresentSoftware Engineer & AI
Lyon, France
- Contributed to company-wide AI adoption by identifying and prioritizing use cases, evaluating solutions, and integrating and deploying AI workflows across teams.
- Designed and delivered Altaïm, a quality-control application for ERP data migrations that validates and annotates Excel workbooks before Sage X3 imports using Vue, NestJS, TypeScript, and PostgreSQL.
- Built Altaïm’s configurable validation catalogue, audit history, and in-memory workbook processing to reduce migration risk without sending source files to external AI services.
Tunnel Study Center (CETU) — Ministry of Transport
Jul 2024 – Mar 2026Software Engineer
Lyon, France
- Modernized safety-critical tunnel lighting software using C++, Qt, and Python, with additional work in an embedded Linux environment.
- Worked on calculation and rendering paths through optimized visibility algorithms using physics-based light modeling techniques.
- Contributed to backend modernization and UX improvements using Python, C++, and simulation workflow optimization.
Junior Conseil Taker
Jan 2025 – PresentLead Developer — Backend & AI
Remote
- Served as backend and AI lead developer on Atelier 3.0, a €50k+ textile software engagement that won the 2026 ALTEN Award for Best Engineering Study with Junior Conseil Taker.
- Improved delivery scalability across client projects through robust API and microservice architectures using Nest.js, Node.js, and FastAPI.
- Increased delivery reliability across development teams through code reviews, QA protocols, CI/CD workflows, and technical coordination.
PoC Innovation
Sep 2024 – Jul 2025R&D Developer — AI
Lyon, France
- Advanced neuromorphic AI research through bio-inspired prototypes using PyTorch and spiking neural network architectures.
- Validated theoretical models through end-to-end proofs of concept using physical or simulated hardware and reproducible experimentation pipelines.
- Accelerated student knowledge transfer through practical R&D projects and open-source learning material using recent academic research, Python, and PyTorch.
Projects
Supported lighting sizing for French tunnels through safety-critical software using C++, Qt, Python, and embedded Linux.
C++QtPythonEmbedded Linux
Public reference + pictures available.
Atelier 3.0
Led backend and AI development, product architecture, technical coordination, and integration for a €50k+ textile platform that won the 2026 ALTEN Award for Best Engineering Study with Junior Conseil Taker.
Next.jsFabricNest.jsRailwayFastAPI
Award-winning client engagement; code, data, and private project materials are not public.
AI-Powered CRM
Automated outreach workflows through an AI-powered CRM using Next.js, FastAPI, AWS, the OpenAI API, TailwindCSS, and shadcn/ui.
Next.jsFastAPIAWSOpenAI APITailwindCSSshadcn/ui
Work in progress.
Co-founded and led engineering for a multi-tenant healthcare SaaS that unifies patient records, scheduling, rehabilitation programs, and patient follow-up for physiotherapists.
KotlinSwiftNext.jsNestJSPostgreSQLPrismaRedis
Co-founder & Lead Software Engineer.
Altaïm — ERP Data Migration
Secured ERP migration preparation through configurable quality checks and annotated Excel workbooks for Sage X3 data loads using Vue, NestJS, TypeScript, PostgreSQL, and Drizzle ORM.
VueNestJSTypeScriptPostgreSQLDrizzle ORMExcel
Confidential project: the role and general scope can be discussed; code, data, and screenshots are not public.
Built an AI agent that can operate a complex application through natural-language requests within an on-premise IoT supervision platform covering multi-protocol collection, real-time mapping, dashboards, alerts, and multi-tenant administration.
AI agentTypeScriptVue 3NestJSFastifyPostgreSQLMongoDBRabbitMQ/MQTTKeycloakDockerNginxMapLibreEChartsTailwind CSSVuetifyNx
TrackTourets
Digitized cable-reel management and traceability workflows through an end-to-end application using Vue 3, TypeScript, Vite, NestJS, PostgreSQL, Drizzle ORM, Keycloak/OIDC, Redis, Superset, Docker, Nginx, and Tailwind CSS.
Vue 3TypeScriptViteNestJSPostgreSQLDrizzle ORMKeycloak/OIDCRedisSupersetDockerNginxTailwind CSS
Confidential application: the role and general scope can be discussed; code, data, and screenshots are not public.
Fraud Checks Detection (SaaS)
Supported check-screening workflows through a SaaS combining AI fraud detection and forensic analysis using Next.js, FastAPI, AWS, TailwindCSS, and shadcn/ui.
Next.jsFastAPIAWSTailwindCSSshadcn/ui
Confidential project: the role and general scope can be discussed; code, data, and screenshots are not public.
E-Commerce for West Africa
Enabled online retail for Benin and West Africa through an Amazon-style marketplace using Next.js, React, Node.js, SQL, Prisma, shadcn/ui, Tailwind, and Stripe.
Next.jsReactNode.jsSQLPrismashadcn/uiTailwindStripe
Confidential project: the role and general scope can be discussed; code, data, and screenshots are not public.
Selected public projects are shown above. Confidential work can be discussed without sharing protected code, data, or screenshots.
Read the case studiesSkills & Interests
Technologies
PythonPyTorchCC++TypeScriptNest.jsNode.jsReactNext.jsDocker
Strengths
Artificial IntelligenceFull-Stack Web DevelopmentLow-Level Development
Languages
FrenchEnglishArabic
Interests
CodingPoliticsPhysicsMathematics
Certifications
Cambridge C1 Advanced
Education
EPITECH — European Institute of Technology
Expected 07/2028Software Engineer — Master in Computer Science
Lyon, France
Have a project in mind?
Let’s identify the smallest useful first step.
Send me the context, the current bottleneck and your target date. I’ll reply with a concrete first proposal.