Freelancer profile translated to English.

Description

Full-Stack Software Engineer specializing inRuby on Rails, Vue.js, Python/FastAPIand **Rust**, I assist companies in the design, architecture, and development of high-value-added software solutions: SaaS, marketplaces, business tools, AI platforms, secure APIs, and web, mobile, or desktop applications.

With **8 years of experience**, I am involved in the entire project lifecycle: requirements analysis, architecture, development, industrialization, deployment, and maintenance. My goal is to design robust, performant, scalable, and easy-to-maintain applications.

Areas of expertise:

• Ruby on Rails (modular architecture, Packwerk, RSpec)

• Vue 3, TypeScript, Pinia, Vite, Capacitor

• Python, FastAPI, SQLAlchemy

• PostgreSQL, Redis, Docker, CI/CD

• REST APIs, third-party service integration

• Advanced Authentication (OAuth2, OpenID Connect, Entra ID/Azure AD, SSO, OTP, RBAC)

• Artificial Intelligence: LLM, RAG, semantic search, and automation

I work on both the creation of new products and the maintenance of existing applications: modernization, migration, performance optimization, technical debt reduction, code quality improvement, and team support.

I place particular importance on **Clean Code**, automated testing, software architecture, security, and performance to deliver reliable, sustainable solutions capable of evolving with business needs.

Industry field of expertise

Languages

English
Fluent
Spanish
Native or bilingual
Portuguese
Native or bilingual
French
Native or bilingual

Workplace preferences

Remote only

Primarily works remotely

Alexandre Velia Développement
Fullstack Developer
SOFTWARE PUBLISHING
March 2019 - Today (7 years and 5 months)
Port-Louis, Mauritius
Founder and Full-Stack Software Engineer, I assist companies in the design, architecture, and development of custom software solutions, specializing in SaaS applications, business tools, APIs, artificial intelligence, and high-value-added platforms.

I am involved in the entire project lifecycle: requirements gathering, software architecture, data modeling, Full-Stack development, continuous integration, deployment, performance optimization, security, and maintenance. I pay particular attention to code quality, architectural scalability, and the sustainability of developed solutions.

My areas of expertise include the development of multi-tenant SaaS platforms, complex business applications, artificial intelligence solutions (RAG, generative AI, semantic search), high-performance APIs, cloud and containerized architectures, as well as the modernization of existing applications.

Main Stack: **Ruby on Rails, Python, FastAPI, Laravel, Vue.js, TypeScript, PostgreSQL, Redis, Docker, CI/CD**. I work on both new projects and missions involving audits, redesigns, optimizations, or reinforcing technical teams.
PostgreSQL Gitlab CI/CD Docker Project Management Artificial Intelligence
Leviatan
Software Engineer
DIGITAL AND IT
April 2024 - July 2025 (1 year and 3 months)
Aix-les-Bains, France
Design, architecture, and development of two Full-Stack SaaS platforms in Python 3 and Vue.js, using the latest technologies in the ecosystem (FastAPI, SQLAlchemy, PostgreSQL, Redis, Docker, Vue 3, TypeScript...). Participation in the entire application lifecycle: requirements analysis, technical design, development, optimization, security, deployment, and maintenance.

Project 1 – SaaS Platform for Real Estate Operations Management (pair work)

Design and development of a platform for real estate developers to manage large-scale real estate projects, from feasibility studies to project completion.

Development of business features related to planning, technical and financial tracking, risk assessment, budget management, milestone tracking, and generation of reports and decision-making dashboards. Participation in architectural choices, code reviews, and continuous improvement of performance and software quality.

Project 2 – White-label RAG Platform (fully autonomous development)

Architecture, design, and development of a RAG (Retrieval-Augmented Generation) solution for SMEs and large corporations looking to deploy private AI on their data.

Development of a scalable architecture integrating semantic search, document ingestion, knowledge management, secure APIs, authentication, multi-client administration, and language model orchestration (LLM). Industrialization of the platform with Docker and implementation of best practices for quality, security, and performance.
Docker Python 3 Vue.js SaaS Redis
Groupe Actual - TYSOFT
Backend Developer
CONSULTING AND AUDITS
May 2023 - December 2023 (7 months)
Aix-les-Bains, France
Development and evolution of theActual Digitalbusiness platform in an Agile environment, contributing to the creation of new features and continuous improvement of the application.

Design, development, and maintenance of Full-Stack features withLaraveland **Vue.js**, in close collaboration with product, UX/UI, and business teams. Participation in Agile ceremonies (planning, daily meetings, refinement, sprint review, and retrospective), analysis of functional requirements, development estimation, and continuous delivery of high-value features.

Rigorous application of development best practices: Clean Code, code reviews, software quality, performance optimization, bug fixing, evolutionary maintenance, and adherence to development standards to ensure the reliability, maintainability, and longevity of the platform.
Docker Laravel Vue.js Clean Architecture CI/CD