JRM
ES
Open to full-time roles & freelance projects

Juan IgnacioRodríguez Mariani

Software Engineer · Full-stack Freelance Developer & AI-Augmented Systems

scrollmove · click · hold to charge

// 01 — about

About

// 01.1 — profile

I transform business problems into fast, scalable digital solutions. Whether working as a full-time engineer or a freelance consultant, I build production web platforms end to end: from API design to deployment. Information Systems Engineer, graduated from Universidad Nacional del Sur.

By day I work as a Software Engineer at NexoSmart, and as Co-founder of Xenova I deliver custom software to real businesses. Agentic AI tooling — Claude, Gemini, Antigravity CLI — is a core part of how I write high-quality code in record time.

Information Systems EngineeringUniversidad Nacional del Sur · 2026

Juan Ignacio Rodríguez Mariani

Bahía Blanca, Argentina

Fig. 01 — Bahía Blanca, Argentina38.7183° S · 62.2663° W

// 02 — services

Freelance Services

// 01 / 03

Custom Software & Web Platforms

End-to-end development of web apps, SaaS, and internal management systems that automate your business.

What you get→ Scoping, build, deploy and handoff — one engineer, end to end.

// 02 / 03

AI Integration & Automation

Integration of smart agents (Claude, Gemini) and WhatsApp bots to optimize customer support and operations.

What you get→ Agents wired to your real data, with human review where it matters.

// 03 / 03

Architecture & DevOps

Software that doesn't go down. Complete management from codebase to production servers (Linux, Nginx).

What you get→ Linux + Nginx servers, automated deploys and a release process you can trust.

// 03 — git log --graph

Experience

  1. NexoSmart

    Software Engineer

    Sep 2025 – present · Software Developer Intern Jun–Sep 2025

    • Develop REST APIs in Laravel and frontend features in Next.js for client-facing products.
    • Reduced response times on the highest-traffic endpoints with database indexes and Laravel query caching.
    • Own server configuration, production deployments and release cycles on Linux with Nginx.
  2. XenovaIT

    Lead Engineer & Technical Director · self-employed

    Jan 2025 – present

    • Independent software practice run in parallel with my role at NexoSmart — client engagements handled end to end: requirements scoping, architecture and operations.
    • Built and operate a private management platform used by 10+ partner companies in the food industry, integrating third-party services into a single Laravel + Next.js system.
    • Built a management platform for 5taPata (retail) that replaced manual administration and inventory workflows with one web application.
  3. Le Pas Sage

    Freelance Full-stack Developer

    2024 – 2025

    • Built an e-commerce platform end to end: Laravel backend, Next.js storefront and payment integration.

// 04 — projects

Projects

4.1In production

Cuonti

Co-creator & full-stack engineer

Multi-tenant SaaS that automates Argentine tax compliance for accounting firms. In production with 50+ active clients and 150+ registered accounts.

active clients
50+
registered accounts
150+
  • Native integrations with ARCA (Argentina's federal tax agency): electronic invoicing and F.931 payroll-tax filing generation.
  • In-product AI assistant that lets accounting firms query and operate on their tax data.
  • Multi-tenant architecture serving every firm from a single deployment.
  • Laravel
  • React
  • MySQL
4.2In production

Food Partners Patagonia

Lead Engineer — Xenova

Enterprise system for an integrated seafood exporter (red shrimp, king crab) facing international audits and demanding wholesale buyers.

  • Built a custom ERP module to track inventory and export operations across the supply chain.
  • Handled full-stack development from database schema to the final user interface.
  • React
  • Laravel
  • MySQL
4.3In production

Madryn Buceo

Full-stack Engineer — Xenova

Digital transformation for an adventure tourism operator, centralizing scattered bookings from manual channels into a single platform.

  • Integrated secure payment processing (Stripe) and automated booking confirmations.
  • Developed a modern, responsive frontend with Next.js and a robust Node.js API.
  • Next.js
  • Node.js
  • PostgreSQL
  • Stripe
4.4Public repo

Agro BCS

Engineer — UNS & INTA research collaboration

Mobile app built with INTA researchers that estimates bovine body condition scores (BCS) from field photos, using image processing to replace manual visual scoring.

  • Thesis project (with Ian Sebalt and Lucas Bazán), directed by Dr. Dana Urribarri and Dr. Martín Larrea, in collaboration with INTA.
  • Already in use on real farms in the region — works offline in the field.
  • Covered by regional press and industry media.
4.5Self-hosted

Production VPS

Owner & operator

Self-managed Ubuntu VPS where my applications run in production: Nginx reverse proxy, Cloudflare in front, and deploy pipelines I built and operate myself.

  • Full ownership of the path from merge to production: server config, TLS, releases and rollbacks.
  • Ubuntu
  • Nginx
  • Cloudflare
  • CI/CD

// 05 — agent orchestration

How I work

Not autocomplete — agentic workflows. I run AI agents as part of my engineering process on real production codebases, with the same rigor as any other code: reviewed, tested and verified before it ships.

  • 5.1

    Multi-agent workflows

    Planning agents, parallel codebase explorers and adversarial reviewers orchestrated on real features — not toy demos.

  • 5.2

    Custom skills & commands

    Reusable skills and slash commands that encode repeatable engineering tasks: design systems, code review checklists, deploy routines.

  • 5.3

    MCP servers in daily work

    Model Context Protocol servers wired into the workflow — project management, documentation and design tools reachable from the agent session.

  • 5.4

    Verification before done

    Every AI-assisted change runs the same gauntlet: builds, tests, lint and a human review. AI speeds up the loop; it doesn't skip it.

  • Claude Code

    daily driver — agents, skills, MCP, multi-agent orchestration

  • Codex

    secondary agent for parallel work

  • Gemini

    API integrations in shipped products

// 06 — skills

Skills

// 23 skills · 5 groups · 1 ball

Backend

06

daily at NexoSmart and in Cuonti

  • Laravel / PHP
  • Node.js
  • REST API design
  • MySQL
  • PostgreSQL
  • Redis

Frontend

04

production UIs for client-facing products

  • React
  • Next.js
  • TypeScript
  • Tailwind CSS

Infra & DevOps

05

self-managed production VPS

  • Linux (Ubuntu)
  • Nginx
  • Cloudflare
  • CI/CD
  • Git

AI tooling

05

agentic workflows as part of how I ship

  • Claude Code
  • Multi-agent workflows
  • MCP servers
  • Codex
  • Gemini

Languages

03
  • Spanish (native)
  • English (B2)
  • Italian (basic)

// 07 — contact

Contact

// open channel

Let's talk.

Open to interesting engineering work. The fastest way to reach me is email — I answer.

Open to full-time roles & freelance projects

Fig. 07 — email