Available for new opportunities

Full-StackDeveloper

I design and build digital products that turn complex processes into clear, scalable experiences that move the business forward.

Madrid, Spain5+ years of experience
Editorial portrait of Francisco Catalán
01 / 04Building with purpose
FocusEnd-to-end
Now learningBig Data & Analytics
Scroll to explore
Full-Stack ✦Automation ✦Cloud ✦Applied AI ✦Useful software ✦Full-Stack ✦Automation ✦Cloud ✦Applied AI ✦Useful software ✦
/ 01 — Profile

Technology works better when it understands people.

I am a systems engineer and Full-Stack Developer. I move between frontend, backend and business to turn real needs into software that can be maintained, measured and grown.

I currently build solutions with artificial intelligence while studying a Master’s in Big Data & Business Analytics. My approach combines technical judgment, direct communication and an obsession with removing friction.

Connect by email
/ How I contribute

I turn business needs into systems that can be measured, maintained and evolved.

Stack
AngularJavaScriptREST APIsPythonSQL Server
In practice

I design complete products, from the interface to the processes that keep them running in production.

/ 02 — Selected cases

Real experience, told from the problem to the impact.

01 Fintech · Retail

Commercial credit at scale

A public and private web ecosystem for cardholders, covering online payments, transactions, benefits, financial services and API integrations.

OutcomeMore than 2.2M cardholders
StackAngular · Flask · Webpay · SQL Server · Azure
Read the full case study
02 Risk · Collections

Collections portfolio allocation at scale

A full-stack platform for configuring rules, allocating overdue and written-off debt portfolios, processing external collection agencies’ results and automating operational follow-up.

OutcomeDaily processes automated in ≈3 min
StackAngular · Python · Flask · SQL Server · SFTP
Read the full case study
03 Cloud · Documents

A traceable document library

A platform for recovering, storing and retrieving signed documents, call recordings and vouchers through OneDrive, APIs and overnight processes.

OutcomeSearchable, traceable documents in production
StackAngular · Flask · Graph · OneDrive · SQL Server
Read the full case study
04 AI · HR

Systems with human judgment

An internal platform for managing working hours, absences and employee documents, with automated validations and private AI-assisted document analysis.

OutcomeLive platform under continuous development
StackJavaScript · FastAPI · PostgreSQL · OCR · Private AI
Read the full case study
5+years building
business software
2.2Mpotential customers
across digital products
End-to-endfrom architecture
to production
AI + Cloudcurrent technical
focus
/ 03 — Journey

A career across critical systems and new possibilities.·

From AS/400 to AI solutions: technical curiosity only matters when it creates visible results.

07.2026 — present

Carmon Inversores

AI Engineer / Full-Stack Developer

Building internal HR products, automations and solutions connected to documentation and 360º business visibility.

Madrid, Spain
06.2022 — 05.2026

Fashion's Park S.A.

Technical Development Lead / Full-Stack Developer

Led the development of more than three critical corporate platforms for credit, collections and document management over four years.

Santiago, Chile
08.2021 — 12.2021

Consorcio Credicard C.A.

IT Developer

Maintained and improved internal AS/400 programs, connecting business needs with concrete technical improvements.

Caracas, Venezuela
11.2019 — 01.2021

CANTV

Software Developer

Contributed to operational information systems and a MySQL database for updating central-office data. Also developed web interfaces with JavaScript, Bootstrap and Tailwind CSS.

Venezuela
/ 04 — Toolkit

Tools are the medium. Judgment is the difference.

  • AngularFrontend
  • TypeScriptFrontend
  • JavaScriptFrontend
  • PythonBackend
  • FastAPIBackend
  • FlaskBackend
  • Node.jsBackend
  • PostgreSQLData
  • SQL ServerData
  • AzureCloud
  • SupabaseData
  • DockerCloud
  • REST APIsArchitecture
  • Microsoft GraphCloud
  • CI/CDDelivery
/ 05 — Contact

Have an interesting challenge?

I am open to Full-Stack opportunities in Spain and projects where software has to do more than simply work.