You will get A custom React & Supabase internal tool built for your business
Project details
I build custom internal tools and automations for teams, the
kind of software that replaces hours of manual work with a single
click.
My background combines hands-on development with a management
degree from IE Business School (Madrid), which means I work
directly with non-technical stakeholders and translate business
problems into clean, production-ready software.
Recent work includes a data automation tool for a company that eliminated a multi-hour weekly manual process,
and a supplier intelligence tool for a sustainability marketing
team generating ~230 structured matches per run.
Every project I deliver includes full documentation and a deploy
guide. You own 100% of the code — no lock-in, no black boxes.
Stack: React · Supabase · Claude API · Gmail API · OAuth 2.0
Message me before purchasing if you'd like to discuss your
use case or see a video demo of past work.
kind of software that replaces hours of manual work with a single
click.
My background combines hands-on development with a management
degree from IE Business School (Madrid), which means I work
directly with non-technical stakeholders and translate business
problems into clean, production-ready software.
Recent work includes a data automation tool for a company that eliminated a multi-hour weekly manual process,
and a supplier intelligence tool for a sustainability marketing
team generating ~230 structured matches per run.
Every project I deliver includes full documentation and a deploy
guide. You own 100% of the code — no lock-in, no black boxes.
Stack: React · Supabase · Claude API · Gmail API · OAuth 2.0
Message me before purchasing if you'd like to discuss your
use case or see a video demo of past work.
Programming Languages
JavaScript, TypeScriptCoding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$295
|
Standard
$595
|
Advanced
$1,095
|
|---|---|---|---|
| Delivery Time | 7 days | 14 days | 21 days |
Number of Revisions | 1 | 2 | 3 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Additional Revision
+$55Frequently asked questions
About Alfonso
Developer | B2B Automations & Internal Tools | AI Integration
Madrid, Spain - 11:37 pm local time
software that replaces hours of manual work with a single click.
My focus is on practical, production-ready tools: data processing pipelines,
supplier intelligence dashboards, Gmail-integrated workflows, and AI-powered
automations using the Claude API. I work with React on the frontend and
Supabase as the backend, with OAuth 2.0 for secure integrations.
Two recent projects:
→ Automated a multi-hour weekly data workflow for a B2B energy consultancy —
now runs in seconds with zero manual input.
→ Built a supplier intelligence tool for a sustainability marketing team that
cross-references vendor lists against a public database, generating ~230
structured matches per run.
Over the past year I've worked with companies across energy, sustainability,
and marketing to identify operational bottlenecks and build software that
solves them — not just technically, but in a way that actually gets adopted
by the team.
My background combines hands-on development with a management education from
IE Business School (Madrid, top 10 European business school), which means I
can work directly with founders, ops leads, and non-technical stakeholders —
translating business processes into clean, maintainable software without
losing sight of the underlying goal.
I don't build black boxes. Every project I deliver is documented, explained,
and designed to be owned by your team after handoff. If you're looking for
someone who can map your workflow, identify what can be automated, and ship
it — I'd be glad to connect.
Available for fixed-price projects and hourly engagements.
I work in English, Italian, and Spanish.
Stack: React · TypeScript · Supabase · PostgreSQL · Claude API ·
Gmail API · OAuth 2.0 · REST APIs
Steps for completing your project
After purchasing the project, send requirements so Alfonso can start the project.
Delivery time starts when Alfonso receives requirements from you.
Alfonso works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery
We align on the problem, workflow, and expected output. I ask the right questions to create a tool built around your exact process, not a generic template.
Scoping & architecture
I define the technical solution, data model, and integrations needed. You get a clear picture of what will be built before any code is written.