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Custom software
I turn your business rules and workflows into a platform your team can use every day, with centralized information and clear permissions.
Management platforms · Portals · Internal operations
Let's talk about your idea00 /Engineering with intent
Available for new projects
Software with purpose.
Your team has better things to do than wrestle with tangled processes and manual work. I design software that organizes your information, connects your operation and automates the busywork so you get back in control.
Brandon Hernández/Computer Engineer · Technical Lead
See my work 01 /Featured projects
Software that solves real problems.
Platforms for complex operations and apps for everyday needs.
Explore each project right here.
Environmental management
EPR declarations backed by reliable data.
- EPR law
- Material composition
- Declarations
- Costs
- Data quality
A platform for producers and importers that links products, quantities and material composition to EPR (Extended Producer Responsibility) declarations, costs and reports. It centralizes commercial and operational data that usually lives across spreadsheets and emails.
Green Soft · Full development
Visit siteThe challenge
Turn EPR domain rules into consistent data and calculations: categories, materials, units and household versus non-household classification. A difference in a product's weight or classification can change its declared tonnage and the associated cost.
My contribution
Full development of the platform at Green Soft: product management, bulk uploads, declarations and calculation logic. I worked on data normalization, validation and traceability to turn operational records into usable EPR information.
What it does
- Companies and products
- Companies, sites and a catalog of priority products with EPR categories and household, non-household and supplies information.
- Declarations and bulk uploads
- Monthly declarations and Excel imports to process products, imports and declared quantities.
- Composition and weights
- Product material composition and a Weigh product feature to determine the weight of each material in a product.
- Costs and comparison
- Links composition, weight, material, category and tonnage to calculate and compare costs across management systems.
- Baselines and projections
- Consolidates quantities and baselines to analyze declared information and build projections.
- Compliance reports
- EPR reports and a dashboard to review compliance information based on the company's data.
02 /Services
Less friction. More control.
Software for what slows your operation down: scattered information, manual tasks and systems that don't connect.
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Automation and integrations
I connect your tools and automate tasks, validations and approvals so information flows without double data entry.
APIs · Syncing · Automated workflows
Let's talk about your idea03
Traceability and compliance
I design auditable records, evidence and histories for complex operations, environmental management and compliance-driven processes.
Audit trails · Evidence · Process control
Let's talk about your idea04
Data and reporting
I organize your data and turn it into metrics, dashboards and automated reports that show what's happening in your operation.
Dashboards · Metrics · Automated reports
Let's talk about your idea05
AI for your operation
I integrate assistants and agents into your systems to look up information, support tasks and trigger actions with oversight and traceability.
Agents · Assistants · AI workflows
Let's talk about your idea06
Architecture and evolution
I review your platform, map out a technical path and support its evolution: architecture, infrastructure, deployments and continuous improvement.
Technical assessment · Cloud · Operational continuity
Let's talk about your idea03 /How we work
How I work with you.
A shared path, with clear decisions and progress you can try for yourself.
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Understand the process
I listen to the people who do the work. We map tasks, friction points and what needs to change.
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Organize the information
We clarify data, business rules and priorities to define a useful scope.
- 03 /
Design the solution
We connect architecture and user experience, and validate the flow before building.
- 04 /
Build and validate
I deliver in increments your team can review and test with real cases.
- 05 /
Automate and measure
We integrate systems, cut manual tasks and make results visible.
- 06 /
Improve and scale
I support the rollout and the platform's evolution alongside your operation.
NestJS
Laravel
NextJS
StyleX
shadcn/ui
TanStack Query
Zustand
Flutter
Tauri
MySQL
PostgreSQL
Google Cloud
AWS
Docker
Mailjet
WebGL
Android
Vite
Godot
Google Maps
MapLibre
Odoo
PM2
TypeScript
PHP
Dart
Rust
Keycloak
OAuth
JWT
Let's talk about your project
Make software work for you.
Tell me what's holding your team back: a task that keeps repeating, numbers that don't add up or a platform you've outgrown. Let's review the process and agree on a concrete first step.
Tell me what you need
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