Jesús Erro
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Services

Services for turning processes and data into useful software.

I can help you understand a problem, define a solution, and build a first version that can be validated and evolved.

Application consulting and development

Web applications, internal tools, and business systems designed around real operational needs.

  • Web applications and internal tools
  • Business applications
  • Evolution and modernisation of existing systems
  • Technical and architectural support

Process automation

Workflows that reduce repetitive work and connect browser automation, documents, and existing systems.

  • Browser automation
  • Document download and processing
  • Playwright workflows
  • System integrations

Tools: Playwright

Databases and data platforms

Models and integrations that turn dispersed information into traceable, maintainable structures.

  • Data modelling
  • Integration and ETL
  • Quality and traceability
  • Maintainable structures

Tools: PostgreSQL

AI-assisted software development

Development workflows with agents, explicit repository context, documentation, validation, and human supervision.

  • Repository context
  • Development agents
  • Documentation and validation
  • Human supervision

Tools: Claude · Cursor

Technical consulting

Pragmatic analysis and planning for solutions and modernisation work that can evolve safely.

  • Requirement analysis
  • Solution design
  • Process review
  • Pragmatic architecture
  • Modernisation planning

Working approach

Progress through context, validation, and control.

  1. Understand the problem. Clarify objectives, constraints, and context.
  2. Define a first vertical slice. Choose a small delivery that can demonstrate value.
  3. Build and validate. Test the result against real use.
  4. Document decisions. Keep operation and trade-offs understandable.
  5. Evolve incrementally. Extend the solution in a controlled way.