INDEPENDENT SOFTWARE ENGINEER · SPAIN

I BUILD COMPLEX
WEB SYSTEMS

Custom backend development, API integrations, business automation and AI-assisted workflows for projects that go beyond standard websites.

I work primarily with web studios and digital agencies that need an experienced engineer for technically challenging backend work.

Valencia, SpainWorking with agencies across Europe.

Problems I Solve

Typical projects I help with

Legacy PHP
Modernization

Understand, extend and modernize existing systems without unnecessary rewrites.

Complex API
Integrations

Reliable integrations with third-party services and business systems.

Multi-Supplier
E-commerce

Aggregation, synchronization and pricing across multiple suppliers.

Business
Automation

Backend workflows replacing repetitive manual operations.

Custom CMS
Development

Commercial CMS development and long-term evolution.

AI-assisted
Workflows

Production LLM integrations supporting business processes.

Engineering stories

Selected Engineering Projects

Each project explains the business challenge, engineering decisions and practical trade-offs behind the implementation. Client identities and sensitive implementation details are intentionally omitted.

Centralized Product Information System

  • Multi-source product aggregation
  • Custom business logic
  • Production AI workflow
  • SEO content generation
  • Long-term maintainability
Read story
Three suppliers feed a processing system, product database and PrestaShop Supplier 1 (API) Supplier 2 (CSV) Supplier 3 (XLS) Import & Processing PrestaShop Product DB

Custom Content Management System

More than 10 years of continuous evolution. A custom CMS powering approximately 300–500 commercial websites with multilingual content, SEO tools and business-specific workflows.

Read story

Multi-Supplier E-commerce System

Automating product imports, category mapping and supplier synchronization inside a long-running commercial e-commerce platform.

Read story

Engineering approach

How I Think

I focus on understanding the real problem before choosing the technology. My goal is to build systems that are reliable, maintainable and practical for the business — not to introduce complexity for its own sake.

Working Together

How I fit into agency projects

Project ownership

Take responsibility for the technical implementation.

Existing teams

Join ongoing agency projects when additional expertise is needed.

Async communication

Git, tickets, documentation and structured written communication.

Legacy systems

Comfortable working with existing codebases.

Confidentiality

Commercial information remains private.

Long-term Maintainability

Solutions designed to be understood, extended and maintained by other developers.

Technologies

Tools, not positioning

  • PHP 8.4
  • MySQL
  • JavaScript
  • REST APIs
  • Linux
  • Git
  • XML
  • CSV
  • Cron
  • LLM APIs
Elena TC, Web Systems Engineer

About

Why I enjoy this work

I prefer systems that evolve over years rather than projects that end after launch. My focus is long-term architecture, business logic, integrations and maintainability—not producing websites as quickly as possible.

Contact

Let's discuss your project

Get in touch