This topic collects freelance work and practical writing about working independently in Spain. The articles cover questions that foreign professionals often ask when planning a move or registering an activity. They reflect the date on each article, so check current official rules before acting on administrative guidance. The collaboration entries document client work, including LactApp and Vertex Agility.
For a broader view of client engagements, see the collaborations archive. The contact page explains how to reach me about software or product work.
Read the guides in context
The administrative articles were written from experience rather than as a substitute for a current official procedure. Requirements for residence, tax registration and social security can change. The links to Spanish government sources in the articles are there so readers can check the current form and instructions for their own situation. The older examples still explain why these questions arise and what information to gather before speaking to an adviser.
The collaboration records are a different part of this topic. They show freelance engineering in practice, from consumer apps to identity and platform work. For a focused view of banking questions, open the banking topic. For every client entry, browse collaborations.
