Hi, I'm Tiago.
I run Freelance Coder, providing practical technical support with data management, websites, spreadsheets, APIs, artificial intelligence and automation.
Practical technology for real problems
I enjoy working with information, systems and technology to find clearer and more efficient ways of doing things.
A project might involve organising a large spreadsheet, cleaning and restructuring data, converting information between formats, improving a website, connecting services through an API or automating work that would otherwise have to be completed manually.
I prefer practical solutions over unnecessary complexity. Sometimes the answer is code. Sometimes it is a well-organised spreadsheet, a cleaner data structure or simply a better way of managing information.
Logic, accuracy and organisation
My background includes qualifications in bookkeeping and Pure Mathematics at A level.
Both have influenced the way I approach technical work: methodically, logically and with close attention to detail.
01. Pure Mathematics
Logical reasoning, abstraction, pattern recognition and structured problem solving.
02. Bookkeeping
Accuracy, organisation and careful management of structured financial information.
Organising information
Data management is an important part of the work I do. I can help clean, organise, restructure and convert information so that it becomes easier to understand, search, maintain and reuse.
This can include spreadsheets, structured datasets, website information and a variety of common data formats.
Websites and web technology
I can support websites and online projects using common web technologies, whether the work involves presentation, functionality, data or connecting a website to another system.
APIs, AI and automation
APIs and automation can remove unnecessary repetitive work and allow different systems to exchange information more effectively.
I can also support projects involving AI prompts, AI-assisted workflows and AI agents, especially where artificial intelligence needs to work alongside existing data, websites, spreadsheets or APIs.
API Integration
Connecting websites, applications and external services.
Automation
Reducing repetitive work through scripts and automated workflows.
AI Prompts
Designing clear instructions and structured AI-assisted workflows.
AI Agents
Using AI alongside tools, data and automated processes.
Excel and Google Sheets
Data organisation
I can help organise large or complicated spreadsheets into clearer, more structured datasets.
Cleaning and restructuring
This may include correcting inconsistent information, restructuring tables or preparing data for use in another application.
Imports and exports
I can also work with data moving between spreadsheets, CSV files, websites and other systems.
Affiliate marketing and digital projects
I can also provide technical support for affiliate marketing and online publishing projects.
This can involve organising product information and affiliate links, working with structured data feeds, preparing information for websites or spreadsheets and automating repetitive publishing or data-management tasks.
Good technology should make things easier. My approach is to understand the problem first, organise the information properly and then use the most appropriate technology to solve it.
Make information work better.
If you have data that needs organising, systems that need connecting, repetitive processes that could be automated or a technical problem that needs a practical solution, I may be able to help.
