we are carr3ira
information systems are the backbone of decision-making, and our specialty is keeping yours strong, secure, and smart.
Your online presence deserves more than just space — it deserves attention.
Modern tech. Bold ideas. Pixel-perfect execution.
About
hello, I'm Francisco Carreira đź‘‹ carr3ira is my developer alias. in a crowded digital ecosystem, i build what gets noticed.
this is our logo, an ensō. an old japanese symbol. the ensō embodies openness and discipline, imperfection and mastery. in our work, it’s a reminder that technology isn’t just built — it’s shaped with vision, creativity, and precision.
Work
Check out what I've been working on.
Research @ CISUC
Since 2023, I have been a researcher at the Center for Informatics and Systems of the University of Coimbra (CISUC). My current research focuses on decentralized autonomous organizations (DAOs), blockchain technologies, and information systems. I am also a member of the Association for Information Systems (AIS).
TEDxEntroncamento
In 2023, I coordinated a TEDx event and developed a custom ticket sales platform that streamlined the registration and payment process for attendees. The platform was designed to handle high demand smoothly, provide clear event information, and deliver automated confirmations, making the experience simple and reliable for both organizers and participants. This solution helped boost ticket sales efficiency and improved overall event management.
Web3Grad
In 2023, I founded Web3Grad, a project aimed at contributing to the growth of the Web3 ecosystem by expanding the pool of skilled developers. I built the initiative from scratch, taking it from concept to the seed stage. Working closely with Web3 experts, I identified students' needs and designed a comprehensive syllabus focused on Solidity and Smart Contract development. I also created tools to deploy ERC-compliant tokens, enabling on-chain certification and providing students with verifiable credentials.
Sara Eustáquio Portfolio
In 2025, I designed and launched the portfolio website for filmmaker Sara Eustáquio— a Los Angeles–based Portuguese director, cinematographer, writer, and editor with award-winning shorts like "Mirror," "Creation," and "Tempo." The site highlights her biography, filmography, gallery, and IMDb presence, with a clean, accessible layout, fast performance, and structured data to boost discoverability. I built an easy-to-update CMS for credits, laurels, and press assets, ensuring a professional hub that reflects her track record of 170+ festival awards and ongoing work in LA.
Viva o Entroncamento!
In 2025, I designed and launched the official website for a local political party, focusing on clear communication, accessibility, and user engagement. The platform was built to highlight the party's values, programs, and initiatives while ensuring easy access to news, event updates, and membership information. I also implemented tools for online forms and newsletter subscriptions, strengthening direct connection with supporters and improving overall outreach.
For The News
In 2021, I helped creating and single-handedly edited "For The News", a Portuguese gaming news segment hosted by Marta Casaca (RTP Arena, PlayStation Portugal). Edited content for the "For The Win Esports" official YouTube channel, for SportTV, and reported directly to the CEO.
Portuguese Weightlifting Federation (FNH)
In 2025, I designed and launched the official website of the Portuguese Weightlifting Federation (FNH), creating a modern, accessible, and user-friendly platform to represent the federation online. Later that year, I proposed and developed FORTIUS, a streamlined system that simplifies and centralizes athlete registrations for national competitions, improving efficiency and reducing administrative workload.
eCMR blockchain-based management system
Between 2023 and 2024, under the master's program in informatics engineering, minor in information systems, I developed an eCMR blockchain-based management system under the "Agenda NEXUS" innovation program, funded by the Portuguese Recovery and Resilience Plan (PRR). The system was built using Express.js for the backend, deployed on the Polygon blockchain for secure and transparent document management, and integrated with Storj for decentralized storage. This solution digitizes the traditional CMR (Convention relative au contrat de transport international de Marchandises par Route) process, providing immutable records and streamlined logistics operations.
Soho Kids
In 2022, I acted as main developer for Soho Kids, a project aimed to connect the non-fungible world and the fashion industry. I designed the website and developed art generation algorithms to create different instances of artworks based on provided layers, using Canvas API and Node.js, with correct metadata, integrating Python. Oversaw the NFT minting process on the Cardano network, with over 20,000 incoming transactions.
Services
Thinking about working with me? Check out what I can do below and see how I can help bring your vision to life 👇
<Programming Languages />
One cannot simply make shit up and expect the computer to know what you mean... however, the languages listed here make the job easier.
- Python
- Java
- JavaScript
- HTML/CSS
- SQL
{ Blockchain }
Fun fact: the 3 in carr3ira stands for web3, the decentralized world. Just like blockchain itself, I promise this fact is immutable... unlike my code on Friday afternoons.
- EVM Development
- Smart Contracts
- Hyperledger
- Web3.js
- Ethers.js
DevOps & Tools
Fun fact: I once had a perfectly working container break in production. Turns out "it works on my machine" is still a valid excuse when that machine is Docker. Spoiler: it wasn't Docker's fault.
- Git
- Docker & Kubernetes
- Linux
- CI/CD
- AWS
Network
People are involved in information systems in just about every way. People imagine information systems, people develop information systems, people support information systems, and, perhaps most importantly, people use information systems.
"We were recommended carr3ira to be our developer by a profound team at jpg.store. They have been nothing but helpful, responsive, and flexible in the support he has provided to enable us to achieve the results we have. Francisco works to an incredible standard and is always more than willing to help and find a solution to whatever the matter. We look forward to continuing to work with him!"
Harry Cooke
Founder @ Scruffies
"Our paths crossed in January 2025, when Francisco contacted us offering IT support for a new project in the field of Weightlifting that we were starting. Since then until now, Francisco has been tireless, made a website for FNH in record time, super intuitive and modern. Created a platform from scratch to centralize athlete data, making the entire logistical process much less laborious. Very available and attentive. There is nothing we asked him that he couldn't put into practice."
Rita Antunes
President @ Portuguese Weightlifting Federation (FNH)
"He worked excellently, always delivering on time what was requested and with quality."
Ramiro TeodĂłsio
CEO @ For The Win Esports Club
© 2025 Francisco Carreira. All Rights Reserved.