Hackathons compress the entire product journey into a short period of time. A problem must be understood, an idea must become a plan, the plan must become working software, and the software must be presented clearly enough for other people to see its value.
That pressure can feel intense, but it also makes important engineering lessons impossible to ignore.
My hackathon journey has included winning first place at the Cursor Hackathon organized by BIT, winning first place at the Vodacom Mini Finckhathon and qualifying for its final phase, and earning third place at the MozDevz Build Local Hackathon. The podium results are meaningful to me, but the most valuable part has been learning how to make better decisions when time, information, and resources are limited.
Pressure makes priorities visible
In a normal project, it is easy to imagine that every feature is essential. A hackathon removes that illusion. There is never enough time to build everything, so the team must identify the smallest experience that proves the solution is useful.
This changes the first question from “What can we add?” to “What must work for the idea to matter?”
That distinction taught me to separate the core problem from the features surrounding it. A clear user journey, a reliable central function, and a convincing demonstration are more valuable than many unfinished capabilities.
Building fast begins with understanding
Speed does not come only from writing code quickly. It comes from reducing uncertainty before the implementation becomes expensive.
Who is experiencing the problem? What is the current alternative? Which assumption is the most important to test? What would make someone trust the solution?
When these questions are ignored, a team can move quickly in the wrong direction. When they are discussed early, technical choices become easier because they are connected to an outcome instead of personal preference.
The fastest team is not always the one that writes the most code. It is often the one that understands what should not be built.
Communication is part of engineering
A good prototype can still fail to communicate its value. Hackathons taught me that presentation is not something added after the engineering work; it is part of the work.
The team needs a shared understanding of the problem, clear ownership of tasks, and frequent communication about blockers and trade-offs. The final presentation must connect the user’s reality to the product decisions and demonstrate why the solution deserves to exist.
Explaining a technical choice also tests whether that choice is truly clear. If we cannot explain why a feature matters, we may need to reconsider it.
Local context changes the product
Building solutions for real communities requires attention to language, connectivity, digital literacy, trust, and the tools people already use.
A technically impressive product can still be inaccessible. Hackathons strengthened my interest in building technology that responds to local realities, especially in Mozambique. This means thinking beyond the ideal device or perfect connection and designing for the conditions in which people will actually use the product.
Results are evidence, not the destination
Winning is encouraging because it shows that the problem, execution, and presentation connected with the judges. But each result also reveals the next level of work: stronger validation, cleaner architecture, a more focused demonstration, or a better explanation of impact.
The real value of a hackathon continues after the event. It appears in the habits carried into future projects: deciding with purpose, collaborating openly, building the essential experience first, and remaining calm enough to learn under pressure.
Hackathons taught me that good engineering is not only about building fast. It is about deciding what matters before time runs out.