He blames Western companies for illegally hoovering up tuna fish off Somalia's coast and says that European criminal gangs have dumped toxic waste along it.
After a year spent hoovering up information from traders and making some suggestions of his own, Mr Esteves was given his own berth on the trading floor.
In the past it was common for firms to indulge in large-scale recruitment programmes: hoovering up the most talented students from business schools en masse, often for indeterminate roles.