Jacob Saulo Nyirenda (born June 21, 1997) is a Tanzanian youth recognized by the pseudonyms Jacobgijjah or Jeco across social media platforms. He holds a Bachelor of Science degree in Information Systems (BSc.IS) from the University of Dodoma (UDOM) and is recognized as a proficient software developer with a fervor for crafting web application systems.

Nyirenda's interests extend beyond technology; he is an avid basketball player and harbors a deep passion for literature, particularly in topics spanning knowledge, lifestyle, adventure, and programming. Notably, he actively contributes to the Swahili Wikipedia, dedicating his expertise to various projects.