← Back to PeopleEngineerMark JenSoftware Engineer at MetaLinkedIn@markjenA software engineer at Meta with specialties in Go, iOS/Objective-C, Ruby, Java, Python, JavaScript, HTML, CSS, and PHP.1Mentions1Articles1OutletsCompanies CoveredMeta1OpenAI1Thinking Machines Lab1ArticlesMost recent firstMentioned InReferenced in coverageMeta poached three more employees from Mira Murati's Thinking Machines LabBusiness InsidernegativeApr 22, 2026“Founding team member at Thinking Machines Lab who was hired by Meta; previously worked at Meta.”