Derek Calloway

Revenue operations lead at a Series B fintech in Austin. Previously four years at Apollo.io running the RevOps function — built the data enrichment pipeline, owned the CRM stack (HubSpot + Salesforce), and managed the SDR tooling. Writes about AI in ops workflows since 2024, after wiring CommanderGPT into the team daily deal review process.

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1 tool by Derek Calloway.

• Ops productivity systems

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  Generator Rumus Excel: VLOOKUP, SUMIFS & IF Instan

  1 Juli 2026

  Berhenti menebak sintaks Excel. Generator rumus Excel ini mengubah tujuanmu jadi rumus VLOOKUP, SUMIFS, IF, atau TEXTJOIN yang tepat, dijelaskan dengan bahasa yang mudah dipahami.