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Diego Curumaco

@diegocurumaco

Senior iOS Engineer at Smartjob, where I helped grow BCI Pyme’s monthly active users by 100%.

At Smartjob, I develop and maintain features for BCI Pyme, a business banking app used daily by thousands of people. I delivered in-app support chat and automated financial processes that reduced operational costs, and the app grew its monthly active users by 100%.

At XumaK (Wunderman Thompson), I led the small iOS team that built the first version of Empower for ISN Software Corp. from scratch. I defined requirements and architecture with the client's iOS architect and built reusable UI components.

At Startrack, I was lead iOS engineer for Startrack Tracker, Startrack Supervisor and Formularios, taking them from architecture through App Store release. I reduced crashes by 90% and built background location tracking, geofences and offline tracking.

I’ve also shipped more than 10 apps to the App Store, including my SwiftUI project BlurryBerry: Blur Faces. I use AI-assisted development tools including Claude Code and GitHub Copilot in my daily work.

Experience

Work history, roles, and key accomplishments

Current

Senior iOS Developer

Current

Smartjob

Jun 2022 - Present (4 years 4 months)

Develop and maintain features for a production business banking app used daily by thousands of users, in a UIKit codebase using Clean Swift (VIP), working in Scrum with UX/UI, QA and backend teams. Delivered an in-app support chat and automated financial processes that reduced operational costs; the app grew monthly active users by 100%.

UIKit Clean Swift (VIP)Scrum Keychain Face ID Touch ID LaunchDarkly Deep Links Alamofire URLSession Claude Code GitHub Co Pilot

Lead iOS Developer

XumaK (Wunderman Thompson)

Nov 2021 - May 2022 (6 months)

Led the small iOS team that built the first version of Empower from scratch: ISN's app for frontline workers to check jobsite compliance, complete trainings and manage credentials, now live on the App Store. Defined requirements and architecture with the client's iOS architect; built reusable UI components that sped up the team; ran code reviews and coordinated tasks to hit deadline-critical miles

iOS Architecture Code Review Team Leadership UIKit Swift

iOS Developer

MyPostcard GmbH

Jun 2021 - Oct 2021 (4 months)

Migrated legacy Objective-C code to Swift and fixed high-priority production bugs. Implemented A/B tests to validate new features, added postcard editor features and UI animations, worked with background tasks and deep links, and published releases.

Swift Objective C A B Testing Background Tasks Deep Links UI Animation

iOS / Flutter Developer

Startrack

May 2017 - May 2021 (4 years)

Lead iOS engineer for Startrack Tracker, Startrack Supervisor (iPhone and iPad) and Formularios, owning the full cycle from architecture to App Store release. Reduced crashes by 90% and improved performance through memory and concurrency management.

iOS Flutter CoreLocation MapKit Core Data Swift Objective C Mentorship

iOS / Web Developer

LionMane Software

Oct 2016 - Apr 2017 (6 months)

Shipped Jot (Just Open and Type), a bullet journal app, to the App Store. Built iPad wine catalog apps with multimedia content (including Vinu) used by hotels to present their wine lists; developed a React Native MVP for a client; mentored web developers on iOS.

iOS React Native Web Development Mentorship

Jr. iOS Developer

Milk'n Cookies (now Tribal MnC)

Feb 2016 - Oct 2016 (8 months)

Built and published the Domino's Pizza Guatemala ordering app and Hugo for Pasmo, a medication tracker, in Swift with storyboards, XIBs and REST APIs; maintained existing Objective-C apps.

Swift Objective C Storyboards Xibs REST APIs