12/16/2025 updated

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Head of Engineering / Senior iOS Developer

Barcelona, Spain
Worldwide
Barcelona, Spain
Worldwide

Profile attachments

CV Alejandro Gelos 2026.pdf

About me

iOS lead 12+ years of experience

Agile MethodologyArchitectureUnit TestingBusiness Process ImprovementProgramming ToolsProject ManagementModel View ViewModelObjective-C (Programming Language)Scrum MethodologySoftware ArchitectureUser Interface TestingTestingTest-Driven Development (TDD)SwiftuiIos FrameworksSwift (Programming Language)BackendKanbanCore DataIntegration TestsSolid PrinciplesTeam ManagementFront End Software DevelopmentCode Refactoring
iOS Development
Native iOS development with 12 years of experience using Swift, SwiftUI, and Objective-C

Software Architecture
Clean Modular Architecture, MVVM, MVP, VIPER, SOLID principles implementation

Leadership and Management
Team leadership, people management, and coordination of development teams across multiple locations

Testing Methodologies
Unit Testing, Integration Testing, UI Testing, Test-Driven Development (TDD)

Development Tools
Core Data, FetchResultController, Async Await implementation

Agile Methodologies
Kanban and Scrum methodologies for project management

Backend Technologies
Experience with backend, frontend, and designer team coordination

Process Improvement
Code refactoring, legacy code modernization, and development process optimization

Languages

EnglishFluentSpanishNative speaker

Project history

iOS Tech Lead Architect

Schneider Electric
Design, develop and maintain core modules and pipelines consumed by all teams using clean modular architecture. 70% coding SwiftUI and 30% management of multiple teams at different locations.

Head of Engineering

Fyrrr
Managed backend, frontend, designer, and devops teams for a TikTok-inspired learning application. Focused on MVVM, testing, modular code, and accelerated video loading speeds. 70% coding SwiftUI 30% management.

Senior iOS Developer

eBay Kleinanzeigen
Member of Team Gold iOS, contributing to the buying & selling app using SwiftUI.

Senior iOS Developer

Wallbox
Refactored the electric car charger app to Modular Clean architecture using Swift. Developed new charger features and refactored testing.

Senior iOS Developer

PEP
Worked on developing new features for an open-source encrypted email client. Focused on CoreData, FetchResult Controller, process improvements, and followed MVP + TDD.

Senior iOS Developer

NetQuest
Managed the refactor of legacy code to MVVM + Testing for a Swift-based web activity tracking application.

iOS Team Lead

Oktana
Led the development and maintenance of TOK and Snapins using Swift. Built an MVP + testing for Snapins and TOK, and created a drone prototype app for cattle.

iOS Developer

Technisys
Developed the Itau Bank app for Argentina/Uruguay using Objective-C. Worked at ING Bank office in Argentina.

iOS Developer

Altimetrik
Contributed to the development of an iOS framework and a Hospital app using the Altimetrik framework.

iOS Developer

TCS
Gained initial iOS knowledge, worked on internal iOS projects, and developed new functionalities for a hospital app using Objective-C.

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