Sebastian Villahermosa

Sebastian Villahermosa

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iOS Developer
Córdoba, Córdoba Province, Argentina
Contact Sebastian regarding: 
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Full-time jobs
Starting at USD1.5k/month
Flexible work
Starting at USD10/hour
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Internships
Starting at USD500/month
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Timeline

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Résumé

Jobs verified_user 0% verified
  • Redfin
    iOS Engineer public Remote experience
    Redfin
    Jan 2026 - Current (10 months)
    • Own end-to-end feature integration across the full lifecycle — implementation, testing, CI/CD, and post-launch monitoring — with
    high autonomy in a cross-timezone team
    • Served as formal on-call owner for a full rotation, triaging and resolving production issues independently while a senior tech lead
    shadowed
    • Regularly designed and ran A/B testing experiments targeting lead conversion, implementing feature variants and analyzing
    outcomes to inform product decisions
    • Enhanced analytics coverage by implementing and refining event tracking across key features, using user-driven actions as
    reference points
    • Participated in audit processes and bug bashing sessions for new features, ensuring quality s
  • N
    iOS Developer public Remote experience
    Navi Innovation Labs
    Jul 2025 - Current (1 year 4 months)
    Civify is a geolocated audio guide mobile application that transforms smartphones into personal travel guides, allowing users to explore cities, historical landmarks, and cultural sites through immersive, GPS-triggered narrated routes and interactive maps.

    - Migrated the payment layer from StoreKit 1 to StoreKit 2, modernizing transaction handling and resolving critical checkout issues including unexpected server responses.
    - Designed an on-device IAP persistence layer using Keychain to handle payment-backend desync scenarios, enabling users to recover interrupted purchases by retrying tour creation without generating duplicate or stale transactions.
    - Delivered new Tour flow features including free-of-charge place sele
  • Banco Hipotecario
    Desarrollador de iOS public Remote experience
    Banco Hipotecario
    Aug 2023 - Jan 2026 (2 years 6 months)
    - Identified and resolved bugs and UX issues, implementing redesigns that significantly enhanced user experience in the bank's iOS application using UIKit and SwiftUI.
    - Modernized legacy screens with updated technologies while maintaining seamless user experience and minimal disruption.
    - Integrated Salesforce MarketingCloud SDK to support push notifications, in-app messaging, and abandoned cart event handling, coordinating directly with third-party providers and producing comprehensive implementation documentation.
    - Architected and implemented a modular rich push notification system supporting both Firebase and Salesforce MarketingCloud as independent providers, enabling extensible multi-source notification handling.
  • R
    iOS Developer
    Rabbet Gaming (US)
    Jul 2022 - Dec 2022 (6 months)
    App development with UIKit using both storyboards and programmatically designed interfaces
    Application maintenance, debugging, refactoring code from MVC to MVVM
    Deployment to testflight for testing
    - Utilized Agile methodologies, Jira, and Confluence to manage development tasks, technical documentation, and sprint planning.
Education verified_user 0% verified
  • U
    Electronic Engineering
    Universidad Nacional Experimental Antonio José de Sucre UNEXPO
    Jan 2018 - Jan 2020 (2 years 1 month)
Projects (professional or personal) verified_user 0% verified
  • N
    UIKit to SwiftUI Migration (MVP to MVI Architecture)
    Navi Innovation Labs
    Jul 2025 - Current (1 year 4 months)
    Migration to a newer, iOS 18 version on pure SwiftUI with MVI+Coordinators