You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Mauricio VazquezMV

Mauricio Vazquez

Supermalter

Senior iOS Developer

300 €/día
2 proyectos
Barcelona, ES
8-15 años

Tiempo medio de respuesta: 1h

Acerca de Mauricio

Super Malter 3 iOS developer - trusted for project success
(earned through consistently high client ratings: on-time delivery, product quality, clear communication and repeat business)

————

Senior iOS Developer · 12+ years experience
I build and ship reliable, maintainable iOS apps using Swift & Objective-C, with modern UI and reactive architectures (SwiftUI, RxSwift). I’ve worked on high-scale projects - including for France’s largest online marketplace - delivering features used by millions.

What I do best
• Architect and implement production-ready iOS apps (from greenfield to legacy refactors)
• Pixel-perfect UI with SwiftUI / UIKit (SnaKit or custom solution) and reactive flows using RxSwift
• Robust testing: unit tests, TDD practices and stability improvements
• CI/CD pipelines and release automation (Fastlane, automated builds & tests)
• Performance tuning, codebase modernization, and maintainability-focused refactors

Why hire me
• Proven track record (Malter Level 2) showing repeated client satisfaction and successful deliveries
• Clear communicator who integrates with product, design and backend teams
• Fast ramp-up on existing codebases and pragmatic, production-minded engineering
  • Inglés

    Bilingüe o nativo

  • Español

    Bilingüe o nativo

Acepta trabajo presencial
Barcelona (hasta 50 km)

Experiencia

  • Leboncoin.fr
    iOS engineer @ Leboncoin
    abril de 2025 - Hoy (1 año y 2 meses)
    Paris, Francia
    iOS Developer – Ad Tech & Monetization | Leboncoin.fr

    Client: Leboncoin (Advertising Squad)
    Role: Freelance iOS Engineer
    Scope: Ad delivery, monetization features, experimentation


    Key Contributions:
    • Developed and maintained in-app advertising features for iOS, supporting monetization at scale
    • Built A/B tests to optimize ad formats, placements, and performance on iOS
    • Collaborated with backend, data, and product teams to improve ad delivery and user experience
    • Worked on optimizing ad loading, display logic, and conversion tracking
    • Contributed to a high-traffic app serving 28+ million monthly users in France
    iOS Swift SwiftUI
  • Rakuten TV
    Senior iOS Engineer
    diciembre de 2022 - febrero de 2025 (2 años y 2 meses)
    Barcelona, España
    iOS Engineer – Video Streaming & Monetization | Rakuten.tv

    Client: Rakuten.tv
    Role: iOS Engineer
    Scope: App stability, ad delivery, conversion optimization


    Key Contributions:
    • Reduced app crash rate to below 1%, improving overall iOS stability and user retention
    • Integrated and delivered ad rolls (pre-, mid-, post-roll) in movies and series to boost monetization
    • Built A/B tests to improve movie purchase conversions, experimenting with pricing, CTAs, and placement
    • Ran separate A/B tests for subscription flows, optimizing onboarding, and UI
    • Contributed to core app architecture and user experience for a global streaming audience
    iOS Swift Apple TV
  • Woonkly
    Lead iOS Engineer
    enero de 2022 - diciembre de 2022 (11 meses)
    Barcelona, Spain
    Designed and built an iOS app from scratch. I followed TDD, CI/CD, SOLID, Clean Architecture. We are using: SwiftUI, Combine, Snapshot Testing, Unit Testing, Github Actions.

Reseñas

5,0

de 2 valoraciones

S

Shanshan

Engineering Manager Team Advertising - Leboncoin - Spain sourcing

Proyecto de más de 1 mes

-

Revisado el 2/2/2026

Mauricio is an experienced iOS developer with good technical skills, while working on framework refactoring, he showed a clear and well-structured understanding of the work, which made it easy to move forward. From May 2025, he started working on more product feature development. He delivers reliable work, communicates clearly, and collaborates well with others, especially with AdTech and QA. Over time, he became more autonomous and proactive. He communicates early, creates tickets when needed, and can manage his tasks with limited supervision. When issues appear, he takes responsibility and focuses on fixing them quickly. Overall, his contribution and attitude have been very positive. Based on this, we decided to renew his contract for an additional 6 months at the beginning of 2026. On a personal level, he is curious, motivated, and continues to integrate well into the team and our daily work.
S

Shanshan

Leboncoin - Spain sourcing

Proyecto de menos de 1 año

-

Revisado el 12/11/2025

Mauricio is an experienced iOS developer. From the very beginning, he made great efforts to understand the project and integrate into the team. He learns quickly, adapts easily to new development environments, and communicates effectively. His autonomy and proactive attitude have brought significant value to our project

Recomendaciones

Sé el primero en recomendar a Mauricio

Ayuda a este freelance a destacar compartiendo tu experiencia.

Estos perfiles de freelance también coinciden con tus criterios

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Formación

  • Bachelor of Science
    University of Arkansas at Fayetteville
    Bachelor of Science - BS
  • Associate of Science in Programming
    Northwest Arkansas Community College
    Associate of Science - AS

Conjunto de habilidades profesionales

Categorías