Freelancer profile translated to English.

Description

Senior iOS + Backend | Tech Partner | MVPs and Critical Features for Startups

Available for demo access in production (iOS + FastAPI) and repo upon request for technical audit.

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How I can help you:

- **End-to-End Reinforcement**: I quickly integrate into your team to unblock functionalities on iOS and backend.

- **Rescue and Stabilization**: Diagnosis and resolution of crashes or blocks in the App Store.

-Technical Evaluation(code and architecture): Risk analysis and actionable plan.

- **Launch (MVP)**: From idea to production.

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My differential value: Criterion and Autonomy

- More than 7 years in startups like **Cabify**.

-Swift + SwiftUI(native iOS apps), andPython + FastAPI(backend).

- Simple, complete, maintainable, and scalable solutions, avoiding costly technical errors.

- I have experience developing and maintaining apps and backend features with a high volume of users, managing the entire cycle: definition, development, App Store releases, experimentation, and iteration.

- No "lock-in", you will always own the deliverables and can decide to change providers if you deem it appropriate.

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Examples of deliverables:

- Complete feature (backend + iOS) integrated into an existing product.

- Refactoring of modules (iOS/backend) to improve development speed.

- Initial architecture document (high-level) + justified technical decisions.

- Identification of risks and priorities.

- Phased execution plan (MVP → iteration).

- Complete feature (backend + iOS) integrated into an existing product.

- Technical audit with an actionable plan in 5–7 days.

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How I work:

- Focus on product impact, not just code or technical fixes.

- Iterative deliveries from the first week.

- Clear communication and technical decisions aligned with business goals.

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If you are looking for someone who executes autonomously and delivers real value in weeks, let's talk.

Industry field of expertise

Languages

Spanish
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Madrid (up to 50km), Madrid (up to 10km)

ClickNBack
Software Engineer
January 2026 - Today (5 months)
- Development of an iOS application (SwiftUI) connected to a proprietary backend (FastAPI).
- Modular architecture design (MVVM) for scalability and maintainability.
- Implementation of networking layer (REST APIs, JWT authentication, error handling).
- Modern state management and navigation in SwiftUI.
- Implementation of caching and offline-first strategies.
- Backend design and development (Python + FastAPI): REST APIs, database (PostgreSQL), atomic transactions, authentication, background jobs, event-driven communication.
- Containerization with Docker and deployment on a Linux server (VPS).
- Implementation of complete authentication flow (login, refresh token).
- End-to-end product development: from idea to production operation (CI/CD pipelines and monitoring).
- Unit, integration, and end-to-end tests across the entire stack (app + backend).
SwiftUI REST API external-api-integration ci-cd-management backend-service-development
Cabify
iOS Developer
August 2021 - July 2025 (3 years and 11 months)
- Development of iOS applications with Swift, SwiftUI, and UIKit, delivering high-impact features for millions of users.
- Collaboration with product and design teams to define and iterate on features based on metrics (Amplitude) and real feedback.
- Utilization of modular architecture and patterns like VIPER and TCA, improving scalability and maintainability.
- Integration with REST APIs, with a strong focus on contract design, performance, and state management.
- Definition and development of complete backend features (BFFs and microservices).
- End-to-end ownership: development, testing, weekly App Store releases, and production monitoring.
- CI/CD management (Bitrise) and release manager role, ensuring reliable deliveries.
- Improvement of stability and quality through observability, incident resolution, and reduction of technical debt on client and services.
SwiftUI REST API ci-cd-management backend-service-development microservices-architecture
Loycus
iOS Developer
February 2020 - July 2021 (1 year and 5 months)
- Development of an iOS application from scratch (MVP → production) with Swift and UIKit.
- Launch of the first version on the App Store, focusing on user experience (UX) and product-market fit.
- Implementation of features aimed at engagement and retention.
- Use of product metrics (Amplitude) and user feedback for product evolution.
- Collaboration with Android, product, and design teams in an agile environment.
- Management of bi-weekly releases and incident resolution with Apple.
- Integration with REST APIs and client-side data management.
REST API UX/UI external-api-integration UIKit