Joel Pigem Borrell

Fullstack Web & Mobile Developer | Symphonic Hub

Duration: 2+ Years

As a core member of the engineering team at Symphonic Hub, I have spent over two years architecting and maintaining complex digital ecosystems. My role focused on delivering seamless user experiences by bridging the gap between robust backend logic and high-performance frontend interfaces across web and mobile platforms.

Key Responsibilities & Achievements

End-to-End Development: Led the design and implementation of scalable web applications and native/cross-platform mobile apps from concept to deployment.

Cross-Platform Integration: Ensured feature parity and synchronized data flow between web dashboards and mobile environments, optimizing for real-time performance.

API Architecture: Built and maintained secure, RESTful APIs to power high-traffic applications, ensuring 99.9% uptime and efficient data handling.

Performance Optimization: Improved application load times and mobile responsiveness by implementing best practices in code splitting, caching, and UI/UX design.

Agile Collaboration: Worked closely with stakeholders and design teams to translate business requirements into technical roadmaps, consistently meeting sprint deadlines.

Tech Stack Utilized

Frontend: React.js, Next.js, TypeScript, Tailwind CSS, HTML, Angular.

Mobile: SwiftUI, Kotlin, React Native / Flutter, iOS & Android deployment.

Backend: Node.js, Python , and PHP

Database & DevOps: PostgreSQL/MongoDB, AWS/Firebase, Docker, and CI/CD pipelines.

This is a great addition to your profile. Since you are the CEO and Lead Freelancer at PBDigital, you should highlight your leadership, project management, and your ability to handle the entire lifecycle of a product—from the initial idea to the App Store/Play Store.

Here is a high-impact description in English, tailored for a senior freelance profile on Malt:

CEO & Lead Fullstack Freelancer | PBDigital

At PBDigital, I lead the strategic direction and technical execution for a diverse portfolio of clients. Operating as a high-level independent consultant, I specialize in building "zero-to-one" products—transforming complex business ideas into scalable, production-ready applications.

Core Expertise & Service Offering

Strategic Technical Leadership: Acting as a fractional CTO for startups and businesses, advising on architecture, scalability, and the best tech stacks to achieve business goals.

High-Performance Mobile Development: Crafting premium mobile experiences using SwiftUI for native iOS precision and Flutter for high-efficiency cross-platform deployment.

Dynamic Web Solutions: Developing fast, SEO-friendly, and responsive web applications using React and modern frontend ecosystems.

Serverless Backend Architecture: Leveraging Firebase for real-time databases, authentication, and cloud functions to ensure rapid deployment and effortless scaling.

End-to-End Delivery: Managing the full product lifecycle, including UI/UX consultation, API integration, and successful App Store/Play Store submissions.

Featured Tech Stack

Mobile: SwiftUI (Native iOS), Flutter (Cross-platform).

Web: React.js, Next.js, JavaScript/TypeScript.

Backend/BaaS: Firebase (Firestore, Auth, Cloud Functions, Hosting).

Tools: Git, App Store Connect, Google Play Console, Figma.