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Trabajo con varias aplicaciones en producción construidas en Dart y Xcode y necesito apoyo continuado para dos frentes muy concretos: 1. Mejorar el rendimiento • Analizar tiempos de respuesta y uso de recursos. • Refactorizar código y configuraciones que estén causando cuellos de botella. • Validar las mejoras con métricas comparativas antes y después. 2. Incorporar nuevas características • Desarrollar funciones específicas de negocio ya definidas en mis requisitos internos. • Pulir y modernizar la interfaz de usuario para ofrecer una experiencia más fluida y atractiva. Entrego acceso al repositorio (Git), lineamientos de arquitectura y ambiente de pruebas. Espero código limpio comentarios claros y, cuando sea viable, pruebas unitarias que cubran la lógica añadida. Valoro comunicación proactiva, documentación breve de cada cambio y disponibilidad para revisar avances de forma iterativa.
Project ID: 40432954
23 proposals
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Active 8 days ago
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Hola! Tengo más de 5 años de experiencia en desarrollo fullstack y puedo brindar apoyo continuo en lo que necesita
$150 USD in 14 days
3.9
3.9
23 freelancers are bidding on average $419 USD for this job

Hi, this project’s focus on improving Vue.js web app performance and extending features aligns with core engineering challenges I regularly address. The main engineering risk here is latency and resource bottlenecks impacting user experience under production load. I usually structure such projects by first isolating performance hotspots through profiling, then refactoring critical paths while ensuring clean, maintainable code. I’ve built several production systems where iterative performance validation and unit testing were essential. The Custom Feature Development & Integration project is particularly relevant, where I conducted thorough code reviews, implemented clean feature branches, and delivered automated tests and documentation. I recommend separating concerns between UI responsiveness and business logic layers to enable targeted optimizations and smoother user interaction. While this role doesn’t focus on LLM or AI, my approach to reliability includes clear code documentation and iterative validation to maintain long-term system health. I design systems for sustainable production use, emphasizing maintainability and clear communication. I can start by outlining a performance profiling plan, reviewing the current UI/UX flow, and sketching a refactoring roadmap for incremental improvements. Thanks, Hercules
$250 USD in 7 days
5.3
5.3

Hello, With over 7 years of experience in Vue.js, Dart, and Xcode, I specialize in enhancing web applications for improved performance and adding new features. I understand your requirement to optimize response times, refactor code, and integrate new business-specific functionalities while modernizing the user interface. Having expertise in full-stack development with technologies like Node.js, React, and React Native, I have a strong background in building scalable systems with a focus on real-time processing. My experience in low-latency architectures and data-driven applications aligns well with your project needs. Let's start a chat to discuss your project further and how I can provide a professional solution tailored to your requirements. Thanks.
$140 USD in 7 days
4.5
4.5

Entiendo que necesita soporte continuo en sus aplicaciones de producción construidas en Dart y Xcode, tanto para mejorar el rendimiento mediante análisis de tiempos de respuesta y refactorización de código, como para implementar nuevas funcionalidades específicas de negocio y modernizar la interfaz de usuario. Trabajaré directamente sobre sus repositorios Git, aplicando optimizaciones donde sea necesario y desarrollando las nuevas funciones con código limpio, comentarios claros y pruebas unitarias siempre que sea posible. Cada mejora se validará con métricas comparativas y se documentará brevemente para que pueda revisar los avances de forma iterativa y segura. Cuento con experiencia en optimización de aplicaciones móviles y desarrollo de funciones a medida en entornos Dart/Flutter y iOS nativo, garantizando eficiencia, estabilidad y una experiencia de usuario más fluida.
$600 USD in 5 days
4.1
4.1

Hola, Después de revisar cuidadosamente los requisitos de tu proyecto, entiendo perfectamente el alcance y las expectativas. Tengo experiencia trabajando en aplicaciones móviles en producción con Dart, Xcode y flujos de mantenimiento evolutivo, y puedo comenzar de inmediato. Cuento con sólida experiencia en Dart, Xcode, Mobile App Development, Objective C, .NET, Git, Vue.js y optimización de aplicaciones iOS con más de 10 años de experiencia. Uno de los principales retos en proyectos como este es mejorar rendimiento sin afectar estabilidad, especialmente cuando ya existen usuarios activos y una arquitectura establecida en producción. Mi enfoque sería analizar primero métricas reales de rendimiento, detectar cuellos de botella en lógica, rendering, consumo de memoria o configuraciones de compilación, y luego aplicar mejoras medibles con comparación before/after. También puedo desarrollar nuevas funcionalidades siguiendo tu arquitectura actual, manteniendo código limpio, documentación breve y pruebas unitarias cuando tenga sentido. Tengo un par de preguntas rápidas. • ¿Las aplicaciones están desarrolladas principalmente en Flutter/Dart o combinan módulos nativos en Objective-C/Swift? • ¿Ya utilizan alguna herramienta de métricas o profiling para medir rendimiento actualmente? Estaré encantado de conversar más detalles y comenzar inmediatamente. Quedo atento a tu respuesta. Saludos, Carlos
$30 USD in 7 days
2.7
2.7

Hello, I can provide ongoing support for your Dart and Xcode apps, focusing on both performance improvements and the addition of new features. For performance, I will analyze response times and resource usage, refactor code or configurations causing bottlenecks, and validate improvements with before/after metrics. For new features, I will implement your defined business logic and polish the UI to enhance usability and visual appeal. I deliver clean, well-commented code, include unit tests where applicable, and provide brief documentation for every change. I’m proactive in communication and can review progress iteratively with your team through Git and your testing environment. Thanks.
$140 USD in 7 days
2.3
2.3

With my wide range of skills and practical experience in Full Stack development, specifically in the MERN stack, I am confident that I can contribute to your project by not only improving the performance of your existing applications, but also by incorporating new features to deliver a more efficient and streamlined user experience. My proficiency in Git perfectly aligns with your need for access to the repository, ensuring smooth collaboration and efficient version control throughout the project lifecycle. Moreover, with my background in Mobile App Development, I will be able to provide you with valuable insights on optimizing your code and configurations to ensure an improved user experience across both web and mobile platforms. My familiarity with technologies like Dart and Xcode allows me to fully grasp the complexities of your current project and address those challenges proactively. As a developer, I bring extensive experiences on analyzing response times and resource usage metrics to mitigate any bottlenecks. Undertaking code refactoring tasks will also be central to ensure improved system performance. Additionally, I am well-positioned to realize your business-specific functions while giving your interface a facelifttn order to provide 그 smoother an more attractive user experience. Let me show you how I can elevate your projects!
$30 USD in 3 days
2.1
2.1

Hola, Estoy interesado en actuar como su socio estratégico para el Mantenimiento y Ampliación Web Vue.js, con experiencia en Dart y Xcode para aplicaciones en producción. En el frente de rendimiento, realizaré un análisis detallado de tiempos de respuesta y consumo de recursos, identificaré cuellos de botella y propasaré refactorizaciones de código y configuraciones para optimizar la eficiencia. Validaré las mejoras con métricas comparativas antes y después y documentaré los resultados para facilitar la toma de decisiones. En el frente de nuevas características, desarrollaré las funciones de negocio definidas en sus requisitos internos y puliré la interfaz de usuario para una experiencia más fluida y atractiva. Siempre que sea viable, incorporaré pruebas unitarias que cubran la lógica añadida y mantendré código limpio con comentarios claros. Valoraré la comunicación proactiva, una documentación breve de cada cambio y disponibilidad para revisar avances de forma iterativa. Entrego acceso al repositorio Git, lineamientos de arquitectura y entorno de pruebas para empezar de inmediato. Estoy preparado para adaptarme a su ritmo y asegurar entregas iterativas y medibles.
$30 USD in 3 days
1.9
1.9

Hola! Estoy muy interesado en tu proyecto de mantenimiento y ampliación web con Vue.js y me gustaría ayudarte a optimizar y evolucionar tus aplicaciones en producción. Entiendo que el objetivo no es solo añadir nuevas funciones, sino mejorar el rendimiento general, mantener estabilidad en producción y modernizar la experiencia de usuario sin afectar la arquitectura existente. He trabajado en proyectos similares donde el éxito dependía de identificar cuellos de botella reales antes de refactorizar, especialmente en aplicaciones conectadas con entornos móviles y sistemas ya desplegados. Para tu proyecto, considero que la parte más importante es mantener una estructura limpia y escalable mientras se optimizan tiempos de respuesta, consumo de recursos y experiencia visual. Puedo ayudarte con análisis de rendimiento, refactorización de código, desarrollo de nuevas funcionalidades, mejoras UI/UX, integración continua con Git, pruebas unitarias y documentación clara de cambios para mantener un flujo de trabajo estable y colaborativo. Disponible inmediatamente | Timeline: soporte continuo con entregas iterativas | Budget: $20/hour Regards
$4,000 USD in 30 days
1.0
1.0

Dear Client, Good afternoon. How are you? I hope this proposal finds you well. I'M A CERTIFIED TECH/DEV & EXPERIENCED EXPERT, WELL VERSED WITH THE REQUIREMENTS FOR YOUR PROJECT TITLED "Mantenimiento y ampliación Web Vue.js." This is to inform you that I have KEENLY gone through your project description, CLEARLY understood all the project requirements as instructed in your project proposal and this is to let you know that I will perfectly deliver as desired. Being in possession of all stated required skills, (Xcode, iPhone, Mobile App Development, .NET, iPad, Dart, Git, Vue.js and Objective C), as this is my field of professional specialization having completed all certifications and developed adequate experience in the respective field, I hereby humbly request you to consider my bid for professional, quality and affordable services that meet all your requirements. I always guarantee timely delivery and unlimited revisions where necessary hence you are assured of utmost satisfaction when working with me. Please send me a message so that we can discuss more and seal the project. WELCOME.
$250 USD in 1 day
0.0
0.0

Hello, In my opinion, the problem of this project is that performance optimization and feature enhancement require a precise and methodical approach. I will analyze application performance metrics to identify bottlenecks, then systematically refactor inefficient code and configurations without altering the core architecture. For new features, I will implement them incrementally, ensuring a clean UI/UX with attention to user flow. I will incorporate unit tests where applicable to maintain code integrity and document each change succinctly. Deliverables will include refactored code, new features implemented per specifications, performance reports, and comprehensive documentation for all changes. I have successfully optimized and enhanced multiple Dart and Xcode applications in similar projects. I can start immediately. Regards.
$140 USD in 7 days
0.0
0.0

As an experienced web developer with a strong proficiency in Vue.js and a deep understanding of Git, I believe I'm perfectly suited to assist with your project. My skillset aligns perfectly with the two specific areas you are looking to address - improving performance and incorporating new features. Through my expertise, I can efficiently analyze response times & resource usage, refactor code, validate these changes with comparative metrics, and develop the specific business functions you require. Additionally, I have honed my skills in crafting sleek and modern UI designs that enhance user experiences with a knack for rendering clean, concise code that's easily maintainable. My commitment to open communication ensures I provide you with comprehensive updates throughout the process and concise documentation of every change made. I adhere strictly to your briefs while adding a touch of value with unit tests covering all added logic. Fastidious about timelines, budget, and quality alike, I can promise to dedicate myself wholeheartedly to this project. Let’s ensure your Vue.js web application achieves optimal performance while seamlessly merging in the desired additional functionalities!
$100 USD in 7 days
0.0
0.0

⚠️ If you're not happy, you don’t pay. ⚠️ Hi there, thank you for sharing your detailed project requirements. I can optimize and enhance your Dart and Xcode applications for peak performance and seamless user experience. I will deliver: • Performance analysis and resource usage optimization • Code refactoring to eliminate bottlenecks • Implementation of new business-specific features • UI enhancements for a more engaging experience You will also receive: • Clear documentation • Proactive communication • Iterative progress reviews I am confident I can execute your vision efficiently. Looking forward to discussing further steps. Best regards, Chirag.
$200 USD in 7 days
0.0
0.0

Hola, Entiendo tu necesidad de mantenimiento y ampliación para una web en Vue.js, con apoyo a aplicaciones en Dart y Xcode. Ofrezco una colaboración continua enfocada en rendimiento y nuevas funcionalidades, con entregables claros y comunicación proactiva. Solución propuesta: - Análisis de rendimiento: profiling de Vue.js y servicios, medición de tiempos de respuesta y consumo de recursos. - Optimización: refactorización de cuellos de botella, mejoras de configuración y caching cuando sea viable. - Validación: métricas comparativas previas/después y pruebas básicas de rendimiento. - Nuevas características: desarrollo de funciones de negocio definidas, integración con APIs y pulido de UI para experiencia fluida. - Calidad: código limpio, comentarios claros y, si es factible, pruebas unitarias cubriendo la lógica añadida. - Progreso y documentación: reportes breves de cambios y revisión iterativa de avances. Entregables: - Informe de rendimiento con métricas y recomendaciones. - Código refactorizado y modular, listo para revisión. - Implementación de al menos 1-2 features por ciclo de entrega y tests cuando aplique. - Documentación de cambios y notas de implementación. Presupuesto y timeline: - Tarifas: 25 USD/h (modelo de colaboración continua). - Estimación inicial: 40-60 h para fases tempranas (análisis + optimización + primera feature) | 2-3 sprints de 2-3 semanas cada uno. - Calendarización acordada tras revisión de alcance. Portfolio y experiencia: cuento con experi
$190 USD in 3 days
0.0
0.0

Hi, I can help you enhance the performance of your Dart and Xcode applications while also implementing new features. My experience in optimizing resource usage and response times will ensure we effectively identify and refactor any bottlenecks in the codebase. I'll deliver measurable improvements, validating them with comprehensive metrics before and after the changes. In terms of new features, I’ll develop tailored business functionalities per your specifications while refining the user interface for a smoother, more engaging experience. I prioritize clean code, clear documentation, and unit tests when applicable, ensuring maintainability and reliability. I’m committed to proactive communication and iterative reviews, providing you with consistent updates on progress. Let’s discuss how we can get started on this. Thank you.
$156 USD in 7 days
0.0
0.0

Hello! Allen from Fort Worth here. I understand how important it is to optimize the performance and enhance the functionality of your existing production applications in Dart and Xcode. Let's focus on identifying architectural bottlenecks and modernizing the user experience, while ensuring the highest code quality. The project will be built by performing deep profiling of your current resource usage to pinpoint latency issues before systematically refactoring the core logic. Additionally, I will focus on making the code more maintainable through unit testing and ensuring a scalable UI architecture that simplifies future feature rollouts. Performance is not just about speed; it is about creating a stable, predictable foundation that allows your business logic to scale without accumulating technical debt. Q1. Regarding the performance bottlenecks, are you seeing them primarily in the Dart runtime/UI thread or in the native bridge communication between Xcode and the Flutter engine? Q2. Do you have existing telemetry or logging tools like Firebase Performance Monitoring currently capturing these production metrics, or should we implement a custom benchmarking suite to track improvements? Q3. For the UI modernization, are you following a specific design system like Material 3 or do we need to implement custom painters to achieve the fluid, high-performance feel you are looking for? I'm excited to hear from you soon! Best wishes.
$750 USD in 7 days
0.0
0.0

Initial Performance Audit I will first review the existing Dart, Xcode, and .NET codebase to identify bottlenecks affecting speed, memory usage, and app responsiveness. This includes profiling API calls, UI rendering, background tasks, and resource consumption using Xcode Instruments and Dart DevTools. Code Refactoring & Optimization After identifying issues, I will refactor inefficient modules, optimize database/API interactions, reduce unnecessary rebuilds in Dart, and improve memory handling in iOS components. I will also review Git project structure and configuration settings to ensure maintainability and scalability. Performance Validation Before and after optimization, I will compare metrics such as load times, CPU/memory usage, and UI responsiveness. This ensures measurable improvements and provides transparency on the achieved results. New Feature Development Based on your internal requirements, I will implement business-specific functionalities while following your architecture guidelines and coding standards. The new features will be modular, clean, and easy to maintain. UI/UX Modernization I will enhance the application interface with smoother navigation, responsive layouts, and modern UI components in Dart/Vue.js to improve the overall user experience across iPhone and iPad devices. Testing & Documentation
$300 USD in 10 days
0.0
0.0

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