Browse freelancer contest mobilePekerjaan

...<Technology Description> In this technology, the vehicle is equipped with a warning device that warns of an approaching object approaching the vehicle. However, the alarm by the warning device is not performed when the relative speed of the detected approaching object is less than a predetermined value (e.g., if the detected approaching object is a human). Please search for this technology in this contest. <<NOTICE>> The target car brands in this search are limited to US, European, Chinese, and South Korean brands. <Requirements for Payment> ・Submit documentary evidence that clearly states the details of the subject product, the name of the company selling the product, and the company that plans to sell the product. Documentary evidence includes websites...

In need of a proficient ReactNative developer with remarkable experience in building end-to-end mobile apps and publishing it on both stores. Key Deliverable • Compile the existing project developed in ReactNative, Upgrade to Latest version of ReactNative. • The App is already published, and hence project is to compile the app again freshly for AppStore and Google Play. • Minor fix of UI with respect to resolutions. • The key purpose of this mobile app is to provide information to its users. Therefore, the candidate should have prior experience in building user-friendly and intuitive informational mobile applications. • Additionally, familiarization with the latest mobile application development tools and trends will be beneficial...

In need of a proficient ReactNative developer with remarkable experience in building end-to-end mobile apps and publishing it on both stores. Key Deliverable • Compile the existing project developed in ReactNative, Upgrade to Latest version of ReactNative. • The App is already published, and hence project is to compile the app again freshly for AppStore and Google Play. • Minor fix of UI with respect to resolutions. • The key purpose of this mobile app is to provide information to its users. Therefore, the candidate should have prior experience in building user-friendly and intuitive informational mobile applications. • Additionally, familiarization with the latest mobile application development tools and trends will be beneficial...

Project Description: We are looking for a freelancer to develop a website requiring a multi-user login system for a platform with consultants. On this platform, both freelancers and clients will be able to log into their accounts and access relevant features. Tasks: Development of a multi-user login system Design and development of client and freelancer user interfaces Management and editing of user profiles Ensuring job posting and application processes Implementation of security measures and protection of data privacy Requirements: Experience in front-end and back-end web development Knowledge of multi-user session management Experience in security measures and database management Preferably experience with similar projects Communication skills and problem-solving abilit...

...to create a website and mobile application for a B2B hotel wholesaler named HIBEDS. The key features required for the project are: - Simply the introduction of our company, business models, hotel products, services, and technology, and contact information - a portal on the website to link our B2B booking site which has already been developed by our inhouse tech team Please communicate with me about the design style to make the design in harmony with our B2B booking site. Freelancers interested in this project should include the following in their application: - Portfolio of past work - Previous experience in similar projects - Detailed project proposal The ideal candidate should demonstrate experience in B2B platform building. Experience in both web and mobile app de...

I am looking for a skilled marketplace web site and App designer to create a marketplace for contractors. Please send your offer, your experience and links of similar projects that you have developed. Thank you so much.

Seeking a skilled freelancer to set up a dedicated online presence for our local unisex hair salon business. Currently part of a larger domain, we're moving to our own space. We've acquired a theme, domain and will manage hosting. Maximum of 5 pages of content optimised and re-written from existing sub-page on a barber specific domain. Your tasks: upload to host, format database, install wordpress, transfer content, and launch. Urgency required, completion by week's end. To apply please explain to me what you think I am looking for and tell me your middle name. automated offers which have not read and considered my content will not be considered. Success opens the door for ongoing projects across our business ventures.

My project is focused on increasing customer engagement for individual consumers through a well-designed mobile application. Thus, I'm searching for talented developers who can deliver innovative mobile app design and function that keep consumers engaged and motivated to use the application relentlessly. Key requirements: - App to be designed for iOS and Android devices - User-friendly interface with smooth navigation - Incorporation of features to track consumer engagement and deliver personalized experiences - Secure user data management - Regular updates and troubleshooting when necessary Ideal Skills: - Proven experience in mobile app development, especially consumer-focused applications - Expertise in creating user-friendly interface - Strong understanding ...

this is my website , Currently, the loading time for my website sits between 2-4 seconds, which I'm looking to improve. Specifically, I'm having problems with both the Largest Contentful Paint (LCP) and the First Content Paint (FCP) and I want to manipulate these to optimize my site's speed. The troubles seem to be stemming from issues with loading images, media, and text. Key tasks include: - Speeding up image and media load times - Optimizing text and fonts to load faster - Ensuring LCP and FCP are improved, vis-a-vis Google PageSpeed Insights or similar testing methods Ideal candidates for this project should have: - Proficiency in WordPress - Understanding of website speed optimization techniques - Robust knowledge of SEO - Experience with image/media and text/font op...

Game Title: Orange Arena Game Overview: Two teams of five players endlessly each fight on a small arena. Each have their own bunker with an armory full of weapons, consumables, and perks to equip. HARD REQUIREMENTS: Thumbnail should be 1920x1080 minimum (16:9 aspect r...background was to have it be a fractal, 3D cubes, hexagons, 3D pillars, or some other kind of geometric shapes. Basically I wanted something that was clean and simple while also standing out among the other thumbnails which are almost entirely 3D action scenes of Fortnite characters. BUT if you look at the screenshots and get a good idea then please go for it. The main reason I decided to create a contest on here instead of doing it myself is because I kept seeing cool and unique ideas while browsing stock image...

Our company is focused on providing services related to construction and gutter installations. We are looking to create an e-commerce platform where: - Clients can browse through our varied services for construction and gutter installations. - Details about each service we offer will be provided, aiding our customers to make informed decisions. - Our portfolio on the website will demonstrate our capabilities and expertise in web development. - A seamless checkout process for booking services is a necessity. The ideal candidate for this project should have experience in e-commerce website development especially for service providers. Understanding of web development aesthetics in the construction industry will be a plus. We want our digital presence to mirror our physical experienc...

I'm looking for a skilled telemarketer to help my mobile car detailing business reach our primary target audience - individual vehicle owners. Our focus is our local city and surrounding suburbs. Key Requirements: • Ability to formulate detailed project proposals • Knowledge of local city and surrounding suburb markets • Proven track record in engaging individual vehicle owners effectively Previous experience in telemarketing for similar services will be advantageous. Your application should include a detailed project proposal outlining your approach and strategies.

I'm looking to create a specialized NFT marketplace. This platform will be based on Ethereum, dedicated to Photographic art. The marketplace should facilitate: - User creation and authentication: It is vital that users have a secure profile where they can manage their collections. - Listing and browsing NFTs: It should be easy for creators to list their NFTs, and for buyers to browse and search available works. - Auctioning and bidding: An essential feature is an auction and bidding system, driving competition and reflecting the true value of the art. Ideally, I would like to work with someone who has prior experience in blockchain technology, specifically Ethereum, and NFT marketplace development. A deep understanding of smart contracts and a passion for photography is a mus...

...array of features proves that BG Online School Management Software is the undisputed global leader. Here are a few reasons why you should choose us: -- Affiliate Program for Extra Income -- Comprehensive Staff, Teacher, Parent, and Student Management -- Robust Accounting and Administrative Services -- Dedicated Website Page for Subscribers -- Employee and Student Recognition Features -- Free Contest Program -- Integrated Security System with Visitor Badge Creation -- Childcare Management -- Zoom and Google Meet Integration -- Tutorial and Library Management -- Transport and Hostel Management -- Sponsorship and Announcement Features -- Multiple Payment Gateway Integration -- Online Admission and Complaint Management -- Data Import Functionality -- Asset and Inventory Management...

...Applications: Provide talents with the ability to browse available projects and submit applications based on their preferences. Messaging System: Incorporate a messaging system to facilitate communication between talents and brands for project coordination and negotiation. Rating and Review System: Implement a rating and review system to ensure accountability and credibility within the platform. Payment Integration: Integrate a secure payment gateway for seamless transactions between talents and brands upon project completion. Notification System: Enable real-time notifications for project updates, messages, and other relevant activities. Additional Information: The application should have a user-friendly interface, optimized for both web and mobile platforms. Ensure scal...

...usability and adapt the mobile version of my website. Specifically, I'm focusing on the following features of the plugin: Directory search User registration Handling of extensive taxonomies Additionally, it has come to our attention that the mobile performance of our website is being affected by this plugin. Therefore, the developer must identify any performance issues and optimize the code of this plugin accordingly. Since the mobile-adapted website will be used by our registered users, it's crucial to ensure an intuitive, user-friendly interface. Your efforts will lead to an overall improved experience for our users as they navigate through our site on their mobile devices. Ideal Skills: Strong knowledge of WordPress and DirectoryPress plugin ...

We're looking for a designer to recreate our mobile app's current PNG graphics/icons/buttons (around 25 in total) as SVG files while improving their quality. The project calls for strong attention to detail and proficiency in graphic design and SVG file creation. The successful freelancer will have demonstrated experience in vector art creation and design improvement, with a strong understanding of resolution enhancement. Please note that maintaining the current aesthetic, dimensions, and color scheme of the PNG files is essential in this project.

I'm looking for a seasoned mobile application developer to build a financial services application for both iOS and Android. The primary functionality will be centered around facilitating various financial services, and the platform must include user registration and secure login features. Skills Required: - Proven experience in cross-platform mobile application development, particularly for financial services apps - Proficiency in creating smooth, intuitive user interfaces - Deep understanding of iOS and Android platform specifications - Strong focus on security, specifically in relation to user registration and login features - Experience integrating mobile applications with back-end financial systems Your bid should include an estimate of the number of hours...

"Estoy en busca de un/a desarrollador/a freelance con experiencia en GitHub para subir mi proyecto a esta plataforma. Necesito ayuda para configurar el repositorio, agregar la documentación necesaria y asegurarme de que todo esté correctamente organizado. Si tienes experiencia en GitHub y estás interesado/a en este proyecto, ¡por favor ponte en contacto conmigo! ¡Espero trabajar contigo pronto!

I am looking for a talented and experienced Hybrid app developer with a strong background in creating applications for startup businesses. We need someone reliable who can work with us in our Hyderabad office. Key details: * The main purpose of the app is to serve as a platform for our Startup. * As we skipped on listing specific features or functionalities, we want someone who can bring innovation and creativity to our project. * Willingness to work onsite is an absolute must. Ideal candidate: * Experience in Hybrid app development is mandatory, a background in startup platforms would be a huge plus. * Exceptional problem solving abilities, ability to work in a team-driven environment, and ready to take on challenges. * Comfortable with Agile methodologies and version control (GIT fo...

I am seeking a creative and experienced interior designer with expertise in industrial, vintage modern design aesthetics for my luxury car garage and office project. Key project elements: - Scope: The project involves designing all the rooms in my residence, including the living room, kitchen, and bedrooms. - Deliverables: Mood boards and a comprehensive design layout for each room, basic 3D visuals, color scheme recommendations, furniture arrangement suggestions and a list of suitable materials and light fixtures. Designers with a demonstrated ability to translate client ideas into beautiful, functional design spaces are highly desired. Your ability to work within a budget while sourcing high-quality materials and furnishings would be advantageous. - Style: I prefer a modern int...

I need a skilled digital marketer to manage my Facebook and Instagram marketing campaigns. Core Responsibilities: Develop and implement innovative and effective strategies aimed at lead generation and increasing conversions. Expertly craft campaigns that resonate with the target demographic of middle-aged individuals (ages 36-55). Continuously monitor and refine advertising performance ...development, we have clients ready to benefit from your expertise. What We Offer: We are on the lookout for a highly skilled individual to embark on an initial project with the potential for a permanent, long-term collaboration. Finding a dedicated and effective partner in this field has been challenging, which is why we are committed to building a rewarding working relationship with the right freel...

I'm facing issues with mobile Ad Exchange (ADX) ads not displaying, causing a low fill rate issue on Google Ad Manager. I'm seeking an expert in troubleshooting this particular problem. Your tasks will include: - Diagnosing the root cause of mobile ads not displaying on ADX - Providing solutions to increase the fill rate on Google Ad Manager - Implementing effective strategies to prevent similar issues in the future The ideal candidate would be someone with demonstrated skills and extensive experience in Google Ad Manager and ad serving troubleshooting. Expertise in ADX and mobile advertising platforms would be a major plus.

Logo Contest for "FigureUp" We invite talented designers to participate in our logo design contest for the Personal Care and wellness brand "FigureUp." We aim to create products that enhance the overall well-being of our customers. **Design Requirements:** 1. **Professional and Modern Aesthetic:** The logo should have a professional, modern, and stylish look that reflects the Personal Care and wellness nature of our brand. 2. **Focus on Comfort and Support:** Emphasize comfort, support, and functionality in the design. Elements representing posture correction, backbone stretching, and support for neck, collar, and wrists can be incorporated. 3. **Versatility and Recognition:** Create a logo that is versatile and easily recognizable. It should have a di...

...management and to improve user experience, User and provider apps along with a management dashboard are required. Additional features for user and provider apps should include: - Push notifications - Rating and review system to ensure feedback and constant improvement - Appointment reminders to minimize no-shows and last-minute cancellations. To excel at this job, you need: - Strong experience in mobile app development across both iOS and Android platforms. - Experience integrating online payment systems. - Familiarity with developing real-time scheduling tools. - Track record of creating apps with users and provider functionality. - Knowledge of creating and working with dashboards. - Experience implementing push notifications, rating and/or reviews, and appointment remind...

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I am seeking a dedicated mid-level freelancer, to complete my exisiting project. You must have 2-3 years of solid experience with the following technologies; .NET Core 7, Angular 16, EntityFrameworkCore MySQL and C#, HTML, CSS, Typescript. Key Requirements: - Proficiency in .NET Core 7, Angular 16, EntityFrameworkCore MySQL and C#, HTML, CSS, Typescript - Mid-level (2-3 years) work-experience required. - Strong evidence of past experience. Only apply if you have ample experience in the mentioned technologies. Interviews will be conducted by my Project Manager.

I'm looking for an experienced Unity developer, ideally someone who has hands-on experience with the Photon multiplayer engine. - Strong proficiency in Unity game development - Need to reskin our singleplayer game source code to Multiplayer using PHOTON

...space providers and renters. Profiles should include basic information about available pallet spaces and ratings/reviews from other users. Login and Identification: Login function with BankID or similar authentication method for secure access to the platform. Space Listing and Search: Capability for businesses to list their available pallet spaces for rent and for other companies to search and browse available spaces based on criteria such as location, price, and availability. Booking and Payment: Functionality to book pallet spaces directly through the platform and manage payments securely. Payment options include a fixed monthly fee or a small percentage of each transaction facilitated through the platform. Communication: Built-in communication feature enabling easy and sec...

Hi Wordpress Rock Star, I noticed your profile and would like to offer you my project. We can discuss any details over chat.

I need a proficient app developer to create a streamlined eCommerce application for both iOS and Android platforms. Key App Functionalities: - Seamless eCommerce integration: The app should provide a user-friendly interface for customers to browse and purchase products. Ideally, the developed application should support multiple payment gateways and real-time inventory updates. Ideal Candidate Qualifications: - Extensive experience in developing cross-platform mobile applications - Proven track record in eCommerce integration - Exceptional proficiency in iOS and Android app development - Strong understanding of user interface design principles and attention to detail Please note, there's no requirement for a user login system in this app. This should simplify the app ...

I need a qualified developer to produce a mobile application and website (Dashboard template will be provided) that can access data records from my continuously updated local Microsoft SQL Server. Both solutions should allow for real-time data extraction and display. Key Requirements: - Develop a mobile application compatible with the latest smartphones. - Create a responsive website that can be accessed on various devices. - The apps need to accurately access and display data from a Microsoft SQL Server data base. Ideal Skills and Experience: - Proficiency in mobile application development (iOS and Android Operating Systems) - Skilled in web-based programming languages such as HTML, CSS, JavaScript, and PHP. - Strong understanding of database connectivity and manip...

Hello Freelancers, We are seeking experienced smartphone users to test various Android/iOS apps for 24 hours and provide us with their honest feedback (confidentially). The feedback will be used by our development team to improve the apps before launching them. Please read this notice before applying to learn more: Key aspects to focus on: - User interface: Is the layout intuitive and attractive? - Performance and responsiveness: How fast does the app respond to commands? Any bugs or does it run smoothly? - Features and functionality: Which features are useful, which are not? What's missing that could enhance functionality? Requirements: -You must be older than 18 years -You must be an experienced Android/iOS user -You must have at least 5 apps installed on your smartphone that y...

I need a qualified developer to produce a mobile application and website (Dashboard template will be provided) that can access data records from my continuously updated local Microsoft SQL Server. Both solutions should allow for real-time data extraction and display. Key Requirements: - Develop a mobile application compatible with the latest smartphones. - Create a responsive website that can be accessed on various devices. - The apps need to accurately access and display data from a Microsoft SQL Server data base. Ideal Skills and Experience: - Proficiency in mobile application development (iOS and Android Operating Systems) - Skilled in web-based programming languages such as HTML, CSS, JavaScript, and PHP. - Strong understanding of database connectivity and manip...

I'm in need of a comprehensive UI/UX design for a mobile application. The idea revolves around creating a simple, yet engaging app that will predominantly serve age range of 18-55. Key project requirements: - Extensive experience in Figma UI/UX mobile app design - Strong understanding of current design trends appealing to all the ages - Ability to design simple, clean, and minimalistic user interfaces The chosen freelancer will convert my basic idea into a visually appealing, intuitive, and easy-to-use mobile application. I welcome innovative ideas and encourage freelancers to infuse their creativity into this project. This project could be a perfect fit if you have previously designed user interfaces and experiences for delivery apps. Your portfolio de...

...developer to create a mobile application tailored for middle school students focusing on three main areas of mathematics: Algebra, Geometry, and Basic Arithmetic. The application should be interactive, user-friendly, and engaging to help students understand and practicalize these mathematical concepts. I envisage an app designed to test and improve their mathematical abilities through regular quizzes and tests. Details include: - The primary users of the app will be middle school students, so the interface must be engaging and suitable for that age group. - The quiz should cover topics like Algebra, Geometry, and Basic Arithmetic. - The app should be operative on all standard mobile platforms, such as iOS and Android. Ideal Skills/Experience: - Strong background in m...

Seeking an experienced mobile app tester to thoroughly examine an application which functions on both Android and iOS systems. The main objective is to ensure our app functions seamlessly on both platforms, maintaining efficiency and effectiveness at all times. Attributes of the ideal candidate: - Proven experience in mobile app testing. - In-depth understanding of Android and iOS operating systems. - Excellent understanding of testing strategies and methodologies. - Ability to identify and document technical issues. - Vigilant and detail-oriented. Although there is no strict time limit for this project, prompt results and updates are still very much appreciated. You'll have the freedom to work at your own pace, while ensuring the project objectives are met. Ov...

Hi Web&Mobile App Developers, I noticed your profile and would like to offer you my project. We can discuss any details over chat.

I'm seeking an experienced Google Ads professional to elevate my marketing efforts. Primarily, the focus of this campaign should be to significantly boost sales of my physical products. The ideal candidate will have: - Proven expertise in developing and managing successful Google Ads campaigns, specifically for physical products. - An understanding of ecommerce marketing tactics and strategies. - A strong track record of effectively reaching domestic markets with advertisements. In this role you will: - Help me devise a results-driven strategy to increase sales via Google Ads. - Develop tailored advertisements for our physical products targeted at domestic customers. - Continuously monitor and optimize our campaigns to ensure high ROI. I believe a partnership with a knowledgable G...

...upcoming week my goal is to publish a freelancer project on this site, but I am not sure with skills I should require and with me being extremely clumsy with words nowadays I am struggling to put what I need into writing. So basically the goal of this project is for someone to help me write the goals for the next project (which I will call THE MAIN PROJECT). In the main project I want to find the freelancer who will help us do a B2B company presentation (pdf) in English, which will be sent to approximately 20 companies. I would also need help with writing an email which I will send to Leeds (the presentation will be an attachment to this email). Additionally, please help me understand how much such work should be evaluated. I know I am searching for a freelancer th...

Hi guys, Thanks for your interest in writing for us. IMPORTANT: Human writing only - No AI or Rewriting - (we check) AGAIN BECAUSE THERE ARE SO MANY CHEATERS: NO AI - NO UNDETECTABLE AI AS WE STILL SEE - DON'T WASTE YOUR OR OUR TIME IF YOU DON'T WRITE MANUALLY !!! What we offer: *Ad-hoc writing work at the entry rate of $20/1000 words with room for growth. *Flexibility: No Skyping, no phone calls, accept projects when you have the time to complete them, take time off when you need (letting us know in advance is good practice). *Easy to work with: We reply to questions fast, will provide valuable input and feedback on every single task you complete. *We've been in the content writing and marketing business for 15 years and have worked with more than 2000 clients. A...

Hi Web&Mobile App Developers, I noticed your profile and would like to offer you my project. We can discuss any details over chat.

I am looking to develop a mobile application targeting specifically young adults. While certain features have not been pre-determined or defined, the app should be engaging, user-friendly, and compatible for both iOS and Android platforms. Ideal Skills and Experience: - App development for youth-oriented platforms - Understands interface design for younger demographics - Can offer ideas on potential features based on previous successful projects Please keep in mind the target demographic during the bidding process, as it is vital the app appeals to young adults for its success.

I am looking for a professional who can verify the accessibility of my e-commerce website from Singapore, specifically on mobile devices. My site involves online shopping and transactions, so seamless functionality and easy navigation is a must for my users. Skills and Experience Required: - Proven experience testing website accessibility, preferably e-commerce sites. - Familiarity with the mobile web environment. - Knowledge of accessibility issues and solutions in Singapore area. Tasks: - Carry out comprehensive accessibility testing from a mobile perspective. - Analyze website performance in terms of user interface and user experience. - Report on any issues found and potential solutions for the associated problem. I am specifically looking for local testing,...

...und Browsern vor der Veröffentlichung. Anforderungen an den Freelancer: - Nachweisliche Erfahrung in der Erstellung von Landing Pages, die auf Lead-Generierung ausgerichtet sind, vorzugsweise im Bereich Cannabis oder ähnlichen Branchen. - Kreativität in der Gestaltung und die Fähigkeit, ein ansprechendes Design zu entwickeln, das unsere Zielgruppe anspricht. - Starke SEO-Kenntnisse, speziell im Kontext der Cannabis-Industrie. - Effiziente Arbeitsweise und die Fähigkeit, eng mit unserem Team zu kommunizieren und Feedback umzusetzen. Zeitrahmen: Die Landing Page sollte bis ende April 24 fertiggestellt und einsatzbereit sein. Bitte geben Sie in Ihrem Angebot Ihre geschätzte Fertigstellungszeit an. Bewerbung: Interessierte Freelancer sind her...

... - Exact replication: The platform should duplicate all standard features such as feed, friends, settings, searches, messages and groups, as seen on Facebook. No customizations or additional features are needed. - Cross-Platform: The social media application should be operable both on web browsers and mobile devices (iOS, Android), delivering a seamless user experience on every device. - Technology Stack: While the project doesn't require a specific technology stack, the chosen freelancer should suggest the most suitable one to accomplish the task efficiently and effectively. Ideal candidates for this project are those who possess in-depth understanding of social media platform development, proficiency in cross-platform app development, and sufficient exposure to d...

Welcome to the Camatures Wedding Logo Design Contest! We're seeking a unique logo for our wedding photography business, focused on immortalising precious moments. Business Name Title : Camatures Weddings Please note: Do not use Canva templates or any pre-used templates, and also do not generate logos using AI prompts I. We're looking for original designs only. You can use traditional symbols like cameras OR rings, but we're open to creative interpretations. The winning logo will embody professionalism and creativity, appealing to couples seeking an exceptional photographer. Unleash your creativity and capture the magic of weddings in your design. We're excited to see your unique creations! Please ensure to deliver the final design in the following formats:...

I am seeking a professional, experienced game developer to create a comprehensive mobile poker game. While I have not specified the particular style of poker for the game, I am open to suggestions and recommendations from the expert developer. Key project requirements include: • Creation of a user-friendly, engaging mobile poker game app • High proficiency in mobile game development • Knowledge in various poker game styles – being able to suggest the most desirable style for the game. Can be Texas Hold’em, Omaha Hold’em or Seven-Card Stud. • Ability to complete the project within a month This project offers an exciting opportunity for skilled developers with a strong understanding of mobile gaming and a passion for p...

...dedicated developer experienced in creating mobile games that are comparable to the popular game, Candy Crush Saga. - **Game Genre:** The game should fall under the puzzle category, emphasizing problem-solving and strategic play. - **Gameplay Mechanics:** The primary mechanics should resonate with puzzle-solving facets. Ideally, your previous work would contain elements of successful puzzle games. - **Specific Features:** The game should have, among other things, a leaderboard to foster competition among players and in-app purchases to monetize the game. Please ensure your proposal includes samples of previously completed mobile game projects, especially those within the puzzle genre. The right freelancer for this project is experienced, proficient in mobil...

Je voudrais développer une application mobile pour une entreprise de taxi