Freelance iphone application developer jobs

...to have a Solana token staking dAPP developed specifically for the web platform. The key functionalities to be included in this application are: - User Dashboard: The application should provide a user-friendly dashboard where token holders can track their staking activities, monitor rewards, and make necessary transactions. - Real-time Staking Statistics: Users should be able to view real-time statistics related to staking on the Solana blockchain. This could include information on current staking rates, total staked tokens, and historical data. The primary mode of user interaction with the dAPP will be through wallet connection. It's essential that the application allows users to connect their wallets (e.g., Metamask, Sollet) for seamless and secure access ...

I'm seeking a seasoned SharePoint developer who has a strong background in graphic design. The primary goal of this project is to enhance the document management capabilities of our SharePoint system. Key Requirements: - Extensive experience working with SharePoint - Proven background in graphic design - Ability to understand and implement specific design requirements Ideal Skills: - Proficiency in SharePoint customization - Strong command of SharePoint migration best practices - Capability to develop and deliver SharePoint training sessions Your role will involve: - Customizing our SharePoint system to improve document management - Using your graphic design skills to create visually appealing, user-friendly interfaces - Implementing specific design requirements to meet ou...

I need an experienced Laravel developer to undertake crucial tasks within a large-scale project over a two-week timeline. The Laravel-specific requirements are as follows:- 1. Fix the Home Dashboard to display real data instead of dummy data in Laravel. 2. Implement form data transfer from the website to the CRM Enquiry Menu in Laravel. 3. Ensure that won enquiries are correctly displayed after conversion to contacts in Laravel. 4. Highlight the current menu item on the left in Laravel. 5. Correct CSV download functionality in Contacts, ensuring filters, headers, and special characters are handled properly in Laravel. 6. Enable clicking anywhere on the contact data table to open the view of that particular contact in Laravel. 7. Remove the display of the last date from the top of t...

I'm in search of a mid-level Python developer with prior experience in building WhatsApp Flow APIs, specifically focusing on data processing and exchange features. Key Responsibilities: - Building a WhatsApp Flow API: The primary task will be to develop a WhatsApp Flow API from the ground up. The API should be capable of processing and exchanging data effectively. - Implementing Data Processing and Exchange Features: A key requirement of this project is the ability to process and exchange data efficiently. Ideal candidates will have a track record of integrating such features into APIs. - Deploying on an On-Premises Server: The final product needs to be deployed on an on-premises server. This means the developer should have experience with, or be willing to learn, on-pr...

...picture, name, bio, and all your artwork displayed like Instagram's profile section in square blocks. Also add a section just like reels wherein you can showcase your process of creating a particular artwork in short video format. You can add more features as you see fit. I have provided some sample images of the type of vibe of UI that I'm looking for. Use neutral color scheme. Please select 'iPhone 15 pro max' for your screen frames and prototype device. I would need the Figma file link as your work submission on this email: reetakosta@gmail.com. The successful freelancer must be well-versed in Figma and possess a good portfolio showcasing previous UI design work, preferably within a similar realm. I wouldn't be able to pay much since this project is...

I was trying to make this website using chatgpt. i could reach to below point There are more services to add, but basic concept is the same. no dynamic feature. on the booking page, there should the map to locate the exact location. all the selected services the and contact details should be delivered to mail id. need to focus on ux/ui

I need an experienced React Native developer to create a caller ID mobile app, compatible with both iOS and Android, mirroring the core functionality of Truecaller. The key features I'm looking for include: - Caller ID: This is the main feature of the app. It should effectively identify and display caller information. Additional information: - My app will need to integrate with external APIs for contact information. This is crucial for the effectiveness and accuracy of the Caller ID feature. The ideal freelancer should: - Have demonstrable experience with React Native development. - Be well-versed in working with external APIs and integrating them into applications. - Be able to create a sleek, user-friendly mobile app that mimics the key functionality of Truecaller. Budge...

I'm looking for a dedicated game tester to play and provide feedback on a casual mobile game. Key Responsibilities: - Play the game extensively on both iOS and Android platforms - Identify and record any issues or bugs encountered during gameplay - Provide detailed reports on your findings - Suggest improvements for overall user experience Ideal Candidate: - Must own an iPhone or Android mobile - Previous experience in game testing or quality assurance is a plus - Excellent attention to detail - Good communication skills to articulate issues and suggestions for improvement.

I am looking for a skilled backend developer with expertise in NodeJs for the development of APIs and their integration into a mobile app. Key Tasks: - Developing APIs: The primary task is to develop APIs that are robust, secure, and efficient. - Mobile App Integration: The APIs need to be seamlessly integrated into a mobile app, ensuring that they function optimally and provide a smooth user experience. Skills Required: - Proficiency in NodeJs: The ideal candidate should have extensive experience working with NodeJs to develop APIs. - Mobile App API Integration: Previous experience integrating APIs into mobile applications will be a strong advantage. - Android and iOS Development: Being able to develop APIs for both Android and iOS platforms is essential for this project. Your ...

I am seeking a proficient blockchain developer who can assist me in creating a gaming-focused decentralized application (DApp) on the Ethereum network. Key Responsibilities: - Design and develop a user-friendly, interactive DApp that caters specifically to gaming - Ensure the DApp is secure, reliable, and performs efficiently on the Ethereum network - Collaborate with me to bring creative and innovative ideas to life in the DApp The ideal candidate should have: - Proven experience in developing DApps on the Ethereum network - A strong understanding of blockchain technology, smart contracts, and the Ethereum ecosystem - Prior experience in gaming-focused DApp development is highly preferred - Excellent communication skills and the ability to work collaboratively

I'm looking for an experienced Ruby on Rails developer who can handle key backend development tasks and manage our databases. The ideal candidate for this position should have: - Expertise in Ruby on Rails: We need someone who knows Rails inside out and can deliver high-quality backend solutions efficiently. - Database Management Skills: Experience with managing databases and optimizing their performance is crucial. - Problem-solving and Communication Skills: Excellent problem-solving abilities and effective communication are essential. - Experience with Rails 5.x, 6.x, or 7.x is a plus, but not a requirement. The main focus should be on your expertise and experience in developing robust and efficient backend systems using Ruby on Rails.

I'm in need of a top-tier JavaScript developer to work on a web application project for our startup company. Your primary focus will be on the front-end development, implementing a user interface in React and Vue. The ideal candidate for this job should have extensive experience with these frameworks and libraries, especially and Nuxt.js. Key requirements and responsibilities: - Develop new user-facing features using React and Vue - Ensure the technical feasibility of UI/UX designs - Build reusable code and libraries for future use - Optimize application for maximum speed and scalability Ideal skills and experience for this project include: - Senior level JavaScript development experience - Proficient with React, Vue, , and - Strong understanding of front-end...

Looking for an android developer Java,Kotlin,JSP, Servlets, MQ series, Hibernate, Python, Microservices, Swings, WebSphere-Portals, HTML5, Bootstrap, JavaScript, Bigdata, Linux Frameworks Android Mobile App Development, Spring boot, Struts, Hadoop This will be ongoing

I need a skilled developer to create a graph logic application in either Core PHP, JavaScript, or JQuery. The application will focus on visualizing user engagement data, specifically the bounce rate. Key Requirements: - Develop a graph logic application that utilizes Core PHP, JavaScript, or JQuery. - The system should effectively visualize user engagement data. - The application should specifically focus on visualizing the bounce rate metric. Ideal Skills: - Proficiency in Core PHP, JavaScript, or JQuery. - Experience in developing graph logic applications. - Understanding of user engagement metrics.

I'm looking for an experienced developer who can create a web and mobile application for a community-based project. This is a multifaceted project with a variety of requirements that aim to promote user interaction and engagement within the platform. Features & Modules: - User Registration & Login: A seamless process that allows users to sign up and access the platform with ease. - Messaging System: A built-in messaging system that enables users to communicate with each other. - Forums for Discussions: A space where users can create and participate in discussions, fostering a sense of community and collaboration. Third-party Integrations: - Payment Gateway: Integration of a payment gateway to facilitate any financial transactions that take place within the pla...

The main goal of this project is to improve our React application so it looks professional and has a better overall UX. Everything below should work on Chrome, Edge, Firefox and Safari of windows desktop, iPhone and android. Milestones will be created. Results card layout improvements: a) Currently, for layout with multiple laptops per row, it shows specs only on mouse-over, lets remove that and show that in the card itself, between the laptop image and the hyperlink of the laptop title. Lower the font a little bit and add a special css class to control the style of the specs. b) The cards need a bit more padding/margin so they dont look too crowded with information. Show Details popup: c) Show details popup needs to occupy 90% of the screen width showing the specs in two c...

I'm in need of a talented Senior Developer who has in-depth experience with both Boomi and Mulesoft. The primary goal of this project is to migrate our existing integrations to a new platform successfully. Key Requirements: - Proficiency in Boomi and Mulesoft: You should be well-versed in both platforms, able to navigate their functions and features effortlessly. - Migration Experience: Your role will involve transferring our existing integrations to a new platform. As such, experience with migration projects is essential. - System Integration: We're looking to integrate various types of systems, including CRM and ERP systems, custom applications, and third-party services. Your ability to connect these seamlessly is crucial to the project's success.

I'm in need of an experienced UI/UX designer with hands-on Developing skills using ReactNative. The mobile app will be developed for both Android and iOS platforms. Looking for support for Revamp work. If you're well-versed in these elements and have a knack for intuitive, user-friendly design, I'd love to see your portfolio and discuss this further. Location - Bangalore Ideal skills: - ReactNative development experience - UI/UX Design - Android and iOS development References of projects with a modern and sleek design would be a plus.

I'm looking for a talented Python & ML developer to collaborate on an exciting project. There are 2 Tasks 1 issues need to fix - which i will share with selected candidates

I'm seeking a Junior Frontend Developer, US based developer is preferred. Looking to hire someone: - has good communication skill - must be active on Slack - must be available on US working times Ideal Skills and Experience: - Proficiency in HTML, CSS, JavaScript - 1-2 years of experience in Frontend Development - Experience working with React and TypeScript - Familiarity with React Native and Angular, Vue, Node, Express, Database - Agile Methodologies like Scrum and Kanban... - Cloud experiences like AWS, GCP, and Azure. Thanks.

I am in need of a seasoned Python AI/ML developer who specializes in Natural Language Processing, specifically focusing on Text Classification. The task is complex and requires a high level of skill and understanding of AI/ML algorithms. Ideal Skills: - Proficient in Python - Strong experience with AI/ML - Expertise in Natural Language Processing - Track record of successful text classification projects - High attention to detail The successful candidate will deliver a robust and accurate Python AI/ML code that can effectively classify text materials. The developed software should accurately sort and classify written content according to specified categories. This could lead to further similar work for the right candidate. Your previous work experience in similar projects will be...

I have one Iphone issue and one on desktop on static bootstrap website. Dont bid if u dont have iphone as u will not be able to replicate.

I'm in need of an experienced Android developer to create a productivity app that primarily focuses on calculations. Key Features: - The app will be centered around calculation functions - Users should be able to make basic arithmetic calculations - The app needs to be user-friendly and intuitive for quick calculations Ideal Skills and Experience: - Strong background in Android development, proficient in Java or Kotlin - Previous experience building productivity apps - Prior experience working with calculation functions - A good understanding of UX/UI in mobile apps

I'm seeking a highly skilled website developer, who has a deep understanding of Search Engine Optimization (SEO). Key Responsibilities: - Develop a website from scratch - Incorporate an online store into the website - Strategically implement SEO tactics to increase organic traffic Ideal Skills & Experience: - Extensive experience in website development - Proficient in SEO practices - Successful track record of improving search engine rankings and enhancing website visibility - Proven experience in developing online stores Therefore, if you possess the above skills and can achieve the identified goals, then your expertise is needed. Please submit your bid alongside references of your previous projects.

I require a seasoned web developer to create a portfolio website for me. The website will serve the purpose of showcasing my work, attracting potential clients, and providing essential contact information. Key features to be included are: - Image Gallery: The website should have a gallery of images showcasing my past work. This should be visually appealing and easy to navigate. - Contact Form: A user-friendly contact form should be integrated into the website. This will allow potential clients to easily reach out to me for inquiries or collaborations. - Testimonials Section: Since the website is aimed at attracting clients, a section for testimonials from previous clients would be a great addition. This will help in building trust with potential clients. Ideal skills for the job: ...

I'm seeking a talented developer who has expertise in creating and deploying iOS apps, particularly in the E-commerce sector. Specifically, I need an IPA iPhone Apple app developed and deployed to the App Store using Flutter. Key Requirements: - Development of an E-commerce app for iOS using Flutter - Comprehensive understanding of IPA packaging for iOS - Previous experience with Apple App Store deployment - Knowledge of mobile app security and data protection - Strong understanding of E-commerce app functionalities, including user registration, login we have total coding related app is ready and app is working fine in android and app is available in play store also ==> Now the task is needed to generate an apple

Hello, I'm lookin for an skilled android app developer. Please read my requirements carefully & then start bidding. Actually I made an app through No code platform & I also implemented in-app-purchases in it. My app is an education app & provide test series & notes to series I implemented through wp ays quiz maker & display in app in web view format. Can is this possible if you can make a new app & transfer all quiz to new app. Is it also possible that I can migrate my previous paid users to new app so that they don't have to pay again on new app. I hope you understood my requirements. Thanks in advance.

I'm looking for a full-stack developer to create an online job platform where job seekers can find and apply for full-time and freelance job opportunities. I need this project to be completed as soon as possible. Key Features: - Full-time and Freelance Jobs: The platform should support posting, searching, and application of full-time and freelance job opportunities. - User-friendly Interface: Intuitive design enabling easy navigation and job application. - Job Alerts: Implement a feature that allows job seekers to get notified whenever a new job matching their criteria is posted. Ideal Candidate: - Proven experience in full-stack development, particularly in building similar platforms. - Strong understanding of user experience design and de...

I am on the lookout for an adept freelance copywriter who is proficient in both German and English. Our need primarily concerns: - Crafting content for brochures and website edits - Ideally, the copy will maintain a balanced approach, merging technical specificity with more general appeal to convey our B2B software-as-a-service (SaaS) offerings to potential customers. Your ability to deliver clear, persuasive, and engaging writing optimized for a B2B audience is critical for this project. In addition, you may occasionally be tasked with creating social posts, reports, blog posts and providing translations from English to German, making bilingual proficiency a must. Our German marketing team largely focuses on our SaaS product (specifically, our learning management system, Spark...

We are seeking a skilled developer to set up and program a framework using Apache Kafka for distributed messaging. The project aims to establish an efficient and scalable messaging system that can handle high-volume message processing and filtering. Project Overview: The developer will be responsible for setting up Apache Kafka on a Windows environment and developing a master script and worker scripts to facilitate distributed messaging. The key requirement is to implement a mechanism for bulk-reviewing messages in the queues every 10 minutes to filter out unnecessary messages and optimize system performance. Responsibilities: Apache Kafka Setup: Install and configure Apache Kafka on a Windows machine. Set up the necessary Kafka topics, partitions, and brokers to support di...

I need a very simple app having just a Home page, My Cart and a profile option. No payment option, not any delivery option, nothing just app of 2 to 3 pages. required today.

READ CAREFULLY - THIS COULD BE A LUCRATIVE OPPORTUNITY FOR THE RIGHT PERSON OR AGENCY We're looking for a talented and passionate AI enthusiast / specialist to work along site us catering to our clients About Us: We are a leading AI solutions agency based in London, UK, specializing in AI services tailored for small to medium-sized businesses (SMBs) across the UK and Europe. We are currently seeking a highly motivated individual or agency to collaborate with us in setting up these systems for our current clients. About You: Technical Skills: - Experience with cloud-based AI platforms (e.g., Dialogflow, Rasa, Bland AI, Open AI, Pipedream, Make, Zapier etc) - Strong understanding of natural language processing (NLP) concepts - Familiarity with API integrations - Experience with p...

I'm looking to configure RDP on my Windows system. The main goal is to access applications remotely. Key Requirements: - Configure RDP on a Windows OS - Provide guidance on how to access applications remotely using RDP This is a critical task for me. While I'm not certain if multi-session support is needed, your expertise in RDP and application access is crucial to my project's success. Also I am worried if configuring RDP may expose me to outer world with risk of hacking, suggest what best can be done to mitigate risk.

I need someone to display my YouTube comments based on newest first. I use PHBB forum so I would like it shown on top. It can accept html and php I believe. It should only show 5 latest. So if you can create this on your site I can upload it to mine and so we can see this on a blank page. Then I need code to insert into my Phbb forum

...the Department of Biotechnology, Government of India and are award holders for the ‘Best Innovation in the healthcare sector 2014’ courtesy BIRAC. They are an ISO 9001:2015 certified company. Be a part of Morning Fresh’s fast-growing team and become an integral part of their journey as they launch more exiting wellness beverages! Job Title: Freelance Video Creator and Editor Location: Remote Morning Fresh is seeking a talented and creative Freelance Video Creator and Editor to join our team. In this role, you will collaborate with our team to produce engaging video content that reflects our brand identity and resonates with our target audience. You will be responsible for conceptualizing, filming, and editing high-quality videos for various marketing c...

I am looking for a skilled software developer to create a desktop application to effectively manage my travel packages. This program should be cross-platform, operating seamlessly on both Mac and Windows. The key features I require include: - Easy package upload, to allow swift and efficient input of travel package details. - A calendar for scheduling, to organize and view package availability. - User access management capabilities, to provide different access levels for administrative tasks. Experience in designing software compatible with multiple operating systems, as well as a background in creating user-friendly interfaces is highly desirable. Knowledge of the travel industry is a bonus, but not essential. The successful freelancer will deliver a robust, fast, and intu...

I'm looking for experienced React developers to enhance my social media web application. The main task will be implementing a video call and video chat feature, as part of our new feature additions initiative. Key Responsibilities: - Implementing video call and video chat services seamlessly into our existing application - Ensuring smooth video call and chat functionality, with a focus on user experience and performance Ideal Candidates should have: - Proficient skills in React and React Native - Previous experience in integrating video call/chat services in web applications - Strong understanding of UI/UX principles and performance optimization - Ability to work collaboratively in a team with other developers and designers This is a fantastic opportunity to work on a...

I'm in need of a freelance electronics engineer with experience in LTSpice to design a voltage converter for me. - Purpose: The desired converter is a voltage cuck converter, meaning it should be able to change the voltage of the input signal. - Output Characteristics: The voltage output should be adjustable, allowing for flexibility in use. The output voltage range is 240 - 346 volts. - Maximum output current is 87 A. - Maximum rate of change of inductor current is 34.5 - Maximum Power is 30 kW. - Input Voltage Range: The input voltage range should be 330 to 550 volts. - Switching frequency is 150 kHz. - The project is only a simulation in LTspice. The ideal freelancer for this job should have: - Experience in LTSpice and a proven track record of designing voltage conver...

I'm in need of an experienced Drupal 10 developer to assist with a new saas website construction from the ground up. The tasks will mainly revolve around theme customization, module development, and general site maintenance. This contract will be 3~6 months. Write "Lang" on top of your bid if you are a bot. Skills and experience needed include: - Proficiency in Drupal 10 - Strong background in theme customization - Proven experience in module development - Ability to carry out site maintenance effectively Looking forward to your bids!

I need to have an iOS app with a lock screen widget, that allows you to record audio memos immediately after tapping it, like with the app "Tape It". Afterwards the recordings should just be saved in an local iPhone or iCloud folder. Make it as simple as possible, just allow the deletion of a recording and the change of the save folder.

I'm in urgent need of a skilled C# developer to help me fix a few minor visual issues in my project. I have a detailed list of what needs to be addressed. Ideal Skills: - Proficiency in C# - Experience with bug fixing - Attention to detail I'll share the list of issues with the selected freelancer. The task is expected to be completed promptly as the issues are minor.

I'm in need of a freelance electronics engineer with experience in LTSpice to design a voltage converter for me. The budget of the project can be much higher than 30$. - Purpose: The desired converter is a voltage cuck converter, meaning it should be able to change the voltage of the input signal. - Output Characteristics: The voltage output should be adjustable, allowing for flexibility in use. The output voltage range is 240 - 346 volts. - Maximum output current is 87 A. - Maximum rate of change of inductor current is 34.5 - Maximum Power is 30 kW. - Input Voltage Range: The input voltage range should be 330 to 550 volts. - Switching frequency is 150 kHz. - The project is only a simulation in LTspice. The ideal freelancer for this job should have: - Experience in LTSpi...

I'm seeking a skilled developer to create a user-friendly web application. This platform will primarily focus on information sharing. Key features and requirements: - Develop a visually appealing and intuitive web application geared towards information sharing - Ensure seamless navigation and user experience - Implement appropriate information infrastructure to support easy sharing and retrieval - Potential need for user engagement features, such as user accounts and profiles, interactive forums or chat, and social media integration to be considered Ideal candidates should have: - Proven experience in web application development, particularly in designing platforms for information sharing - Strong understanding of user experience and interface design - A...

I need an experienced Maui/Xamarin programmer who can write a native code helper to access(CRUD) the notes field of a selected contact in contacts/phonebook. Primarily for Android bu need to do same on iOS. Therefore programmer needs familiarity with within .net Maui project targetting Android iOs 1) Android code helper 'getnotes(contactid)', returning the notes field of the selected contact Id 'savenotes(contactid,newnote)', posts edited/new notes to notes field of contact Id 2) ditto for iOs Note Maui has an interface to both iOs and Android phoebook/contacts. It does not however offer access to Notes field - therefore this has to be done using native code. In Android my preference is to use a Contentresolver.

I am in need of a Pinescript developer who can fix my indicator. I need purple line to know from where the signals came from. You can refer the video. Key requirements include: - Ability to design and implement technical indicators from scratch - Proficient in Pinescript - Strong understanding of trading strategies and indicators - Experience in developing complex indicators is a plus, but not required. Visualizing the indicators on the chart with basic elements such as lines and arrows is also a necessity. If you have the right skills and experience in Pinescript and trading indicators, I'd love to hear from you. budget: $25

[URGENT] Finish by today My existing iOS application is built in Swift and I'm looking to add a new functionality. The app currently utilizes the LIDAR sensor available in Iphone 12+. It allows user to take picture which also saves depthmap and other variables such as distance from phone to the object in the center of the screen and etc to the files app. I would like you to: - Instead of saving the image,depthmap and other variables (current in a json file) in the files app - Send the images and other data to a server via HTTP post request, and display the received processed image back from the server on the screen along with other data as well. Budget is only $150 as this is a 3 hours work max. Ideal Skills and Experience: - Proficient in Swift and iOS app developme...

I'm looking for a Salesforce CPQ Developer to assist with a variety of functionalities. Experience in Development, Visualforce Pages, Lightning Web Components, and Administration Strong understanding of CRM processes and functionality Experience with customization and enhancements Knowledge of Salesforce CPQ and CPQ configuration Experience with Salesforce integration and data migration Strong analytical and problem-solving skills Excellent written and verbal communication skills certifications are a plus Bachelor's degree in Computer Science, Information Technology, or related field Are you enthusiastic to accept new challenges and delivering a high performance , scalable solutions in Salesforce CPQ and meet below

I'm seeking a talented freelance graphic designer to help create a dynamic logo that primarily focuses on a slogan or tagline. There are no pre-determined color preferences - I want you to feel free to explore the color spectrum and choose the most visually appealing color scheme that reflects our identity. The logo must effectively and clearly communicate innovativeness and creativity, emphasizing an up-to-date and trend-setting approach. Ideal Skills and Experience: * Proven experience in graphic design * Portfolio of completed logo designs * Knowledge of current design trends * Proficiency in Adobe Illustrator and Photoshop * Creativity and out-of-the-box thought process is a must-have Your role will be the driving force in creating a logo that leaves an impact and ma...

I’m currently seeking an experienced developer for the creation of a CRM Application based on WordPress and PHP. This comprehensive CRM system will focus mainly on the following aspects: - Contact Management: Easy setup for adding new contacts, updating existing contacts, and generally ensuring robust record-keeping for clients. - Sales Pipeline Tracking: This feature will aid in tracking the progress of deals, identifying slow points, and pushing for efficient sales funnel management. - Customer Support Ticketing: A well-organized dashboard for support tickets, helping in prompt and effective resolution of customer issues. While the main features are outlined, I’m open to discussing additional functionalities that might enhance the system’s effectiveness....

...full stack developer to help with a web application project that I'm working on. The ideal candidate should be proficient in JavaScript and .NET, with specific experience in Angular and SQL Server. Key Skills and Experience: - Proficiency in JavaScript and .NET. - Strong knowledge of Angular and SQL Server. - Previous experience in developing web applications. - Ability to work collaboratively in a team setting. Responsibilities: - Develop the front-end using Angular. - Design and maintain the back-end of the application using .NET. - Ensure seamless integration of SQL Server for database management. - Conduct thorough testing to guarantee the application's functionality. This is a great opportunity for a skilled full stack developer to contribut...