Senior ruby on rails engineer software developer freelancer jobs

As we're in the development stage of building a decentralized application, I'm looking for a skilled Solana developer to join the project. The main focus of the project is on building a decentralized application. Therefore, the ideal candidate should have experience with smart contract development and blockchain integration. Skills and experience required: - Proven experience in smart contract development and blockchain integration - Strong knowledge of Solana and Rust programming - Experience in deploying decentralized applications The ideal developer will be able to work closely with our team to bring our decentralized application project into reality. The project is already in its development phase, so we are searching for an expert who can hit the gr...

I'm seeking an expert writer, experienced in conceiving compelling, persuasive pitches targeted specifically at those investing in startups. This pitch will be instrumental in raising capital for my UK based Pre-seed stage Software Startup. The unique strength of my startup is its team, which is highly experienced in delivering cutting-edge software solutions. Key Requirements: - You should be adept in conveying our team's unique experience and potential for delivering innovative software solutions. - Prior experience in writing fundraising pitches for software technology startups, especially at a Pre-seed stage in the UK market is crucial. - A proven track record in successfully raising funds through written pitches. I'm excited to work with ...

I'm seeking a skilled Full Stack Developer with extensive experience in PHP to develop a web application. The primary functionalities I'm looking for in this project are around the API and the ability to handle data updates. Key Requirements: - Expertise with PHP: The ideal candidate should have a strong background in PHP, with the capability to develop robust and efficient code. - Full Stack Proficiency: The project requires both frontend and backend development. Proficiency in both areas is crucial for the success of this project. - API Development: You should have experience in developing APIs, especially around data updates. This is a core part of the requirements. The project is focused on developing a web application and ensuring that the API is capable of...

We are urgently developing a comprehensive marketing analytics tool designed to integrate data from various advertising platforms, website activity, CRM, and Marketing Automation Platforms (MAP) to provide a unified view of marketing performance. We require a highly skilled and efficient Data Engineer or Architect who can handle data export processes, model and create tables and entity relationships, and develop an efficient and scalable database within a tight one-month deadline. ### Responsibilities: - Data Integration: connect and streamline data from multiple sources including ad platforms (like Google Ads, Facebook), website analytics tools (e.g., Google Analytics), CRM systems (e.g., Salesforce), and MAPs (e.g., HubSpot). - **Accelerated Database Design:** Design and implemen...

As an important player in the pharmaceutical industry, we are seeking an efficient and resourceful AI/ML engineer who can harbour their expertise in enhancing our cold chain operations. The specific responsibilities will include: - Conducting meticulous data analysis and modeling - Developing precise and efficient AI algorithms - Integrating existing systems with developed ML models Our project predominantly concentrates on temperature-sensitive medications, which adds a layer of vitality to the precision and accuracy of our operations. Hence, the ideal candidate should have a background in pharmaceutical logistics or healthcare and a solid command over machine learning algorithms. With the potential of AI/ML, we aim to escalate the accuracy in the tracking of our shipment...

I am in need of a skilled blockchain developer who specializes in Ethereum to create a smart contract for asset management. Key Responsibilities: - Develop a smart contract on the Ethereum and other platforms - Design the contract to facilitate asset management Create tokens Ideal Candidate: - Proficient in Ethereum & Blockchain platform - Experienced in creating smart contracts - Strong understanding of ERC-20 token standard - Prior experience in asset management on blockchain - Familiarity with secure and efficient coding practices Please provide relevant samples of your previous work.

I'm looking for a skilled Codeigniter developer to help me with a specific task. - The Purpose: I've already got a Codeigniter project up and running but I'm looking to expand it by adding new modules. - The Module: Specifically, I need help with integrating a new Fees Payments system. - Payment Gateway: The system will need to process Credit Card and Cash Payments. - Skills: I'm looking for someone with a strong understanding of Codeigniter framework, and experience with the aforementioned payment methods. If you have the expertise required, I would love to hear from you.

I'm looking for an experienced QA Automation Engineer for solving some issues we have in a complex Jmeter script which we are using in our performance/load tests. This is a 1 week job at most and payment will be fixed at $500. Our JMeter script is not a simple one, so if you are not a real expert in JMeter please do not apply. You will fail to do the project. If you are an expert using JMeter for really complex projects, please apply by simply answering the below questions: 1- Tell us why you consider yourself a JMeter expert. 2- What were the most complex 2 projects that you did JMeter tests for and what made them complex. Please type "I can do it" at top of your reply so that I know you actually read the description.

I'm seeking a skilled MERN stack developer to assist with my project. Here are the key aspects of the job: - I need assistance with the MongoDB, , and React.js components of the MERN stack. It's essential that you're proficient in all these technologies to be considered for this job. - Although I didn't specify features or functionalities earlier, your ability to implement common MERN stack functionalities is crucial to this project. This includes handling user authentication, real-time updates, and CRUD operations. - There's no strict deadline for this project, but I'm looking for someone who's efficient and can deliver in a timely manner. Ideal candidates should have: - Proficiency in MongoDB, , and React.js - Experience with user authenti...

I'm in need of a skilled HTML - CSS - JQuery developer who can help me build a creative a content to add Describtion on the Images. We need for our Ticket system a to upload image and mark them and create Task for that. We will provide u the the HTML Page where u have to add ur work on it. Key responsibilities: - Designing a creative website that stands out - Ensuring the website is fully responsive for mobile devices - Implementing animations and transitions to enhance user experience Ideal skills and experience: - Strong HTML, CSS, and JQuery skills - Experience in creative website design - Proficiency in creating responsive layouts If you have the required skills and can help me build a creative, responsive website, I'd love to hear from you.

I'm seeking a skilled web developer to create a website for me. Unfortunately, I accidentally skipped some of the questions. However, I'm open to discussing your past work, experience, and detailed project proposals to make a decision. Your input will also be appreciated in determining the type of website I need and the features it should have. Please reach out with your portfolio and let's discuss further.

I'm looking to hire a React Native developer. I need a cross-platform app for both iOS and Android. The main focus of the app will be property Booking related. It will need to handle transactions, product listings, and user profiles. Further, the app should be multi-lingual, so support for multiple languages is required. Requirements: - Proficient in React Native, with a good understanding of its core principles - Experience in building and deploying E-commerce applications - Familiarity with UI/UX design, to ensure a user-friendly experience - Ability to work with and implement multi-language support - Understanding of mobile app security best practices. Your prior work on similar projects and willingness to provide a portfolio will be highly regarded.

I'm urgently in need of a senior CakePHP developer who can assist in fixing numerous issues I'm currently experiencing in the 2x version of my project. The framework version is 2x and multiple developers has worked on the code. I am looking for senior developer with real experience. Thank you

For this role, I'm urgently seeking an experienced Java Developer, though a specialization in Java SE, Java EE, or JavaFX is not necessary. At this time, a broad understanding of Java, rather than specific Java skills, is most crucial. Key Requirements: - Proven Java development experience is vital, as it'll aid in current project requirements. - Knowledge of specific APIs or libraries to extend capabilities and integrate systems. When applying, kindly provide the following: - A summary of your Java developer experience - Articulate your knowledge and usage of specific APIs or libraries. Looking forward to connecting with experienced and knowledgeable Java experts for a swift project execution.

I need a proficient Linux developer with a solid understanding of networking and security, and expertise in scripting languages like Bash or Python. The primary task will be troubleshooting and optimizing existing Linux systems. Also, superior skills in server administration and deployment are a requisite for this role. As the project unfolds, communication is critical, but I haven't decided on a reporting frequency at this point. Please provide suggestions on what you've found effective in your experience.

I'm in need of a skilled WordPress developer to create a platform aimed at facilitating hire and get hired interactions within the photo, video, and film production industry. Key Features Required: - **User Profiles & Portfolios**: Users should be able to set up profiles showcasing their work and experiences. - **Job Listings & Applications**: Employers should be able to post job opportunities and users should be able to apply. - **Payment Processing & Invoicing**: The platform should have an integrated system for processing payments and creating invoices. The ideal candidate for this project would have: - Proven experience in developing WordPress websites with similar functionalities. - Knowledge of web development best practices and the latest technologies. - Go...

Urgent Requirment for the Java Developer

Seeking a highly skilled .Net Developer to upgrade the existing system's back-end, ensuring it's user-friendly and solid. Key requirements: - Enhance system navigation and ease of use. - Optimize system performance for heightened stability. - Bolster security features for increased protection. The revamped system should be able to integrate with current mobile applications seamlessly. While specific app functionalities have not been defined, the developer should have prior experience with real-time data synchronization, push notifications, and user authentication. In terms of project timeline, the expectation is for this to be completed within a month. Ideal Skills: - Extensive experience with .Net Development - Prior experience with system optimization and sec...

I'm in need of an expert in Python, HTML and JavaScript programming. I am working on a project that involves developing a software tool. Key tasks involve: - Python programming - HTML development - JavaScript programming The main goal is to develop a high-functioning software tool. The ideal candidate should have expert level experience in all three programming languages. Your proven track record and portfolio of similar projects will help you stand out. This meticulously demanding job needs the best of the best. I am counting on your commitment to detail and your cutting-edge proficiency to produce a highly reliable software tool.

Hello! I'm looking for an experienced Person who can build the mobile device management (MDM) Server for iPhone devi...and management. I do not have an existing solution that needs to be integrated, so will require a new solution to be built from scratch. Before showing interest on this job, Please read the below link and then you can bid for this job FYI: The ideal candidate has extensive experience developing mobile device management solutions and can create a solution that meets my needs in terms of the level of user access control. If you believe you can deliver the skills and experience necessary for the job, please reach out. I am excited to work with you on this project to build a customized solution.

I need expert help to increase the visibility of various cryptocurrency projects on social media platforms, specifically Twitter and Telegram. The ultimate target is to engage and attract between 1,000 and 10,000 new followers or members on each platform. • Job Requirements: - Developing and implementing a social media strategy tailored to cryptocurrencies. - Regular posting of engaging and informative content to attract new followers and stimulate member interaction. • Ideal Skills: - Extensive knowledge of the cryptocurrency sector. - Proven experience in social media marketing and audience growth. - Strong understanding of Twitter and Telegram, and their algorithms. - Excellent communication and content creation skills.

I'm looking for a ready made software with complete code base Key Features: - The software should offer a user-friendly interface to handle user management efficiently. Who should bid: - Freelancers who have prior experience in creating user management systems. - Proficiency in developing software compatible with Windows and MacOS. - Understanding of the unique needs of business users. Your bid should give me confidence in your understanding and ability to deliver on these requirements. Let's create a tool that simplifies user management for businesses across these key OS platforms!

I'm looking for a talented Node.js/Express developer to help me with the backend of my website. The frontend is already set up, and now I need a skilled individual to take care of the backend, particularly for the contact page API. This is an exciting opportunity to showcase your skills and work on a project that's primed for success. Key Requirements: - Develop a secure and efficient contact form submission system. - Implement an intuitive email notification system for incoming messages. - Ensure the backend integrates seamlessly with the already established frontend. Ideal Candidate: - Proficient in Node.js and Express with a solid portfolio of past work to support your skills. - Experienced in developing contact forms and email notification systems. - Strong un...

...Mechanical Engineer with expertise in light steel construction to join our team. The ideal candidate will be responsible for assisting with project design and conducting various calculations for transportation and container fitting of the product. This individual will collaborate closely with our in-house engineer to achieve common goals and deliver high-quality results. Responsibilities: - Assist in project design and development processes - Conduct calculations for transportation and container fitting of products - Collaborate with the in-house engineer to ensure project success - Provide technical expertise and support throughout the project lifecycle - Ensure adherence to industry standards and best practices Requirements: - Proven experience as a Mechanical ...

Seeking freelancer in Portugal (preferably in the Arganil region) Are you a proactive multitasker based in Portugal, near Arganil, looking for flexible work opportunities? I am in search of a dynamic freelancer who is fluent in both Portuguese and English to assist with various tasks. Long term work, short tasks every now and then. Responsibilities include: Researching local companies and products Making phone calls Occasional site visits as required Stable internet connection for remote tasks Requirements: ✔ Fluency in Portuguese and English ✔ Reliable internet and phone communication ✔ Access to a car and a valid driver's license I offer a fixed hourly price of 8 euro per hour, but I am open to discuss a project-based price as well.

I'm in need of a talented PHP Nextjs developer for a project involving a range of tasks including Backend development, Frontend development, and API integration. If you're well versed in PHP and JavaScript, and have extensive experience working with , this could be the ideal project for you. Key Tasks: - Backend development: I require a skilled developer to build and maintain the server-side of the web application. - Frontend development: I need assistance with the development and maintenance of the client-side of the application. - API integration: Experience integrating various APIs is a must for this project. Specific Features: - User Authentication: You'll be responsible for implementing a secure and user-friendly authentication system. - Database Integra...

I'm looking to have my utility token listed on Coin Market Cap. The token is built on the Binance Smart Chain, establishing its preeminent functionality. A complete whitepaper, illustrating the motive, design, and purpose of my token, is available for reference, conveying a clear project narrative. Ideal Skills: - Knowledge about cryptocurrency, specifically utility token - Understanding of the Binance Smart Chain - Experience in token listing on Coin Market Cap

Looking for a freelancer team leader who can manage our SEO and SMO team. Your responsibilities; 1# Create SEO and SMO marketing strategies 2# Assign workload to team 3# Collect work reports from the team and prepare detailed reports for the client. Initially, we will need a couple of hours of work but as soon as the number of projects increases, we will authorize more hours. Note: 1# Only apply if you're willing to work at bellow $6/hr 2# Agencies avoid submitting proposals.

I'm in need of a WordPress developer to create a corporate website for me. The website should have a professional and corporate feel. The main features required are: - Blogging capability: This is a crucial aspect of the website. I need a clean and professional blog layout that will be easy for me to update and manage. - Contact form: A simple and easy-to-use contact form needs to be set up. This should be professional and at the same time user-friendly. The successful candidate should have prior experience with WordPress development. Please include examples of previous projects you have worked on in your application. The ideal freelancer for this job will have: - Strong experience in WordPress development, specifically with e-commerce and blog functionalit...

I require a skilled Electronics Circuit Design Engineer to create a power amplifier circuit for me. The desired specifications for this project are as follows: - Input: +12v, -12v square wave (bipolar/monopolar) - Frequency Range: 0.1 Hz to 1000 Hz - Output: +100v, -100v - Load: 500 ohms - Output Current: 200mA Key requirements for this project: - Designing a power amplifier circuit that can handle the specified input and output voltage. - Ensuring the frequency range is between 0.1 Hz to 1000 Hz. - The output should be capable of driving a load of 500 ohms with 200mA output current. Skills and experience required: - Proven expertise in Electronics Circuit Design, particularly in designing power amplifiers. - Proficiency in managing both bipolar and monopolar input. - Solid under...

I'm seeking an experienced .NET developer with over 4 years of expertise in C# programming and SQL databases. Key Responsibilities: - Enhancing existing software application - Adding new functionalities The ideal candidate should possess: - Strong experience in C# programming - Solid knowledge and practical experience with SQL databases Be ready to dive into the project and help us bring significant functionality enhancements to our existing software. Your experience and skills in C# and SQL will be invaluable in this task.

We are looking for a person, whether a person or a company, to help us conceptualize, organize and develop a web platform that contributes to the growth and income generation of our company and, if possible, to the community. We are at an early stage where we are exploring different approaches and possibilities for our project. We value the creativity, experience and technical capacity that an external team can contribute to turn our visions into reality. We are open to anyone who can contribute fresh ideas and innovative solutions. In short: We don't have any ideas for a web platform that helps the company earn income.

I urgently need a skilled Electronics Engineer who is proficient in working with Cadence Virtuoso. Your tasks will include: - Designing a simple circuit - Capturing the schematic of the circuit - Creating a PCB layout of the circuit - Writing a comprehensive report on the completed tasks Due to the urgency of this project, I would prefer someone who can get started as soon as possible. Ideal Skills: - Expertise in Electronics Engineering - Proficiency in circuit design - Solid experience with schematic capture - Strong skills in PCB layout - Experience in Cadence Virtuoso - Ability to write clear and comprehensive reports I look forward to receiving your bids and working with you on this project.

I'm looking to hire a freelancer with expertise in eKYC platforms, specifically CTOS, Innov8tif, and Onfido. This project primarily concerns integrating ID authentication features for a POC. The ideal candidate will have: - Prior experience in working with CTOS, Innov8tif, Onfido, or similar eKYC platforms - A portfolio demonstrating the integration of ID authentication features - An understanding of security protocols related to ID verification Candidates with project experience in both frontend and backend environments would be preferred. It's crucial to ensure a seamless user experience. If you meet these criteria, I would love to hear from you.

( Only Indian ) Please help with the good quality profiles on the below shared requirement . Skills Required - Python , ReactJs and AWS ( For Technical Lead – Team lead experience required ) Experience – Lead – 9-+ years – 6-9 Years NP – Immediate – 10 Days Job Description As a Tech Lead, you will have key responsibility for the critical tech design and architecture decisions for your team. It is your responsibility to drive projects forward, mentor junior team members, ensure alignment with the company’s overall architectural direction, and contribute to continuous improvement initiatives. By delivering innovative and reliable software, you will contribute to the success of our organization and make a meaningful impact to thousan...

I need a talented VB.net developer with a strong background in SQL Server. Key Responsibilities: - Develop software applications using VB.net - Efficiently manage databases - Designing, coding, testing, and debugging software applications using VB.NET. - Calling third-party API - Payment gateway integration - Stored Procedure Ideal Candidate: - Proven experience in VB.net development - Strong familiarity with SQL Server - Good problem-solving skills - Ability to work independently and meet deadlines. Please provide relevant work samples in VB.net development and describe your experience with SQL Server.

I'm looking for an experienced WordPress developer who can help me add a special functionality to my existing websites by creating a custom plugin. This role is ideal for someone who has: - A high level of competency in PHP, JavaScript, and MySQL and is experienced in WordPress. - Strong understanding of the WordPress plugins ecosystem and knowledge on how to extend its functionalities. - In-depth knowledge of SEO and how to enhance it on a WordPress website. Key Tasks: - Develop a WordPress plugin that targets SEO enhancements. - Test the plugin for compatibility issues and fix any bugs, ensuring it works harmoniously with our existing setup. - Understand our needs and respond to them by customizing the plugin where necessary. Please note that the function to ...

As we're in the development stage of building a decentralized application, I'm looking for a skilled Solana developer to join the project. The main focus of the project is on building a decentralized application. Therefore, the ideal candidate should have experience with smart contract development and blockchain integration. Skills and experience required: - Proven experience in smart contract development and blockchain integration - Strong knowledge of Solana and Rust programming - Experience in deploying decentralized applications The ideal developer will be able to work closely with our team to bring our decentralized application project into reality. The project is already in its development phase, so we are searching for an expert who can hit the gr...

Looking for an experienced Ruby on Rails back-end developer specialized in database management. The focus is to construct a medicine distribution system with a smooth, efficient process. - Key Requirements: * Extensive back-end development experience * Strong database management skills * Proven track record in Ruby on Rails

We are looking for a freelancer for a small project, who is having Expertise in ReactJS. Below mentioned JD for your reference. We are looking for a great JavaScript developer who is proficient with React.js. Your primary focus will be on developing user interface components and implementing them following well-known React.js workflows (such as Flux or Redux). You will ensure that these components and the overall application are robust and easy to maintain. You will coordinate with the rest of the team working on different layers of the infrastructure. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product is important. Responsibilities Developing new user-facing features using React.js Building reusable components...

I'm a Senior Sales Operations Analyst at a top online advertising campaign management firm and I urgently require a professional skilled in Tableau. Your task will be to create a comprehensive dashboard that assists me in analyzing and strategizing our sales operations. Key Deliverables: - Present crucial data points including daily ad impressions and conversion rates. - Display key performance indicators such as Click-through rate (CTR), Cost per acquisition (CPA), and Return on ad spend (ROAS). - Use different visualization formats like line charts, bar charts, and pie charts to represent the information. Ideal Skills: - Proficiency in Tableau - Strong analytical skills - Experience in developing dashboards with extensive understanding of marketing and sales KPIs. ...

I'm in urgent need of a full stack PHP developer for a custom web application. The ideal candidate should be proficient in both front-end and back-end development, as well as database management. Key Responsibilities: - Developing a custom web application using PHP - Implementing both front-end and back-end features - Ensuring proper database management Key Requirements: - Prior experience in developing custom web applications - Proficiency in PHP, with a solid background in both front-end and back-end development - Experience with managing databases - Good understanding of security and scalability - Ability to work in a fast-paced environment - Strong problem-solving skills Please note that knowledge of any specific frameworks like Laravel, CodeIgniter, or Symfony isn'...

I need a skilled PHP developer with full-stack capabilities for an urgent web application project. The primary purpose of this project is the development of a web application, with a major focus on user login and authentication. Key Tasks: - Front-end Development: The ideal candidate should be proficient in creating user-friendly interfaces that are engaging and responsive. - Back-end Development: A strong understanding of server-side languages and database management is essential for this project. - Database Integration: The successful candidate will be responsible for integrating and managing databases to ensure seamless operation of the web application. The most important feature of this web application is user login and authentication. As such, the developer sho...

Project Description: We are seeking a highly skilled High-Performance Computing (HPC) Engineer with expertise in shell scripting and workflow automation to assist in the evaluation and enhancement of the Parallel Works platform. The successful candidate will need to execute various tasks involving cloud cluster management, running pre-installed workflows, and handling both basic and advanced system integrations. Experience with MPI (Message Passing Interface), Singularity containers, and batch scripting is crucial.

I am looking for a professional who has e...professional who has experience in data scraping to extract email addresses of senior level employees in the Building Industry, specifically from the United Kingdom. This task involves collecting the email addresses of 100 senior level employees. Key Requirements: - I need the first name, job title, and email address of each employee. - All the email addresses should be from the United Kingdom. The ideal freelancer for this project should have: - Experience in data scrapping and data mining. - Proficiency in tools and techniques for extracting data from web sources. - Attention to detail to ensure the accuracy of the collected information. - Familiarity with the Building Industry and the job titles associated with senior...

I'm in need of a skilled Swift developer with experience in implementing in-app purchases in macOS applications. The application is already built and functioning, but I require assistance in adding a subscription-based in-app purchase feature. Key Requirements: - Have access to the Apple Developer Program and experience in submitting in-app purchase features to the Apple Store - Proficient in Swift, as the application is built using this language - Ability to implement subscription-based in-app purchases seamlessly - Experience in the development of macOS applications and complying with Apple Store guidelines Your responsibilities will include: - Implementing the subscription-based in-app purchase into the existing macOS application - Ensuring the in-app purchase featu...

Integrate 3 API only. Source code is ready. Able to follow and close project in 3-4 days

I urgently need a skilled Node.js developer to focus on backend development. The primary task is to integrate a payment gateway. We followed the instructions provided and implemented the following code using server-side Node.js. We utilized ngrok to enable HTTPS connections. We have successfully initiated a transaction using this code in the uploaded file. However, we encountered an issue retrieving the transaction, which should have been provided but is not available. We were advised to handle callbacks and decrypt the response, but we're facing difficulties in doing so. Handling callbacks and post-success payment URLs did not resolve the issue. We now need

I'm seeking a proficient C# developer, skilled in the .NET framework for a project. The exact application type is still to be confirmed. You should have: - Strong experience with C# programming. - Understanding of .NET framework. - Ability to work without strict time constraints. Time frames and further project details will be discussed upon connection. Looking forward to working with a focused and motivated professional.

...reliable and creative React Native Developer to build a unique app for my business. Despite the information gaps, the app should ideally have: - User Authentication: Ensure users can identify themselves before gaining access. - Push Notifications: A tool to engage users. - In-app Purchases: Improve revenue stream. The ideal developer for this project should be proficient in the use of React Native and experienced in incorporating these functionalities. It's a bonus if you have a knack for creating user-friendly designs that encourage interaction and drive profits. Please include: - Examples of your past work, specifically involving React Native. - A detailed proposal defining your approach to this project. - Your overall experience as a React Native Developer...