Upwork home
Sign up
Secondary

Hire the best OAuth developers

Check out OAuth developers with the skills you need for your next job.
Hire freelancers
Clients rate OAuth developers
Rating is 4.8 out of 5.
4.8/5
based on 397 client reviews
  2. Development & IT Talent
  3. Back-End Developers
  4. (Current) OAuth Developers
  • $50 hourly

    • 4.8/5
    • (291 jobs)
    ZOHO DEVELOPER | ZOHO PARTNER | ZOHO ARCHITECT | ZOHO EXPERT Result-oriented Zoho developer and an expert in the implementation of Zoho applications with more than 8 years of experience in Zoho, plus 15 years of app&web&db Zoho development for dozens of industries. Expand the core functionality of Zoho apps. I can develop custom Zoho CRM (Books, Desk, etc.) integrations for your business needs (via API, Zapier, Make, etc.). Automate your ZOHO in terms of sales, marketing, and business processes and standardize working methods. Customize standard Zoho modules, add additional functionalities, and make Zoho CRM work as you do. With custom views, filters, and fields. - Zoho One - ZeptoMail - Zoho CRM - Zoho Flow - Zoho Desk - Zoho Analytics - Zoho Books - Zoho Inventory - Zoho Creator - Zoho Recruit and Zoho People - Zoho Subscriptions - Orchestly - Zoho Catalyst and other API integration tools
    vsuc_fltilesrefresh_TrophyIcon OAuth
    Business Consulting
    API Integration
    MySQL
    API Development
    Implementation Plan
    Data Migration
    Enterprise Resource Planning
    Zoho Creator
    Zoho Analytics
    Marketing Automation Strategy
    Business Process Model & Notation
    Plugin Development
    API
    Telemarketing
    Zoho CRM
  • $170 hourly

    • 4.9/5
    • (63 jobs)
    • Microsoft Certified: Azure Solutions Architect Expert • Design and implementation of Identity and Access Management Systems, Platform Integration: Azure AD B2C, Okta, Auth0, Identity Server, Centrify, Salesforce) • OpenID Connect, OAuth2 and federation flows. • Sr. .NET Developer with almost 20 years in software design and development experience on Responsive Web and Windows applications - Asp.Net Core, .C#, ASP.NET, MVC, Rest APIs • Full stack development with multiple back-end and client side technologies.• • Test Driven Development (TDD), CI/CD Pipelines, Git, Azure DevOps • Excellent communicator and coach. Have acted as liaison among teams, clients, users, stakeholders and external parties to get projects from idea to deployment.
    vsuc_fltilesrefresh_TrophyIcon OAuth
    Single Sign-On
    User Identity Management
    Web Service
    Auth0
    Test-Driven Development
    Microsoft Azure
    Agile Software Development
    .NET Framework
    Web Development
    ASP.NET MVC
    JavaScript
    Node.js
  • $29 hourly

    • 3.8/5
    • (381 jobs)
    A Techno commercial professional working as a Senior Business Development Manager. Responsibility includes collaborating with the clients to gather the business specifications, improving the scope in terms of technicality and user experience by offering suggestions on scope and latest technologies and furnishing clients with all required information about the services offered, my area of expertise, the processes being followed and all other required information related to the project to help make clients an informed decision Open Source: PHP 5, PHP 4, CGI/Perl (Mod_perl/ ActivePerl/ ePerl), Python, Moodle IPhone, Mobile & Handhelds: Apple iPhone development using Xcode and Objective C, Blackberry, Google Android, Microsoft Windows Mobile, J2ME platform CLDC1.1, MIDP1.0, MIDP2.0, Windows7 Phone, Android tablet, Blackberry Playbook. Microsoft Technologies: C#, VB.NET, Visual Studio .Net 2003 / 2005/ 2008, SharePoint services 3.0, MOSS 2007, MOSS 2010, ASP, ISAPI/NSAPI, ASP.NET 1.1/ 2.0 / 3.0 / 3.5. Crystal Reports, SQL Reporting, Microsoft Azure, Silverlight, Microsoft Office Live. Frameworks & CMS: Moodle, Magento, Joomla, Drupal, WordPress, CakePHP, Zend, Symphony, CodeIgniter, OSCommerce, DotNetNuke, ASPDOTNETSTOREFRONT, BVCommerce, CheeryPy, Django, Zope, Plone, Movable Type, CMS Made Simple, TYPO3, CREloaded,Zen Cart,Xcart, Big Commerce, Rainworkx,Sugar CRM,Vtiger. Internet Marketing: Search Engine Optimization, Pay per Click Management, Social Media Marketing, Brand Reputation Management, Social Network Marketing, Content Copywriting, Link Popularity Development and SEO Consultancy for under development sites and portals. Flash & FLEX: Adobe Flash CS4, Adobe Flex, Flash Action scripting (AS 3.0), Flash Gaming, Flash Media Server, Flash Remoting, Rich Internet Applications (RIA), Adobe AIR. User Interface / Graphic Design: Adobe Photoshop, Image Ready, Flash, CorelDraw, Adobe AfterEffects, Fireworks, HTML, XHTML, Dreamweaver. Databases:Oracle, Sybase, MS SQL Server 2000 / SQL 2005 / SQL 2008, MS Access, Postgresql, MySQL 4.x/5.x, NoSQL. Operating Systems: Windows 2003/2008 .NET Server, Linux , Unix, Windows 95, Windows 98, Win ME/XP and Windows NT/2000. WebServer: IIS, Apache, RedHatSecure. Cloud Servers: Amazon EC2, Windows Azure. Third Party APIs: Foursquare, Dimdim, Google Maps, Flickr, Slideshare, Twitter, Facebook, LinkedIN. Miscellaneous: AJAX, XML, JavaScript, Application development for Facebook and Twitter, PayPal integration, Google checkout and other Payment Gateway integration, Database Administration.
    vsuc_fltilesrefresh_TrophyIcon OAuth
    WHMCS Development
    Blackboard
    Drupal
    Magento 2
    Social Media Optimization
    Django
    Moodle
    Node.js
    Laravel
    Python
    PHP
    JavaScript
    React Native
    WordPress
  • $30 hourly

    • 4.8/5
    • (59 jobs)
    10 Years Experienced in Software Development in top US and European companies and 5+ Years Top-Rated Plus Freelancer. Projects: ERP | Banking | Marketing Automation | Microfinance | E-commerce | Custom Business App Services Offered: Web App Development | Cross-Platform Desktop Application | AI-Based Software Development | Rest API Development | GraphQL Development | Identity Server SSO Development | Business Automation Development | API Integration | Full Custom Application | CRM | E-commerce | Cloud and Server Administration | Software Development Team Lead Key Technical Skills: - Back-end: ASP.NET, ASP.NET Core, SignalR, C#, .NET, NodeJS, Rust, Actix, Axum, Python, FastApi, Django - Front-end: React, Angular, Blazor, Razor, Tailwind, Bootstrap - Authentication and Authorization: Identity Server, Single Sign-On, Microsoft Entra, Google OAuth, - Okta, Auth0 with advanced role and resource-based access control - Cloud: Azure App Service, Azure Function, Azure Service Bus, Azure Bot, Azure OpenAI - Search Engine: Apache Lucene, Solr, ElasticSearch, OpenSearch, Azure AI Search - Database: Microsoft SQL, MySQL, PostgreSQL, Azure Cosmos DB - Server Management: Windows (2012 - Latest), Linux (Ubuntu, Redhat, CentOS) - Queue Management: RabbitMQ, Kafka, MSMQ, Service Bus - Job Scheduler: Hangfire, Quartz.NET, and C# channel-based background services Let’s discuss and work together to bring success.
    vsuc_fltilesrefresh_TrophyIcon OAuth
    MongoDB
    MySQL
    ExpressJS
    .NET Framework
    ASP.NET
    .NET Core
    C#
    Rust
    Angular
    React
    ASP.NET Core
    Blazor
    Microsoft SQL Server
    Microsoft Azure
  • $27 hourly

    • 4.9/5
    • (211 jobs)
    I'm the CEO and Founder of AnavClouds Software Solutions rated among the top 10% of the agencies on Upwork. As a certified Salesforce Consulting Partner and leading a team of experts, we deliver tailored solutions to businesses across 12+ countries. With over 10 years of experience and 40+ Salesforce certifications, we have completed 1000+ projects, ensuring seamless integrations, optimized operations, and measurable business growth. We specialize in a wide range of Salesforce products including Sales Cloud, Service Cloud, Marketing Cloud, Experience Cloud, Commerce Cloud (B2B, B2C), CPQ, Tableau CRM, MuleSoft, and more. Our expertise extends across industries like Retail, Healthcare, Real Estate, Manufacturing, Fintech, Telecommunications, and beyond. We have done more than 160+ complex integrations with projects like Mailchimp, Lightspeed, CTI, VendHQ, and more. Our services encompass everything from Salesforce implementation and customization to Lightning Web Components (LWC), Visualforce, Apex Triggers, and Data Migration. We are committed to providing scalable and cost-effective solutions, backed by a unique SLA guaranteeing query resolution within 5 hours. With a global delivery model and a team based in India, we provide round-the-clock support, ensuring your business runs smoothly and efficiently no matter the time zone. Our dedication to innovation and exceptional client service is at the core of what we do, driving long-term success for businesses globally.
    vsuc_fltilesrefresh_TrophyIcon OAuth
    Salesforce CRM
    jQuery Mobile
    Salesforce App Development
    DHTML
    Apex
    Payment Gateway Integration
    PHP
    Java
    Bootstrap
    jQuery
    AngularJS
    JavaScript
    HTML5
    AJAX
  • $80 hourly

    • 5.0/5
    • (44 jobs)
    Hello! I am Niko, a seasoned Software Engineer with a versatile 14-year career in the tech industry. My experience spans a broad range of PHP environments, from sophisticated frameworks to the foundational native code that underpins them. Here's the value I bring to your projects: ⚡ PHP Mastery Across Frameworks: While Laravel is a tool of choice for many projects due to its robust features, I am equally skilled in working with Symfony, CodeIgniter, and other PHP frameworks. My adaptability ensures that I can select the best tool for your project's specific needs or work within your existing framework with ease. ⚡ Framework-Agnostic Development: Beyond frameworks, I excel in crafting bespoke solutions with pure, native PHP. This flexibility means that the limitations of any single framework don't constrain your project and can be tailored precisely to your requirements. ⚡ Quality Assurance Through Testing: Whether working within a framework or with native PHP, my commitment to quality is demonstrated through rigorous testing with tools like PHPUnit. This ensures that every component of your application is reliable and robust. Full-Stack Capability: ⚡ My skills extend through the full stack, with proficiency in front-end technologies such as HTML, CSS, Bootstrap, JavaScript, and Vue.js. I create seamless user experiences that complement the solid back-end architecture. ⚡ Data Handling Excellence: With extensive experience in databases like MySQL and PostgreSQL, caching with Redis, and searching with ElasticSearch, your data will be managed with the utmost efficiency and reliability. ⚡ Scalability with Asynchronous Systems: I integrate message brokers like RabbitMQ for systems that demand high-throughput processing and scalability, ensuring that your application performs optimally under any load. ⚡ DevOps Integration: By leveraging modern DevOps practices and CI/CD pipelines, I enhance the software development lifecycle to ensure your product evolves quickly and smoothly from development to deployment. ⚡ Clear and Effective Communication: I may not be a native English speaker, but I possess a strong command of the language, particularly in technical contexts, ensuring we stay on the same page throughout the development process. Strategic Problem-Solving: My passion for tackling complex problems is complemented by a well-rounded understanding of software architecture and system operations, ensuring that I deliver not just code but comprehensive solutions. By partnering with me, you're not just getting a PHP developer; you're gaining a flexible and strategic ally dedicated to propelling your business forward with technology. I'm excited about bringing my broad PHP expertise to your project and am ready to deliver a product that stands out for its quality and craftsmanship. Ready to create something great together, Niko
    vsuc_fltilesrefresh_TrophyIcon OAuth
    GIS
    Unit Testing
    API Development
    Elasticsearch
    PostgreSQL
    Git
    PHP
    Laravel
    MySQL
    Web Service
  • $70 hourly

    • 3.6/5
    • (18 jobs)
    I am a dedicated and adaptable professional with over a decade of hands-on programming expertise and five years specializing in cyber security. Currently contracted with Google, I serve as a software developer contributing to Google Workspace, utilizing my proficiency in JavaScript, Google Apps Script, and Python. My role involves providing developer support and crafting third-party applications with OAuth2 integration for seamless Google Workspace functionality. Key Skills: Main Programming Languages: JavaScript, PHP, Google Apps Script, Python Security Expertise: Cyber Security, OAuth2 Google Workspace: Integration, Developer Support Cloud Services: Proficient in Amazon Web Services as well as Google Cloud. WordPress: Expertise in WordPress development Database Technologies: Hands-on experience with MySQL, as well as Firestore and Firebase databases Scripting: Extensive experience in Google Apps Script Development: Web Development, Web Applications, Chrome Extensions, Wordpress Automation: Over two decades of coding and automation script creation Data Analysis: Proficient in leveraging scripting for data analysis Networking: Strong foundation in networking principles Educational Background: I read Physics for my bachelor's degree, and then pursued postgraduate studies in Cyber Security, enhancing my theoretical knowledge and practical skills in the field. Volunteer Work: For almost half a decade, I have actively volunteered in public forums, offering scripting expertise to users of Google Apps Script and Google Workspace technologies. This experience has allowed me to stay at the forefront of industry trends and deepen my understanding of user needs. Language Proficiency: As a native English speaker raised in a bilingual household in the south of England, I am fluent in both English and Spanish. This language versatility enhances my ability to communicate effectively and work seamlessly with diverse teams. Experience Highlights: Google Contract: Currently engaged with Google, contributing to Google Workspace as a software developer. Scripting Mastery: Over 20 years of coding and automation script development, covering a broad spectrum from Google Workspace integration to productivity tools, web development, data analysis, and Chrome Extensions. Security Focus: In-depth experience as a cyber security engineer, emphasizing security protocols such as OAuth2. AWS, WordPress, Firestore: Well-versed in Amazon Web Services, WordPress development, and Firestore, bringing a comprehensive skill set to diverse projects. Experience setting up AWS EC2 and RDS instances with LAMP stack Why Choose Me: Proven Track Record: With a decade of programming and cyber security experience, I have a solid track record of delivering high-quality solutions. Google Workspace Expertise: My current role at Google showcases my proficiency in Google Workspace integration, developer support, and application development. Full Stack Skills: From AWS to WordPress and Firestore, I possess a versatile skill set for comprehensive project execution. Communication Skills: Fluent in both English and Spanish, I bring effective communication skills to any project, fostering clear and collaborative interactions. Let's Discuss: Feel free to reach out and discuss your project requirements. I am confident in my ability to contribute effectively and bring valuable insights to the table. Let's create something exceptional together!
    vsuc_fltilesrefresh_TrophyIcon OAuth
    JavaScript
    Python
    CSS
    Google Apps Script
    Google APIs
    Google
    Front-End Development
    Scripting
    HTML
    Google Sheets
    Google Docs
    Automation
    Google Cloud Platform
    Google Slides
  • $55 hourly

    • 4.9/5
    • (17 jobs)
    Highly skilled Unity certified developer and game engine specialist with 9 years of experience in designing and developing augmented reality apps and prototypes. Proficient in Unity concepts, tools, and services, with a deep understanding of SOLID principles and game design patterns. Strong background in system analysis and software development, with 20 years of industry experience. Proven track record of successfully delivering projects and pushing oneself to be an industry expert.
    vsuc_fltilesrefresh_TrophyIcon OAuth
    Blockchain
    WebGL
    iOS
    Android App
    Jira
    Git
    Firebase
    Multiplayer
    Game Development
    Unity
    ARKit
    C#
    Augmented Reality
    Virtual Reality
    ARCore
  • $20 hourly

    • 3.7/5
    • (65 jobs)
    Myself Sita Devi, I'm expertise in web development and software programming field with over 6 years of experience. Technical Expertise: - Net Framework: Net 3.5, 4.0, 4.6.1 and Compact Framework - Databases: MongoDb, SQL Server 2008, mySQL - Data Access Approach : RMO(ReplicationManagementObject), ADO, ADO.Net, Entity Framework - Languages : C#, VB.Net, Visual Basic 6.0, AngularJs, Node.Js, Asp.Net core - Report Writer: Crystal Reports - Internet Technologies: Ajax, ASP.Net, XML, MVC 3 (Aspx, razor) - SOA :WCF - CRM and CMS: Kentico, DNN, Zoho, Salesforce, Nopcommerce, Infusion soft Services: - Quality Work - Full Time Availability For Calls/Chat - Support and bug fixing to Existing Project even after job is done. - Experienced and Value Combination - Coding Standards - Complete Testing - Developing cost-effective, user-friendly solutions on time Thanks & Regards Sita Devi
    vsuc_fltilesrefresh_TrophyIcon OAuth
    Kurento
    Zoho CRM
    Zoho Creator
    WebRTC
    AngularJS
    ASP.NET Core
    ASP.NET MVC
    C#
    MySQL
  • $17 hourly

    • 5.0/5
    • (3 jobs)
    I am Sonam, an engineer with 10+ years of experience as a Full Stack developer that follows a high coding standards and write modular and reusable code, does unit tests, and always uses Git in my projects. Besides this, I have a degree in Computer Applications. I am part of the "TOP RATED" business consulting agency on Upwork - smartData Enterprises and we have been serving global clientele for the past 20 years by developing mid to enterprise-level applications targeting various business domains. In my past 10+ years of experience as a Full Stack Developer, I have been engaged in the development of Enterprise Level applications where I have served clients for the Healthcare Market Vertical from the ground up, especially on complex SAAS/Web-based applications that include MVP, Remote patient monitoring, consumer-directed healthcare, Insurance and billing, wellness, mental health, Benefit administration, claim processing, healthcare staffing, pharmacy etc. The majority of my projects are data-centric and I have also revamped front-end technologies of legacy applications to match the needs of the modern web world. My skills and experience: -- Solid knowledge in OOP, Design Patterns (MVP) -- Knowledge of modern PHP libraries and tools; -- Strong knowledge of programming patterns and algorithms. -- Knowledge and experience with front-end technologies; -- Expertise in server-side optimizations and general algorithms ; -- Ability to perform in a fast-paced agile environment; -- Ability to work as both a team member and independently; -- Strong analytical and problem-solving skills A glimpse of technical expertise: -- Programming languages: PHP; JavaScript; -- Frameworks and libraries: PHP: CorePhP, Laravel, CodeIgniter, CorePhP, CakePHP, WordPress, Angular -- Web technologies: HTML/XHTML/DHTML/HTML5, AJAX, CSS/CSS3, XML, SOAP, REST; -- APIs: Google API, Paypal, Stripe, Braintree, Facebook, Twitter, Mapbox, Google Maps -- Databases: MySQL, MSSQL, PostgreSQL -- Development of high-traffic and RESTful websites using PHP, with best practices like TDD, BDD -- Version control with Git, bitbucket. -- Agile SCRUM & Kanban. If you are looking for a zealous and determined developer with proven experience in the healthcare domain and great problem-solving skills, then invite me for an interview.
    vsuc_fltilesrefresh_TrophyIcon OAuth
    Electronic Medical Record
    MySQL Programming
    PostgreSQL Programming
    Healthcare Interoperability
    Healthcare
    Angular
    Laravel
    PHP
    JavaScript
    AngularJS
    jQuery
    Web Development
    CakePHP
  • $40 hourly

    • 5.0/5
    • (13 jobs)
    I'm a web developer with a broad set of experience including everything from installation, setup and management of a bare VM or dedicated server for web applications and databases, to full custom development of Drupal applications, QA testing and deployment of projects, writing user application manuals and so on. I'm also one of few developers on African soil that is certified by Acquia, the corporate arm and certification authority of the Drupal organization. The bulk of my knowledge is centered around Drupal where I worked on large corporate and NGO projects including Disney, World Economic Forum, Doctors Without Borders, JSE (Johannesburg Stock Exchange) and UCT (University of Cape Town) with some positioned internationally and others more specifically for the South African market. In more recent years I have gained exposure and working knowledge of React and Node.js and can provide decoupling services to Drupal clients, working on either the React frontend, API backend, or both. I always follow best industry practices and coding standards and have a good working knowledge of Git workflow which I use in current projects. From the project management side of things, I can manage the full lifecycle of a project with everything from assisting the client in developing their ideas into a workable concept, to in-depth project breakdowns and costing, deadlines and time scheduling, setting up of milestones and tracking progress of the project from start to launch. I have a good work ethic, exercise time management well and I communicate frequently with clients, keeping them in the loop on updates with their project and handling any queries they might have. Some periphery services I also offer include: newsletter and newsletter platform management, content management, website security & anti-spam, e-commerce store management and of course writing end-user application manuals for site editors and providing training for your employees to bring them up to speed on how to effectively use your website or web application and the best practices that go with it.
    vsuc_fltilesrefresh_TrophyIcon OAuth
    Drupal
    Twig
    Git
    MySQL
    Apache HTTP Server
    MongoDB
    NGINX
    Web Server
    Node.js
    SSH
    React
    Continuous Integration
    ExpressJS
    Apache Solr
  • $30 hourly

    • 5.0/5
    • (9 jobs)
    Hello! I'm a skilled Full-Stack Developer with extensive experience in building scalable, high-performance web applications. With expertise in both front-end and back-end development, I am proficient in React.js, Vue.js, Angular, Node.js, MongoDB, PostgreSQL, and AWS. My goal is to deliver top-notch solutions that meet your business needs, ensuring a seamless user experience and robust functionality. Over the 7 years, I have successfully completed a variety of projects, from dynamic single-page applications (SPAs) to complex enterprise-level systems. My strong foundation in software engineering allows me to tackle challenges effectively, from conceptualization to deployment, and my experience with cloud services like AWS ensures that your application will be secure, scalable, and reliable. Services Offered: Front-End Development: Building responsive, interactive UIs with React.js, Vue.js, and Angular. Optimizing performance for web applications. Implementing state management with Redux, Vuex, and similar libraries. Integrating RESTful APIs and GraphQL for dynamic data handling. Back-End Development: Designing and developing RESTful APIs and microservices with Node.js. Database design and management using MongoDB and PostgreSQL. Ensuring data integrity and security. Implementing authentication, authorization, and secure data storage. Full-Stack Solutions: End-to-end application development using the MERN (MongoDB, Express.js, React.js, Node.js) or MEVN (MongoDB, Express.js, Vue.js, Node.js) stack. Deployment and management of applications on AWS. Continuous Integration and Continuous Deployment (CI/CD) setup. Third-party API integration and custom middleware development. Cloud Services & DevOps: Setting up and managing cloud infrastructure on AWS. Implementing serverless architectures with AWS Lambda, API Gateway, and DynamoDB. Docker containerization and orchestration with Kubernetes. Automated testing and deployment pipelines. Why Work With Me? Client-Centered Approach: I prioritize understanding your needs and delivering solutions that align with your business goals. Quality Assurance: I am committed to writing clean, maintainable code with a focus on performance and security. Timely Delivery: I respect deadlines and work efficiently to ensure your project is completed on time. Clear Communication: Regular updates and transparent communication to keep you informed every step of the way. Let's turn your ideas into reality! I'm here to help you build something amazing. Feel free to reach out, and let's discuss how I can contribute to your project's success.
    vsuc_fltilesrefresh_TrophyIcon OAuth
    AWS CodeDeploy
    AWS Amplify
    AWS Lambda
    Redux
    Laravel
    PHP
    TypeScript
    Vue.js
    GraphQL
    HTML5
    ExpressJS
    Node.js
    React
    Next.js
    MongoDB
  • $26 hourly

    • 4.9/5
    • (20 jobs)
    🌟 Hello and Welcome! 👋 I am a results-driven Full-Stack Developer 🧑‍💻 with a passion for creating highly efficient, scalable solutions that deliver exceptional user experiences 🌟. With an extensive background in Node.js 🔄 and React.js ⚛️, I specialize in crafting robust systems and seamless integrations 🔗, enabling businesses to achieve their goals with confidence and precision. 🚀 🚀 Technical Expertise My professional toolkit is built to address a wide range of challenges, leveraging the latest technologies and methodologies: ⚙️ Technologies & Frameworks Backend Development: Proficient in Node.js 🛠️, Nest.js 🧱, and Express.js 🚦, delivering secure, performant APIs and services. Frontend Development: Expertise in React.js 🎨, including React state management, hooks, and component-driven architecture. Languages: Skilled in JavaScript ✍️, TypeScript 🔡, and their application in modern software development. ORMs & Database Management: Experienced with Prisma 🗂️, TypeORM 📋, and handling complex data interactions with PostgreSQL 🐘, MongoDB 🍃, MySQL 🛢️, AWS DynamoDB ☁️, and NoSQL solutions. ☁️ Cloud Services Skilled in designing and deploying scalable systems using AWS Services 💡, including Lambda (Node.js runtime) 🌀, API Gateway 🚪, SNS 📣, SQS 📨, and S3 📦. 💳 Payment Systems & API Integration Expertise in integrating secure, scalable payment solutions like Stripe 💳 and PayPal 💰, tailored for modern applications. Extensive experience in RESTful API 🌐 and GraphQL API 📜 development and consumption. 🐳 DevOps & Testing Containerization: Proficient in Docker 🐋 and Docker Compose, streamlining deployment workflows for consistent environments. Testing & QA: Mastery of tools like Mocha ☕, Jest 🧪, and Cypress 🛡️, ensuring high-quality, bug-free releases. 🌍 Industries Served With a versatile skill set, I have successfully delivered impactful solutions across multiple domains: Food & Beverage 🍽️ Tourism & Hospitality 🌴 Health & Wellness 💪 FinTech & Finance 💰 Education & E-learning 🎓 Retail & Consumer Goods 🛒 Real Estate 🏡 Media, Entertainment, and AI 🤖 🤝 Collaboration Style I value clear, proactive communication 💬 and excel in collaborative environments 🤗. Due to a speech impairment, my primary mode of interaction is through written communication 📝, ensuring precision and clarity in every exchange ✨. This approach has consistently supported seamless project coordination 🔗, fostering productive and meaningful collaborations 🛠️. 🌟 Why Choose Me? Whether developing enterprise-level applications 🏢, improving system performance ⚡, or creating tailored solutions 🎯, I am deeply committed to quality, innovation, and results 🌈. My approach is centered on: Efficiency: Crafting optimized solutions that scale with your business needs 📈. Reliability: Building systems with robust testing and continuous integration practices 🧪. End-User Focus: Delivering intuitive and engaging experiences across all touchpoints 🎨. I look forward to contributing my expertise 🧑‍💻 to your projects and helping you achieve your vision 🌠. Let’s chat 🤝 and create something extraordinary together! 🎉
    vsuc_fltilesrefresh_TrophyIcon OAuth
    Stripe
    Amazon S3
    AWS Lambda
    Docker
    API Integration
    ExpressJS
    MongoDB
    GraphQL
    MySQL
    TypeScript
    Amazon DynamoDB
    PostgreSQL
    Amazon Web Services
    Back-End Development
    Node.js
  • $65 hourly

    • 4.8/5
    • (87 jobs)
    I have over a decade of experience both corporate environments and as a freelancer. I am Microsoft Certified in web applications and Microsoft Access. I have experience years of experience building web applications and APIs with the .NET Framework and .NET Core. Web API experience includes OAuth. I am a full stack developer using Blazor. I have crafted API integrations as evidenced by my successful project NetTimeSolutions replication. These leverage Azure cloud services.
    vsuc_fltilesrefresh_TrophyIcon OAuth
    Microsoft SQL Server Programming
    Azure App Service
    User Authentication
    .NET Core
    Microsoft Azure
    Microsoft Access
    API Integration
    C#
    ASP.NET Web API
    .NET Framework
    Entity Framework
    ASP.NET MVC
    Blazor
  • $120 hourly

    • 5.0/5
    • (301 jobs)
    Senior WordPress and WooCommerce developer with over 7 years of experience. I am a solo dev that responds quickly and works fast. I do both fronted & backend development. I have built, maintained and worked on multiple 5 figure + WooCommerce sites. I specialize in both frontend and backend development. I can help with maintenance, bug fixes, and any other issues you may run into while running your WordPress site. I currently have availability and am ready to get started ASAP. Proud Track Record: Completed over 285 projects (and counting!) 82% repeat customers. Interested? Drop me a message, and let's get started. Here's what I commonly do: Build custom functionality. Integrate APIs. Theme development. Dive into your existing code base, clean up the mess, and get it running smoothly. Automating repetitive tasks. Plugin development. Full site builds. Consult how AI and ChatGPT can improve your business. And more. Skills and Expertise: WordPress. WooCommerce. WooCommerce Subscriptions. AI & ChatGPT solutions. PHP, JavaScript, and CSS. Timber / Twig. WordPress Job Manager, Elementor, Divi, WPRSS aggregator.
    vsuc_fltilesrefresh_TrophyIcon OAuth
    API
    Ecommerce Website Development
    Plugin Customization
    Theme Customization
    Website Customization
    WooCommerce
    Elementor
    Plugin Development
    API Development
    JavaScript
    Web Development
    PHP
    WordPress
  • $40 hourly

    • 4.8/5
    • (158 jobs)
    👋 Hi there, welcome to my profile! I'm Zia, a multi-skilled, highly dedicated professional with 8+ years of experience in freelance web development, e-commerce website development, and SaaS application development. I excel in JavaScript development and have delivered 100+ projects, including Fortune 50-scale projects. 💥 Key Skills: - Frontend: JavaScript, Vue.js, React.js, Next.js, Nuxt.js, TypeScript, jQuery, AngularJS, Apollo GraphQL, Redux, Vuetify, Web3, Chakra UI, Tailwind CSS, D3.js, HTML5, CSS3, LESS, PSD to HTML, Material UI, Angular Material, Ant Design - Backend: Node.js, PHP, Express.js, GraphQL, Sanity.io, Strapi, Mocha, Chai - Web 3: Moralis, ERC-721, NFTs - Databases: PostgreSQL, MySQL, SQLite, MongoDB, DynamoDB, Firebase/Cloud Store, Sequelize, TypeORM, Mongoose (ODM) - APIs: Twilio, Google Maps API, Stripe, PayPal, 2Checkout, Coinbase - Hosting/Deployments: Domain configuration, SSL, Heroku, CLI, CI/CD, AWS EC2, dedicated servers, Cpanel - Code Management Tools: GitHub, GitLab, Bitbucket ✨ I always ensure quality service. If you need help or have any queries, please get in touch with me. I'll be happy to assist. Rest assured, when hiring me, I'll treat your business as my own because your success is my success. Let's get connected on Upwork. I would love to connect with you. All Skills: JavaScript, OpenAI, OpenAI chatbot, ChatGPT OpenAI, APIs, databases, API development, MySQL, MongoDB, Redis, Docker, EC2, S3, Git, React, React developer, React Native, React TypeScript, ReactJS developer, ReactJS Redux, ReactJS, frontend React, TypeScript, React.js Node.js, Next.js, NextJS developer, Next.js Tailwind, React NextJS, Next.js, Node.js, Node, Nest.js, Node.js AWS, Express.js, React Node, Node.js developer, backend Node.js, full stack developer React Node. 🔗 Let's make your project a success!
    vsuc_fltilesrefresh_TrophyIcon OAuth
    NoSQL Database
    MongoDB
    Database
    TypeScript
    API
    Sass
    Next.js
    Nuxt.js
    React Bootstrap
    React
    JavaScript
    web3.js
    Node.js
  • $60 hourly

    • 4.8/5
    • (46 jobs)
    (Visit brysona.dev) 8+ years experience in front-end web technologies, specializing in React and Typescript and the frameworks Next.js and Gatsby. What I am good at - writing clean, readable code - applying ideas in a way that meshes well with the online world - keeping lines of communication clear, direct and transparent - converting designs into pixel perfect code - all kinds of animation including layout, scroll-based and 3D - Improving SEO and performance scores Tech stack - React - Typescript - Next.js / Vercel / v0 - Netlify - git / git-cms / github - Framer Motion Artificial Intelligence - code generation (v0, bolt.new) - code editing (cursor) - image generation - stable diffusion Game design - I have made a top-down shooter, look at my links below moth-game.netlify.app
    vsuc_fltilesrefresh_TrophyIcon OAuth
    AI Text-to-Image
    AI Builder
    Web Development
    Three.js
    React
    Gatsby.js
    Web Application
    SVG
    Git
    Next.js
    CSS
    TypeScript
    JavaScript
    WordPress
    GraphQL
  • $30 hourly

    • 4.2/5
    • (15 jobs)
    ✅ Available Now! 50 Positive Client Reviews - 50 Projects Delivered on Time - 10 Certifications Completed 5 years of dedicated experience in the world of software development in JavaScript and Python Frameworks. Throughout my journey, I've successfully navigated various projects, honing my skills in blockchain, smart contracts, web development, app development, and cloud technologies. 🚀 Tech Proficiency: Solidity, JavaScript, Python, Rust, NestJs, Truffle, Django, React, NodeJs, Web3 🎓 Certifications: Solidity: Ethereum and Solidity - The Complete Developer's Guide, Udemy EOS and C++: Learning Blockchain Development with EOS and C++, Udemy Golang: How to Build a Blockchain in Go Guide, Udemy Rust: Solana Blockchain Developer Bootcamp with Rust + JavaScript, Udemy 🏆 Achievements: 2023: Developed a Social Media App with Engage and Earn Rewards features 2022: Successfully launched 'Gandalf Town' - NFT Selling ERC721A, selling out 10,000 NFTs in just 1 hour 2022: Achieved another milestone by selling out 10,000 NFTs in 1 hour and launching 'Bastard Penguins' Comics and NFT Staking 2021: Sold out 10,000 NFTs in 4 days for 'Cheeky Lion Club' - NFT Selling 🔍 Proud of My Code: I take pride in my coding achievements, constantly striving for excellence in every project I undertake. 🎥 YouTube Channel: I also run a YouTube channel dedicated to teaching software development. Some featured videos include: 'How to verify a smart contract in remix Ethereum with a plugin' 'How to create your cryptocurrency on the Ethereum blockchain - a step-by-step guide' I hold a Bachelor's Degree in Computer Science from FAST NUCES If you're looking for a skilled and passionate software developer with a proven track record, I'm here to bring your projects to life. Let's collaborate and turn your ideas into reality!
    vsuc_fltilesrefresh_TrophyIcon OAuth
    Social Media Account Integration
    Django
    Firebase
    Flutter
    Blockchain
    Web3
    JavaScript
    NFT
    web3.js
    NFT Minting
    Ethereum
    Solidity
    Node.js
    Smart Contract
  • $40 hourly

    • 4.9/5
    • (141 jobs)
    With over 7 years of experience in front end development, I specialize in building high-performance web applications using ReactJS, NextJS and Gatsby. My projects have consistently resulted in improved performance and user satisfaction. I bring a proactive approach to project leadership and technical innovation.
    vsuc_fltilesrefresh_TrophyIcon OAuth
    Bootstrap
    AngularJS
    User Interface Design
    WordPress
    Gatsby.js
    Next.js
    React
    jQuery
    Data Scraping
    JavaScript
  • $40 hourly

    • 5.0/5
    • (5 jobs)
    Over 6 years of experience in Frontend development. 100% Job success. I specialize in developing modern and cross-browser web applications. With a strong background in both independent project work and collaborative team efforts, I bring a unique perspective to the table. My experience in Quality Assurance has honed my attention to detail, ensuring that every aspect of a project is meticulously reviewed and refined. I am self-organized, responsible, and committed to continually enhancing my skills. I'm seeking a company or clients with whom I can fully unleash my talents and make a meaningful impact. Skills: - React / Next.js - HTML / CSS / JS - Redux / Redux-toolkit - React-query, SWR by vercel - React Native - Material UI - Tailwind css - CSS preprocessors / CSS-modules / Styled components Tools: Git, Webpack, Jira, Asana, Trello
    vsuc_fltilesrefresh_TrophyIcon OAuth
    PSD to HTML
    React Native
    Redux
    webpack
    HTML
    JavaScript
    CSS
    React
    Git
    Responsive Design
  • $55 hourly

    • 5.0/5
    • (22 jobs)
    You have the idea and I will make sure it's implemented. I am a FullStack Web Developer with over 8 years of experience. My primary skill set includes React + Redux on the client and NodeJS (Express) on the backend. I have a strong expertise in Software development life cycle from modeling to deploying. I worked with: - NodeJS, Express - React, AngularJS - Telegram API - PHP, Laravel, Symfony - MySQL, MongoDB, Redis, Elasticsearch - Docker, Vagrant - Nginx, Haproxy - Various AWS services - Git, GitHub, Bitbucket - Teamcity, Travis, Jenkins - PHPUnit With these and other technologies I've worked on about 20 projects of various complexity. During the last period I was mainly involved into a number of projects related to Inventory Management systems, High Load systems and Advertising industry. On recent projects I was assigned as Senior Developer or Tech Lead. I have experience mentoring team members, developed education program and managed developers working through it, prepared lectures for our department developers. I will ask you a ton of questions to clarify the requirements and this way I will save your money otherwise spent on the afterwards fixes or rewrites. Here is what I can do for you: - Create app from scratch to enable your businesses - Develop new features for your existing apps - Fix buggy apps - Optimize your apps I would be more than happy to offer you my services, so feel free to contact me for an interview. Look forward to hear from you.
    vsuc_fltilesrefresh_TrophyIcon OAuth
    Cryptocurrency
    Telegram API
    JavaScript
    HTML5
    React
    Node.js
    RESTful Architecture
    PHP
    MongoDB
    Laravel
  • $40 hourly

    • 5.0/5
    • (40 jobs)
    Pseudonym: Risky Pathak I am an individual full-time freelance programmer with 13+ years of expertise in MS Technologies (C# .Net). Before working as a freelancer(before 2014), I was associated with Microsoft & AMEX as a vendor and have worked on various projects/applications for them. Few things differentiate me from other guys here, i.e. 1. Good Analytic Skills & String Grasping Power 2. Applying Best Practices 3. Fast Learner
    vsuc_fltilesrefresh_TrophyIcon OAuth
    Microsoft SQL Server Administration
    .NET Core
    LINQ
    Microsoft Teams
    Angular 2
    Model View ViewModel
    jQuery
    ASP.NET MVC
    ASP.NET
    Windows Presentation Foundation
    RESTful API
    .NET Framework
    C#
  • $40 hourly

    • 5.0/5
    • (58 jobs)
    Full Stack developer with 6+ years experience. I am a professional full-stack web developer with extensive experience in software development and Linux system administration. I can build entire apps with complex business logic from scratch or optimize an existing one. I have strong OOP skills, deep knowledge of Python and Django framework programming as well as huge experience in database integration and high-load optimizations. Here's a brief overview of my skills and experience: Architecture: Clean Architecture, Domain Driven Design, REST APIs, patterns Databases and ORMs: Django ORM , GraphQL, Postgres, MySQL Back end: Python – Django, Flask, FastAPI, Laravel (different versions up to the latest One), R language, Scikit-Learn for Machine Learning, and PHP. Front end: Angular, VueJS, ReactJS, JavaScript/Typescript, CSS, Bootstrap, D3JS, and Flex layouts. Cloud technologies: AWS, GCP (App service, Functions, Database services, Storage, and much more) GIS Stacks: Leaflet, Bing, Geonames, over street Google, Open layer, and Map Box Security: OAuth2 with Third Party Integration B2B /B2C Payment Gateways: Stripe, PayPal, and Checkout DevOps Tools: DevOps for Github, Gitlab, Celery, and CI/CD pipelines Quality Assurance Tools: Github Integration, CircleCi, Coverall, code climate with Github Project Management Tools: JIRA, ASANA, TRELLO, GitHub Issues & Flows, Click Up, Slack and Basecamp and VCS I find myself a responsible, self-motivated, solution-driven developer and always meet clients' expectations in terms of code quality and turnaround.
    vsuc_fltilesrefresh_TrophyIcon OAuth
    Amazon EC2
    Laravel
    Node.js
    Next.js
    React Native
    Angular
    React
    JavaScript
    Microservice
    Docker
    Flask
    RESTful API
    API Development
    Django
    Python
  • $15 hourly

    • 5.0/5
    • (6 jobs)
    I started his career as a programmer in Delphi, I work more than 15 years. There are also skills in C # (winforms) . (MSSQL, Oracle, MySQL, SQLite, PostgreSQL), also has skills with api functions, sound, theards etc. Working with REST API, like Elation, SureScript. Wrote simple backend server. Mobile develop on Delphi and Java. Have skill with https, ftps, sftp (etc) protocols.
    vsuc_fltilesrefresh_TrophyIcon OAuth
    Kotlin
    Object Pascal
    Delphi
  • $20 hourly

    • 5.0/5
    • (34 jobs)
    Computer programming is based on LOGIC. From its fundamental form to the highest-level programming languages, logic is the main ingredient to develop software. I believe that programming requires a certain level of creativity and passion, which I duly have! A full-stack developer excelling at ASP.Net and React.js. Skills that I have acquired over the years are: • The expertise to React & .Net framework with its newest features • Strong understanding of the structure and logic of Object-Oriented programming • Hand-on experience with Redis, GraphQL, REST services / APIs • Efficient with database like SQL, MySQL, MongoDB, etc • Collaborative team member with strong communication and interpersonal skills • Experience with cloud-based technologies such as AWS / Azure as well as familiar with the micro-services architecture • Web development experience in a CMS platform such as Kentico, Sitefinity, and Wordpress • Experience with responsive client-side web development – HTML 5, CSS/SASS, JavaScript, jQuery and Bootstrap My personal commitment to quality and on-schedule delivery makes me stand apart from others. If you are on the lookout for a hard-working and dedicated person, do connect with me. Thank you in anticipation.
    vsuc_fltilesrefresh_TrophyIcon OAuth
    Microsoft SQL Server Administration
    Redux Saga
    Redux
    Angular
    React
    Git
    ExpressJS
    webpack
    Node.js
    ASP.NET
  • $40 hourly

    • 5.0/5
    • (44 jobs)
    My goal is to make my clients happy and successful. As a software engineer, I believe that my work should not only provide technical solutions but also share knowledge and help my clients make informed decisions. With over 5 years of professional experience, I specialize in building full-stack, scalable web applications using the MERN stack with TypeScript and AWS/Firebase. I have worked in a variety of environments, ranging from small startups to SMEs. Here's a summary of my expertise: * Building full-stack web apps with MERN stack (TypeScript) and AWS/Firebase * Creating Chrome/Firefox/Edge extensions using modern solutions like React, Webpack, and Material UI, or Plasmo In detail, my technical skills include: * Chrome extension development using state-of-the-art technologies with React, MaterialUI, and Plasmo/webpack. * MongoDB/MySQL and Node.js (6 years of experience) * React, and Material UI (4 years of experience) * AWS Lambda, API Gateway, DynamoDB, S3, and Amplify * Web Scraping. * OpenAI, LLM, Langchain. * Google App Script. I'm passionate about building long-term working relationships and partnerships, so don't hesitate to contact me here on Upwork.
    vsuc_fltilesrefresh_TrophyIcon OAuth
    Artificial Intelligence
    Large Language Model
    Google Apps Script
    API
    OpenAI Codex Prompt
    API Development
    Web Development
    TypeScript
    MongoDB
    React
    Node.js
    Next.js
    Google Chrome Extension
    JavaScript
    ExpressJS
  • $45 hourly

    • 5.0/5
    • (6 jobs)
    Struggling to find a Frontend Developer who can transform your ideas into cutting-edge, web and mobile applications? Look no further. As a Certified Next Js and React Developer, I specialize in creating enterprise-grade custom solutions that not only meet your current needs but also scale seamlessly with your business growth. With my comprehensive expertise in web development and mobile app development, I offer end-to-end solutions that bridge the gap between front-end and back-end technologies. As a frontend developer, I excel in crafting responsive and intuitive user interfaces using React.js. My proficiency as a Next.js developer ensures your web applications are blazing fast and SEO-friendly. By leveraging AI integration, I create intelligent features that set your applications apart in today's competitive digital landscape. What sets me apart is my unique blend of technical prowess and business acumen. As a Certified React Developer for Frontend Development with a proven track record of delivering enterprise-grade projects, I bring more than just coding skills to the table. I offer strategic insights, scalable architectures, and a commitment to delivering high-performance, future-proof solutions that drive tangible business results. As a professional frontend developer with 5 years of experience as React Developer and Next Js Developer, I specialize in full stack development using React.js, Next.js, Node.js, and Express.js. I've successfully delivered over 50 projects worldwide, from small businesses to large enterprises. My goal is to provide high-quality, custom web solutions tailored to each client's unique needs. My comprehensive skill set and services are designed to address the full spectrum of web and mobile development needs, from concept to deployment and beyond. Here's what I bring to the table: 💻 Custom Web Development: I specialize in building custom web applications using React and Next.js, crafting unique and tailored solutions for your specific needs. 🚀 Full Stack Development (MERN Stack): End-to-end development using MongoDB, Express.js, React.js, and Node.js for scalable and efficient web applications. 📱 Mobile App Development: Cross-platform mobile app development using React Native, ensuring a native-like experience on both iOS and Android. 🧠 AI-Driven Web and Mobile Applications: Integration of AI and machine learning capabilities to create intelligent, data-driven applications. 🏢 Enterprise-Grade Custom Solutions: Tailored web and mobile solutions designed to meet the specific needs of large-scale businesses and organizations. ⚛️ React and Next.js Front-End Development: Creating dynamic, responsive, and high-performance user interfaces using the latest React.js and Next.js technologies. 🔧 Node.js and Express.js Back-End Development: Building robust, scalable server-side applications and APIs to power your web and mobile applications. 📈 Scalable and High-Performance Architecture Design: Designing system architectures that can handle growth and maintain performance under high loads. 🔗 RESTful API and GraphQL Development: Creating efficient and flexible APIs to enable seamless communication between front-end and back-end systems. ☁️ Cloud Integration and Deployment: Leveraging cloud platforms for efficient deployment, scaling, and management of web and mobile applications. To deliver cutting-edge solutions, I leverage a wide array of modern tools and technologies. Here's a snapshot of my technical toolkit: 🎨 Frontend: React Js, Next Js, Redux, Material-UI, Tailwind CSS, React Query 🖥️ Backend: Node Js, Express Js, RESTful APIs, GraphQL, Nest Js 📱 Mobile: React Native, Expo 🗄️ Database: MongoDB, MySQL, PostgreSQL, Firebase 🔄 Version Control: Git, GitHub, Bitbucket ☁️ Cloud Platforms: AWS, Microsoft Azure DevOps 🤖 AI/ML Integration 🧪 Testing: Jest, Mocha, Cypress ⚡ Performance Optimization My approach to delivering high-quality web and mobile solutions is rooted in: ✅ Agile Methodology: Ensuring flexibility and continuous improvement throughout the project lifecycle ✅ Client-Centric Communication: Regular updates and collaborative problem-solving to ensure your vision is realized ✅ Quality Assurance: Rigorous testing to guarantee robust, bug-free applications that meet the highest standards ✅ Performance Optimization: Leveraging cutting-edge tools and techniques to ensure your applications run at peak efficiency ✅ Scalable Architecture: Designing solutions that grow with your business, future-proofing your investment ✅ Security-First Mindset: Implementing best practices and the latest security measures to protect your data and users Ready to elevate your digital presence with state-of-the-art web and mobile solutions? Let's connect and discuss how I can bring your vision to life. Contact me now to schedule a consultation and take the first step towards transforming your business with custom applications that set you apart from the competition.
    vsuc_fltilesrefresh_TrophyIcon OAuth
    AI App Development
    ChatGPT API Integration
    ChatGPT API
    SaaS Development
    MongoDB
    Tailwind CSS
    Mobile App Development
    React Native
    Full-Stack Development
    Back-End Development
    TypeScript
    Node.js
    Next.js
    React
    Front-End Development
  • Want to browse more freelancers?
    Sign up

How it works

1. Post a job

Tell us what you need. Provide as many details as possible, but don’t worry about getting it perfect.

2. Talent comes to you

Get qualified proposals within 24 hours, and meet the candidates you’re excited about. Hire as soon as you’re ready.

3. Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

4. Payment simplified

Receive invoices and make payments through Upwork. Only pay for work you authorize.

Trusted by

How do I hire a OAuth Developer on Upwork?

You can hire a OAuth Developer on Upwork in four simple steps:

  • Create a job post tailored to your OAuth Developer project scope. We’ll walk you through the process step by step.
  • Browse top OAuth Developer talent on Upwork and invite them to your project.
  • Once the proposals start flowing in, create a shortlist of top OAuth Developer profiles and interview.
  • Hire the right OAuth Developer for your project from Upwork, the world’s largest work marketplace.

At Upwork, we believe talent staffing should be easy.

How much does it cost to hire a OAuth Developer?

Rates charged by OAuth Developers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.

Why hire a OAuth Developer on Upwork?

As the world’s work marketplace, we connect highly-skilled freelance OAuth Developers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream OAuth Developer team you need to succeed.

Can I hire a OAuth Developer within 24 hours on Upwork?

Depending on availability and the quality of your job post, it’s entirely possible to sign up for Upwork and receive OAuth Developer proposals within 24 hours of posting a job description.

Schedule a call

Looking to hire for long-term or full-time assignments? See how Full-time hiring on Upwork simplifies the process.