OAuth Developers For Hire
Showing 69 results
Sponsored Freelancers
-
Hire miguelml87
I help startups and businesses build scalable, secure, and high-performance applications. With over a decade of software engineering experience, I've worked on everything from MVPs for startups to large-scale enterprise systems handling millions of users and transactions. I believe in writing clean, maintainable code...I help startups and businesses build scalable, secure, and high-performance applications. With over a decade of software engineering experience, I've worked on everything from MVPs for startups to large-scale enterprise systems handling millions of users and transactions. I believe in writing clean, maintainable code while keeping business goals at the center of every decision. My goal is simple: deliver software that works, scales, and creates value for your business. less -
Hire johannclouieh
johannclouieh johannclouieh
$25 USD / hour
Senior Full-Stack Web & AI & Mobile Developer | 🏆Philippines⭐⭐⭐⭐⭐ I help founders and businesses build SaaS products, automate business workflows, integrate AI features, and improve existing applications that are incomplete, unstable, difficult to maintain, or not yet ready for production. My primary stack is Laravel/PHP, React, TypeScript, Node.js, PostgreSQL/MySQL, AWS, and...⭐⭐⭐⭐⭐ I help founders and businesses build SaaS products, automate business workflows, integrate AI features, and improve existing applications that are incomplete, unstable, difficult to maintain, or not yet ready for production. My primary stack is Laravel/PHP, React, TypeScript, Node.js, PostgreSQL/MySQL, AWS, and Docker. I work across the full application lifecycle—from backend APIs and frontend dashboards to AI integrations, automation workflows, payments, third-party services, infrastructure, deployment, performance, and security. Core Expertise ✔️ Laravel, PHP, MySQL, Moodle & REST API development ✔️ React, TypeScript & Node.js ✔️ SaaS architecture and existing-platform development ✔️ Stripe, PayPal & third-party API integrations ✔️ PostgreSQL, MySQL, MongoDB & Redis ✔️ AWS, Docker, CI/CD & production deployments ✔️ Authentication, permissions & application security ✔️ Performance optimization, debugging & technical debt cleanup ✔️ Admin dashboards and internal management systems ✔️ Testing, refactoring and production stabilization ✔️ GIS AI & Automation I help businesses add practical AI and automation features that reduce manual work and improve existing products and workflows. ✔️ GoHighLevel CRM setup, automation and workflow integrations ✔️ OpenAI, Claude and LLM API integrations ✔️ AI assistants, chatbots and internal copilots ✔️ AI-powered search, summarization and content generation ✔️ Document processing and structured data extraction ✔️ RAG and knowledge-base integrations ✔️ Automated customer support and internal workflows ✔️ CRM, email and business process automation ✔️ API-driven workflow automation and scheduled jobs ✔️ n8n, Zapier and webhook-based integrations I focus on using AI where it creates a practical business benefit rather than adding AI simply because it is popular. Mobile Development I also build cross-platform mobile applications with Flutter and React Native, including: ✔️ iOS & Android applications ✔️ Authentication and payments ✔️ Push notifications ✔️ Maps, GPS and location-based functionality ✔️ Real-time features ✔️ Third-party SDK and API integrations E-commerce For businesses running e-commerce platforms, I also work with Shopify and Magento, including: ✔️ Shopify development and theme customization ✔️ Shopify app and API integrations ✔️ Magento maintenance and modernization ✔️ Magento-to-Shopify migrations ✔️ Product, customer, order and content migration ✔️ URL mapping, 301 redirects and SEO preservation ✔️ E-commerce performance optimization How I Work 💪 I’m comfortable taking over projects developed by another team or developer. I review the current architecture first, identify the highest-risk problems, and prioritize the work that has the biggest impact on getting the product stable and into production. You can expect clear progress updates, early communication about blockers, practical technical recommendations, and documentation for important changes. less -
Hire naminghn
As a product-focused full-stack developer with a deep background in end-to-end software delivery, I specialize in translating complex business requirements into high-performance, maintainable web applications. I bridge the gap between engineering and business goals, architecting scalable systems from the ground up,...As a product-focused full-stack developer with a deep background in end-to-end software delivery, I specialize in translating complex business requirements into high-performance, maintainable web applications. I bridge the gap between engineering and business goals, architecting scalable systems from the ground up, optimizing existing systems for speed and conversion, and ensuring clean, type-safe codebases that allow teams to iterate rapidly without breaking production. Having operated across the full development lifecycle for startups and mid-sized companies, I bring strong professional maturity, cross-functional communication, and absolute ownership to multidisciplinary teams. Core Technical Competencies Product Architecture & Backend Engineering: Languages & Frameworks: PHP (Laravel), Modern JavaScript / TypeScript (Node.js, NestJS ecosystem). System Design: Designing scalable RESTful APIs, secure authentication workflows (OAuth/JWT), background job queues, and advanced data caching strategies. Database Management: Database schema design, raw query optimization, and structuring efficient data relationships. Frontend & User Interface Engineering: Core Stack: React, Next.js, Redux, and modern JavaScript (ES6+). UI Systems: High proficiency translating complex Figma/Adobe XD designs into pixel-perfect, accessible components using Tailwind CSS, shadcn/ui, and Bootstrap. Performance & Core Web Vitals: Building responsive, mobile-first, and SEO-optimized interfaces focused on speed, page load minimization, and user retention. Cloud, DevOps & Infrastructure: Deployment Workflows: Version control via complex Git workflows, containerization with Docker, and automated testing via CI/CD pipelines. Cloud Operations: Managing environments, server configurations, and media storage hosting using AWS (S3, EC2) and modern cloud providers. less -
Hire severino0
Senior Full-Stack Developer with 10+ years of experience designing and delivering scalable web applications, SaaS platforms, marketplace systems, and cross-platform mobile applications. Strong expertise in React, Next.js, Node.js, NestJS, React Native, and Flutter, with advanced experience in database architecture,...Senior Full-Stack Developer with 10+ years of experience designing and delivering scalable web applications, SaaS platforms, marketplace systems, and cross-platform mobile applications. Strong expertise in React, Next.js, Node.js, NestJS, React Native, and Flutter, with advanced experience in database architecture, data modeling, optimization, and high-performance data systems using PostgreSQL, MySQL, and NoSQL technologies. Experienced in designing normalized and scalable schemas, complex relational models, indexing strategies, query optimization, database migrations, transaction management, data integrity enforcement, caching strategies, and performance tuning for high-volume production environments. Skilled in architecting backend systems with efficient API layers, ORM frameworks, event-driven data workflows, and reliable data persistence strategies. Experienced with cloud-native deployments on AWS, payment integrations with Stripe, distributed systems, and building secure production-ready platforms serving thousands of users. Focused on clean architecture, scalability, reliability, maintainability, and business-driven engineering solutions. less -
Hire taraskkorol
I build modern web applications and AI-powered SaaS products from idea to production. My focus is creating reliable, scalable systems that are easy to maintain and ready for real users. I work across frontend, backend, APIs, and AI integrations, helping startups and businesses turn concepts into working products...I build modern web applications and AI-powered SaaS products from idea to production. My focus is creating reliable, scalable systems that are easy to maintain and ready for real users. I work across frontend, backend, APIs, and AI integrations, helping startups and businesses turn concepts into working products quickly and cleanly. What I can help with: • Full-stack web development • AI features and automation • SaaS architecture and MVP builds • API integrations and performance optimization - Mobile App development with AI Integration I value clear communication, realistic timelines, and delivering solutions that actually solve business problems. less -
Hire pankajgarg86
Top 1% Preferred Freelancer (Based on Platform Ranking) I am a Professional Full-Stack Developer with over 10+ years of experience delivering scalable, high-performance web and application solutions. I focus on clean architecture, performance optimization, and long-term maintainability. My goal is not just to...Top 1% Preferred Freelancer (Based on Platform Ranking) I am a Professional Full-Stack Developer with over 10+ years of experience delivering scalable, high-performance web and application solutions. I focus on clean architecture, performance optimization, and long-term maintainability. My goal is not just to complete a project, but to build solutions that exceed expectations and support business growth. 💻 Technical Skills Frontend & JavaScript: React.js | Next.js | TypeScript | JavaScript | Angular | Vue.js | jQuery | Node.js | Express.js | Kendo UI | Telerik | DevExpress | HTML5 | CSS3 | Bootstrap Backend & .NET: C# | ASP.NET Core | ASP.NET MVC | .NET 6/7/8 | Web API | REST API | Entity Framework | Dapper | ADO.NET | LINQ Database: SQL Server | MySQL | PostgreSQL | Database Design | Stored Procedures | Query Optimization PHP & Frameworks: PHP | Laravel | WordPress DevOps & Deployment: Azure | AWS | Linux | Nginx | Docker | Git | GitHub | CI/CD | Plesk | PM2 💡 What Makes Me Different • 10+ years experience in production systems • Top 1% on Freelancer • 100% On-Time & On-Budget • Clean, documented, maintainable code • Strong ownership mindset I don’t just complete tasks — I solve root problems. If you need stability, performance, and reliability, let’s discuss your project. less -
Hire salmanshahid5432
salmanshahid5432 salmanshahid5432
$15 USD / hour
Full Stack Developer Who Thinks Like a FounderPakistanFull Stack Developer Who Thinks Like a Founder I have helped founders ship 60+ products. Some are now doing $80k+ MRR. Let's talk about yours I do not just write code. I think about your product's growth, your users experience, and your team's ability to maintain what gets built. If something is not feasible, I will...Full Stack Developer Who Thinks Like a Founder I have helped founders ship 60+ products. Some are now doing $80k+ MRR. Let's talk about yours I do not just write code. I think about your product's growth, your users experience, and your team's ability to maintain what gets built. If something is not feasible, I will tell you before you spend a dollar on it and I back that with a 100% refund guarantee if I ever set wrong expectations Going freelance was not a fallback. It was a deliberate move to work closer with founders and actually care about what ships. I have worked across early MVPs, mid stage SaaS builds, complex AI integrations, and mobile apps 4 years in house first, then independently I take on fewer projects so I can do each one properly 𝐌𝐲 𝐒𝐭𝐚𝐭𝐬: ⭐ 5 star review streak across all projects 💯 100% Job Success Score on time, on budget 💰 Helped startups reach $80k+ MRR 💸 $50k+ earned across platforms 🥇 4+ years of full-stack experience 𝐌𝐲 𝐓𝐨𝐨𝐥𝐤𝐢𝐭: ◼ Frontend: React.js, Next.js, Vue.js, TypeScript, Tailwind CSS, Sass/SCSS, Framer, Web Animations, Progressive Web Apps ◼ Backend: Node.js, Express.js, Nest.js, Laravel, Python, REST & GraphQL APIs, MERN Stack ◼ Databases: MongoDB, MySQL, PostgreSQL, NoSQL, API Integration, CMS platforms ◼ AI & Automation: LLMs, AI Agents, Generative AI, LLM Integration, Prompt Engineering, NLP, OpenAI APIs, Workflow Automation ◼ Mobile: Flutter, React Native, Android SDK, Kotlin, Java, iOS, Swift 𝐖𝐡𝐚𝐭 𝐘𝐨𝐮 𝐖𝐢𝐥𝐥 𝐆𝐞𝐭 𝐖𝐨𝐫𝐤𝐢𝐧𝐠 𝐖𝐢𝐭𝐡 𝐌𝐞: ◼ Responses under 30 minutes unless I am asleep ◼ Code that your future self can actually read and maintain ◼ A straight "no" when something won't work no runaround, no wasted time ◼ A product built around your users, not just your requirements doc 𝐌𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐒𝐚𝐲: ◼ "Salman is an amazing contractor, bringing a wealth of talent, intelligence, and experience to our team. His communication was superb, and he delivered code of excellent quality." ◼ "Excellent knowledge, willingness to share, and the ability to simplify complex topics." 𝐖𝐞 𝐂𝐚𝐧 𝐁𝐞 𝐀 𝐆𝐨𝐨𝐝 𝐌𝐚𝐭𝐜𝐡 𝐈𝐟: ✅ You need someone who can jump in and contribute from day one ✅ You are building a SaaS, web app, mobile app, or AI powered product ✅ You want AI agents, LLM features, or automation baked into your stack ✅ You are looking for a partner who will push back when something is not the right call ✅ You need a Chrome extension, web automation tool, or productivity layer on top of an existing app 𝐖𝐞 𝐌𝐢𝐠𝐡𝐭 𝐍𝐨𝐭 𝐁𝐞 𝐀 𝐆𝐨𝐨𝐝 𝐅𝐢𝐭 𝐈𝐟: ❌ You want someone to just execute without any input or questions ❌ Mutual respect isn't something you value ❌ Your product is in the betting or adult entertainment space less -
Hire jonasdedzo
I am a Senior Full-Stack Developer with 10+ years of experience building modern, scalable, and high-performance web and mobile applications. I specialize in React.js, Next.js, Node.js, TypeScript, Python, PHP, Laravel, .NET, and API development, creating clean, responsive, and user-friendly digital solutions. My...I am a Senior Full-Stack Developer with 10+ years of experience building modern, scalable, and high-performance web and mobile applications. I specialize in React.js, Next.js, Node.js, TypeScript, Python, PHP, Laravel, .NET, and API development, creating clean, responsive, and user-friendly digital solutions. My expertise includes: ✅ Full-Stack Web Development ✅ Mobile App Development (React Native, Flutter, Android, iOS) ✅ AI Integration (OpenAI API, ChatGPT, LLM, AI Automation, AI Agents) ✅ SaaS Platforms & Business Applications ✅ REST API & Third-Party Integrations ✅ Database Design (PostgreSQL, MySQL, MongoDB, Redis) ✅ Cloud Deployment (AWS, Azure, Docker, VPS) I focus on delivering high-quality code, reliable solutions, and long-term value for clients. I can handle projects from idea to deployment, including architecture, development, testing, and maintenance. My goal is to build powerful, secure, and scalable software that helps businesses grow. less -
Hire muamerITdev
muamerITdev muamerITdev
$25 USD / hour
Full Stack PHP | Laravel | Vue | MERN | Excel SEOBosnia and HerzegovinaI am a passionate full-stack web developer with over 9 years of experience creating high-performance, clean, and scalable web applications that solve real-world problems. Specializing in technologies such as React, Next.js, Vue, Angular, Node.js, Django, Laravel, Wordpress, and more, and have been providing customized...I am a passionate full-stack web developer with over 9 years of experience creating high-performance, clean, and scalable web applications that solve real-world problems. Specializing in technologies such as React, Next.js, Vue, Angular, Node.js, Django, Laravel, Wordpress, and more, and have been providing customized solutions for solo founders, startups, digital agencies, and established companies worldwide. With a solid foundation in computer science and extensive experience in both front-end and back-end development, I excel at building everything from small business websites to complex, custom applications. I take pride in crafting seamless, engaging user experiences and leveraging technology to make life better. Driven by a commitment to continuous learning and professional growth, I am eager to embrace opportunities that allow me to gain global experience and contribute to a forward-thinking company. I’m currently seeking a new challenge in a global company where I can further develop my skills, contribute my expertise, and thrive in an environment that fosters both individual and team success. If you're looking for a reliable, solution-driven, and cost-effective full-stack developer with a focus on quality, I'd love to chat about how I can help bring your project or business to life. less -
Hire C0RETECHIES
Core Techies is a software development and AI engineering company helping startups and enterprises build scalable digital products, automation systems, AI-powered solutions, and SaaS platforms. Since 2013, we have successfully delivered 200+ projects across web applications, mobile apps, backend systems, enterprise...Core Techies is a software development and AI engineering company helping startups and enterprises build scalable digital products, automation systems, AI-powered solutions, and SaaS platforms. Since 2013, we have successfully delivered 200+ projects across web applications, mobile apps, backend systems, enterprise software, workflow automation, and AI-powered products. Our expertise includes: 🚀 AI Agents & AI Applications Custom AI agents, conversational AI systems, RAG applications, LLM integrations, document intelligence, and business process automation. ⚡ Workflow Automation n8n, Make.com, Zapier, CRM automation, sales workflows, operational automation, lead management, customer support automation, and system integrations. 📱 Mobile App Development Flutter, Android, iOS, React Native, Firebase-powered applications, MVP development, and enterprise mobile solutions. 💻 Web & SaaS Development React, Next.js, Node.js, Python, Java, Spring Boot, custom SaaS platforms, admin dashboards, multi-tenant systems, and enterprise applications. 🔌 API & System Integrations CRM, ERP, payment gateways, third-party APIs, cloud services, communication platforms, and business system integrations. ☁️ Cloud & DevOps AWS, Google Cloud, Docker, Kubernetes, CI/CD, deployment automation, and scalable cloud infrastructure. Our team focuses on building practical solutions that improve operations, automate workflows, reduce manual effort, and help businesses scale efficiently. Whether you need an AI-powered product, SaaS platform, mobile application, automation workflow, or enterprise software solution, we can help transform your idea into a production-ready system. less
