Full Stack Developer for SaaS Application

@OutsourceMan

⭐⭐⭐⭐⭐ Dear Valuable Client, CnELIndia, led by Raman Ladhani, is fully equipped to deliver your SaaS integration project with Salla. We bring extensive experience in full-stack development using Node.js + Express and PHP + Laravel, along with robust RESTful API design and database management (MySQL/PostgreSQL). Our team excels at implementing OAuth2 flows, Webhooks, and real-time synchronization with external systems like CRMs, payment gateways, and marketing tools. On the frontend, we craft intuitive Admin UIs using React, Vue, or modern JavaScript frameworks, ensuring a smooth merchant-facing experience with clear workflows, conditional rules, and reporting dashboards. By combining technical execution with practical design thinking, we ensure clean, scalable code and optimized performance, enabling seamless integration and a professional, user-friendly platform tailored to your requirements. We are ready to start immediately and guide the project from architecture to deployment efficiently.

@n2rtechnologies

Hello, I’m excited about the opportunity to develop your SaaS application. With extensive experience in building robust and scalable solutions, I can deliver a user-friendly interface and seamless backend functionality tailored to your specific needs. I understand the importance of a solid architecture that supports growth and flexibility, ensuring your application can adapt as your business evolves. I will focus on creating a comprehensive CRM system that not only meets your current requirements but also enhances user engagement and efficiency. My approach includes thorough testing and optimization to guarantee a smooth deployment. I’m committed to clear communication throughout the project, ensuring that your vision is realized effectively. Looking forward to discussing how I can bring your project to life. Regards, Nurul Hasan

@a4logic

Hello, Building a SaaS product that is seamlessly integrated with other software platforms, including Salla and Zid, has been one of our core specialties as a company. Building on Node.js and Express or PHP and Laravel, we have a robust backend solution that ensures clean, scalable, and maintainable code. With extensive experience in not only designing RESTful APIs but also managing databases like MySQL and PostgreSQL, my team and I are fully equipped to carry out the task at hand for your amazing product. One of our standout skills is our ability to optimize performance and handle errors. This is key given that the application will need to handle processes such as order completion, customer creation etc. in real-time and carry out background jobs efficiently. Moreover, as UI/UX design has always been a crucial aspect of every project we undertake, we've developed expertise in all critical front-end technologies like HTML5,CSS3, JavaScript including modern frameworks such as React/Vue ensuring that we translate your requirements into a clear and smooth UX design. Lastly, in line with the theme of this project we have ample experience on OAuth2, Access & Refresh Tokens using Webhooks which will be essential for integrating external systems like CRM's payment gateways etc with the application you intend to build. Over the years we've developed an instinct of thinking and executing simultaneously when it comes to complex projects like Thanks!

@LiveExperts

Hello, As a specialized Full Stack Developer and a member of the esteemed Live Experts® LLC team, I possess not only the necessary technical skills but also an intrinsic understanding of SaaS applications that makes me the ideal candidate for this role. I am adept at seamlessly integrating multiple platforms and APIs, a skillset that utilizes my extensive experience with Node.js + Express and PHP + Laravel - as specified in the project description. Not to mention, my expertise also encompasses designing intuitive Admin UIs which emphasizes smooth user experience and practicality - crucial aspects we would be focusing on. Moreover, my skills in Javascript (ES6+), HTML5, CSS3, alongside proficiency with modern frameworks like React and Vue can assure you that I will create an internal Admin Panel that is professional, trivial-free with dilated interfaces. My experience in handling OAuth2 and webhooks makes me fully capable of managing real-time synchronizations which include tasks like process background jobs. Lastly, being a global platform connecting professionals in statistical analysis, software engineering and Computer Science (especially big data analysis), we have access to a wide range of engineering resources. Our innovative approach to problem-solving paired with our commitment to providing solutions ensures that we can readily adapt to your project's needs. Let's grab this opportunity to collaborate on building a cutting-e Thanks!

@mohsinhassan63

Hi there, Are you looking for a seamless integration with Salla that also puts user experience first? I’d love to help you build a fully integrated SaaS application. With over 7 years of experience in building robust backends using Node.js and PHP, I have successfully developed scalable applications that connect to various APIs, including OAuth and webhooks. I’ve managed MySQL and PostgreSQL databases while focusing on performance optimization and clean code. On the UI/UX side, I excel in creating engaging admin interfaces with HTML5, CSS3, and modern JS frameworks like React and Vue. My goal is to provide a practical user experience that reduces complexity while ensuring functionality. Let’s discuss how I can contribute to your project and deliver the features you need effectively. Best Regards, Mohsin H

@SBITServices

Hi, I have extensive experience in building SaaS applications and integrating them with technical platforms like Salla. I will manage backend architecture, implement technical integrations, design the Admin UI, and ensure a professional user experience. I specialize in backend development using Node.js/Express or PHP/Laravel, RESTful API implementation, and UI/UX development with HTML5, CSS3, and JavaScript frameworks. Let's discuss further. Regards, Sai Bhaskar

@ZohaibRoy

⭐⭐⭐⭐⭐ Build and Integrate SaaS Applications with a Full-Stack Developer ❇️ Hi My Friend, I hope you are doing well. I've reviewed your project requirements and see you are looking for a Full-Stack Developer for building SaaS applications. You don't need to look any further; Zohaib is here to help you! My team has successfully completed 50+ similar projects for SaaS applications. I will create a fully integrated application connected to Salla-Zid and manage backend architecture efficiently. ➡️ Why Me? I can easily handle your project as I have 5 years of experience in full-stack development, focusing on Node.js, Express, and PHP with Laravel. My expertise includes API integration, database management, and UI/UX design. Additionally, I have a strong grip on technologies like MySQL, PostgreSQL, and modern JavaScript frameworks. ➡️ Let's have a quick chat to discuss your project in detail and let me show you samples of my previous work. I'm looking forward to discussing this with you! ➡️ Skills & Experience: ✅ Full-Stack Development ✅ API Integration ✅ Database Management ✅ Node.js ✅ Express ✅ PHP ✅ Laravel ✅ MySQL ✅ PostgreSQL ✅ HTML5 ✅ CSS3 ✅ JavaScript (ES6+) ✅ React ✅ Vue Waiting for your response! Best Regards, Zohaib

@asifalimzd

Hi there, I am a full-stack developer with strong experience building SaaS applications and platform integrations, and I can develop this Salla–Zid integrated application for you. I will build the system using Node.js + Express or Laravel + MySQL/PostgreSQL, design and implement secure REST APIs, handle OAuth2 authentication, access/refresh tokens, and webhook processing, and ensure real-time synchronization with Salla APIs and external systems like CRM and payment gateways. I will also develop a clean, professional Admin UI using React/Vue or modern frontend technologies, focusing on practical UX for merchants to manage CRM rules, discounts, and reporting with simplicity and performance. I am ready to start immediately. Please message me so we can discuss the detailed requirements and project timeline. Thanks

@DeveloperStation

Hi there, We’ve built multiple fully integrated SaaS products that connect with external platforms like Shopify and WooCommerce, handling OAuth, webhooks, and more. We also have extensive experience with admin dashboards, user management, and UI/UX design, ensuring we deliver a product that’s not just functional but also user-friendly. As a team of dedicated developers, we can assign specialists for specific tasks, such as backend work or UI development, to ensure you get the best expertise at every stage. We’re also flexible and can adapt to your changing needs, whether you want to switch from Laravel to Node.js or explore new ideas. Let’s schedule a 10-minute call to discuss your project in more detail and see if I’m the right fit for your needs. I’m eager to learn more about your exciting project. Best, Adil

@CANWS

Hi — This is exactly the kind of SaaS + API integration project I specialize in. I’ve built full-stack SaaS platforms using Node.js, Express, React, and PostgreSQL, including OAuth installations, webhook processing, background jobs, and scalable admin dashboards for merchants. For your app, I’d implement a clean modular architecture, secure Salla/Zid integrations, a lightweight frontend widget for stores, and a polished Admin UI to manage voice reviews and notification bars smoothly. I can start immediately and deliver this efficiently. ✅Quick question: Should the voice review system store audio on cloud storage (like S3) or your own server infrastructure?

@kanika6665

Hey there, As a Full-Stack Developer and Digital Solutions Expert with extensive experience in building SaaS applications, I am excited about the opportunity to work on developing your integrated application connected to Salla-Zid. With expertise in Node.js, Express, PHP, Laravel, RESTful APIs, and database management, I am well-equipped to handle backend development, technical integrations, and UI/UX design, ensuring a seamless user experience. My approach involves clean, scalable code, optimized performance, and error handling, along with integrating with Salla APIs, external systems, OAuth2, webhooks, and real-time synchronization. I excel at designing internal Admin Panels, crafting merchant-facing interfaces, and focusing on user experience to simplify workflows and enhance usability. With a focus on reducing complexity and providing clear options, I deliver professional, user-centric interfaces. For the next steps, I propose starting with a detailed project scope discussion to align on expectations and timelines. What are your thoughts on this initial approach?How would you like to proceed with discussing the project scope and timeline?

@webtechso

Hello Sir/Ma’am, I can build your SaaS application with deep Salla/Zid integration, clean backend architecture, and a professional Admin UI. I’m experienced in OAuth flows, webhooks, and scalable SaaS design. Proposed stack:- - Backend: Laravel (preferred) or Node.js + Express - Database: PostgreSQL/MySQL - Frontend: React (modern Admin UI) - Queues: Redis for background jobs - Deployment: Docker-ready I will deliver:- - Fully integrated app with Salla & Zid - Secure OAuth2 flow (access/refresh tokens) - Webhook processing and real-time sync - Clean REST API architecture - Merchant-friendly Admin Panel - CRM rules and conditional discount UI - Reports dashboard - Scalable, maintainable codebase I have strong experience with API-heavy SaaS platforms and merchant dashboards. Ready to review detailed feature specs and begin. Best regards, Pulkit J.

@bestsolz1

Hi, I’m a full-stack developer with strong SaaS experience and solid background in building API-driven platforms with complex integrations. I can build your Salla–Zid integrated application from architecture to Admin UI with clean, scalable structure. On the backend, I work with Node.js + Express and Laravel, designing RESTful APIs, managing MySQL/PostgreSQL databases, implementing business logic, background jobs, performance optimization, and structured error handling. For integrations, I have hands-on experience with: - OAuth2 authorization flows (access & refresh token lifecycle) - Webhooks handling (orders, customers, events) - Real-time synchronization - Third-party API integrations (CRM, payments, marketing tools) On the frontend, I can build a professional Admin Panel using React with a strong focus on UX clean dashboards, CRM rule configuration, conditional discounts, reporting interfaces, and merchant-friendly workflows that reduce complexity. I think both technically and product-wise, so I don’t just implement features I structure them for long-term scalability. I’m ready to discuss the two main features and define a clear execution roadmap.

@elishadiah326

Hi, Thank you for posting this good task! I understand you need a strong full-stack engineer to build a SaaS application fully integrated with Salla (and Zid), including backend architecture, API integrations (OAuth, webhooks), real-time sync, background jobs, and a clean Admin UI with solid UX. This is not just coding - it requires architectural thinking and product-level execution. As a skilled full stack developer, I have strong experience building SaaS platforms using Node.js + Express and Laravel, designing scalable REST APIs, and managing MySQL/PostgreSQL databases. I’ve implemented OAuth2 flows, access/refresh token handling, webhook listeners, and background job queues for real-time system synchronization. My approach would start with defining a clean modular architecture: API layer, service layer (business logic), integration layer (Salla + external systems), and queue workers for async processing. Webhooks would be validated, logged, and processed through background jobs to ensure reliability and prevent race conditions. For the Admin UI, I recommend React for a structured, scalable interface with reusable components and clear state management. A few questions: 1. Are Salla and Zid APIs already approved for your app? 2. Will this be multi-tenant from day one? I’m confident I can deliver both technically and product-wise. Best regards, Diah

@khurshid040462

Hello, I’m excited about your need for a Full-Stack Developer to build a fully integrated SaaS application connected to Salla-Zid. With over 5 years of experience in developing complex SaaS platforms using Node.js and PHP, I am well-equipped to handle your backend architecture and API integrations. My approach will involve creating RESTful APIs and seamlessly integrating with Salla APIs, ensuring a smooth OAuth2 flow and real-time data synchronization. Additionally, I can design a responsive Admin User Interface using modern frameworks like React, enhancing user experience by simplifying navigation and configuration. I recently developed a SaaS application with similar features, focusing on optimizing performance and user interaction. I estimate that a project like this can be completed within 4-6 weeks. What specific features do you envision for the Admin Panel to enhance usability? Regards, Khurshid Ahmed

@marjanahmed13

Hi! My name is Marjan and I'm here to offer you my services as a skilled applicant with over a decade of experience working on Freelancer.com. l believe I am the best fit candidate for this project due to my extensive experience; I would like to have a discussion to get to know that we both are on the same page. Once the scope will be locked, I will start working on it right away.

@ytpaussie

Hi, this is a well structured SaaS concept and fully achievable with the right architecture. I would build a unified application using Node.js with Express or Laravel, implementing secure OAuth2 integration with Salla and Zid, webhook handling, token management, and background jobs for real time sync. The Voice Review system would include controlled audio uploads, product level assignment, and a lightweight embedded widget. The Notification Bar system would support multiple bars, advanced customization, placement control, and priority logic. The Admin UI would be built with React or Vue, focused on clarity and merchant usability, delivered with clean, scalable, documented code ready for production.

@arbu1499

Hi! I’m an experienced full-stack developer with strong SaaS and API integration expertise, including OAuth flows, webhooks, and real-time synchronization. I can build your application with Node.js/Express or Laravel, design clean RESTful APIs, manage the database, and deliver a polished Admin UI with React/Vue or vanilla JS/CSS. I’ll ensure seamless integration with Salla and other external systems, while keeping the UX smooth, intuitive, and professional for merchants. Looking forward for your positive response in the chatbox. Best Regards, Arbaz T

@toriquldev123

Hello Dear! I write to introduce myself. I'm Engineer Toriqul Islam. I was born and grew up in Bangladesh. I speak and write in English like native people. I am a B.S.C. Engineer of Computer Science & Engineering. I completed my graduation from Rajshahi University of Engineering & Technology ( RUET). I love to work on Web Design & Development project. Web Design & development: I am a full-stack web developer with more than 10 years of experience. My design Approach is Always Modern and simple, which attracts people towards it. I have built websites for a wide variety of industries. I have worked with a lot of companies and built astonishing websites. All Clients have good reviews about me. Client Satisfaction is my first Priority. Technologies We Use: Custom Websites Development Using ======>Full Stack Development. 1. HTML5 2. CSS3 3. Bootstrap4 4. jQuery 5. JavaScript 6. Angular JS 7. React JS 8. Node JS 9. WordPress 10. PHP 11. Ruby on Rails 12. MYSQL 13. Laravel 14. .Net 15. CodeIgniter 16. React Native 17. SQL / MySQL 18. Mobile app development 19. Python 20. MongoDB What you'll get? • Fully Responsive Website on All Devices • Reusable Components • Quick response • Clean, tested and documented code • Completely met deadlines and requirements • Clear communication You are cordially welcome to discuss your project. Thank You! Best Regards, Toriqul Islam