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We're looking for developers interested in working on long-term software projects. The goal is to build a robust, scalable cloud-based management platform with multiple modules, integrations, and features for different types of businesses and organizations. We're open to all experience levels, including beginners who have a good understanding of programming logic and are willing to learn. Experience with React, [login to view URL], Node.js, .NET, Java, PostgreSQL, APIs, or cloud technologies is a plus. We're looking for people who are responsible, communicate well, enjoy solving problems, and want to be part of a team for future projects. This is a long-term collaboration opportunity. Projects, budgets, deadlines, and payment terms will be discussed individually as opportunities become available. If you're interested, send a short introduction, your technical skills, previous projects (if any), availability, and expected rates. Individual developers and small teams are welcome.
Project ID: 40743896
377 proposals
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377 freelancers are bidding on average $475 USD for this job

Hello, I am Dr. Rajesh Rolen, PhD in Computer Science & Engineering, with experience of over 20+ years in AngularJS, API Development, Software Development, JavaScript, NoSQL Couch & Mongo, Full Stack Development, Node.js, Docker As a preferred freelancer in the top 1%, I have done 400+ projects here on freelancer.com, I have 4.9 ratings out of 5 on average, which showcases my quality of work and timely delivery. Key Highlights: - Free Hosting Support on the Cloud or any desired platform. - Free 3 months of post-delivery support to ensure that our client doesn’t face any challenges after the launch of the project. - Free Dedicated tester on projects to ensure quality delivery, so clients don’t need to act as a tester. - 10+ Years experience UI/UX team to ensure intuitive UI. Portfolio: https://www.freelancer.com/u/Microlent Please open the chat and send me a message, so we can have a more detailed discussion about the project to give you the project timeline and cost. Thank you for considering my services. I look forward to engaging in a productive conversation and understanding how I can be of assistance in bringing your project to life. Regards Rajesh Rolen
$500 USD in 10 days
8.5
8.5

With a solid background in React and Node.js, I'm well-equipped to contribute to your cloud-based management platform project. I understand the importance of scalability and seamless integrations for diverse businesses. Could you share more details about the specific modules or features you prioritize for the initial development phase? Regards, Yogesh Kumar
$270 USD in 6 days
7.8
7.8

We will develop a scalable SaaS platform with multiple modules, utilizing Node.js, MongoDB, and AngularJS for a seamless experience. Our team will focus on API development, cloud integration, and user management to meet your long-term needs. We will leverage our experience from projects like 'Car Service Appointment Booking System with Real-Time Notifications, Chat, Booking Tracking & Meta WhatsApp API'. The project will be delivered in 14 days, with the first 40% milestone covering core API setup and initial module architecture.
$250 USD in 14 days
7.2
7.2

Hi, I understand you want to build a reliable cloud-based SaaS platform with several business modules, integrations, and room to grow. I can contribute to the Software Development work using Java and JavaScript, with Node.js for backend services, APIs, business logic, and scalable platform features. I can also work with databases, third-party integrations, testing, debugging, and clear team communication as the project develops. I am interested in a long-term collaboration and can adapt to your development process, existing codebase, and assigned modules. Before starting, I would like to understand the first module, expected responsibilities, and the technical direction so the work is planned properly. What is the first module to be built, and has the team already chosen the frontend, backend architecture, database, and cloud provider? Please share the first project scope, current technology decisions, and expected weekly availability. I would be glad to discuss how I can support the team.
$750 USD in 15 days
7.1
7.1

Hello, Your SaaS opportunity clearly points to the real challenge: building a dependable platform that can grow across business types without turning every new module or integration into a maintenance problem. I can contribute to structured Software Development across JavaScript applications, reusable Plugin architecture, and SQL-backed systems, while collaborating closely with your team on APIs, modular features, and scalable workflows. I focus on clear communication, maintainable implementation, and solving the underlying product needs rather than only completing isolated tickets. I’m comfortable adapting to an evolving roadmap and documenting decisions so future developers can extend the platform confidently. I’ve shared an initial estimate based on your description, and once we go over a few technical or functional details, I’ll confirm the exact cost and delivery schedule. We can begin with a focused discussion of your current architecture, roadmap, availability expectations, and the first module to prioritize. Which module or integration is currently the highest priority, and what technology stack has already been selected for the SaaS foundation? Best regards, Asad Which module or integration is currently the highest priority, and what technology stack has already been selected for the SaaS foundation? How do you plan to structure tenant isolation, permissions, and reporting across different business types? What collaboration process will you use for task assignment, c
$250 USD in 10 days
7.1
7.1

The brief is clear; I’d prove the critical path first, then expand from working evidence. You're building Long-Term Software Developers Needed SaaS Platform, where the real delivery risk is usually in the workflow details, not just the feature list. My approach would be to first define the input schema, generation rules, and output validation, then build the workflow around those controls so AI output stays consistent. Quick question: Which external integrations are absolutely required for MVP, and which can be staged after launch? Also, what is already available for Long-Term Software Developers Needed SaaS Platform: a working codebase, designs, data, or only the brief? Best, Dr. Syafiq
$500 USD in 21 days
7.0
7.0

Hi there, I noticed that you're building a robust, scalable cloud-based management platform with multiple modules and integrations. My experience with cloud technologies and back-end development using Node.js aligns well with your needs. I can effectively contribute to API development and module integration, ensuring the platform is responsive and efficient for various types of businesses. I am eager to collaborate in a long-term capacity and enjoy problem-solving in team environments. I can start immediately and would love to discuss your expectations regarding availability and project specifics as we move forward. Regards, Ali
$450 USD in 10 days
6.5
6.5

Your platform will face data consistency issues if you're using both MongoDB and CouchDB without a clear sync strategy between modules. Multi-database architectures introduce race conditions that break user sessions during failover. Quick questions - are you planning active-active replication across regions, or will this be single-region with read replicas? And what's your target concurrent user load at launch versus 12 months out? Here is the architectural approach: - NODE.JS + DOCKER: Build containerized microservices with health checks and auto-scaling groups to handle traffic spikes without downtime. - NOSQL COUCH & MONGO: Design a unified data access layer that abstracts database differences and prevents schema drift across modules. - API DEVELOPMENT: Implement rate limiting and JWT-based authentication to secure endpoints before integrating third-party services. I've built similar multi-tenant SaaS platforms for 3 clients that scaled from 500 to 40K users without re-architecting. Let's schedule a technical call to map out your module dependencies before you commit to a stack.
$450 USD in 10 days
7.4
7.4

Hi, I'm Denis, a full-stack developer with experience building scalable cloud-based systems using Node.js, React, and PostgreSQL. I've worked on multi-module platforms managing integrations, data consistency, and user permissions across different business workflows. I understand you need a robust management platform for different organization types. This requires flexible architecture that stays maintainable as it grows, with careful API design and clear data flow between services. I've built similar systems with role-based access, reliable cross-module data syncing, and third-party integrations. I'm comfortable with your tech stack and adapt to what works best for the project. My approach: 1. Review requirements to understand core modules and relationships 2. Plan architecture around scalability and maintainability upfront 3. Build core backend services first, then frontend modules, then integrations 4. Test and deploy incrementally to catch issues early I prioritize getting API contracts and database schemas right early—this prevents significant refactoring later. I also build in monitoring and logging from the start to catch production issues quickly. For long-term projects, I manage scope through tight communication, clear work phases, and regular check-ins on priorities. I'm available for immediate long-term collaboration. Let's discuss specifics, timelines, and rates once we align on scope. Thanks, Denis.
$250 USD in 5 days
6.2
6.2

Hi, I would love to help you build your cloud based management platform using Node.js for the backend and modern JavaScript for the modules, along with MongoDB or PostgreSQL for your data needs depending on the feature. I am ready to set up Docker containers early on so the team can push updates without breaking the local testing environments. A smart step for a multi module platform like yours is to build a shared component library from day one so different types of businesses can reuse the same core forms and tables without rewriting code. Since you mentioned long term development, we can break the platform down into small functional pieces so every integration and module gets built and tested one by one. I can share working code samples from my past projects so you can see how I structure APIs and databases before we discuss rates or any project milestones. Which module of the management platform do you want to start building first? Best, Salma Noreen
$870 USD in 17 days
6.3
6.3

Hey, the long-term SaaS platform with multiple modules and integrations sounds like a good fit for a developer who can grow with the project rather than just deliver one feature. I can work across the frontend, backend, APIs, and cloud side while keeping each module clean and maintainable as the platform expands. I’m used to breaking larger systems into practical milestones and communicating clearly as requirements evolve. What module or feature are you planning to build first?
$600 USD in 15 days
6.0
6.0

Hi there, We are a small team of SaaS developers with the skill set you mentioned, except for Java. We charge from US$16-20/hr. Looking forward to hearing from you !! Best, Raman
$500 USD in 7 days
5.9
5.9

Hi, I’m interested in joining your long-term development team. My strongest area is Python, with hands-on experience in automation, API integration, network-related automation, data processing, and troubleshooting. I’m comfortable working with existing codebases, understanding requirements, building scripts and integrations, and solving technical problems step by step. I also have practical experience working with WordPress, Shopify, web technologies, databases, and cloud-related workflows. I’m continuously expanding my skills into modern web development and can learn and adapt to technologies such as React, Node.js, PostgreSQL, and other tools required by the project. I’m responsible, communicate clearly, and would be interested in building a long-term working relationship rather than taking on only a single task. I’d be happy to discuss the upcoming projects, expected availability, and working arrangement. Best regards,
$400 USD in 7 days
5.5
5.5

Hello, I hope you're doing well. I'm a full-stack developer comfortable with JavaScript, Node.js, Angular, REST APIs, Docker, and cloud-based applications. I enjoy working on maintainable SaaS systems where modules share authentication, permissions, and PostgreSQL or MongoDB data. I’d start by understanding the platform structure, then build a small module with clear API boundaries and containerized deployment. Good communication matters to me, especially in long-term work. Could we have a short conversation about the first module, preferred stack, and how your team handles code reviews? I’m available for ongoing collaboration, with rates discussed per project. Thank you, Jasjot
$350 USD in 4 days
5.9
5.9

We’re a professional development organization interested in building a long-term partnership with your team. We currently work with several long-term clients on a monthly engagement basis, providing dedicated development resources and ongoing technical support. Our team has 17+ years of experience across WordPress, WooCommerce, Shopify, OpenCart, Magento, Joomla, CodeIgniter, REST APIs, payment gateways, custom plugins, SaaS and cloud-based applications. We can also provide developers with different skill sets based on your project requirements. We’re comfortable working as an extension of your team, following your processes, communicating regularly, and supporting projects over the long term. We’d be happy to discuss your technology stack, expected workload, working hours and the type of developers you need. We’re looking forward to building a reliable long-term collaboration.
$500 USD in 10 days
5.6
5.6

Hi, I understand you're looking to develop a robust, scalable cloud-based management platform with multiple modules and integrations. This project involves creating a versatile SaaS solution that can cater to various business needs, a task that requires careful planning and execution to ensure seamless integration and scalability. One of the main challenges will be designing a modular architecture that allows for easy integration of new features and modules over time. My approach would begin with a thorough assessment of your current infrastructure and requirements, prioritizing stability and future scalability to ensure the platform can grow with your needs. With extensive experience in Full Stack Development, particularly with JavaScript and Node.js, I have successfully built similar scalable solutions. My past work with cloud-based platforms and modular architectures will be directly applicable here. Q1 – Could you provide more details on the specific modules and integrations you envision for the platform? Q2 – Are there any existing systems or APIs that the platform needs to integrate with? Q3 – What is the expected timeline for the initial phase of development? Looking forward to hearing from you.
$250 USD in 7 days
5.6
5.6

Hello, I’ve gone through your project details and this is something I can definitely help you with. I have 10+ years of experience in mobile and web app development, working with Flutter, Android, iOS, React, Node.js, and APIs. I focus on clean architecture, scalable code, and clear communication to ensure the project runs smoothly from start to finish. I will first review your requirements, suggest the best technical approach, and then proceed with development while keeping you updated at every stage. Here is my portfolio: https://www.freelancer.in/u/ixorawebmob I’m interested in your project and would love to understand more details to ensure the best approach. Could you clarify: 1. Do you need this for mobile, web, or both? 2. Do you already have UI/UX designs or should we create them? 3. Will there be any third-party API or payment gateway integration? 4. What is your expected timeline for completion? 5. Are there any reference apps or websites you like? Let’s discuss over chat! Regards, Arpit Jaiswal
$250 USD in 25 days
5.4
5.4

Dear Client, I read "Long-Term Software Developers Needed SaaS Platform" carefully and understand you are looking for a full-stack developer who can handle both application development and AI integration. I have experience with JavaScript, NoSQL Couch & Mongo, Node.js, AngularJS, Full Stack Development, API Development and can work across the complete stack — frontend, backend, APIs, databases, authentication, third-party integrations and AI features. I can build scalable applications using modern technologies while keeping the codebase maintainable and production-ready. A few quick questions: Which AI models/APIs are you currently planning to use? Is there an existing application/codebase, or will the project be built from scratch? Thanks & Regards, Deepak
$488 USD in 14 days
4.9
4.9

Hello, I understand you are looking for reliable developers for an ongoing SaaS platform rather than someone for only one isolated task. The main goal is to gradually build a robust, scalable cloud management system with multiple modules, integrations and business workflows while maintaining clean and dependable development. I can contribute across full-stack development, JavaScript, Node.js, API development, databases, cloud environments and Docker, with a focus on practical architecture and maintainable code. I’m comfortable understanding existing systems, solving technical issues, developing new modules and adapting to changing requirements as the platform grows. For a long-term collaboration, I value clear communication, consistent progress and taking ownership of assigned tasks. I can also work with an existing team or independently depending on the project structure. I’d be happy to discuss the current platform, development workflow and upcoming modules. Looking forward to working with you. Thanks
$300 USD in 5 days
4.7
4.7

Hi! We’ve carefully reviewed your project requirements and understand what you’re looking to achieve. Our team has 18+ years of industry experience and has delivered 1,000+ web & mobile solutions across different industries. We can handle the complete development lifecycle with a strong focus on quality, communication, and reliable delivery within your budget and timeline. We’re available to start immediately. Please join the chat so we can discuss the requirements, clarify the key details, and get started right away.
$500 USD in 7 days
5.1
5.1

Manacapuru, Brazil
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