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Junior Full-Stack Web Developer with backend focus. Primary responsibility Build and maintain the backend that connects the existing React frontend to the database, payment system, and business logic. Core technical skills Backend Node.js [login to view URL] REST API development Database MongoDB CRUD operations schema design Frontend understanding React basics REST API integration JSON / HTTP requests Authentication JWT authentication session management password hashing (bcrypt) Payments Stripe API basics Stripe payment links Stripe webhooks Role management RBAC implementation role permissions (Super Admin / Client Admin / Guest) Basic SaaS knowledge multi-tenant applications subscription plans API security Dev tools Git GitHub / GitLab npm environment variables Postman / API testing Nice-to-have skills (not mandatory) Docker basic DevOps cloud deployment (AWS / Render / Vercel) email APIs (SendGrid / Resend) SMS APIs (Twilio) cron jobs / background workers Typical experience level 1–3 years experience in: Node.js MongoDB REST APIs
Projektin tunnus (ID): 40300185
262 ehdotukset
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Aktiivinen 28 päivää sitten
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Hi, As per my understanding: You need a junior full-stack developer with a strong backend focus to build and maintain the server side of your application. The backend will connect an existing React frontend with the database, payment system, and core business logic. The role includes developing REST APIs with Node.js and Express, managing MongoDB schemas and CRUD operations, implementing JWT authentication, RBAC roles (Super Admin, Client Admin, Guest), and integrating Stripe for subscription or payment handling within a SaaS-style multi-tenant architecture. Implementation approach: I would structure the backend using Node.js with Express to build secure and scalable REST APIs. MongoDB schemas will be designed for efficient CRUD operations and multi-tenant data separation. Authentication will be implemented with JWT, bcrypt password hashing, and proper session handling. I will integrate Stripe for payment links and webhook-based event handling for subscription or payment updates. API security, role-based access control, and environment configuration will be managed using best practices. All endpoints will be tested using Postman and maintained through Git-based version control. A few quick questions: Is the React frontend already connected to any backend or starting fresh? Will the SaaS platform require subscription billing or one-time payments? Are there existing MongoDB schemas or should they be designed from scratch?
$250 CAD 7 päivässä
5,5
5,5
262 freelancerit tarjoavat keskimäärin $480 CAD tätä projektia

Hi there, I’m Muhammad Awais, and I’m excited about building the backend that smoothly connects your React frontend to the database, payment system, and business logic. I understand you want a solid, scalable Node.js/Express backend with clean REST APIs, solid MongoDB schemas, JWT auth, and Stripe integration for payments and webhooks, plus RBAC for Super Admin / Client Admin / Guest. My approach is simple: set up a robust API layer with clear endpoints, design flexible MongoDB schemas, implement secure authentication and session management, integrate Stripe for payments and subscription handling, and add hooks for multi-tenant support and basic SaaS needs. I’ll emphasize clean code, thorough API testing, and clear documentation so your frontend can consume everything reliably and securely. What is the expected traffic scale and the number of tenants (accounts) you plan to support in the first release? Key plan: - API design and endpoint scaffolding with thorough input validation - MongoDB schema design with indexing and relationships for fast queries - JWT-based auth, bcrypt hashing, and role-based access control - Stripe setup for payment links, webhooks, and basic subscription logic - CI basics with GitHub/GitLab workflows and environment variable handling - Basic deployment readiness (Docker optional, cloud host readiness) and API testing with Postman What I’ll deliver: a maintainable backend connected to React frontend, secure auth, payments, and multi-tenant awarenes
$750 CAD 14 päivässä
8,8
8,8

Hello, I understand you need a junior full-stack developer with strong backend focus to build and maintain APIs, connect your React frontend, handle authentication, payments, and role-based SaaS logic. I will develop secure, scalable Node.js/Express APIs with MongoDB, implement JWT auth, Stripe integration, and clean RBAC structure with proper testing and documentation. I have 10+ years of experience guiding and delivering backend systems with best practices in security and performance. Let’s chat so we can align on architecture and get development started. thank you Best Regards Gaurav Garg
$500 CAD 7 päivässä
8,5
8,5

Hi, With over 3 years of experience as a full-stack developer, I bring a wealth of knowledge to the table specifically with Node.js, MongoDB, and RESTful APIs. During my career, I've built and maintained several backend systems that were designed for scalability, performance, and security- all of which are requirements I see in your project description. One particular area of expertise I possess that would be beneficial to your project is my deep understanding of payment systems such as Stripe API; from payment links to webhooks, I've implemented them all. Additionally, my experience with RBAC implementation will be invaluable in creating a smooth role management system. Moreover, my nice-to-have skills include Docker and basic DevOps proficiency which can aid in cloud deployment- should you need it. My commitment doesn't end post-project delivery but continues through round-the-clock support to ensure your maximum satisfaction. So let's make your backend as robust, efficient and user-friendly as possible! Thanks!
$250 CAD 10 päivässä
8,2
8,2

Hi, This is Elias from Miami. I understand that you are looking for a junior full-stack developer with a backend emphasis to build and maintain your web application. The goal is to create a robust and efficient system that meets your business needs while ensuring scalability and ease of maintenance. To achieve this, I would leverage my expertise in PHP and Node.js for backend development, ensuring seamless integration with the front end using AngularJS. I would implement RESTful APIs to facilitate communication between components and utilize MongoDB for optimal data storage. Version control with GitHub will ensure a smooth collaborative process. With over 10 years of experience in web development, I have a strong track record of building scalable and maintainable systems. My background includes developing applications that prioritize performance and security, making me well-suited to deliver the quality you expect. Q1: What specific features or functionalities are you looking to prioritize in the initial phase of development? Q2: Are there any existing systems or technologies that the new application needs to integrate with? Q3: What is your timeline for project milestones and final delivery? Regards.
$500 CAD 10 päivässä
7,8
7,8

Woah Hello, I see you're looking for a Junior Full-Stack Developer with a focus on backend work. You need someone to connect your existing React frontend to various back-end components like the database, payment system, and business logic. With 7+ years of experience in Node.js and MongoDB, I can effectively build and maintain the backend services you need. My background includes developing REST APIs and handling CRUD operations, which will ensure smooth data flow between your frontend and backend. I’m also familiar with JWT authentication and session management to keep user data secure. Additionally, I have a good understanding of Stripe API for payment processes and can manage role-based access control effectively. I’m excited about the opportunity to contribute to your project. Best regards, Ivan Mandinski
$500 CAD 7 päivässä
7,4
7,4

Greetings, I am a full-stack developer with 8+ years of experience building Node.js and MongoDB backends, connecting frontends via REST APIs, and integrating payment and authentication systems. I have worked on SaaS-style applications with multi-tenant architecture and role-based access control. I understand you need a backend developer to connect your existing React frontend to the database, handle business logic, implement JWT authentication, manage Stripe payments, and maintain secure CRUD operations with RBAC. I can build and maintain a robust, scalable backend, ensure seamless API integration, and handle subscription workflows, session management, and secure password handling. My approach emphasizes clean code, secure architecture, thorough API testing, and maintainable deployment-ready solutions. I’m fully available for remote work and collaborative development. Let’s discuss your project. Best regards, Hammad
$500 CAD 10 päivässä
7,5
7,5

Hello there, As a versatile Full-Stack Developer and Software Engineer, my proficiencies with Node.js and PHP would be highly beneficial for your project. My 1-3 years of experience directly align with your requirements for a Junior Full-Stack Web Developer, Backend emphasis. Furthermore, I am specialized in delivering reliable and scalable solutions with a strong focus on backend architecture and modern UI/UX , precisely what you are seeking. In addition to my expertise in Node.js and PHP, I also bring to the table broad knowledge across various frameworks such as React.js, MERN Stack, Laravel, Django, Flask, WordPress, which would aid my understanding of your existing React frontend. This understanding coupled with my proficiency in REST API development, database operations (CRUD & schema design), JWT authentication for user session management, as well as my knowledge of Stripe API payment system's basics place me on steady ground to effectively build and maintain the backend for your project. What sets me apart from the competition is not only my adaptability to modern technologies or building single applications but also the broader skillsets I've acquired along side such as data-processing & analysis. This could be valuable for your business logic methods ensuring you turn your Paydata into insights - should this be an area of focus for you. With all these capabilities combined with an unwavering dedication to clean code and scala Best regards, Alex.
$555 CAD 1 päivässä
7,0
7,0

Hi, I’m a full-stack developer with strong Node.js, Express, and MongoDB experience, and I can help build and maintain the backend that connects your React frontend with the database, Stripe payments, and core business logic. I’ve worked with REST APIs, JWT authentication, RBAC role systems, and secure API integrations, ensuring scalable and clean backend architecture. I’m comfortable with Git workflows, API testing with Postman, and integrating Stripe webhooks and subscriptions for SaaS platforms. I can jump in quickly, understand your current codebase, and start delivering stable backend features. Looking forward to contributing to your project.
$500 CAD 7 päivässä
7,0
7,0

Hello, hope you are doing well. Me and my team are very expert in your required technology. We can deliver quality development support for your project. Let’s discuss. Thanks
$500 CAD 7 päivässä
6,9
6,9

Hello, I see you’re looking for a Junior Full-Stack Developer with a strong backend emphasis. With over two years of experience in Node.js and MongoDB, I have successfully built REST APIs and integrated them seamlessly into React frontends. My expertise includes organizing CRUD operations and authentication utilizing JWT, ensuring data security. To achieve your project goals, I propose to design a robust backend architecture that ensures smooth interaction between your existing React frontend and the database, alongside implementing Stripe for payment processing and managing role-based access controls effectively. I recently completed a multi-tenant SaaS application, which included subscription management and API security enhancements. I estimate a timeline of about 4-6 weeks for this project. Regards, Khurshid Ahmed
$260 CAD 9 päivässä
6,6
6,6

With over 1-3 years of extensive experience in Node.js, MongoDB and REST APIs, I, Jay, am very much equipped for your Junior Full-Stack Developer role with a backend emphasis. I have acquired an incredible depth of knowledge in backend development with Node.js and have honed my skills in database management with MongoDB which is essential for this project. My proficiency with REST API development ensures effective connectivity between your React frontend, databases, payment system, and business logic, making your application smooth and efficient. My grasp on Schema design and CRUD operations will guarantee efficient data handling and communication. Moreover, I bring additional value with my knowledge of JWT authentication, Stripe API & webhooks integration as well as basic SaaS knowledge. These are all core components that will be necessary in your project. My familiarity with Git and Postman strengthens my position in conducting API testing and version control effectively. Finally, the bonus of my understanding of Docker and cloud deployment (AWS / Render / Vercel) proves me flexible to meet any additional needs you might have. Let's collaboratively build a not just functional but also sustainable platform!
$500 CAD 15 päivässä
6,7
6,7

Hi, I’m very interested in this role. I have 5+ years of experience in full-stack development (MERN, PHP/Laravel, Vue.js) with strong expertise in Node.js, Express, MongoDB, and REST API development. I’ve built scalable backend systems connecting React frontends with secure APIs, payments, and business logic. My experience includes: Designing clean, modular backend architectures MongoDB schema design & CRUD operations JWT authentication, RBAC, and API security Stripe integration (payments, webhooks) SaaS-based systems with multi-tenant logic I’m comfortable working with Git, API testing tools, and handling end-to-end backend responsibilities independently. I can quickly adapt to your existing React frontend and ensure smooth integration with backend services. I’d be happy to share relevant work samples and discuss further. Best regards, Bhargav
$500 CAD 7 päivässä
6,9
6,9

Your Stripe webhook handler will fail silently if you don't implement signature verification and idempotency checks. That means duplicate charges or missed subscription updates when webhooks retry - I've debugged this exact issue for 4 SaaS platforms. Before we architect the backend, I need clarity on two things: What's your expected user growth in the first 6 months (affects MongoDB indexing strategy), and are you using Stripe's test mode webhooks or do you already have live keys configured? Here's the technical approach: - NODE.JS + EXPRESS: Build a modular REST API with middleware chains for JWT validation, role checking, and error handling that returns consistent JSON responses across all endpoints. - MONGODB SCHEMA DESIGN: Structure collections with proper indexing on userId and tenantId fields to prevent slow queries when you hit 10K+ users, plus implement soft deletes for audit trails. - STRIPE WEBHOOKS: Set up endpoint with raw body parsing, signature verification using your webhook secret, and database transactions to ensure payment status updates don't get lost during failures. - RBAC IMPLEMENTATION: Create a permission matrix that checks user roles against resource ownership before database writes, preventing clients from accessing other tenants' data. - JWT + BCRYPT: Implement token refresh flow with httpOnly cookies and hash passwords with salt rounds of 12 to meet basic security standards. I've built 8 multi-tenant backends that scaled from MVP to 20K users. Let's schedule a quick call to walk through your database schema and payment flow before I start coding - I don't build without understanding edge cases first.
$450 CAD 10 päivässä
7,3
7,3

I am a full stack developer with a strong focus on Node.js BACKEND DEVELOPMENT, and I'd be happy to help build and maintain the backend taht connects your existing React Frontend to the database, payment system and business logic. hi, Nice to meet you in this platform. My dev workflow is Version control using Git/Github -> API testing with Postman -> Secure env-Config using .env variables -> clean, modular backend architecture for maintainability. also I have a strong Experiences with Docker and deployment workflows and email APIs(sendgrid/resend) and multi-tenanat SaaS applications. i'd be happy to discuss with your current architecture and how i can conribute to improving the backend system. hope to hear from you. Thanks Cesar
$250 CAD 7 päivässä
6,5
6,5

A Warm Hello! You’re looking for a backend-focused developer to connect your React frontend with a secure, scalable Node.js system—and I can handle this end-to-end. My approach: Build REST APIs using Node.js + Express with clean structure Design MongoDB schemas for scalable CRUD + multi-tenant SaaS flow Implement JWT auth, bcrypt security, and RBAC (Admin/Client/Guest) Integrate Stripe (payment links + webhooks for subscriptions) Ensure API security, validation, and performance optimization I’ve worked on full-stack systems involving API development, auth flows, and payment integrations, ensuring stability and clean architecture. Extras: Git-based workflow, environment configs, and API testing (Postman) Optional: email/SMS APIs, cron jobs, or deployment support Quick questions: • Do you already have database schema or need it designed? • Is Stripe already set up or needs full integration? Let's set up a quick call to discuss things better. Let's discuss it more in chat. Best Regards, Jemin Sagar
$500 CAD 10 päivässä
6,4
6,4

Hi, I’m a full-stack developer with hands-on experience in Node.js, Express, and MongoDB, and I’ve built REST APIs that connect React frontends to backend services, payment systems, and business logic. I’m comfortable implementing JWT authentication, RBAC role management, and Stripe integrations, and I can ensure clean, secure, and well-documented code that supports multi-tenant applications and SaaS workflows. I’d be excited to help maintain and enhance your backend while keeping everything reliable and scalable. Looking forward for your positive response in the chatbox. Best Regards, Arbaz T
$500 CAD 7 päivässä
6,4
6,4

Hi, I’d be glad to help build and maintain the backend that powers your React application. I work primarily with Node.js and Express, building REST APIs that handle business logic, authentication, and integrations with external services like payment systems. In my recent work, I’ve developed backend services using MongoDB with structured schemas, efficient CRUD operations, and secure authentication using JWT and bcrypt. I’ve also implemented role-based access control to support multiple user roles and permissions in SaaS-style applications. I’m comfortable connecting React frontends to backend APIs, handling JSON requests, and making sure endpoints are secure and reliable. I’ve also worked with Stripe integrations including payment links and webhook handling for automated backend events. My workflow includes Git-based version control, API testing with Postman, and proper environment configuration to keep projects maintainable and production-ready. Thanks, Denis.
$350 CAD 5 päivässä
6,1
6,1

Hii ✋,____ I'm a Seniour full-stack developer with strong backend skills in Node.js, Express, & MongoDB. I can build and maintain your backend, integrate it with your React frontend, handle authentication, payments via Stripe, and implement role-based access, ensuring secure & efficient API communication. -- { Experience :- 8 yrs}
$451 CAD 10 päivässä
6,2
6,2

This is my speciality - building robust backends that connect a React frontend to databases, payments, and business logic. I'm Iosif Peterfi, Senior Web Developer with 15 years in Node.js/Express REST APIs, MongoDB, Stripe, and SaaS RBAC. Check my portfolio for live examples: https://www.freelancer.com/u/iosifpeterfi I'll deliver a Node.js/Express REST API, MongoDB schema, Stripe webhooks/links, JWT auth, RBAC (Super Admin / Client Admin / Guest), and multi-tenant setup. Ready after scope alignment; I can start once you confirm. Quick question: Stripe Intent vs Payment Links for starters?
$650 CAD 14 päivässä
6,3
6,3

Hello, This kind of work is all about precision, not speed and I’m very comfortable working that way. Mixed data (text + numbers) can get messy fast if you’re not careful with structure, so I’ll make sure everything stays aligned, clean, and consistent. I’ll set up proper range validations for all numeric fields and flag anything outside limits in an “Issues” column without touching the original data. After entry, I’ll double-check everything to catch even small errors or formatting slips. You’ll get a clean, accurate sheet with zero guesswork, plus a short note highlighting any anomalies I find. If you want, I can do a small sample first so you can see the accuracy before we proceed. Let’s connect
$1 000 CAD 7 päivässä
6,0
6,0

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