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I’m ready to kick-off a real-time application and need a Node.js expert who knows how to keep latency low and code clean. The first milestone is a working proof-of-concept that lets multiple clients connect via WebSocket ([login to view URL] or a comparable library), exchange events instantly, and expose a simple REST endpoint for health checks and authentication. You’ll architect a modular, scalable codebase in Node.js 18+ (TypeScript preferred), wrap it in Docker for easy local testing, and document every step so I can spin it up with a single npm install && npm start. I want to see unit tests around the critical paths and a README that explains how to add new events or swap in alternate transports later. Deliverables: • Node.js project with WebSocket gateway and sample publish/subscribe events • REST health-check and auth endpoints • Dockerfile + [login to view URL] for local runs • Jest unit tests covering connection, broadcast, and edge cases • Clear README with setup, env-vars, and extension guidelines . Project already available and created; just need a developer to launch it on the local website. Acceptance criteria: After setup, I should be able to connect two browser clients, send a message from one, and watch it appear on the other within 200 ms on a local network, with /health returning 200 OK. Experience with Redis pub/sub, scalable [login to view URL] clusters, or AWS/GCP WebSocket services will set you apart, as these are on the roadmap for the next phase. Share a link or brief summary of a similar real-time project you’ve delivered, and let’s get started.
Project ID: 40669677
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95 freelancers are bidding on average $39 USD for this job

Hello, I have 10 years of experience developing Node.js applications with REST APIs, real-time communication, secure authentication, and cloud deployment. I can launch and complete your existing project with a modular WebSocket gateway, sample publish/subscribe events, health checks, authentication endpoints, Docker configuration, and clear local setup instructions. I would focus on low-latency event delivery, reliable connection handling, clean separation between transport and business logic, and maintainable code that can support future scaling. Critical connection, broadcast, authentication, and edge-case flows will be covered with unit tests. I will also prepare the README with environment variables, startup commands, event extension guidance, and deployment notes so you can run the project consistently. I am comfortable working with an existing codebase and can verify the two-client messaging flow against your local response-time requirement. I would be glad to review the current repository and discuss the next milestone. Best regards
$20 USD in 7 days
5.2
5.2

Hello, I have extensive experience in the mentioned technologies and am ready to start immediately. Let’s connect via chat to discuss the project requirements further. Thank you, Jignesh
$20 USD in 1 day
5.2
5.2

Salam, Based on your requirements, I understand that the project is already created and you need a Node.js/TypeScript developer to launch and configure the existing real-time application locally, ensuring the WebSocket communication, REST endpoints, Docker setup and tests are working correctly rather than rebuilding the project from scratch. I’d keep the existing Node.js 18+ + TypeScript + WebSocket-compatible library + Jest stack and avoid unnecessary changes to the existing project. I’d use Docker/Docker Compose for consistent local setup and keep the WebSocket layer modular so Redis Pub/Sub or a cloud WebSocket service can be introduced later without rewriting the core application. Questions: - Could you share the existing project repository/files so I can review the current setup before making changes? - Do you already have the required environment variables/credentials, particularly for authentication, or should I configure the local .env structure for you? I would love to schedule a meeting or have a detailed conversation about the project to clarify some concerns about the project, this way I can demonstrate my capabilities perfectly and suggest the best result possible. Regards! Royal Designs MH Budget and timeline are placeholders.
$200 USD in 7 days
5.0
5.0

Hi, I can help you with this project. I have relevant experience with Node.js, Express JS, AngularJS and can handle the work from development to testing and delivery. I've reviewed your requirements and can provide a clean, reliable, and responsive solution. Let's discuss the details and get started. Best, Arslan Shahid
$10 USD in 7 days
5.0
5.0

Hey there, The fastest way to get an existing real-time Node.js application moving is to stabilize what’s already built, reproduce the environment locally, and verify the real-time flow end to end. Since the Node.js project is already created, I can focus on getting the existing application running locally rather than rebuilding what’s already there. I’ll trace the current setup, resolve dependency and configuration issues, and verify the WebSocket communication and REST health endpoint with multiple clients. I can also make the local setup easy to reproduce, including Docker and the required documentation where applicable. Once you share the existing project/codebase, I can get started immediately. Portfolio: https://www.freelancer.com/u/Hammadhassan21 Best regards, Hammad Hassan
$300 USD in 10 days
4.5
4.5

Hello, I have 10+ years of experience in web and backend development, and I can set up and launch your existing real-time Node.js project on your local website. I will handle: 1. Node.js WebSocket setup with Socket.IO. 2. REST health-check and authentication endpoints. 3. Docker and docker-compose configuration. 4. Connection, messaging, broadcast, and edge-case testing. 5. Clean and modular project structure. 6. Environment configuration and local setup. 7. Clear README documentation for running and extending the project. I understand the project is already created, so I can focus on getting it running correctly, testing the real-time communication between clients, and fixing any setup or configuration issues. I’m ready to start and can work directly with your existing codebase. Let’s discuss the project and get started.
$30 USD in 5 days
4.0
4.0

Hello! We can launch your real-time Node.js app and prepare it for local testing. 1. Is the current project codebase already set up for the first milestone? 2. Do you need help with the local launch only, or the full setup and checks? — About us We are dZENcode – a full-cycle IT company for digital product development: from design and programming to integrations and post-release support. We build projects from scratch and also work on existing solutions that need further development, improvements, or technical support. You can find detailed information about our services and rates on our official website: https://dzencode.com. Please review it – after that, we can discuss the details and agree on the next step. ⚠️ After clarifying all details, we will define the scope, the suitable cooperation format – task-based, outsourcing, or outstaffing – and the final cost. Projects are guaranteed to reach release with us: • 10+ years providing IT services; • 90+ in-house specialists; • 250+ public reviews since 2015; • We support products under SLA after launch; • We work under NDA and a company contract!
$20 USD in 7 days
4.4
4.4

Hi I can launch and complete your existing Node.js real-time application with a clean WebSocket gateway, REST health/auth endpoints, Docker setup, and Jest tests. I’ll verify multi-client messaging, low-latency event delivery, and ensure the project can be started locally with the documented commands. Thanks Anshuman
$25 USD in 2 days
2.7
2.7

Hello, I checked your project "Node.js Real-Time App Development" and already have a clear understanding of your requirements and how to deliver them efficiently. I have solid experience in Node.js, Express JS, AngularJS, and I've successfully completed similar projects by delivering high-quality, scalable, and reliable solutions. Why choose me? * Strong expertise in Node.js, Express JS, AngularJS * Clean, optimized, and scalable implementation * Fast communication and regular progress updates * Focused on delivering results, not just completing the task I'm ready to start immediately and would be happy to discuss the details. Best regards, Umer
$25 USD in 1 day
1.6
1.6

Hi Mate , Good afternoon! I’ve carefully checked your requirements and really interested in this job. I’m full stack node.js developer working at large-scale apps as a lead developer with U.S. and European teams. I’m offering best quality and highest performance at lowest price. I can complete your project on time and your will experience great satisfaction with me. I’m well versed in React/Redux, Angular JS, Node JS, Ruby on Rails, html/css as well as javascript and jquery. I have rich experienced in REST API, Express JS, NoSQL Couch & Mongo, Node.js, AngularJS, Redis, Docker and Microservices. For more information about me, please refer to my portfolios. I’m ready to discuss your project and start immediately. Looking forward to hearing you back and discussing all details.. With regards
$25 USD in 5 days
0.0
0.0

Hello, I would love to help. I understand what you need and will focus on quality results while keeping you updated. I am an expert with 8 years of experience in Express JS, Node.js, NoSQL Couch & Mongo, REST API and I helped many clients reach their goals. Visit my profile to check my latest work and read short client reviews. Let us make this great together, please connect in chat. Thanks.
$30 USD in 7 days
0.0
0.0

Hi, Thanks for sharing your project. Your requirements align well with our experience in delivering web, mobile app, CRM, and custom software solutions, and we’d be happy to help you build a reliable solution tailored to your needs. Before finalizing the scope, timeline, and budget, we’d like to understand a few key details about your requirements, current setup, and expected outcomes. This will help us suggest the right technical approach and avoid unnecessary development costs. Let’s discuss the project through Freelancer chat. We can also share relevant work samples, explain our proposed approach, and provide you with a clear execution plan, milestones, timeline, and pricing once we understand the complete requirements. We’re available to get started immediately and look forward to discussing your project. Best regards, Royal IT Services
$20 USD in 7 days
0.0
0.0

Is your project already built, but you need an expert to launch it locally and make sure the real-time communication works reliably? I can handle this without rebuilding what already exists. Your Need: Run the existing project, configure WebSocket and REST APIs, and verify real-time communication between multiple clients. What I’ll Deliver: WebSocket testing, Health/Auth APIs, Docker setup, Jest tests, and clear README documentation. **Your Benefit:** A stable, tested, scalable setup that is easy to run and extend in future phases. My USP: I’ll work with your existing codebase instead of rebuilding it from scratch, saving you unnecessary development time and cost. Implementation Plan:** Review → Environment Setup → WebSocket Testing → API & Event Testing → Docker & Tests → Documentation & Handover. Send me the existing project and let’s discuss its current state and the exact requirements before we start.
$10 USD in 3 days
0.0
0.0

With numerous successful projects under my belt, I am confident that I am the Node.js expert you need to bring your real-time application to life. I understand the value of maintaining a low latency, delivering clean code, and maximizing scalability—qualities that will be instrumental in building a modular and efficient system for your project. Having worked extensively with Docker and Node.js, especially for local testing and deployment purposes, I can guarantee a smooth, hassle-free experience in initializing and running your project. Shepherding your idea from proof-of-concept to a fully-fledged product is not new territory for me—I have the skill and acumen necessary to document each step concisely for future reference. In addition, my familiarity with AWS/GCP WebSocket services and Redis pub/sub positions me perfectly as these are on your roadmap for future phases. To back up my words with action, here is a link to my previous work: [insert link]. If you are looking for the perfect blend of talent, commitment, and customer-centric approach, Iterative Tech is here to serve you. Let’s discuss how we can make your real-time app a resounding success.
$30 USD in 2 days
0.0
0.0

LOW LATENCY IS KEY FOR REAL-TIME APPS I’d love to help you bring your real-time application to life. With extensive experience in Node.js and a solid grasp of WebSocket architecture, I've successfully delivered similar projects focused on low latency and clean, modular code. What specific features are you envisioning for the proof-of-concept? Are there any particular challenges you've faced in previous attempts that we should address upfront? The worst-case scenario in reaching out is a free consultation to discuss your goals. Regards, Johan
$10 USD in 14 days
0.0
0.0

Hello, I’m Bharghav, and I bring over 10 years of experience in matching job skills with project requirements, particularly in Node.js and Express JS. I understand that you need a real-time application with low latency and a clean codebase. I will create a modular, scalable architecture using Node.js 18+, incorporating WebSocket for instant event exchange, alongside a simple REST API for health checks. I'm committed to ensuring the project is well-documented, with unit tests to cover critical functionalities. Let’s start a chat to discuss your needs in detail and tailor the solution to your expectations. Best regards, bhargav922002
$21 USD in 3 days
0.0
0.0

Low latency and clean code are critical for your real-time application. Because my background bridges full-stack web development, backend automation, and data optimization, I make sure whatever piece I build for you perfectly aligns with your overall business goals. I will architect a modular, scalable Node.js codebase that ensures efficient WebSocket communication while documenting every step for seamless local testing. You can expect a robust REST endpoint for health checks and authentication, along with comprehensive unit tests and a detailed README that guides future enhancements. You can view my verified work samples attached directly to my freelancer profile portfolio items. What specific performance metrics do you have in mind for the initial proof-of-concept? If the scope is open, let’s jump into a chat to look over the details together. Worst-case scenario? We bounce some ideas around, and you walk away with a free strategic consultation and a clear blueprint to get your project completed. Talk soon, Lee-Roy
$14 USD in 7 days
0.0
0.0

Hi there! I understand you need a Node.js expert to develop a real-time application with low latency and clean code. I can help you create a robust proof-of-concept that meets your requirements efficiently. For your project, I'll architect a modular codebase using Node.js 18+ with TypeScript, implementing WebSocket connections via Socket.IO. My approach includes setting up a Docker environment for seamless local testing, and I'll ensure comprehensive documentation so you can easily set it up with a single command. With experience in unit testing critical paths using Jest, I'll deliver a solid framework that allows for easy future enhancements. You can expect timely communication and a focus on quality. I’ll conduct thorough testing to ensure that your clients can connect and exchange messages within 200 ms, meeting your acceptance criteria. Let’s discuss how we can kick off this project and make it a success. Are you available for a quick chat?
$12 USD in 7 days
0.0
0.0

Hello, I understand you're looking to develop a real-time application with a focus on low latency and clean code. I can create a modular and scalable Node.js application using TypeScript, ensuring it meets your specifications for WebSocket connections and REST endpoints. My approach would involve setting up a robust architecture wrapped in Docker for seamless local testing and comprehensive documentation to facilitate future enhancements. I would ensure that unit tests cover critical paths, providing you with confidence in the system's reliability. Additionally, I’ll create a clear README to guide you through adding new events and adjusting transports as needed. One question I have is about your preferred database for managing user sessions or event data, as this will influence the architecture. Kind regards, Soné Joubert
$10 USD in 14 days
0.0
0.0

J'ai déjà du a réalisé ce type d'application temps réel avec optimismtion de la latente pour une application de gestion des files d'attente
$20 USD in 7 days
0.0
0.0

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