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We are seeking an experienced **Algorithm Developer** to design and implement a custom video recommendation algorithm for our emerging social media platform. This is a time-sensitive project with a 1-day delivery timeline. ## Project Scope Design and deliver a functional recommendation algorithm that suggests relevant videos to users based on engagement patterns and content similarity. The algorithm must integrate seamlessly with our existing tech stack and be production-ready for initial deployment. ## Technology Stack - **Backend Framework: Node.js + [login to view URL] *Database:** MongoDB - Frontend:** React.js - Deployment:Self-hosted infrastructure (Docker preferred) Core Requirements Algorithm Specifications 1. Recommendation Strategy:Hybrid approach combining collaborative filtering and content-based filtering 2. Candidate Generation: Multi-source candidate retrieval (followed creators, similar content, trending videos) 3. Ranking Model: Scoring mechanism based on: - User engagement history (watch time, likes, shares, comments) - Video metadata (category, tags, duration, creation date) - Completion rates and skip behavior - Time-based decay (favor recent engagement) - Content similarity embeddings aDta IntegrationThe algorithm must work with existing MongoDB collections: - *mUsers collection:* User profiles, preferences, viewing history - Videos collection: Video metadata, embeddings, creator information - Interactions collection: Watches, likes, shares, comments, skips - Follows collection: User-to-creator relationships API Endpoints Implement REST API endpoints: 1. `GET /api/recommendations/:userId` - Fetch personalized feed (20-50 video recommendations) 2. `POST /api/interactions/:videoId` - Log user interactions (watch, like, skip) 3. `GET /api/trending` - Trending video recommendations 4. `POST /api/algorithm/retrain` - Trigger model retraining (optional admin endpoint) Deliverables 1. Algorithm Implementation: Complete working code in Node.js/Express.js 2. MongoDB Queries: Optimized aggregation pipelines for data retrieval 3. API Integration:Fully functional REST endpoints ready for React.js frontend 4. Documentation: Code comments, API documentation, and implementation notes 5. **Performance Metrics:** Expected response times and recommendation quality metrics 6. **Docker Setup (Optional):** Containerized deployment configuration ## Technical Expectations ### Performance Requirements - API response time: < 500ms per request - Support concurrent users: Minimum 1000 simultaneous requests - Daily retraining capability for model updates - Scalable architecture for future growth ### Code Quality - Clean, well-documented code - Error handling and validation - Logging for debugging and monitoring - Unit tests for core functions ### Algorithm Efficiency - Recommend videos within available context window - Balance between recommendation diversity and personalization - Avoid creating filter bubbles (include serendipitous recommendations) - Optimize database queries to minimize latency ## Nice-to-Have Features - A/B testing framework for algorithm variations - Recommendation explainability (why this video was recommended) - Cold-start handling for new users/videos - Admin dashboard for monitoring algorithm performance - Multi-language support for content categorization Budget & Timeline - Deadline: 1 day from project - Preferred Candidates:** Developers with prior experience in recommendation systems or machine learning engineering Ideal Candidate Profile - 3+ years experience with Node.js and [login to view URL] - Proven MongoDB expertise with complex queries/aggregations - Understanding of recommendation algorithms and machine learning concepts - Experience with recommendation systems or content discovery algorithms - Ability to deliver production-ready code under tight deadlines - Strong problem-solving skills and communication abilities - Experience with self-hosted deployment (Docker, Linux preferred) How to Apply - Portfolio or GitHub links demonstrating algorithm/ML work - Brief overview of your approach to building this algorithm - Availability confirmation for immediate start - Technical references or past project examples Project Communication - Daily check-ins during development - Real-time Slack/Discord communication - Immediate feedback on deliverables - Post-delivery support for integration assistance
Proje No: 40060467
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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
$80 CAD 3 gün içinde
5,0
5,0

Hello, I’m excited to apply for the Algorithm Developer role to design and implement a production-ready video recommendation system for your social media platform. I have strong experience building hybrid recommendation engines, optimizing MongoDB aggregation pipelines, and delivering Node.js APIs under tight deadlines. I am available to start immediately and can deliver within the 1-day timeline.
$150 CAD 1 gün içinde
2,5
2,5
38 freelancer bu proje için ortalama $139 CAD teklif veriyor

I have extensive experience in Algorithm, Node.js, React.js, MongoDB, and Data Integration, making me a perfect fit for the Video Recommendation Algorithm project. I am confident in my ability to deliver high-quality code within your budget and timeline. Let's discuss the full project scope to adjust the budget accordingly. I am eager to start working on this project and showcase my skills. Please review my 15-year-old profile for past work. Looking forward to hearing from you.
$175 CAD 7 gün içinde
5,2
5,2

⭐ Hello there, My availability is immediate. I read your project post on React/Node Developer for Video Recommendation Algorithm. I have extensive knowledge in MERN Stack (MongoDB/MySQL, Express JS, React, and NodeJS), as well as RESTful API integration. I am an experienced team of full-stack developers with skill sets in - React, JavaScript, jQuery, TypeScript, NextJS, React Native - NodeJS, ExpressJS - MongoDB, MySQL, PostgreSQL, SQLServer, SQLite - Redux, Thunk, GIT - JavaScript, HTML, CSS, Tailwind CSS - AWS, Azure, Digital Ocean, GoDaddy, Web Server Hosting Please send a message So we can quickly discuss your project and proceed further. I am looking forward to hearing from you. Thanks
$230 CAD 3 gün içinde
5,2
5,2

Hello! I'm an expert in recommendation systems and backend algorithm development with over 9 years of experience building production-ready content discovery engines for social platforms. I specialize in Node.js, MongoDB optimization, and hybrid recommendation approaches that balance personalization with content diversity. Here's how I can help: - Build a hybrid recommendation algorithm combining collaborative and content-based filtering with your existing MongoDB collections - Implement optimized aggregation pipelines delivering sub-500ms response times for personalized feeds - Create fully functional REST API endpoints integrated seamlessly with your React frontend - Deliver production-ready Docker configuration with complete documentation and unit tests My approach balances engagement signals, content similarity embeddings, and time-decay factors while avoiding filter bubbles through strategic serendipity injection. I'll ensure your algorithm handles cold-start scenarios and scales for concurrent user growth.
$140 CAD 4 gün içinde
4,9
4,9

Having worked as a full-stack developer for the past decade, I have gained valuable experience in developing effective Recommendation Systems, working with emerging technologies like Node.js and React.js. My deep understanding of advanced querying systems in MongoDB enables me to optimize data retrieval and ensure seamless integration with the project's tech-stack. The solid foundation in machine learning engineering you seek in an ideal candidate is one of my specialties, making me highly proficient at implementing algorithms that blend collaborative filtering and content-based filtering just as you require -- factors that enhance recommendation accuracy while ensuring each user gets content they prefer. I believe my strong technical knowledge combined with a firm understanding of recommendation systems make me the best candidate to work on this video recommendation algorithm - guaranteeing not only optimal response times even under high user-loads but also accommodation of new users/videos (via cold-start handling) for usability. I offer more than just coding skills: I proactively analyze potential issues suh as scaling to support future growth or creating filter bubbles that we vow to keep away from our algorithms. With me on your team, you can be assured of quality performance, maximum security, and user satisfaction.
$100 CAD 1 gün içinde
4,1
4,1

Hello, I’ve carefully reviewed your project and know exactly how to deliver results that are strategic, efficient, and tailored to your goals with no wasted time or guesswork, just real, measurable value. With several years of hands-on experience in Algorithm, Node.js, React.js, MongoDB, Data Integration, A/B Testing, API Development, REST API, I bring not just expertise but a track record of delivering results that help clients move forward with confidence. My Portfolio: https://www.freelancer.ca/u/DGM999 If you’re looking for reliable, quality-driven support, I’m just a message away. Let’s make it happen. Best Regards, Sadat Saeed
$90 CAD 3 gün içinde
4,0
4,0

Dear Client, I am excited about your project "Video Recommendation Algorithm Required" and confident I can deliver excellent results. With strong experience in similar work, I understand your requirements and can start immediately. I would love to discuss your project further and answer any questions. Thanks and best regards, Faizan
$90 CAD 5 gün içinde
3,9
3,9

Hi, We went through your project description and it seems like our team is a great fit for this job. We are an expert team which have many years of experience on Algorithm, Node.js, React.js, MongoDB, Data Integration, A/B Testing, API Development, REST API Please come over chat and discuss your requirement in a detailed way. Thank You
$140 CAD 7 gün içinde
3,5
3,5

⭐If you award me, your smile shows up.⭐ Hi Parth P. Your project really caught my attention — it’s very similar to one I completed recently. The setup feels familiar, with the same kind of challenges, just a few unique details. That’s actually great news, because it means I already know what works and can move fast without trial and error. Most importantly, I have deep experience and hands-on expertise with Algorithm, React.js, MongoDB, A/B Testing, Data Integration, REST API, Node.js and API Development. In my portfolio, you can find a project similar to yours. https://www.freelancer.com/u/thomasb726 If you’re open to it, I’d love to hear more about what you’re building and share a few ideas from my past experience. ❓ Why clients choose me: ✅ Clear, fast, and proactive communication — you’ll never be left guessing where things stand. ✅ I treat your deadlines and reputation like my own — because once we start, they are. ✅ Easy to talk to, quick to respond, and focused on making your job easier. ✅ I always stand by and support the clients I work with, even long after delivery. Many of my clients stay with me long-term — because I show up, deliver, and don’t disappear. If you’re looking for a project executed with precision and quality, let’s chat soon and get started. Best, Tom
$250 CAD 3 gün içinde
3,4
3,4

Hi Parth, I'm Larasati, an Algorithm Developer with hands-on experience building production-ready recommendation systems. Your 1-day delivery window is tight, but with a focused MVP we can ship a solid, scalable starter that integrates with your Node.js/Express backend and MongoDB data model. From your description, I would approach this by building a hybrid recommender: collaborative filtering for user-item patterns and content-based signals from video metadata and embeddings. We'll generate candidates from followed creators, similar content, and trending videos, then rank with a scoring function that weighs engagement (watch time, likes, shares, comments), metadata, completion rates, skip behavior, time decay, and content similarity. The pipeline will leverage your existing collections (mUsers, Videos, Interactions, Follows), with optimized MongoDB aggregations and embedding-driven similarity. Endpoints will be: GET /api/recommendations/:userId, POST /api/interactions/:videoId, GET /api/trending, POST /api/algorithm/retrain. We'll ship unit-tested modules, comprehensive docs, clear logging, and a Docker-ready setup for self-hosted deployment. Would you like me to prioritize fastest possible response time or deeper explainability and experimentation (A/B tests) for the initial deployment? Also, is multi-language support a requirement for the initial rollout, or planned for a later phase? Looking forward to discussing details. Best regards, Larasati
$125 CAD 3 gün içinde
2,7
2,7

Hi Parth, I’m Robert, a Senior Full-Stack & AI Engineer with over 10 years of experience architecting and delivering SaaS platforms, automation systems, and intelligent applications, specializing in recommendation algorithms, performance tuning, and scalable architectures. Recently, I successfully developed a video recommendation system for a social media platform using Node.js and MongoDB, combining collaborative filtering and content-based methods. My expertise aligns perfectly with your requirements, as I understand the intricacies of user engagement patterns and can implement a robust algorithm that integrates seamlessly with your existing tech stack. I can complete this project perfectly and deliver scalable, production-ready results. I am committed to clean architecture, structured documentation, and ensuring high performance with response times under 500ms, allowing for 1,000 simultaneous users. Let’s connect to refine your requirements and begin building a solution that exceeds expectations. What specific metrics do you want to prioritize for measuring recommendation success?
$250 CAD 1 gün içinde
2,4
2,4

Hello, I’ve reviewed your requirements for a hybrid video recommendation system and can deliver a production-ready algorithm combining collaborative and content-based filtering, optimized MongoDB aggregations, and low-latency Node.js/Express APIs (<500ms). I’m a senior full-stack developer with 7+ years of experience, strong hands-on work in Node.js, Express, MongoDB, recommendation logic, engagement scoring, time-decay ranking, Dockerized deployments, and scalable backend architecture under tight deadlines. I’m available to start immediately and can complete the full implementation, APIs, documentation, and optional retraining endpoint within your 1-day timeline. Best regards, Homayun Afrabandpey
$140 CAD 3 gün içinde
2,4
2,4

Hello, I am a React Developer with 15+ years of experience in building modern, responsive, and high-performance web applications. I specialize in dynamic UIs, reusable components, API integration, and state management (Redux/Context API) to deliver seamless user experiences. Recently, I worked on OpenAI API integration for auto-generated articles, images, and social sharing, which shows my ability to adopt and implement the latest technologies. If you are looking for a dedicated React expert who ensures quality, innovation, and timely delivery, I’d be glad to work on your project.
$100 CAD 7 gün içinde
3,0
3,0

Hello Parth P., We went through your project description and it seems like our team is a great fit for this job. We are an expert team which have many years of experience on Algorithm, Node.js, React.js, MongoDB, Data Integration, A/B Testing, API Development, REST API Lets connect in chat so that We discuss further. Regards
$250 CAD 7 gün içinde
1,4
1,4

⭐⭐⭐⭐⭐ I’ve built and deployed hybrid recommendation systems (collaborative + content-based) on Node.js/Express with MongoDB, optimized for low-latency feeds and high concurrency, and I can deliver a production-ready solution within your 1-day timeline. My approach uses multi-source candidate generation (follows, similarity embeddings, trending) with a time-decayed ranking model driven by engagement signals and efficient MongoDB aggregation pipelines to stay under 500 ms response times. I’ll provide clean, well-documented APIs, logging, basic unit tests, and optional Docker setup, with clear metrics on performance and recommendation quality. I’m available to start immediately and can share GitHub examples of recommendation and data-driven systems on request.
$120 CAD 3 gün içinde
1,0
1,0

Thanks for posting this project. I've checked it and it's really suitable for me - my skillset. I already have extensive experience in this field - tech what you need. My focus is not only the full functional product, but also the clean, modular code. I'd like to discuss the project details to confirm everything. Looking forward to your response. Sergey.
$140 CAD 1 gün içinde
0,0
0,0

I can deliver a production-ready hybrid recommendation algorithm within 24 hours using Node.js, Express, and MongoDB, combining collaborative filtering (user–user and user–creator signals) with content-based similarity via video embeddings and metadata scoring. I’ll implement efficient aggregation pipelines for candidate generation (follows, similar content, trending), apply time-decay and engagement-weighted ranking, expose all required REST endpoints, and document performance expectations, with clean, testable code that integrates directly into your existing collections and React frontend.
$120 CAD 1 gün içinde
0,0
0,0

I have hands-on experience building fast recommendation pipelines in Node.js with MongoDB and can implement a scalable hybrid recommender that balances personalization, recency, and diversity while avoiding filter bubbles. I’ll focus on optimized queries to keep response times under 500ms, include cold-start logic for new users and videos, deliver the required APIs, and provide clear documentation and retraining hooks so your team can iterate on ranking logic after launch.
$100 CAD 1 gün içinde
0,0
0,0

Hi Parth, I’d love to help you design and ship a production-ready video recommendation algorithm for your social platform within your tight 1-day window. With hands-on experience building Node.js/Express backends, MongoDB data models, and React frontends, and a track record delivering ML-driven services in Dockerized environments, I can align with your stack and performance targets. Here’s what I’ll deliver: - Complete hybrid recommendation algorithm (collaborative + content-based) with multi-source candidate generation (follows, similar content, trending) and a robust ranking model. - Data model and optimized MongoDB pipelines using mUsers, Videos, Interactions, and Follows collections. - REST endpoints wired for your frontend: GET /api/recommendations/:userId, POST /api/interactions/:videoId, GET /api/trending, POST /api/algorithm/retrain. - Documentation: inline code comments, API docs, and a concise implementation notes section. - Performance targets and monitoring hooks: sub-500ms responses, support for 1000 concurrent requests, and a plan for daily retraining. - Docker deployment notes and an optional docker-compose setup for local development. Milestones: - M1: API scaffold, data access layer, and initial candidate retrieval - M2: Implement ranking logic, embeddings integration, and latency checks - M3: Endpoints wired, basic tests, and frontend integration notes - M4: Documentation, performance metrics, and Docker setup guidance Do you have embeddings already stor
$30 CAD 4 gün içinde
0,0
0,0

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