Backend Developer for Social Media Backend

@Microlent

Hello, Building a social media backend that can support 10,000+ concurrent users is less about Lambda functions and more about designing the right feed architecture, data access patterns, and DynamoDB strategy from day one. Your requirement for AWS Serverless, Cognito, DynamoDB, media delivery, notifications, follows, comments, and search aligns well with modern event-driven architectures. The area I would focus on first is the social feed because it becomes the largest cost and performance driver as the platform grows. For this project, I would recommend: • Node.js + TypeScript backend • AWS Lambda + API Gateway • DynamoDB Single Table Design • Cognito authentication • S3 + CloudFront for media delivery • Event-driven notifications • Caching and feed optimization strategies • Cost-efficient scaling patterns for high concurrency Beyond development, I can review the overall architecture, identify bottlenecks before launch, and recommend scaling approaches that balance performance with AWS costs. One important question: will the feed primarily contain posts from followed users, or do you also plan to support recommendation-based discovery feeds? Regards, Rajesh Microlent Systems

@vishal1145

Your DynamoDB schema will become a bottleneck if you're not using single-table design with proper GSIs for feed queries. At 10K concurrent users, inefficient access patterns will spike your read costs and slow feeds to 2-3 seconds. Before architecting this, I need clarity on two things: What's your expected read/write ratio for the feed (are users scrolling 10x more than posting)? And do you need real-time notifications or can they be eventually consistent with a 30-second delay? Here's the architectural approach: - NODE.JS + TYPESCRIPT: Build Lambda functions with strict typing and shared layers to reduce cold start times from 3s to under 500ms while keeping bundle sizes minimal. - DYNAMODB SINGLE-TABLE DESIGN: Implement access patterns using composite keys and GSIs to handle feed queries, follower graphs, and notifications in a single table - reducing costs by 60% vs multi-table approach. - AWS LAMBDA + SQS: Use event-driven architecture with dead letter queues for likes/comments/follows to handle traffic spikes without throttling and ensure zero data loss during peak loads. - CLOUDFRONT + S3: Set up signed URLs with edge caching to serve media at sub-100ms latency globally while preventing unauthorized access to user content. - ELASTICACHE REDIS: Cache hot feed data and user sessions to cut DynamoDB reads by 70% and keep response times under 200ms even at 10K concurrent users. I've built 3 social platforms that scaled from 0 to 50K users using this exact stack. Let's schedule a 20-minute call to walk through your data model and cost projections before you commit to a build.

@KavyaTechNepal

Namaste, I can help architect and develop a scalable AWS serverless backend for your social media platform with a strong focus on performance, reliability, and cost optimization. My expertise includes: . Node.js & TypeScript backend development . AWS Lambda, API Gateway, DynamoDB, Cognito, S3, and CloudFront . DynamoDB single-table design and high-throughput data modeling . Social features including feeds, likes, comments, follows, notifications, and search . Event-driven architectures using SQS, SNS, and EventBridge . Caching and performance optimization with CloudFront, Redis/ElastiCache, and API-level strategies . Infrastructure documentation, deployment pipelines, and API documentation For a platform targeting 10,000+ concurrent users, I would review the complete architecture, optimize DynamoDB access patterns, design scalable feed generation strategies, and recommend cost-efficient AWS services to support long-term growth. Best regards, Amit G. Kavya Tech Nepal

@kishanbwts

I’ve built serverless backends for social apps with 10,000+ concurrent users, using Node.js, TypeScript, and DynamoDB single table patterns to keep things fast and cost-effective. For one project in the community space, I designed APIs that handled real-time feed updates, likes, and notifications without expensive read/write bottlenecks. For your app, I’d focus on efficient DynamoDB keys and secondary indexes to optimize feed queries and scalable caching for hot data, plus AWS Cognito flows that keep user sessions secure but seamless. One question: do you expect read/write patterns to be evenly distributed, or will you have hot partitions for certain users or popular posts? That affects your design choices and caching layers. I’ll review your entire AWS architecture to find opportunities for cost savings and better scaling, especially around Lambda concurrency and API Gateway limits. Documentation and deployment setup are part of the scope, so you’ll be ready to launch and maintain confidently. I can deliver a production-ready backend with scalability built in within 6 weeks. Let me know if you want to discuss your current architecture first—I can provide quick feedback to save you time.

@santoshkumars17

As an accomplished Full Stack Developer with over 5 years in the field, creating robust backend architectures is my bread and butter. My Skills extend to the fields required for your social media app—Node.js, TypeScript and AWS serverless architecture - all skills necessary for handling high-concurrent systems with up to 10,000 users and ensuring their seamless interaction with your frontend. Some of my significant feats on similar projects are working on community platforms before, as well as my hands-on experience with DynamoDB at scale; tackling issues involving performance optimization and caching strategies to keep systems running smoothly. And when it comes to keeping AWS costs lean while maintaining top performance, I'm unmatched in identifying cost optimization measures without compromising on system efficiency. In hiring me, you will be taking advantage of my professional strengths including clean and optimized coding practices, on-time delivery, considerable experience in API development and strong communication skills which will be evident from the detailed production-ready backend, infrastructure documentation, API documentation, deployment set-up and scalability recommendations that I would provide for your project. Consider this the start of our journey together!

@fullstack0407

I have read your requirements carefully and would love to help architect and build the AWS serverless backend for your social media platform. With a target of supporting thousands of concurrent users, the success of this project will depend heavily on data modeling, event-driven architecture, caching strategy, and cost optimization from day one. For this platform, I would recommend a serverless architecture built around AWS Lambda, API Gateway, DynamoDB (Single Table Design), Cognito, S3, CloudFront, EventBridge, SQS, and SNS. This approach provides high scalability, low operational overhead, and excellent cost efficiency while maintaining the flexibility needed for social features such as feeds, follows, likes, comments, notifications, and media delivery. A major focus would be feed architecture and access patterns. DynamoDB table design, indexing strategy, denormalization patterns, and caching layers must be planned carefully to support high-volume reads and writes without excessive costs. Search functionality can be implemented using OpenSearch or a dedicated indexing pipeline depending on your performance and budget requirements.

@UzeeTech

With my extensive background in backend development and working with AWS, I can confidently say I’m a perfect fit for your project. I have 7+ years of experience building and delivering production-grade web applications similar to your niche-focused social media app. I am proficient in AWS Serverless Architecture, Node.js, TypeScript, and DynamoDB Single Table Design, which are all essential for this project. Moreover, my experience with social media and community platform development aligns precisely with the functionalities you require such as Likes, comments, follows, notifications and search implementation. My knowledge of high-scale API development can ensure smooth user experience even with concurrent users up to 10000 using AWS Lambda + API Gateway. Additionally, being skilled at cost-optimized AWS architectures my work on your backend not only deliver scalability but also maintain low costs. In terms of deliverables, I'll provide you with a production-ready backend with infrastructure documentation and well-documented API documentation. The deployment setup will be robust for your team's convenience in the long run. Lastly, just like my other clients can attest, our communication channels will always be open and you can count on receiving regular updates. Choosing me means choosing quality work delivered promptly!

@AZTURK1

Hi there, I will architect a Node.js + TypeScript serverless backend using AWS Lambda, API Gateway and a DynamoDB single-table design to support ~10,000 concurrent users; my AWS serverless experience makes Khalil the right fit. - Production-ready backend: TypeScript Lambdas, API Gateway routes, DynamoDB single-table design, Cognito authentication, S3 + CloudFront media delivery - Infrastructure as Code & deployment: CDK/SAM templates, GitHub Actions CI/CD, API documentation, and admin analytics APIs - Optional: load-testing scripts, caching layer (DAX or ElastiCache), and cost-optimization tuning - Risk control: staged deployment with cutover verification and post-deploy validation Skills: ✅ AWS Lambda ✅ DynamoDB single-table design ✅ Database Design ✅ API Gateway ✅ S3 + CloudFront ✅ Performance optimization and caching strategies Certificates: ✅ Microsoft® Certified: MCSA | MCSE | MCT ✅ cPanel® & WHM Certified CWSA-2 Available to start immediately. Is this backend already running on a live production server, or should I implement and test via a staged rollout first? , ₹72,000 INR , delivery 7 days. - ROLE & GOAL

@Shrutibimpl

Hello, I will architect and develop your serverless backend using Node.js and TypeScript on AWS. I will design a highly optimized DynamoDB database using Single Table Design to handle user relations, likes, comments, and follows with low-latency lookups. To support 10,000 concurrent users, I will write efficient AWS Lambda functions exposed through API Gateway, utilizing AWS Cognito for scalable user authentication. I will also configure S3 buckets and CloudFront distributions to deliver images and video files with caching strategies that reduce transfer fees, and construct a scalable social feed architecture designed for high-throughput reads and writes. 1) Do you prefer using Serverless Framework, AWS SAM, or Terraform to deploy the infrastructure as code? 2) What service or strategy do you plan to use for the user search feature? 3) Are you utilizing AWS Step Functions or SQS queues to process asynchronous background tasks like push notifications? Thanks, Bharat

@raj00565

With profound skills in AWS Serverless Architecture, Node.js and TypeScript, I have a strong foundation to build scalable backends using high-scale API development for social media or community platforms. Furthermore, drawing from my extensive experience in system administration, network engineering, and DevOps for over 12 years now, I am proficient enough to design and deploy your AWS infrastructure and provide you with necessary insights on utilizing it for thousands of concurrent users with low costs. Among my most relevant expertise for your project is the successful implementation of DynamoDB at scale. I’ve designed single table designs in DynamoDB for various projects that manage high volumes of data efficiently. I believe this bears exceptional relevance to your requirement of scalable social media feed architecture and the likes, comments, follows implementations. Also, my familiarity with Amazon Cognito would ensure robustness in user authentication on your platform. Overall, hiring me ensures not just an AWS backend architect but also an experienced professional who can review your architecture and suggest best practices for scaling to thousands of active users while keeping AWS costs low. I guarantee you a production-ready backend along with comprehensive infrastructure documentation, API documentation, deployment setup and scalability recommendations. Let’s make this niche-focused social media app a resounding success together!

@techsty2014

Hi, We will architect and deploy your social media backend on AWS Lambda, API Gateway, DynamoDB, Cognito, and CloudFront as a fully serverless stack. For DynamoDB, we will use a single table design with composite keys that support feed queries, follower lookups, and notification reads without extra tables. This keeps costs low and latency under 10ms at 10,000 concurrent users. We will also add DAX caching for hot feed paths to reduce read costs further. A couple of quick things to confirm: 1) Will the feed be chronological, algorithmic, or a mix of both? 2) Do you have an existing Cognito setup, or will we configure user pools and identity providers from scratch? The number quoted here is a starting estimate. The exact cost and timeline will be confirmed after we go through the full scope together. Send me a message and we can go over the details. Best regards, Faizan

@KarthikTechCon

Hello, I'm Karthik, with 15+ years of experience designing and delivering scalable cloud-native applications and AWS serverless architectures. Your social media platform requirements align closely with our expertise in Node.js, TypeScript, AWS Lambda, API Gateway, DynamoDB Single Table Design, Cognito, S3, and CloudFront. We can architect a production-ready backend capable of supporting 10,000+ concurrent users while optimizing performance and AWS costs. ✔ AWS Serverless Architecture & Infrastructure Design ✔ Node.js + TypeScript Development ✔ DynamoDB Single Table Modeling ✔ Cognito Authentication & Authorization ✔ Social Feed, Likes, Comments, Follows & Notifications ✔ Search & Analytics APIs ✔ Caching & Performance Optimization ✔ API & Infrastructure Documentation ✔ Scalability and Cost Optimization Recommendations Our team has experience building high-traffic SaaS, marketplace, social, and AI-driven platforms on AWS, including Lambda, DynamoDB, Bedrock, Cognito, CloudFront, and event-driven architectures. I would be happy to discuss your architecture and provide recommendations before development begins. Regards, Karthik 15+ Years Experience Resonite Technologies

@iimtpradeepdash

Hi! Your push for a Node.js and TypeScript backend with serverless AWS—especially DynamoDB and Cognito—lines up with social app builds I’ve done for live user loads in this range. Most social platforms hit scale snags at feed query speed or media delivery, so designing the feed and cache from day one matters. I built a high-concurrency social app backend last year (Live Connect project, under NDA) using Lambda, API Gateway, DynamoDB single-table design, Cognito for login, and S3/CloudFront for media. Delivered search, reactions, and admin analytics with low AWS overhead. Quick question: do you expect your feed to support ranked sorting (by popularity, recency, or both)? This changes the DynamoDB indexes and caching logic. Want a rough first draft of the DynamoDB schema and Lambda API mapping? No charge—just reply. You can also see similar platform builds at work.techindika.com. — Pradeep

@NEHABHAT92

With your project in mind, I believe my 9+ years of dedicated web and mobile development experience, specializing in E-commerce and CMS-based websites can be a major asset for your social media app project. While our introductory on focus was on website and mobile apps, we have skill sets aligned to your requirement. We also have particular expertise when it comes to building scalable backend systems, especially utilizing AWS serverless architecture like the one you're seeking. Though admittedly we haven't built known social media platforms, this is almost as an expert required level task as these are usually very complex systems that require precision, careful planning and scalability. Therefore, my team and I are well equipped to take up this challenge with confidence. Having experience handling high scale API developments with popular services such as AWS Lambda, API Gateway, etc., I can assure you that our understanding of performance optimization tactics and caching strategies will be beneficial when confronted by your expected concurrent user traffic. Additionally, since social media or community platform experience is a must-have for this project - even though our recent track record does not focus on this - our overall technical strength combined with the quick and adaptative policy we follow invariably ensures that we are well positioned to tackle novel technically challenging projects. I'm excited to discuss more about your project details so let's connect soon!

@otusonellp

At OTUSONE, we strive to help businesses leverage the power of technology to maximize their potential. As an AWS-focused backend developer with extensive experience in Node.js and TypeScript, I am well-equipped to handle the unique challenges your social media app presents. My proficiency in high-scale API development, social media/community platform experience, and performance optimization will ensure your app performs optimally even under heavy load. In addition, my thorough understanding of AWS services aligns perfectly with your project's needs. I have successfully implemented AWS Lambda and API Gateway for serverless architectures and leveraged DynamoDB at scale using Single Table Design - ensuring maximum efficiency and cost-optimization. Finally, I believe in collaborative project development. That's why apart from delivering a production-ready backend with efficient documentations and a scalable architecture- I go an extra mile to review the overall architectural strategy and suggest best practices for scalability as well as cost-effectiveness on AWS. I look forward to bringing my expertise into this partnership to create a powerful backend infrastructure that mobilizes your niche-focused social media app for high success.

@sgwtechnology

Hi, Your project aligns closely with my experience building scalable backend systems using Node.js, TypeScript, and AWS Serverless technologies. I can design and develop a production-ready backend capable of supporting high concurrency while keeping infrastructure costs optimized. My expertise includes AWS Lambda, API Gateway, DynamoDB (Single Table Design), Cognito, S3, CloudFront, caching strategies, event-driven architectures, notifications, search, and high-performance API development. I can also review your overall architecture and recommend proven scaling patterns for feeds, likes, comments, follows, and real-time engagement features. Deliverables will include a production-ready backend, infrastructure and API documentation, deployment setup, and scalability recommendations. My focus is on building a secure, maintainable, and cost-efficient system that can grow with your user base. I’d be happy to discuss similar projects, architecture approaches, timeline, and budget in detail. Best, Mukesh

@ForUConsultant

As a backend developer with strong experience in AWS serverless architecture and scalable API systems, I am excited to help build your niche-focused social media platform with performance, reliability, and cost efficiency in mind. You need a production-ready serverless backend using Node.js, TypeScript, and AWS services that can support around 10,000 concurrent users, with efficient feed architecture, real-time interactions, and optimised cost and performance. 1. Design a scalable serverless architecture using Lambda, API Gateway, and DynamoDB single-table design 2. Implement efficient feed generation with caching strategies and pagination for performance 3. Build secure authentication and user management using AWS Cognito 4. Develop core social features like likes, comments, follows, and notifications with event-driven design 5. Optimise cost using CloudFront caching, S3 media handling, and DynamoDB access patterns I would be happy to discuss your idea in detail and share how we can build a scalable and cost-efficient backend. Let us connect for a quick chat to explore the next steps.

@ahmadraza001912

Hi, with 10000 concurrent users on the table, the DynamoDB single table design is really what decides if the feed and notifications hold up or need a rebuild in six months. I'd structure it as: - Lambda + API Gateway for the API layer, Cognito for auth - DynamoDB single-table with GSIs for feed, follows, likes, and notifications - S3 + CloudFront for media delivery - A caching layer (DAX or Lambda-side) on hot read paths to keep this cost-optimized as you scale Most of my recent work has been Python/Node backends on AWS, keeping infra lean instead of over-provisioned, which is the same instinct this project needs. One question: do you want likes/comment counts updated synchronously, or eventually consistent via DynamoDB Streams? That choice shapes the whole single table design. Can sketch the access patterns before we settle on budget.

@KrisuTechkul

Hi, Krishna here from Delhi - we are a team of 20+ engineers and have completed more than 300 projects with 4.7 rating. We have gone through your project requirements and would like to schedule a discussion call please. With deep experience and an end-to-end grasp of building robust, scalable and cost-effective architectures on AWS, I bring the specialized skills you need for this project. My past work includes developing AI-based systems for demand forecasting, generative content creation, and automated quality control; all of which have a high degree of relevance to our work at hand here. For instance, my expertise with DynamoDB at scale can be leveraged to ensure the database design is optimized for high-volume social feed interactions like likes, comments, follows and ensuring notifications are handled efficiently. My understanding of Node.js & TypeScript coupled with API development skills will guarantee a reliable and high-level backend that can handle concurrent users. In the past, I have implemented AWS Cognito authentication along with S3 + CloudFront media delivery for secure-optimized media uploads and downloads which could be valuable for your niche-focused app too.