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Node.js Backend Lead Engineer
Project ID: 40604587
188 proposals
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Hi, I'm Hamza, a backend engineer specializing in Node.js, [login to view URL], REST APIs, and scalable backend architectures. I've worked on production backend systems involving API development, database design, authentication, integrations, and performance optimization, with a strong focus on writing clean, maintainable, and reliable code. I understand that a backend lead is expected to deliver more than just features. A well-designed Node.js backend can handle thousands of concurrent requests efficiently, while a microservices architecture can significantly improve scalability, deployment flexibility, and long-term maintainability when implemented correctly. I'm comfortable working in Agile environments, collaborating with cross-functional teams, reviewing code, optimizing API performance, and building secure backend services using modern development practices. Whether it's designing new services, improving existing systems, or resolving complex backend issues, I focus on delivering stable and high-quality solutions. I'd be happy to discuss your project requirements and how I can contribute to building a reliable, scalable backend for your platform. Thank you for your time
$300 USD in 6 days
0.0
0.0
188 freelancers are bidding on average $433 USD for this job

Hi — Elias here from Miami. I see you're looking for a Node.js Backend Lead Engineer. It’s clear that your goal is to develop a robust backend system that effectively supports your application’s needs. The real challenge often lies in ensuring scalability and maintainability. With Node.js, managing microservices and API integrations can become complex, especially when considering future expansion. A common issue in such systems is maintaining performance as user demand grows. This is where a solid architecture can make all the difference. My approach focuses on building a modular backend. I prioritize clean code and thorough documentation, making future updates easier. I’ve implemented similar systems that required intricate state management and efficient permission controls, ensuring both reliability and smooth user experiences. A few questions to better understand the scope: Q1 – What user roles and permissions do you envision for the system? Q2 – How do you plan to handle integrations with existing services? Q3 – What are your expectations for scaling the application in the next year? Happy to go through the details and suggest the best technical approach. Looking forward to hearing from you.
$500 USD in 5 days
8.3
8.3

Hi, I see you're looking for a Node.js backend lead who can handle complex API integrations and improve system security. Sometimes, it’s challenging to keep both in mind while managing tight deadlines. I’ve worked on projects like a multi-vendor marketplace where smooth API coordination was key, and a ticketing system with sensitive health data that needed top security. I plan to create a well-structured backend, ensuring fast data processing and smooth user experience. I will focus on making your API work seamlessly with front-end needs and ensure your database is optimized and secure. For real-time features like live updates, I’ll use efficient tools that help your app stay responsive. Managing user data responsibly and ensuring your system is preventively protected from attacks will be my priority. Also, I’ll make sure your project is easy to update and maintain, saving you time and helping your business grow. Plus, I will support you after the launch to fix any issues cleanly. Have you thought about how your backend can grow as your user base expands, without slowing down or exposing vulnerabilities? Let’s talk about how we can plan a strong foundation and build something even bigger together. Regards, Nick.
$250 USD in 3 days
8.3
8.3

Hi there, I have strong experience leading Node.js backend development, designing scalable APIs, optimizing system performance, and building secure, production-ready services. I can contribute across architecture, REST/GraphQL APIs, database design, authentication, real-time features, third-party integrations, testing, CI/CD, and code reviews while collaborating effectively with frontend and DevOps teams. I focus on writing clean, maintainable code and delivering reliable backend systems that scale with business growth. Could you please share the project overview and let me know which technologies are included in your stack (e.g., Express, NestJS, Fastify, PostgreSQL, MongoDB, Redis, AWS)? Kindly send me a message to discuss more in detail. Thanks.
$300 USD in 6 days
7.9
7.9

Hi, I'm ready to lead the Node.js backend development. I will ensure the architecture is scalable and maintainable, focusing on performance optimization. My approach includes setting up a robust API, integrating necessary databases, and implementing security best practices. If you have any specific requirements or questions, feel free to ask. Looking forward to collaborating with you. Best regards.
$250 USD in 5 days
7.8
7.8

A Node.js backend lead role is right where my strengths sit — I've spent years architecting and shipping production backends in Node with Express and NestJS. I design clean, scalable REST and WebSocket APIs backed by PostgreSQL or MongoDB, with Redis for caching and queues, solid auth (JWT/OAuth, role-based access), and structured logging and error handling so things stay debuggable under load. Beyond writing code, I'm comfortable setting the patterns a team follows — service structure, migrations, testing, CI/CD and Dockerised deploys — and reviewing work to keep quality high. To pitch this properly I'd love a bit more detail on your stack, the product, and what the backend needs to do. I keep work in reviewable milestones and I'm available for daily updates. I can start right away.
$250 USD in 1 day
7.2
7.2

Hi, I'm a senior developer with 20+ years of experience, Top Rated on Freelancer.com with 1,500+ completed projects and a 5-star record, and I've delivered similar backend systems before, so this is right in my wheelhouse. I'll review the current codebase and requirements, then build the Node.js/Express microservices with CouchDB and MongoDB, setting up REST/GraphQL APIs with proper authentication and error handling. Integration will include DevOps pipelines for deployment, automated testing to catch regressions, and monitoring for uptime and performance. Security and data integrity will be handled with input validation, rate limiting, and encrypted storage. I can start immediately.
$300 USD in 5 days
7.1
7.1

Node.js Backend Lead Engineer — taking ownership from architecture to deployment. You need a senior engineer who can own the Node.js layer, make decisions that hold up under load, and keep the team moving without hand-holding. Here is how I approach it. I will design your Express REST endpoints with structured middleware chains and error contracts so your frontend team never hits an undefined response shape. I will use schema validation at the service boundary in MongoDB — catching data inconsistency bugs in sprint 1, not after they compound. One decision worth making early: if your microservices need to communicate with each other, starting with synchronous REST calls is fine for low concurrency, but it creates tight coupling that becomes a bottleneck fast. I would recommend establishing a lightweight event bus via RabbitMQ from day one so you are not refactoring inter-service communication under pressure later. I will also configure CI/CD with environment-separated deployments on AWS ECS, so rollbacks are a single command rather than a crisis. One problem I often see in Node.js lead engagements: PR review bottlenecks kill sprint velocity. I will own that cadence explicitly. I can begin immediately at USD 300 for a 3-day scoping and foundation sprint. Are your services expected to run as long-lived ECS containers, or is Lambda a viable option given your expected traffic patterns?
$300 USD in 3 days
6.7
6.7

Hi, I lead backend work in Node with Express, on a stack that runs Postgres, Mongo, and Redis behind clean REST APIs. A recent Express and Vue contract came back at 5 stars, with the client noting fast delivery and attention to detail. VueJS / Express JS Developer, 5 stars, full stack JavaScript build. One thing that shapes how I lead a backend: is this greenfield, or are you taking over an existing codebase that needs someone to stabilize and set the patterns? That changes what week one looks like. We've also built an AI driven automation backend on Laravel with Redis and queued workers, so I'm comfortable across API design, caching, and queues. BDAutomation: internal AI workflow engine What is the current state of the code? Adil
$368.50 USD in 7 days
6.9
6.9

Hello!, I am a Florida-based senior software engineer(frontend, backend, ecommerce, etc) with 15+ years of experience building and scaling Node.js, Express, MongoDB/NoSQL, APIs, microservices, and DevOps-ready backend systems. I read your project carefully, and the main goal is clear: you need a backend lead engineer who can own the architecture, keep the codebase clean, and deliver a production-ready Node.js backend that is reliable and easy to extend. My approach: 1) Review the current stack, API flow, and any pain points 2) Define service boundaries and data models 3) Build or clean up the API layer with validation, logging, and error handling 4) Improve deployment flow and reliability 5) Test thoroughly and document the handoff Relevant work includes backend platforms for a logistics dashboard, a SaaS scheduling system, an internal ops API for a retail brand, and a real-time reporting service built with Node.js + MongoDB. Could you please clarify the following questions to help me better understand the project? 1) Is this a greenfield backend build, or an existing Node.js codebase that needs improvement? 2) Do you already have API contracts and a MongoDB schema, or should I help design them too? 3) What is the expected scope for this phase: architecture, full implementation, or ongoing lead support? If you want someone who pays close attention to the details and can lead this properly, I’d be happy to chat and map out the fastest path to a clean result. -James
$600 USD in 3 days
6.6
6.6

Your microservices architecture will create cascading failures if you don't implement proper circuit breakers and health checks between services. Without distributed tracing, debugging production issues across multiple Node services becomes impossible. Quick questions - what's your current strategy for handling service-to-service authentication and rate limiting? And are you planning to run this on Kubernetes or a simpler container orchestration platform? Here is the architectural approach: - NODE.JS + EXPRESS: Build fault-tolerant microservices with Redis-backed queues to prevent message loss during service restarts. - NOSQL MONGO & COUCH: Design sharded database architecture with proper indexing strategies to support horizontal scaling beyond 10M documents. - DEVOPS + API DEVELOPMENT: Implement CI/CD pipelines with automated testing, blue-green deployments, and API gateway patterns for version management. I've led backend teams at 3 fintech companies where we scaled Node microservices from 1K to 500K concurrent users without downtime. Let's schedule a 20-minute technical call to review your current architecture before you commit to a build.
$450 USD in 10 days
7.3
7.3

Hi there, I see the need for a seasoned backend engineer to lead your Node.js development efforts. With robust experience in Node.js and API development, I can effectively drive the architecture of your backend services. My expertise extends across microservices and agile methodologies, ensuring that your project goals are realized efficiently. Your satisfaction is my priority and I guarantee that I will deliver you a high-quality result. Regards, Ali
$250 USD in 10 days
6.4
6.4

Hi, your "BACKEND LEAD ENGINEER" project is right in my wheelhouse. I develop modern JavaScript apps end to end — React/Vue/Next on the front and Node/Express on the back, in TypeScript where it helps. Working with javascript, nosql couch & mongo, agile development, node.js, express js, angularjs, backend development, devops, api development, microservices, I focus on responsive, fast UIs, clean component structure, and reliable APIs — no page-builder shortcuts. I can lock down the scope and key flows first, then ship in reviewable increments. Can we hop on a quick chat to align on your requirements? ⭐ 5.0/5 from a recent client: "Project was delivered before Time with Best professional Knowledge One could ever held. Thanks for the support" Final timeline and cost will be confirmed in chat after a complete understanding and documentation of the project expectations in detail.
$562.50 USD in 8 days
6.5
6.5

Hi, I understand you're looking for a backend lead engineer with Node.js expertise to guide your development. My approach would involve first assessing your current backend architecture and team dynamics. Next, I would focus on establishing clear coding standards, implementing robust testing strategies, and planning for scalable infrastructure. This ensures a solid foundation for future growth and maintainability. My goal is to deliver a well-structured and efficient backend system with minimal disruption to your ongoing projects. I can provide guidance on technical decisions and best practices. Regards, Muhammad Azeem
$500 USD in 3 days
6.5
6.5

With vast experience in full-stack development, my expertise extends to writing clean code and designing maintainable systems. As a Node.js backend lead engineer, I have honed my skills to maximize efficiency and performance, making me a great fit for your project. Over the years, I've had the privilege of working on various projects involving complex API development and integrations with third-party providers, including Stripe, PayPal, Razorpay, Twilio, and SendGrid. As such, I am confident in my ability to create well-functioning REST APIs and GraphQL schemas tailored precisely to your needs. Moreover, my proficiency in Cloud & DevOps (with AWS, Docker, Kubernetes), databases (MySQL, PostgreSQL, MongoDB), E-commerce solutions (Shopify, WooCommerce), and business analytics will ensure that we are leveraging the right tools for this project. Together with my commitment to understanding business requirements first and maintaining constant communication, I am confident we can create the scalable and high-quality solution you're looking for. Let's connect and discuss your project in further detail!
$250 USD in 7 days
5.8
5.8

Hello dear, Greetings from Md. Toriqul Islam! We are a dedicated Web Design & Development team with over 10+ years of industry experience, I’m Engineer Toriqul Islam, an experienced Computer Science & Engineering graduate from (RUET). We specialize in building modern, scalable, and user-friendly digital solutions tailored to business needs. What I Offer We help businesses grow online by delivering: • Clean, modern, and responsive website designs • High-performance and scalable web applications • User-focused UI/UX for better engagement and conversion My Technical Expertise We work across a wide range of technologies, including: • Frontend: HTML5, CSS3, Bootstrap, JavaScript, jQuery, Angular, React • Backend: Node.js, PHP, Laravel, .NET, CodeIgniter, Ruby on Rails, Python • CMS & Platforms: WordPress • Database: MySQL, MongoDB • Mobile Development: React Native, Flutter, and more Why Choose me? ✔️ Clean, optimized, and well-documented code ✔️ Reusable and scalable components ✔️ On-time delivery with complete requirement fulfillment We are confident in our ability to turn your ideas into a powerful digital product. Let’s discuss your project and make it a success. Looking forward to working with you! Best Regards, Md. Toriqul Islam
$250 USD in 2 days
5.7
5.7

As a dedicated Full Stack Web and Mobile App Developer with over five years of experience, I'm confident in my abilities to fulfill the role of your Node.js Backend Lead Engineer. My proficiency in API Development, JavaScript, Node.js, NoSQL Couch & Mongo, aligns perfectly with the requirements of this project. I bring to the table a deep understanding of backend development paired with an unwavering commitment to producing clean, optimized and maintainable code. What makes me invaluable is not just my technical skills but also my passion for what I do. Turning ideas into reality through code is what gets me up each morning and I can't wait to bring that enthusiasm and energy to your project. My extensive portfolio includes successful ventures in business websites, SaaS applications, mobile apps, e-commerce platforms; all augmented by my ability to integrate APIs and manage databases efficiently. Another reason to hire me is my consistent track record of on-time delivery and clear communication. I understand the value of promptness in adhering to project deadlines without compromising quality. Moreover, you can count on me for end-to-end development support - from ideation to deployment and even post-deployment maintenance if required. Let's join our forces for a successful project accomplishment!
$500 USD in 7 days
5.7
5.7

Hello, I am an expert with 15+ years of experience in the technical world, delivering simple to complex websites, e-commerce platforms, membership systems, and custom portals. I always provide clear communication, continued support after delivery, and 100% client satisfaction. I specialize in Node.js development, creating secure, scalable, and high-performance backend systems with RESTful APIs, real-time applications, and database integration (MySQL, MongoDB, etc.). My focus is on building future-ready applications with clean and optimized code. If you are looking for a dedicated Node.js expert who delivers quality, innovation, and timely results, I’d be glad to work on your project.
$250 USD in 7 days
5.5
5.5

Hi, I can lead your Node.js backend and deliver robust, testable microservices using Express, MongoDB and Docker. I built a Node.js microservices backend serving 200,000 monthly users and handled API design, auth and deployments. I work in Agile and take ownership of code quality, CI and incident response. Do you have an existing Node.js codebase to take over? Happy to jump on a quick chat. Ali Zain
$500 USD in 7 days
5.3
5.3

Hi, I have strong experience leading Node.js backend development using Express, REST APIs, microservices, MongoDB, Docker, and modern DevOps practices. I focus on building clean, scalable services with well-structured APIs, automated deployments, and maintainable architecture that teams can extend confidently. I'm comfortable collaborating in Agile environments, reviewing architecture, mentoring developers, and delivering production-ready backend solutions. I'd be glad to discuss how I can contribute as your Backend Lead Engineer.
$650 USD in 28 days
5.4
5.4

Hello there. I hope you are donig well. I have successfully led backend development projects using Node.js, Express, and NoSQL databases, ensuring scalability and performance. My experience with microservices architecture has equipped me to efficiently manage complex systems, making me a strong fit for this role. I understand that you require a skilled Node.js Backend Lead Engineer to develop robust API solutions and optimize backend performance. I will implement best practices in Agile development, ensuring timely delivery and high-quality results that align with your project goals. I will provide high-quality backend solutions tailored to your business needs, focusing on performance and scalability. My approach includes thorough testing, documentation, and seamless integration, ensuring a smooth development process and a final product that exceeds your expectations. Please feel free to reach out to me. I look forward to working with you. Best regards, Billy Bryan
$400 USD in 3 days
5.1
5.1

Kuils River, South Africa
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