Node.js Development Company for Fast APIs and Real-Time Apps
We build Node.js and TypeScript back ends for mobile apps, SaaS products and real-time features: REST and GraphQL APIs, chat, live tracking, payments and AI integrations, deployed on AWS, Azure or GCP.
- TypeScript APIs with NestJS or Express
- Real-time chat, tracking and alerts
- Back ends for Flutter and React apps
- Serverless and container deployment
- Node.js
- TypeScript
- NestJS
- Express
- Fastify
- GraphQL
Get a free Node.js Development estimate
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One language across your stack, fewer handoffs
- API back ends for Flutter and React Native apps
- Chat and messaging platforms
- Delivery and ride tracking systems
- SaaS back ends with Next.js front ends
- Webhook and integration hubs
- AI assistants and agent back ends
Ecomsolver is a Node.js development company that builds the server side of modern products. We have delivered multiple Flutter apps backed by Node.js APIs, so we know what mobile and web front ends need from a back end: predictable endpoints, fast responses, push notifications and solid authentication.
Node.js handles many concurrent connections well, which makes it a strong fit for chat, live dashboards, delivery tracking, notifications and API gateways. We write it in TypeScript with NestJS or Express, validate every input, and structure code so features can be added without untangling callbacks.
Pair it with React, Next.js or React Native and your whole team works in one language. You get a free consultation, a fixed written quote, weekly demos and full ownership of the code.
We fix it, fine-tune it, then add AI and automation.
Most clients come to us with something already running: a store that is slow, an app that crashes, code nobody wants to touch. We stabilise it first, then add the AI features that save time and earn money.
Fix
A code and infrastructure audit of your Node.js product, then the fixes that matter most.
- Bugs, crashes and broken integrations
- Security patches and outdated versions
- Code nobody can maintain
Fine-tune
Make it fast, stable and easy to change, without a risky rewrite.
- Speed, caching and database tuning
- Tests, CI/CD and monitoring
- UX fixes where users get stuck
Add AI & automation
Practical AI built into the Node.js product you already have.
- AI search and assistants over your own data
- Content, document and support automation
- AI agents that work with your tools
Node.js development services
Every engagement starts with a free consultation and a written, fixed quote.
REST and GraphQL APIs
TypeScript APIs built with NestJS, Express or Fastify, with OpenAPI documentation, JWT or OAuth authentication, input validation and rate limiting for public and mobile clients.
Real-time features
Chat, live order and driver tracking, collaborative editing and instant notifications using WebSockets, Socket.IO and Redis pub/sub, designed to stay responsive under load.
Mobile app back ends
Complete back ends for Flutter and React Native apps: user accounts, push notifications through Firebase, media uploads, payments, admin APIs and analytics events.
Microservices and serverless
Split heavy workloads into services on Docker and Kubernetes, or run event-driven functions on AWS Lambda, with queues such as SQS, RabbitMQ or BullMQ.
AI and LLM integrations
Node.js services that call OpenAI or Anthropic models, stream responses to the front end, run retrieval over your documents and orchestrate AI agents with tool calls.
Node.js performance and upgrades
Profile slow endpoints, fix memory leaks, move old callback code to async/await and TypeScript, and upgrade to a current LTS release with updated dependencies.
Plan your Node.js back end with us
Tell us what your app needs to do. We reply within 24 hours with a free consultation slot and a written fixed quote.
- 100% free
- No obligation
- Reply within 24 hours
Why build your back end with us
Shared TypeScript types
Types shared between API and front end catch mismatches at build time, which means fewer production bugs and faster feature work.
Built for real-time load
Event-driven design, connection pooling, caching and horizontal scaling keep chat, tracking and notifications fast as your user count grows.
Mobile-ready from the start
Our experience pairing Node.js with Flutter apps means pagination, offline sync, push notifications and versioned APIs are planned, not patched in.
Cloud and CI/CD included
Automated tests, linting and deployment pipelines on GitHub Actions push every change to staging and production on AWS, Azure or GCP safely.
- Node.js
- TypeScript
- NestJS
- Express
- Fastify
- GraphQL
- Socket.IO
- PostgreSQL
- MongoDB
- Redis
- Prisma
- Docker
- AWS Lambda
- GitHub Actions
From first call to launch, with no surprises.
Clear milestones, weekly demos and a fixed price agreed before any work starts.
Requirements and API design
We map users, data, integrations and real-time needs, then draft the API contract so front-end and back-end work can run in parallel.
Architecture and quote
You get a written plan covering database, hosting, scaling approach and third-party services, with a fixed quote split into milestones.
Iterative build
Endpoints and services are delivered in short sprints with automated tests, documented in Swagger and demoed weekly against a live staging environment.
Load and security testing
We load-test busy endpoints and WebSocket channels, check authentication and access rules, and scan dependencies before release.
Deploy and monitor
CI/CD deploys to your cloud account with logging, metrics and alerts, and we provide post-launch support for fixes and new features.
What clients say about working with Ravindra and the team.
Verified reviews from Clutch, GoodFirms, LinkedIn and long-term clients in the USA, UK, Australia, Europe and India.
“I've been working with Ravindra and the Ecomsolver development team consistently for several years now and will continue to do so. During this time, the team has worked across the Magento, Shopify and WordPress platforms and on everything from small changes to full website builds. Throughout this period the team has continued to provide excellent service and inventive, skillful solutions…”
“We've increased sales by 20% thanks to their work.”
Clutch summary: Ecomsolver provides ongoing web development services and support for a Magento website, adding extensions and troubleshooting and fixing bugs as needed. Ecomsolver's ability to maintain an evolving, complex e-commerce site is critical to the…
Founder, Crown Bees · Woodinville, WashingtonMagento development & support
“I recently had the pleasure of working with Ravindra Saini on the redesign and refinement of my website, CulturalConfidence.com, and I couldn't be more pleased with the results. Ravindra brought both technical skill and a responsive, collaborative attitude to the process. He implemented a range of updates with care, from visual improvements to functional adjustments, and always remained receptive to…”
CEO & Cultural Expert, Cultural ConfidenceWebsite redesign“Ravindra is one of the absolute best Magento developers I've hired and worked with over the past 3 years and just a pleasure to work with! If you are in need of integrating the fastest Magento product import process available this is your guy! He's very professional and his English communication skills are perfect. If you are on Magento or…”
AVP, Web Marketing Manager, AXOS BankMagento development“We're impressed with their quality of work.”
Clutch summary: Ecomsolver Pvt. Ltd. has developed an e-commerce website for a custom uniforms company. The team has built and maintained the client-requested Magento features. Ecomsolver Pvt. Ltd. has helped the client see success in their…
President, WearForm · Houston, TexasMagento e-commerce development“5* What an amazing developer. I have been communicating with Ravindra over the last few days and his service he delivered has been exemplary brilliant. Outstanding service, amazing value, great product and he have made every effort to go above and beyond for my needs. Ravindra listened to my needs, explained everything and gave support all the way through. Ravindra…”
“I could always depend on them when something needed to be done quickly.”
Clutch summary: Ecomsolver Pvt. Ltd. fixed technical issues in a sophisticated e-commerce site. They also created custom navigation functionality and an online catalog. The enhanced site helped double sales, thanks to Ecomsolver's technical expertise. Their reliability,…
Technical Lead, AP OnderdelenCustom Magento development“Their breadth of knowledge exceeded our expectations.”
Clutch summary: Ecomsolver Pvt. Ltd. provided website support for an e-commerce platform. They upgraded the client's Magento website from version 4.4.2 to version 4.4.7-p3 and updated their existing and depreciated plug-ins. Ecomsolver Pvt. Ltd. delivered a…
Sales Manager, Streamaster Australia · SydneyMagento upgrade & support“We have worked with Ecomsolver for the past 3 years in a steady capacity. Our magento website (www.crownbees.com) has been maintained, upgraded, and modified by Ecomsolver. We're are in the middle of rebuilding our website for Magento 2, and rely upon their team to ensure all extensions function and work as developed. We are extremely pleased with their work. Ravindra,…”
Owner, Crown Bees · Woodinville, WashingtonMagento maintenance & Magento 2 rebuild“As someone without any experience in creating a webpage, it was important to me to be able to work with an expert. Ravindra is not only an expert at web design and creation, but also a very smart, patient and professional person. The project was completed faster than expected, and the site looks even better than I imagined. It was…”
Website design & development“They would give you exactly what you want and expect.”
Clutch summary: A GIS data service provider tapped Ecomsolver Pvt. Ltd. to update their e-commerce site from Magento 1 to Magento 2. They worked closely with the client to upgrade and refresh the web app. Ecomsolver…
CEO & Founder, USLandGrid · Denver, ColoradoMagento 1 to Magento 2 migration“Ravindra Saini is a very skilled professional. We have developed a few projects together and I really enjoyed working with him. He proved to have a deep knowledge of website design and building on multiple platforms, solved all the problems in a fast and effective way, and showed a big availability to accommodate client's demands and needs. I recommend Ravindra…”
Senior engineering, with the safeguards that make outsourcing safe.
9+ years as Ecomsolver Pvt. Ltd., building and maintaining software for clients in the USA, UK, Europe, Australia and India. Rated 5.0 on Clutch and 4.8 on GoodFirms.
Pay per milestone
You never pay for work you have not seen and approved.
You own everything
Full source code, designs and accounts are transferred to you. No lock-in.
NDA before you share
We sign your NDA before you tell us about your idea. Your IP stays yours.
Full transparency
Weekly demos, a shared task board and direct access to your developers.
Your time zone
Overlapping hours with the USA, UK, Europe, Middle East and Australia.
Senior engineers
Your project is built by experienced developers, not trainees.
Node.js Development: frequently asked questions
Ask us on WhatsApp. A real person replies, usually within minutes during working hours.
Ask on WhatsAppWhen is Node.js the right choice for a back end?
Node.js is a strong fit for APIs, real-time features such as chat and tracking, and products where the front end already uses JavaScript or TypeScript. It is less ideal for heavy number crunching, where Python or Java may suit better. We recommend a stack based on your workload during the free consultation.
What does a Node.js development company deliver beyond code?
As a Node.js development company, we deliver the API, database design, API documentation, automated tests, CI/CD pipeline and cloud setup in your own account. You also get weekly demos, direct developer access, an NDA and full code ownership, followed by post-launch support so the system stays healthy after release.
Can you build the back end for our existing Flutter or React app?
Yes. We have built several Node.js back ends for Flutter apps and work with React and React Native front ends regularly. If your app already exists, we review its data needs and current API, then design endpoints that fit. We can also take over an existing Node.js back end and improve it.
Do you use TypeScript or plain JavaScript?
We default to TypeScript for new Node.js projects because it catches errors early and makes large codebases easier to maintain. If you have an existing JavaScript codebase, we can work in it as is or migrate it to TypeScript gradually, file by file, without stopping feature work.
How do you handle scaling and hosting?
We design stateless services that scale horizontally behind a load balancer, use Redis for caching and sessions, and move slow work to queues. Hosting is set up in your AWS, Azure or GCP account using containers or serverless functions, depending on traffic patterns and budget, with monitoring and alerts included.