The backend is the part of your app that users never see. It saves data, manages logins, and makes every button work. We build it using NestJS, a popular framework made on Node.js and TypeScript.
We can build a new backend from scratch, or fix and upgrade the one you already have. It works for websites, mobile apps, and business software.
Your app stays quick, even when more people start using it.
Secure sign-in, protected user data, and clear access rules.
Grow your product later without having to rebuild it.
We fix bugs, update the code, and keep everything running.
Not sure what your project needs? Tell us your idea in simple words. We will explain the plan in the same way.
More Than 150+ Brands
We are a software development team that plans, builds, and looks after the hidden side of apps: where information is saved, how people sign in, and how different systems talk to each other. Our work helps websites, mobile apps, and business tools run smoothly every single day.
Our engineers write tidy code, test it before every release, and share progress at each step. You will never be left guessing about what is happening with your project. If something needs a change, we say so early and explain why in simple words.
Some clients come to us with a fresh idea. Others have an app that is growing fast, or an old system that has become hard to manage. Whatever your case, tell us the goal. We will suggest a clear way forward that fits your needs and your budget.
NestJS is a free, open-source framework for building the server side of an app. Here is why so many teams, from small startups to large companies, choose it for NestJS backend development.
Powering websites for Netflix, TikTok, Twitch, Nike, and thousands of businesses across the web.
From a small API to a full business system, here is what we build with NestJS. Pick a service to see what is included.
An API is the way one piece of software asks another for information, like a mobile app asking the server for a customer’s orders. We build APIs that are quick, tidy, and simple for other developers to use.
REST APIs for websites and mobile apps
GraphQL APIs for flexible data requests
Links with payment, email, and SMS tools
Clear API guides using Swagger
Input checks and safe error messages
Instead of one big program, we split your product into small services that each do one job, like payments or notifications. When one part gets busy, you grow only that part. If one service has a problem, the others keep running.
One service for each business task
Message queues using RabbitMQ, Kafka, or Redis
Fast service-to-service calls with gRPC
Updates to one service without stopping the rest
Logs and monitoring for every service
Whether it is a website, a mobile app, a SaaS product, or a first version to test your idea, we build the full backend and take it from plan to launch.
Backend for web, mobile, and SaaS products
Live features like chat and instant updates
User sign-up, sign-in, and roles
File uploads, emails, and push alerts
Database setup with PostgreSQL, MySQL, or MongoDB
Big businesses have many users, many teams, and many rules. We build systems that handle that load and keep the code organized, so large teams can work on it together without confusion.
Systems made for large teams and heavy traffic
Code split by business function
Single sign-on and detailed access control
Smooth handling of large amounts of data
Hosting on AWS, Azure, or Google Cloud
Is your current backend slow, messy, or hard to change? We move it to NestJS without losing data and without stopping your business. We also upgrade older NestJS projects to the latest version.
Full review of your current code first
Move done in small steps, one part at a time
Safe transfer of your existing data
Upgrade from older NestJS versions
Testing at each stage so users notice nothing
Not sure how to set up your project, or why it is running slowly? Our engineers look at your code, your plan, or your idea and tell you what to fix, what to keep, and what to do next.
Review of your code and app structure
Advice on database and system design
Checks for speed and heavy-load problems
Security check with a list of risks
A clear report with next steps
Not sure how to set up your project, or why it is running slowly? Our engineers look at your code, your plan, or your idea and tell you what to fix, what to keep, and what to do next.
Review of your code and app structure
Advice on database and system design
Checks for speed and heavy-load problems
Security check with a list of risks
A clear report with next steps
Our developers don’t disappear after handing over the code. They plan, build, test, and look after your backend as if it were their own product. That is why growing teams trust them with the part of the business that must never stop working.
NestJS and TypeScript developers ready to start in just 3 to 5 days
Every package checked before it goes live, so your code stays safe
Talk to your developers directly on Slack
The same developers stay with your project from start to finish
You own all the code from day one, with no lock-in
Developers available during UK, UAE, and US working hours
2-week free replacement if the developer is not the right fit
These are the standard checks our team applies to every project, whatever its size, to keep your app safe, steady, and easy to maintain.
Every request is checked against clear rules before it reaches your app. Wrong or unexpected data is rejected at the door, which keeps your database clean and blocks many common attacks before they cause harm.
We switch on Helmet, a tool that adds protective settings to every response your app sends. These settings help browsers block common tricks, like hidden scripts and fake pages, so visitors stay much safer online.
Users sign in with a secure token that expires after a short time. A second token renews it quietly, so people stay logged in, while a lost or stolen token quickly stops working for good.
We set a limit on how many requests one user can send in a short time. This stops bots and misuse from slowing your app down, so real users always get a fast, steady response.
Every outside package we use is scanned for known security problems before it is added, and again whenever it gets an update. This keeps weak spots from quietly entering your code as your project grows.
Each feature is covered by tests written with Jest that run on every code change. If an update breaks something that worked before, we catch it early, long before your users ever notice a thing.
NestJS runs on the server, so your users never need to install anything. If a device can connect to the internet, it can use an app built on it.
The backend sits behind your website, so every modern browser can use it. Nothing special is needed on the visitor’s side.
One backend can serve your iPhone app, Android app, and website at the same time, so everyone sees the same, up-to-date data.
Your front end and backend are built separately and communicate through APIs. This lets you choose the front-end tools that suit your project or change them later.
Your app can run on a cloud server, inside a container, or on serverless platforms. We configure the hosting option that fits your budget and traffic requirements.
NestJS connects with popular databases, allowing you to keep the database you already use or choose a better fit for your application’s data and access patterns.
35+ tools our NestJS developers use daily, grouped by what they actually do.
The base every project is built on
Where your app stores information
How apps and services talk to each other
Keeping your data and users safe
Catching bugs before launch
Launching and running your app
Picking a backend framework is a big choice. Here is a simple side-by-side look at four popular options, so you can see where NestJS fits and where another tool may suit you better.
| Criteria | NestJS | Express.js | Django | Spring Boot |
|---|---|---|---|---|
| Language | TypeScript (JavaScript also works) | JavaScript (TypeScript optional) | Python | Java |
| Code structure | Clear modules built in | Minimal, you decide the layout | Built-in structure | Strong, well-defined structure |
| Built-in tools | Validation, login guards, testing support | Very few, add packages as needed | Admin panel, login, database tools | Wide set for security, data, and settings |
| Best for | APIs, microservices, growing products | Small APIs and quick prototypes | Content-heavy and data-driven apps | Large enterprise systems |
| Microservices | Built-in support | Manual setup | Possible with extra tools | Strong support |
| Real-time features | WebSockets built in | Through add-on libraries | Through Django Channels | Through Spring WebSocket |
| AI and machine learning work | Limited, connects to AI tools by API | Limited, connects to AI tools by API | Strong, thanks to Python AI tools | Limited |
| Learning curve | Medium, easier if you know Angular | Easy | Easy to medium | Steeper |
These are the six steps we follow on every project, from the first call to long-term support, so you always know what happens next.
We start by learning what your product should do and who will use it. Then we list features, set priorities, and agree on a clear timeline and cost in writing before any code is written.
Our engineers map out how your app will be organized, split into NestJS modules, and plan how data will be stored. A written design with simple diagrams is shared so everyone agrees on it first.
Developers write the code in TypeScript, one feature at a time. Each feature is built as its own module, reviewed by a second developer, and shown to you in demos so you can give feedback.
Every single feature is tested with automated tests, and the whole app is checked for security gaps. We also try heavy traffic to make sure it stays fast when many people use it at once.
We set up your servers, package the app with Docker, and use automated pipelines to release it. The launch is carefully planned with a ready backup option, so your users notice little or no downtime.
After launch, we keep a close watch on your app for errors and slowdowns. Bugs are fixed quickly, tools and packages stay updated, and we add new features whenever your business is ready to grow.
Every project is different, so we offer a few simple ways to work together. Look at each option, choose the one that fits your budget, timeline, and goals, and we will take it from there.
Cost is locked in a fixed-scope model. Ideal when the roadmap is well-defined and you want budget certainty.
Billing
Best For
A dedicated pod you optimise, scale, and augment your in-house team with. Best for ongoing product development.
Best suited for teams that need predictable sprint velocity.
Billing
Best For
Model Fit
In this model, there is no fixed time or budget. You will pay for the actual hours worked or materials completed and used.
Billing
Best For
The following are the benefits of NestJS for startups and for enterprise NestJS development alike.
NestJS comes with a command-line helper that creates ready-made files for each new feature, plus common needs like logins and validation. Your team spends less time on setup, so products reach customers sooner and ideas get tested quickly.
The framework follows patterns many developers already know, especially those who have worked with Angular. New team members get up to speed quickly, and clear official guides answer most questions, which keeps projects moving when your team changes.
Built on Node.js, NestJS can work on many requests at the same time without waiting for each one to finish. Your app stays responsive during busy hours like sales or launches, so customers do not get frustrated and leave.
NestJS works with the database, payment service, and hosting you already like, and it can run on Express or the Fastify engine. You are never locked into one vendor, so changing direction later stays simple.
The framework itself is free and open source, so there are no license fees. Clean, predictable code is also cheaper to fix and extend later, which means fewer expensive rewrites as your business and its needs change.
A large, active community keeps NestJS well supported. You can find guides, ready-made add-ons, and quick answers to common problems, so your developers rarely get stuck and your project avoids long, costly delays down the road.
NestJS is updated regularly by a dedicated team of maintainers and backed by sponsors. That gives businesses confidence that the tool will not be abandoned, so the product you build today can stay supported for years.
Because NestJS follows clear, shared conventions, work is easy to split between developers and easier to estimate. Businesses get more reliable delivery dates and budgets, and fewer unpleasant surprises in the middle of the project.
Our team uses AI tools at every stage of NestJS work to get more done with fewer delays. Every piece of AI-written code is still read, tested, and approved by an engineer before it reaches your project.
AI helps create the starting files for NestJS modules, controllers, and services alongside the Nest command-line tool. Developers spend less time on repeated setup and more time on the features that matter to your business.
AI-assisted checks catch common mistakes, like missing input rules or unused code, before a teammate reads the changes. Reviewers can then focus on logic and design, which means fewer rounds of corrections.
AI drafts Jest tests for services and controllers while features are built. Developers check and improve them, so about 70% of the code is already covered by tests before the QA stage even begins.
Added together, the savings in setup, review, testing, and documents bring down the full project timeline by around 30%. Your scope stays the same, and your app reaches users sooner.
Suggestions and quick explanations appear right inside the editor, helping developers write TypeScript and NestJS code faster. Every suggestion is read and approved by an engineer.
First drafts of Jest tests are created for services and controllers. Developers then check them, fix gaps, and add cases that match your real business rules.
AI flags common risks early, such as missing input checks or unsafe packages, while features are being built, not only before launch. Any finding is reviewed by an engineer.
While the site is still being built, AI checks whether people using screen readers or keyboard navigation can use it properly. Fixing this early means no last-minute scramble before launch.
All AI-generated NestJS modules, controllers, services, DTOs, Guards, and Bull processors are reviewed, unit-tested with Jest locally, and owned by a named Ahex NestJS a named Ahex engineer before it ships. We use AI to move faster — not to skip the architecture phase, ship a controller without a Guard, or merge a PR that drops Jest coverage below 80%.
Below are the problems teams most often run into while working with NestJS. Next to each one, you will find the practical fix we use to solve it.
Problem
Two parts of the app need each other to start, so neither can load first. The app crashes on startup with a confusing “cannot resolve dependency” message, and new developers lose hours finding the cause.
Solution
We review the module layout first and move shared logic into its own module, so the loop disappears. Where a link must stay, we use Nest’s forwardRef tool, and linting checks catch new loops early.
Problem
The app accepts whatever data is sent to it. Missing fields, wrong types, or extra values slip through, causing random errors, messy database records, and sometimes security holes that nobody notices until a customer complains.
Solution
We define strict rules for every request using DTOs and Nest’s ValidationPipe. With whitelist mode on, unknown values are removed or rejected, and clear error messages are sent back, so only clean data reaches your database.
Problem
One big task, like creating a large report or resizing images, can hold up everyone else. Because Node.js handles work in a single line, other users wait, pages feel frozen, and the app seems slow.
Solution
We move heavy jobs out of the main flow using background queues such as BullMQ, or separate worker processes. Users get an instant reply, the job finishes quietly in the background, and a notification tells them when it is done.
Problem
A single page can end up asking the database dozens of small questions instead of one smart one. Everything works in testing, but once real users arrive, pages load slowly and the database server struggles.
Solution
We check database activity with logs and query tools, then combine the many small requests into one, using joins and proper indexes. Frequently used data is saved in Redis, so repeat visitors get fast answers.
Problem
Splitting a big app into small services sounds neat, but problems appear very fast. Services fail to reach each other, messages get lost, and one slow service can drag all the others down with it.
Solution
Our NestJS microservices development team uses message queues like RabbitMQ or Kafka, so a message waits safely if a service is busy. We add retries, time limits, and health checks, so one failure stays contained.
Problem
Frameworks and packages keep changing. When a new NestJS version arrives, older code can stop working, and teams delay updates for many months, leaving the whole app open to bugs, security risks, and unsupported tools.
Solution
With NestJS maintenance and support, we read the release notes, test each upgrade in a safe copy of your app first, and fix breaking changes step by step, so updates reach users with few surprises and little downtime.
From small tools to large platforms, these are the kinds of products our team builds with NestJS. Each one is made to fit the way your business works.
We build the connection point between your apps and your data. These APIs send and receive information quickly and safely, work with websites, mobile apps, and partner tools, and come with clear guides for any developer who joins later.
Big products are split into small, independent services, such as payments, users, and notifications. Each part can be updated or grown on its own, so one busy or broken service does not bring the whole product down.
We create apps where information updates the moment something happens, like live chat, order tracking, notifications, and dashboards. Users see changes instantly, without having to refresh the page or wait for the next update to arrive.
We build the backend for software that many companies or users share, with separate accounts, roles, and plans for each. Data stays private to each customer, and new features can be released without disturbing anyone’s work.
We develop the engine behind online stores: products, carts, orders, stock, and payments. It stays quick during sales and busy seasons, and it connects with payment gateways, delivery services, and the tools your team already uses.
Your iPhone app, Android app, and website can all share one backend. It handles sign-ins, saves user data, sends push alerts, and keeps everything in sync right away, so every user sees the same, up-to-date information.
These are the industry standards and rules we build NestJS apps around. Our team plans for them from the first week, so they are part of your app from the start, not added at the end.
OWASP Top 10 is a trusted list of the most serious web security risks, such as broken access control and injection. We build and test every NestJS app against it, so common weak spots are closed before launch.
GDPR is the European Union’s data privacy law. It gives people control over their personal data. We build features like consent records, data export, and deletion on request, so your app can respect users’ rights.
HIPAA is a U.S. law that protects patients’ health information. We build apps with strict access rules, encrypted data, and activity records, so only the right people can see sensitive medical details and every access can be traced.
PCI DSS is the security standard for businesses that handle card payments. We keep card details away from your own servers by using trusted payment providers, and we protect the rest of the payment flow with encryption and access controls.
ISO/IEC 27001 is a global standard for managing information security in an organization. Our development process follows its core ideas, such as risk checks, access limits, and written procedures, which helps companies that need to pass vendor or audit reviews.
The OpenAPI Specification is the common way to describe how an API works. We document every endpoint in this format using Swagger, so any developer or partner can understand it, test it, and connect to it without guesswork.
As a NestJS development company, we build backends for businesses across many sectors. Here are the industries we work with, and what we build for each one.
Clinics, labs, and fitness brands need apps that keep personal data safe and respond fast. We use NestJS to build patient portals, booking systems, and health tracking backends with strict access rules, so each user sees only their own records.
Property platforms deal with thousands of listings, photos, and enquiries at the same time. We build NestJS backends that search listings quickly, handle agent and buyer accounts, and send instant alerts when a matching property goes live.
Many factories still run on old systems that are slow and hard to change. With our NestJS migration services, we move them to a modern backend that tracks stock, orders, and machine data in one place without halting daily work.
Banks and finance apps need speed, accuracy, and strong security. Our NestJS API development work covers secure payments, account data, and reports, with clear records of every action, so your team and your auditors can follow what happened.
Booking apps must show live availability and prices to many people at once. We build NestJS backends that manage rooms, flights, and tours, avoid double bookings, and connect with partner systems so your offers always stay up to date.
Streaming and media apps get sudden waves of visitors, like a live event or a new release. We use NestJS to handle user accounts, content lists, and live updates, and we split heavy tasks so the app stays smooth.
Software companies need a strong base to build products on. We build NestJS backends for SaaS tools, internal platforms, and developer products, with tidy code, clear API guides, and tests, so your own team can grow the product easily.
Online stores face heavy traffic during sales and need stock, orders, and payments to stay correct. We build NestJS backends that update inventory instantly, process payments safely, and connect with delivery and marketplace tools you already use.
Learning platforms serve students, teachers, and admins, each with different needs. We build NestJS backends for course content, progress tracking, and live classes, with simple sign-in and roles, so thousands of learners can study at once.
Known for building innovative technology solutions across diverse industries, we’ve received multiple awards and recognitions from top B2B platforms.
Clutch 1000 Company – 2025
Recognized by Clutch among the top 1000 global companies for excellence in service and delivery in 2025
Clutch Global Award Winner – Fall 2024
Awarded by Clutch as a Global Leader for outstanding performance and client satisfaction in Fall 2024
Clutch Global Award Winner – Spring 2024
Recognized by Clutch as a Global Leader for delivering high-quality solutions and consistent client success in Spring 2024
Clutch Champion – Fall 2024
Honored by Clutch as a Champion for sustained excellence, industry leadership, and exceptional client feedback in Fall 2024
Clutch Champion – Spring 2024
Honored by Clutch as a Champion for sustained excellence, industry leadership, and exceptional client feedback in Fall 2024
Ahex Technologies Pvt. Ltd. developed a client-facing mobile app with geolocation features as well as an intranet portal for employees. They provide ongoing support for any updates that need to be made.
An enterprise-grade AI Voice Assistant platform designed to automate, govern, and optimize every guest interaction across single and multi-property hotel environments.
Southwest Funding is a Dallas-based mortgage lender founded in 1993 — serving 50,000+ home loans across 29 states with Conventional, FHA, VA, and USDA programs through 1,200+ licensed loan officers.
Book a free scoping call with a senior NestJS engineer. We'll review your API requirements, module architecture, async workload inventory, database selection, real-time feature requirements, and deployment target — and give you an honest assessment of what a NestJS greenfield build, microservices migration, or codebase audit engagement would deliver. Tsconfig, and Zod coverage — and give you an honest migration or architecture recommendation. No upselling, no sales pitch.
The frontend is the first thing users see. They interact with it on mobile apps, software, and websites. Because of
Frontend development is undergoing a transformation and it’s not just about new frameworks or fancier animations. It’s about AI in
We build clean, fast Angular front ends that connect smoothly to your NestJS backend. Both tools share TypeScript and similar ideas, so your team works in one style, shares code types, and ships much faster.
We create scalable server programs on Node.js, the engine that runs NestJS. It works well for apps with many users, and we use it for tools, scripts, and services that sit beside your main backend.
We set up your app on AWS, Azure, or Google Cloud with the right size and cost. Your backend grows when busy and shrinks when quiet, so you pay only for what you really use.
We connect your backend with outside tools such as payment gateways, CRMs, email services, and shipping partners. This saves your team from manual work, keeps data matching across systems, and handles errors from outside services
Explore Integration →
Our designers plan simple screens and clear user journeys before the first line of code. They work with the backend team to make sure every button, form, and page matches what your system can deliver.
We review your NestJS code and packages to find weak spots before attackers do. The review ends with a report that ranks each risk by seriousness and explains how to fix it in plain words.
Explore Security →
It depends on the features you need. A simple API can be ready in a few weeks, while a bigger platform with many connections takes a few months. After we review your idea, we share a clear timeline in writing.
The cost depends on the number of features, the tools you need to connect, the size of the team, and your deadline. After a short discussion, we give a clear estimate so you know the price before work begins.
Yes. We can join your team, review code together, and share clear notes so everyone stays on the same page. If you want, we also guide your developers on good NestJS habits.
A short description of your goal is enough to begin. If you have designs, existing code, or documents, please share them too. We handle the technical questions and explain every next step in simple words.
We move one part at a time while your current app keeps running. The old and new parts work together during the move, and each stage is tested before it goes live, so your users are not disturbed.
They help when you are unsure how to plan a project, when your app is slow, or when you want a second opinion on your code. You receive a clear report that shows what to fix first.
It covers bug fixes, security updates, version upgrades, and regular checks on speed and errors. You can also request small changes or new features whenever your business needs them.
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