Technologies Web, mobile, SaaS & cloud tech stack

Web, mobile, SaaS & cloud tech stack

Technologies we use to build modern web, mobile & SaaS products.

Q: What if we are already using a different framework than React, Next.js or Flutter?

That is fine. Our preferred stack is React/Next.js on the web and Flutter for mobile, but we can maintain and gradually transition from other frameworks. The key question is whether your current stack is still a good fit for your roadmap, hiring market and performance needs.

Q: How do you decide between Laravel, Node.js / Nest.js and other backend options?

We look at your domain, team and roadmap first. Laravel is great for fast-moving products with strong conventions and a PHP background. Node.js / Nest.js fits well when you want a TypeScript-first stack across frontend and backend. Sometimes the right answer is to keep a stable legacy backend and wrap it with new APIs.

Q: Can you help us gradually migrate from legacy CodeIgniter or older PHP apps?

Yes. For many teams, an immediate full rewrite is too risky. We usually start by adding tests and small refactors to the existing CodeIgniter/PHP codebase, then introduce new modules in Laravel or Nest.js alongside the legacy stack, migrating piece by piece instead of breaking everything at once.

Q: Which databases and cloud providers do you usually recommend?

For most SaaS and internal tools, we lean on PostgreSQL or MySQL/MariaDB, hosted on AWS or similar cloud providers. The final choice depends on your existing infrastructure, team skills, compliance requirements and budget. We avoid exotic tools unless there is a very clear benefit.

Q: Will we be locked into a specific technology or vendor with this stack?

Our goal is to avoid lock-in where possible. We prefer widely adopted open-source tools, clean API contracts and infrastructure that can be moved between providers. We also document the architecture and keep the codebase understandable so your own team or another partner can work with it later.

From React.js frontends and Node.js / Laravel backends to Flutter apps and WordPress, QalbIT focuses on a practical, well-supported tech stack. That means your product is easier to scale, maintain and hand over to future teams.

Discuss your tech stack View technologies by category

Typically responding within 24–48 hours. Share your current stack, challenges and timelines.

Tech stack snapshot

Core focus: Custom web, mobile & SaaS products
Frontend: React.js & modern JavaScript
Backend & APIs: Node.js, Nest.js, Laravel
Mobile & CMS: Flutter, WordPress, headless CMS

We start by reviewing your goals, constraints and any existing systems, then recommend a practical, future-proof tech stack rather than forcing a one-size-fits-all choice.

Our web, mobile & cloud tech stack at a glance

We deliberately keep our stack focused around proven technologies like React.js, Node.js, Nest.js, Laravel, Flutter and WordPress – so your product is easier to scale, maintain and hire for in the long run.

Each layer below links to more detail and specific technologies. Combine them into a stack that fits your product: frontend, backend, mobile, CMS, cloud & integrations – guided by one accountable team at QalbIT.

Frontend & UI layer

React-based frontends for web apps, dashboards and marketing sites.

Frontend

React.js for SPAs, dashboards & portals
Component-driven design systems
Responsive, accessible UI patterns

View related technologies → Layer

Backend & APIs

Node.js, Nest.js and Laravel powering secure, scalable APIs and business logic.

Backend & APIs

API-first REST & GraphQL backends
Multi-tenant SaaS architectures
Queues, jobs & background processing

View related technologies → Layer

Mobile & cross-platform

Flutter apps that run smoothly on both iOS and Android from a single codebase.

Mobile & cross-platform

Flutter for iOS & Android
Shared UI & business logic
Faster iteration and lower total cost

View related technologies → Layer

CMS & content platforms

WordPress and headless setups for content-heavy and marketing experiences.

CMS & content

Marketing websites & blogs
Headless CMS with custom frontends
Editorial workflows that stay simple

View related technologies → Layer

Legacy, integration & migration

Stabilise and gradually modernise existing systems like CodeIgniter or older stacks.

Legacy & migration

Health checks for existing apps
Step-by-step refactors instead of rewrites
Integrations with new services & APIs

View related technologies → Layer

Frontend technologies for modern web apps

We use React.js and a modern frontend toolchain to build fast, accessible interfaces for SaaS dashboards, internal tools and marketing sites. Component-driven UI makes it easier to iterate without breaking core flows.

Frontend work is typically paired with our backend and API development services, so UX, performance and data models stay aligned – from design system tokens to the API responses your UI consumes.

React.js Development

High-performance, component-based frontends built with React.js.

Frontend & UI

react-use-cases
Where React.js is usually the right fit
React.js use cases we most often deliver

View React.js details → 01

Next.js Development

Full-stack React applications with Next.js.

Frontend & UI

next-use-cases
Where Next.js is usually the right fit
Next.js use cases we most often deliver

View Next.js details → 02

Tailwind CSS Development

Utility-first UI development for products that need consistency and speed.

Frontend & UI

tailwind-use-cases
Where Tailwind CSS is usually the right fit
Tailwind CSS use cases we most often deliver

View Tailwind CSS details → 03

Backend & API technologies for scalable systems

We use Node.js, Nest.js, Laravel and related tools to design secure, API-first backends. From multi-tenant SaaS platforms to real-time integrations, the goal is predictable performance and clean domain models that are easy to evolve.

Backends are designed with testing, observability and deployment in mind. We align architecture with your product stage and traffic profile – instead of over-complicating things with patterns you do not need yet.

Node.js Backend Development

API-first Node.js and NestJS backends for SaaS, mobile and web products.

Backend & APIs

nodejs-use-cases
Where Node.js is usually the right fit
Node.js use cases we most often deliver

View Node.js details → 01

Typical patterns: REST/GraphQL APIs, background workers & queues, multi-tenant SaaS, integrations and reporting.

NestJS Backend Development

Structured, TypeScript-first backends built with NestJS.

Backend & APIs

nestjs-use-cases
Where NestJS is usually the right fit
NestJS use cases we most often deliver

View NestJS details → 02

Typical patterns: REST/GraphQL APIs, background workers & queues, multi-tenant SaaS, integrations and reporting.

Laravel Development

Custom web apps, SaaS platforms and APIs built on Laravel.

Backend & APIs

laravel-use-cases
Where Laravel is usually the right fit
Laravel use cases we most often deliver

View Laravel details → 03

Typical patterns: REST/GraphQL APIs, background workers & queues, multi-tenant SaaS, integrations and reporting.

Mobile app & cross-platform technologies

We use Flutter to ship high-quality mobile apps for iOS and Android from a single codebase. The goal: native-feeling experiences, predictable performance and a stack that is practical to maintain over the long term.

Mobile projects are typically connected to custom APIs, admin portals and analytics, so your app is not an isolated build. We keep the mobile layer aligned with backend, DevOps and product strategy from day one.

Flutter App Development

Cross-platform mobile apps with a single Flutter codebase.

Mobile & cross-platform

flutter-use-cases
Where Flutter is usually the right fit
Flutter app use cases we most often deliver

View Flutter details → 01

Typical use cases: MVPs, internal tools, customer apps and companion mobile experiences layered on top of your existing systems.

Android App Development

Native Android applications built with Kotlin and modern Android tooling.

Mobile & cross-platform

android-use-cases
Where native Android is usually the right fit
Android app use cases we often deliver

View Android details → 02

Typical use cases: MVPs, internal tools, customer apps and companion mobile experiences layered on top of your existing systems.

React Native App Development

Cross-platform iOS and Android apps with React Native.

Mobile & cross-platform

reactnative-use-cases
Where React Native is usually the right fit
React Native use cases we commonly see

View React Native details → 03

Typical use cases: MVPs, internal tools, customer apps and companion mobile experiences layered on top of your existing systems.

CMS & content platforms we work with

From corporate sites and blogs to content hubs, we use WordPress and headless setups where they make sense – and pair them with custom frontends or backends when you need more than a basic theme.

We focus on practical CMS implementations: fast, secure and easy for non-technical teams to update. When your needs grow, we can extend your CMS with APIs, custom plugins or a separate React/Next.js frontend.

WordPress Development

Custom WordPress and WooCommerce development that goes beyond basic themes.

CMS & content

wordpress-use-cases
Where WordPress is usually the right fit
WordPress use cases we most often deliver

View WordPress details → 01

Typical use cases: marketing sites, blogs, content hubs and landing pages connected to custom backends or SaaS products.

Legacy, integration & supporting technologies

Beyond core frontend and backend frameworks, we also work with the underlying pieces that keep your product stable – databases, cloud platforms, typed JavaScript and older stacks that still run critical workflows.

We can stabilise existing applications (for example legacy PHP or CodeIgniter), plan gradual migrations to Laravel or modern Node/Nest.js, and at the same time look after your PostgreSQL/MySQL databases, AWS infrastructure and integrations.

TypeScript Development

Typed JavaScript for safer, more maintainable applications.

Legacy & supporting stack

typescript-use-cases
Where TypeScript adds the most value
TypeScript use cases we most often deliver

View TypeScript details → 01

Typical scenarios: keeping critical legacy apps stable, planning migrations, tuning databases, and aligning AWS/cloud setups with how your product actually runs.

PostgreSQL Development & Consulting

Robust relational databases for SaaS, analytics and business-critical systems.

Legacy & supporting stack

postgresql-use-cases
Where PostgreSQL shines
PostgreSQL use cases we most often deliver

View PostgreSQL details → 02

Typical scenarios: keeping critical legacy apps stable, planning migrations, tuning databases, and aligning AWS/cloud setups with how your product actually runs.

MySQL Development & Optimisation

Reliable relational databases for web, SaaS and e-commerce applications.

Legacy & supporting stack

mysql-use-cases
Where MySQL is usually a good fit
MySQL use cases we most often support

View MySQL details → 03

Typical scenarios: keeping critical legacy apps stable, planning migrations, tuning databases, and aligning AWS/cloud setups with how your product actually runs.

AWS Cloud Solutions & DevOps

Practical AWS architectures, migrations and DevOps for web and SaaS products.

Legacy & supporting stack

aws-use-cases
Where AWS is usually the right fit
AWS use cases we most often deliver

View AWS details → 04

Typical scenarios: keeping critical legacy apps stable, planning migrations, tuning databases, and aligning AWS/cloud setups with how your product actually runs.

CodeIgniter Development & Modernisation

Stabilise, extend or migrate your legacy CodeIgniter application safely.

Legacy & supporting stack

codeigniter-use-cases
Where CodeIgniter shows up most often
CodeIgniter use cases we typically handle

View CodeIgniter details → 05

Typical scenarios: keeping critical legacy apps stable, planning migrations, tuning databases, and aligning AWS/cloud setups with how your product actually runs.

Approach

How we choose the right tech stack for your product

Instead of pushing a trendy framework, we match technologies to your domain, constraints and roadmap. The outcome is a stack that is realistic to build, maintain and hire for – not just something that looks good on a slide.

Step 01

Understand your product & constraints

We start with your business model, users, internal team and current systems – not with a pre-selected framework.

Clarify goals, domain and key user journeys
Map current stack, integrations and data sources
Capture constraints: budget, timelines, hiring market

This step ensures we are aligning technology choices with your roadmap, risk tolerance and team – not just with our internal preferences.

Step 02

Map architecture & integration needs

We shape an architecture that fits how your product actually works today – and how it is likely to evolve.

Decide on API-first, monolith or modular approach
Identify critical integrations and data flows
Consider security, compliance and scalability needs

This step ensures we are aligning technology choices with your roadmap, risk tolerance and team – not just with our internal preferences.

Step 03

Propose a pragmatic tech stack

We recommend a stack based on proven tools we use daily – React/Next.js, Node/Nest.js, Laravel, Flutter, WordPress and more.

Select frontend, backend, mobile, DB and cloud pieces
Prefer technologies with solid communities & support
Avoid over-engineering for early-stage products

This step ensures we are aligning technology choices with your roadmap, risk tolerance and team – not just with our internal preferences.

Step 04

Validate, iterate & plan handover

We validate stack choices against your roadmap, risk profile and internal team capabilities.

Review trade-offs with you in plain language
Align on roadmap, milestones and non-goals
Plan future hiring and smooth handover from day one

This step ensures we are aligning technology choices with your roadmap, risk tolerance and team – not just with our internal preferences.

Example stacks

Sample tech stacks for common project types

These examples show how we typically combine React/Next.js, Node/Nest.js, Laravel, Flutter, WordPress, PostgreSQL, MySQL and AWS into practical stacks. The exact mix is always adjusted to your product, team and constraints.

Stack 01

B2B SaaS platform

Multi-tenant SaaS with subscriptions, admin backoffice and integrations.

Typical stack

React / Next.js · Nest.js or Laravel · PostgreSQL · Redis · AWS

Multi-tenant architecture and role-based access
Subscription billing, invoicing and reporting
Admin portal + customer-facing app + APIs

View relevant services → · Explore technologies

Example stack

Stack 02

Customer portal or marketplace

Self-service portal for customers, partners or vendors with workflows and payments.

Typical stack

Next.js · Node.js / Nest.js · PostgreSQL or MySQL · Redis · AWS

Account creation, onboarding and KYC-style flows
Listings, search and transactional workflows
Integration with payment gateways and CRMs

View relevant services → · Explore technologies

Example stack

Stack 03

Internal tools & analytics dashboards

Operational dashboards and internal tools replacing spreadsheets and ad-hoc scripts.

Typical stack

React.js · Laravel or Nest.js · PostgreSQL · BI / analytics tooling

Role-based dashboards for teams and management
Automations for repetitive internal processes
Audit trails and reporting views for leadership

View relevant services → · Explore technologies

Example stack

Stack 04

Content-led product & marketing site

Marketing site, blog and simple app flows sharing one stack.

Typical stack

Next.js or React.js · WordPress or headless CMS · REST / GraphQL APIs

SEO-friendly landing pages and blog
Headless or hybrid CMS powering multiple frontends
Lead capture forms connected to CRM or email tools

View relevant services → · Explore technologies

Example stack

Recent work

Recent projects using these technologies

A few examples of how we have used CodeIgniter, Laravel and Flutter in real products. More detailed case studies can be shared under NDA if your domain is similar.

Case 01

Plugin – CodeIgniter operations panel

Internal tools · Legacy modernisation

We stabilised and extended a CodeIgniter-based panel used to manage critical plugin operations, without disrupting existing workflows.

Tech stack

CodeIgniter · PHP · MySQL · Legacy panel modernisation

Outcome: Improved reliability and clearer structure, with a roadmap for gradual migration away from legacy code while keeping the business running.

Read case study → Real-world example

Case 02

SnappyState – Laravel admin panel

B2B SaaS · Admin dashboards

We delivered a Laravel-based admin panel for SnappyState to manage users, data and workflows through a clean, opinionated backend.

Tech stack

Laravel · PHP · MySQL/PostgreSQL · REST APIs

Outcome: Faster day-to-day operations, clearer permissions and a maintainable codebase that can evolve with new product features.

Read case study → Real-world example

Case 03

Hellory – Flutter mobile application

Mobile apps · Customer experience

We built a Flutter application for Hellory to give users a smooth, cross-platform mobile experience connected to existing backend services.

Tech stack

Flutter · Dart · REST APIs · Android & iOS

Outcome: Consistent mobile UX across platforms, quicker releases from a single codebase and a clear API contract with the backend team.

Read case study → Real-world example

FAQs · Custom software & teams

Frequently asked questions about our technology stack

These are some of the questions we usually answer when clients review React/Next.js, Laravel, Node/Nest.js, Flutter and related technologies with QalbIT.

Review trade-offs with you in plain language
Align on roadmap, milestones and non-goals
Plan future hiring and smooth handover from day one

Have a question that is not listed here?

Share your roadmap or idea and we’ll help you pick the right engagement model, tech stack and starting point.

Contact our experts

Can you work with our existing tech stack instead of replacing it?

Yes. We regularly work with existing stacks – including legacy PHP, CodeIgniter, older Laravel versions and mixed frontends. We usually start by stabilising the current system, adding monitoring and tests, then plan a step-by-step improvement or migration where it actually makes sense.

What if we are already using a different framework than React, Next.js or Flutter?

How do you decide between Laravel, Node.js / Nest.js and other backend options?

Can you help us gradually migrate from legacy CodeIgniter or older PHP apps?

Which databases and cloud providers do you usually recommend?

Will we be locked into a specific technology or vendor with this stack?

Contact Us for project discussion

Once you submit the form, one of our dedicated sales representatives will reach out to you within 24 hours. They are eager to discuss your needs and explore how we can assist you further.