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SaaS Products

technical architecture

Data and analytics

khajavi.tech

Web Application Development

Makeyour workby Khajavi

Web Application Development

Web application development is no longer just about putting a few screens behind a login and calling it a product. For most modern companies, your web application is the business: it’s where customers sign up, where your teams work, where data flows, and where decisions are made. At khajavi.tech, we treat web app development as the craft of turning strategy, UX, data and infrastructure into a reliable system you can bet your growth on.


Led by Mehdi Khajavi, we sit at the intersection of product, engineering, data and growth. That means we don’t just ship features. We design and build web applications that are fast, resilient, measurable and aligned with the realities of your business model. Whether you are an early-stage startup launching your first SaaS product, or an established company replacing legacy tools with a modern web platform, our web application development services are designed to give you a system that can grow with you.

What Is Web Application Development Really About?

A web application is a piece of software that runs in the browser and lives on the web. Unlike a static website, which mainly presents content, a web app is interactive: users log in, perform actions, trigger workflows, view dashboards, collaborate with teammates and integrate with other systems. Web application development is the process of designing, building, deploying and continuously improving that system.

In practice, this involves far more than writing code. A serious web application has:

A clear product purpose
– who it serves, what problem it solves, and how it supports your strategy.
A thoughtful user experience
– flows that make sense for real-life users, not just “happy path” demos.
A robust technical architecture
– front-end, back-end, database, APIs and integrations working together.
Data and analytics
– tracking, events, KPIs, dashboards and instrumentation from day one.
Non-functional foundations
– performance, security, scalability, observability and maintainability.

At khajavi.tech, web application development is the discipline of getting all of these layers to work together in a way that feels simple to your users and controllable to your team.

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Types of Web Applications We Build

Because we combine product thinking, engineering, BI and database expertise, we tend to work on web applications that are more than “just a frontend”. Typical projects include:

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1. SaaS Products and B2B Platforms

Subscription-based software delivered through the browser. From onboarding and billing to admin portals and multi-tenant architectures, we help you design and build a SaaS product that is technically solid and commercially viable. We focus on clean domain models, clear pricing logic and analytics that help you understand usage and churn.

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2. Internal Tools and Operations Dashboards

Many teams still run their operations on spreadsheets and improvised scripts. We work with you to turn these fragile setups into dedicated internal web applications: order management portals, logistics dashboards, finance and reporting tools, inventory systems and more. The goal is to empower your team to work faster and with fewer mistakes.

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3. Customer Portals and Self-Service Interfaces

A well-designed web portal lets your customers update their data, view their usage, download reports, pay invoices, open tickets and manage their account without creating extra load on your support and operations teams. We design these web applications with a strong focus on UX, data accuracy and performance.

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4. Analytics and BI-Focused Web Applications

Because we also do business intelligence and data warehousing, we often build web applications that sit on top of a data platform: multi-level dashboards, cohort explorers, funnel analysis tools, sales and revenue reporting systems, and executive control panels. These are not just “charts on a page”. They are decision support tools that your team uses daily.

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5. Modernizing Legacy Systems

If your existing system is a mix of old frameworks, slow database calls and UI patterns from another decade, we can help you migrate to a modern web application. Sometimes we rebuild from scratch with a clear migration plan. Sometimes we incrementally refactor and replace parts of the stack. In all cases, we aim to reduce risk and avoid downtime.

Our Approach to Web Application Development at khajavi.tech


Tools and frameworks matter, but they are not where we start. Our web application development process starts with understanding your business, your users and your constraints, then designing a solution that makes sense on all fronts: product, technology, data and growth.

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1. Discovery: Understanding the Problem Before the Solution

We begin with focused conversations, not a feature list. In discovery, we clarify:

  • What business problem this web application should solve.
  • Who the primary users are and what their daily reality looks like.
  • What systems and data sources already exist in your environment.
  • What constraints you have around budget, timelines, compliance or internal capacity.

The outcome of discovery is a shared understanding of what “success” means for your web application development project – in clear, measurable terms.

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2. Product and UX: Designing the Right Flows

Once we know what we are building and why, we move into product and UX design. This includes application flows, screen hierarchies, navigation, data presentation and micro-interactions. We think in terms of real-world usage: what happens on a slow connection, what happens when a user makes a mistake, what happens when data is delayed, and how we keep people in control throughout.

Because we also understand databases and BI, our UX work is grounded in how data is stored and consumed, not just how it looks. This avoids the common disconnect where a beautiful UI is built on top of a fragile or inconsistent data model.

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3. Architecture: Setting a Technical Foundation You Can Grow On

For web application development to be sustainable, the technical foundation must be solid. We design an architecture appropriate to the size and ambition of your project:

  • Clear separation between front-end, back-end and data layers.
  • APIs that can serve both web clients and other services.
  • Database schemas that reflect your business entities and workflows.
  • Logging, monitoring and error handling from day one.
  • Room for future integrations: payments, identity providers, CRM, marketing tools, data warehouses and more.

We prefer technologies that are proven in production (for example .NET, SQL Server, Blazor, modern JavaScript/TypeScript, Kendo UI, Directus and related tooling), but ultimately we choose what best fits your context and team.

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4. Implementation: Clean, Production-Ready Engineering

During implementation we build the web application in small, reviewable increments. This allows you to see progress, give feedback and make decisions as we go. We care about:

  • Code quality – readable, testable and aligned with your long-term roadmap.
  • Performance – responsive interfaces, optimized queries and minimal unnecessary network calls.
  • Security – correct handling of authentication, authorization, user data and secrets.
  • Observability – logging, metrics and alerts that help you understand what the system is doing.

We also integrate analytics and event tracking so your product and growth teams have insight into how users actually interact with the web application.

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5. Testing and Hardening

Before going live, we test the web application from multiple angles:

  • Functional testing of core flows and edge cases.
  • Performance checks around known heavy operations.
  • Security review of authentication, authorization and data exposure.
  • Data integrity checks for critical entities (orders, payments, records, metrics).

The goal is not to promise perfection, but to significantly reduce avoidable surprises, especially in the first weeks after launch when the product is most visible.

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6. Launch, Monitoring and Iteration

Once your web application is live, we do not disappear. We help you monitor how the system behaves under real traffic, how users are actually using it, and where the next improvements should be. This can turn into an ongoing collaboration under a monthly retainer or dedicated pod, where we keep iterating on both product and infrastructure.

Non-Functional Requirements: The Part of Web Application Development You Don’t See in Screenshots


Screenshots do not tell you whether a web application is robust. Non-functional requirements are the characteristics that determine how the system behaves when things are not ideal: traffic spikes, slow dependencies, user errors, partial failures or bad data. We treat these as first-class citizens in our web app development work.

Performance and Scalability

A beautiful interface is useless if users are waiting several seconds for every interaction. We design for performance at multiple layers:

  • Efficient front-end rendering and minimal blocking resources.
  • API endpoints that do only what they need to do.
  • Database queries that are indexed and tuned, especially on critical paths.
  • Simple but effective caching strategies where appropriate.
  • Scalable infrastructure that can grow with your usage.
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Security and Compliance

Even if you are not in a heavily regulated industry, your web application holds valuable data: user credentials, customer records, logs, business metrics. We implement:

  • Secure authentication and session management.
  • Role-based access control for sensitive actions.
  • Input validation and output encoding to minimize common attack vectors.
  • Separation of environments (development, staging, production).
  • Principles of least privilege across services and databases.
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Maintainability and Extensibility

A quick hack may feel productive for a prototype, but it becomes expensive once the web application has real users. We aim for designs and implementations that:

  • Are understandable to the next engineer who joins your team.
  • Allow new features to be added without breaking half the system.
  • Work well with automated tests and CI/CD pipelines.
  • Keep configuration and secrets in the right places.
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How Web Application Development Connects to Data and BI


One of the unique aspects of khajavi.tech is the combination of web application development with business intelligence, data warehousing and database performance engineering. For many products, the real value lies in how data flows through the system and how it can be used for decision-making.



When we design a web application, we think about:


  • What data should be captured at each step of the user journey.
  • How that data is stored and modeled in the database.
  • How we can feed that data into a data warehouse or BI platform.
  • What dashboards or reports will be needed by management or operations.
  • How we maintain data quality and consistency as the product evolves.
This means your web application is not just an interface – it is part of a larger data platform that supports growth, forecasting and strategic decisions.


Use Cases: Where Our Web Application Development Services Fit Best


While we adapt to different industries, there are recurring patterns where our skills are particularly effective:
  • eCommerce companies needing custom dashboards, inventory tools or integrated order flows.
  • FinTech products requiring secure, auditable web apps with robust data pipelines.
  • SaaS platforms that need stable multi-tenant backends and clean admin interfaces.
  • Logistics and manufacturing teams moving away from spreadsheets to web-based operations tools.
  • EdTech products that combine content, assessments, analytics and admin panels.
If your situation involves complex data, multiple user types and the need for reliable reporting, web application development with khajavi.tech is a strong match.


Approach and philosophy

Working with Startups

With startups, web application development is often about speed and focus: getting a real product into users’ hands without building more than you need. We help you:

  • Define a realistic MVP that still feels complete to users.
  • Choose technologies that do not trap you as you grow.
  • Instrument the product so you can learn from real usage.
  • Prepare for investor conversations with clear metrics and roadmaps.


Working with Established Companies

For more mature organizations, web application development often means modernization, consolidation and better data visibility. We help you:

  • Replace fragile legacy tools with modern web applications.
  • Connect previously isolated systems through APIs and data pipelines.
  • Standardize KPIs across departments using shared dashboards.
  • Improve database performance to keep up with growth.


How We Measure the Success of a Web Application Development Project


Success is not “we shipped version 1”. Success is when your web application consistently creates value for your users and your business. Some of the metrics we look at together include:
  • Adoption and usage by target users.
  • Reduction in manual work or error rates compared to the old way of working.
  • Performance and uptime under real-world conditions.
  • Accuracy and reliability of critical data and reports.
  • Time-to-ship for new features once the system is in place.
We design the project from the start so that these metrics can actually be observed, not just guessed.


Engagement Models for Web Application Development with Khajavi


Different companies need different shapes of collaboration. At khajavi.tech we typically work in one of these modes:
  • Fixed-scope project – for well-defined web application development efforts, with clear boundaries, a set timeline and a fixed price.
  • Monthly retainer – for ongoing improvement of a product or platform, combining new features, maintenance and BI work.
  • Dedicated pod – a focused team working as an extension of your own, ideal for long-term product roadmaps.
  • Consulting and audits – if you already have a web app and need expert eyes on architecture, database performance or data pipelines.


How to Get Started


If you are considering a new web application or want to improve an existing one, the next step is simple: start a conversation. Share where you are now, what is not working and what you would like to achieve. We will respond with a clear proposal for how web application development with khajavi.tech can help. You can reach us via WhatsApp, email or the contact options on the site – and from there we move into a structured discovery and planning phase.



Web Application Development – Frequently Asked Questions


1. What is web application development?

Web application development is the process of designing, building, deploying and maintaining software that runs in a web browser. Unlike static websites, web applications are interactive: users log in, perform actions, trigger workflows and work with live data. At khajavi.tech, web app development always includes UX, architecture, data modeling, analytics and long-term maintainability – not just coding screens.

2. How is a web application different from a website?

A website is usually content-focused: pages, articles, landing pages and marketing information. A web application is task-focused and data-driven: it allows users to manage accounts, run processes, view dashboards, collaborate and use features that behave like software. Many modern products blend both, but if users rely on it to get work done, it is essentially a web application.

3. What kinds of web applications does khajavi.tech build?

We build SaaS platforms, B2B portals, internal tools, analytics dashboards, customer self-service portals and modernized replacements for legacy systems. Most of our web application development work involves multiple user roles, integrations with other systems and a strong data/BI component.

4. Which technologies do you use for web application development?

We typically use production-proven stacks such as .NET and SQL Server on the back end, Blazor and modern JavaScript/TypeScript on the front end, Kendo UI and related component libraries, and tools like Directus and ETL frameworks for data and content. The exact stack is chosen based on your requirements and the skills of your internal team.

5. How long does it take to develop a web application?

Timelines depend on scope, complexity and integration needs. Smaller focused applications can be built in a few weeks, while more complex platforms with multiple user types, custom dashboards and data pipelines can take several months. During discovery, we define a realistic roadmap with milestones, so you know exactly what to expect.

6. Do you only build new web applications, or can you improve an existing one?

We do both. Many clients come to khajavi.tech with an existing web application that is slow, hard to change or unreliable. We can audit the current system, identify bottlenecks and either improve the current implementation or plan a structured migration to a more modern architecture.

7. Can you help if my web application is slow or times out under load?

Yes. Performance and scalability are a core part of our work. We investigate slow API calls, heavy database queries, inefficient front-end patterns and infrastructure limits. Then we apply targeted optimizations such as query tuning, indexing, caching, refactoring hot paths and, if needed, rethinking parts of the architecture.

8. How does web application development connect to BI and data?

Your web application is often the main source of operational and product data. Because khajavi.tech also designs data warehouses and BI dashboards, we design your web app so it emits the right events, stores clean data and integrates well with analytics tools. This makes it much easier to build reliable reporting and decision support on top.

9. Do you provide UX and UI design for web apps, or do you only code?

We provide both. Good web application development starts with understanding workflows and designing UX that fits real users, not just a list of features. We design layouts, navigation and interactions, and then implement them in code using modern front-end technologies and component libraries.

10. How do you handle security in web application development?

We treat security as part of the core requirements, not an afterthought. This includes secure authentication and authorization, proper session management, input validation, safe data storage, role-based access control and careful handling of integrations and secrets. We also structure environments and deployment processes to reduce risk.

11. Can you integrate my web application with third-party services?

Yes. Most modern web applications integrate with payment gateways, identity providers, CRMs, email and messaging tools, analytics and more. We design and implement robust integrations, with appropriate error handling and monitoring so you can see when external services misbehave.

12. Do you support multi-tenant SaaS architectures?

We have experience designing and building SaaS web applications where a single platform serves multiple customers with their own data and configurations. This involves careful choices in database structure, access control, deployment and monitoring. If you are planning or already running a SaaS, we can help you design a safe, scalable multi-tenant model.

13. How do you ensure a web application is maintainable in the long term?

Maintainability comes from clear architecture, clean code, good domain modeling and appropriate documentation. We avoid unnecessary complexity, keep boundaries between modules clear and make sure the system works well with testing and CI/CD. That way, your team – or ours – can extend the web application safely over time.

14. What is your process for starting a web application development project?

We start with a discovery call where we listen to your goals, constraints and current situation. Then we outline a proposed approach, timeline and budget. If we agree to proceed, we move into a more detailed discovery and design phase, followed by implementation, testing, launch and post-launch support.

15. Do you offer support and maintenance after the web application goes live?

Yes. Many clients keep working with khajavi.tech on a retainer basis. We handle bug fixes, performance tuning, small improvements, new features and ongoing analytics and BI work. This gives you a stable, long-term partner for both the web application and its data ecosystem.

16. Can you help my team define the right scope for an MVP?

Absolutely. Many teams struggle to decide what belongs in a minimum viable product. We help you focus on core workflows and value, trim non-essential features and still ensure the web application feels complete enough for real users. The result is a first release that can be shipped earlier and improved based on real feedback.

17. How do you price web application development services?

We use a mix of fixed-scope pricing for well-defined projects, monthly retainers for ongoing work and hourly consulting for audits and advisory. The exact model depends on how clear the scope is and how long you expect to work together. During the proposal phase, we explain options transparently so you can choose what fits your situation.

18. Do you work with internal teams, or only as a fully external partner?

We regularly collaborate with internal developers, designers and product managers. Sometimes we own the entire web application development process. Other times we focus on specific layers, such as back-end, database, BI or architecture, while your internal team handles the rest. The collaboration model is flexible.

19. Can you review an existing web application before we decide on a rebuild?

Yes. We can perform an architecture and code review, plus a database and performance audit. Based on that, we provide a practical assessment: what can be improved, what should be refactored and where a full rebuild might make more sense. This helps you make an informed decision instead of guessing.

20. How do you handle migrations from legacy systems?

Migrations are planned carefully to avoid data loss and downtime. We map your current system, design the target web application and then define a migration path, which may involve running both systems in parallel for a while. We use scripts, ETL jobs and validation steps to ensure data is moved correctly and safely.

21. Can you help if our web application suffers from inconsistent or incorrect data?

Yes. Because we also work deeply with data modeling and BI, we can investigate where inconsistencies come from: input validation issues, race conditions, incomplete workflows or flawed transformations. Then we adjust both the web app logic and the underlying data flows to restore confidence in your data.

22. Do you support internationalization and localization in web applications?

If your product needs to support multiple languages or regions, we design the web application with localization in mind: proper text handling, date and number formats, right-to-left support where needed, and content structures that make translation manageable. We also consider how localized content is stored and deployed.

23. How do you approach analytics and tracking in a web application?

We define key events and metrics together – sign-ups, activations, conversions, feature usage, churn signals – and then implement tracking in a way that is reliable and privacy-aware. Events can be sent to your analytics tools, data warehouse or BI platform so that both product and leadership teams get a clear picture.

24. Can khajavi.tech help with both front-end and back-end development?

Yes. We are comfortable with the full stack: front-end frameworks and component libraries, back-end APIs and services, database design and optimization, and the infrastructure that ties it all together. This full-stack view helps prevent the kind of misalignment that happens when different parts are built in isolation.

25. What makes your web application development approach different?

The main difference is the combination of product thinking, modern engineering, BI and database performance inside one studio. We design web applications as part of a larger system that includes data, analytics and growth. This makes our decisions more grounded and reduces the risk of building something that looks good in a demo but fails in production.

26. Do you take on small web application development projects?

It depends on the context. We are usually a good fit when the web application is strategically important, even if the initial scope is small. If a project is too minor or purely cosmetic, we may not be the ideal partner. A quick conversation is often enough to see whether khajavi.tech is the right choice for you.

27. How do you communicate during a web application development project?

We use a mix of regular calls, async updates and shared project spaces. You see progress frequently, not just at the end. We document decisions, trade-offs and open questions so you always know where the project stands and what is coming next.

28. Can you work with existing design systems or component libraries?

Yes. If your organization already has a design system or preferred UI component library, we can adopt it within your web application. This helps keep your brand and UX consistent across products and reduces the learning curve for your users and internal teams.

29. What do you need from us to start web application development?

At minimum, we need a clear point of contact, access to any existing systems or documentation, and an honest view of your constraints and expectations. The more context you can share about your users, data and business model, the better we can design a web application that fits.

30. How can we talk to you about our web application idea?

You can get in touch via the contact options on khajavi.tech, WhatsApp or email. Share a short summary of your idea, your current situation and what you want to achieve. We will respond with next steps and, if it makes sense, schedule a focused discovery call to explore web application development options together.

Web Application Development Services | khajavi.tech
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