Custom Web Application Development with Django

I build custom web applications that solve real business problems -- admin panels, dashboards, APIs, e-commerce platforms, and internal tools. Built with Django, designed to scale, delivered on a fixed budget.

01 / OVERVIEW

Why Choose Custom Web Application Development

Off-the-shelf solutions work until they do not. WordPress, Shopify, and no-code tools are great starting points, but every growing business eventually hits their limits. You need a feature they do not support. You need performance they cannot deliver. You need an integration they do not offer. That is when custom development becomes the obvious choice.

A custom web application fits your exact business workflow. No workarounds, no plugins that break on updates, no monthly fees for features you do not use. You own the code, you control the roadmap, and you scale on your terms.

I am Kirill Strelnikov, a freelance Django developer based in Barcelona. I have built 15+ web applications for businesses across Europe -- from SaaS platforms and e-commerce stores to real estate portals and internal management tools. My stack is Django, PostgreSQL, Redis, and Docker -- battle-tested technology that powers some of the world's largest web applications.

02 / WHAT I BUILD

Types of Web Applications I Build

Business Dashboards & Admin Panels

Data visualization, role-based access control, reporting and analytics, content management, user management. Turn your business data into actionable insights with a custom dashboard built for your specific KPIs.

Customer-Facing Platforms

E-commerce stores, marketplaces, booking and reservation systems, customer portals, membership platforms. Built to handle real traffic with fast page loads, SEO optimization, and mobile-responsive design.

Internal Tools & APIs

CRM extensions, inventory management systems, REST APIs for mobile apps, workflow management tools, document processing systems. Replace spreadsheets and manual processes with proper software.

For SaaS-specific development with subscription billing and multi-tenancy, see my SaaS MVP development service.

03 / TECHNOLOGY

Web Development Tech Stack

I use a monolith-first approach with Django. This means faster development, simpler deployment, and lower costs compared to microservice architectures -- without sacrificing scalability.

Python Django Django REST Framework PostgreSQL Redis Celery Docker Nginx HTML / CSS JavaScript Tailwind CSS HTMX Alpine.js Git CI/CD AWS / DigitalOcean

Backend: Django provides authentication, admin panel, ORM, form handling, and security out of the box. Django REST Framework exposes clean APIs. PostgreSQL handles complex queries and full-text search. Redis powers caching and sessions.

Frontend: For most business applications, server-rendered templates with HTMX deliver the best balance of interactivity and development speed. Tailwind CSS for styling, Alpine.js for lightweight client-side logic. No heavy JavaScript frameworks unless the project genuinely requires them.

Infrastructure: Docker for consistent deployments. Nginx as reverse proxy. Celery for background tasks. CI/CD pipelines for automated testing and deployment. Hosting on DigitalOcean or AWS.

04 / PROCESS

How I Build Your Web Application

Requirements & Architecture

I analyze your business needs, define the feature set, and design the database schema and application architecture. This phase produces wireframes, a technical specification, and a fixed-price estimate. Takes 3-5 days.

Database Design & Prototyping

I design the data models, set up the Django project, and build a working prototype with core functionality. You can interact with the admin panel and see the data structure within the first week.

Iterative Development

I build features in priority order with weekly demos. You see working software every week, test it with real data, and provide feedback. Each sprint delivers usable functionality, not just backend code.

Testing & Performance Optimization

Automated tests for critical paths, performance optimization (database queries, caching, page load speed), security audit (OWASP top 10), and cross-browser testing. The app must be fast, secure, and reliable.

Deployment & Handoff

Server setup, Docker deployment, SSL, monitoring, and automated backups. I provide documentation, admin training for your team, and 30 days of post-launch support. You own the code and infrastructure.

05 / CASE STUDIES

Web Applications I Have Built

SaaS Time-Tracking Platform for HoReCa

Built a multi-tenant SaaS platform with shift management, employee roles, automated payroll calculations, and detailed reports. Manager dashboards and employee portals. The system serves multiple cafes in Barcelona, cut operational costs, and eliminated calculation errors.

DjangoPostgreSQLREST APIDockerMulti-tenant

TrendForU — Fashion E-Commerce Platform

Custom Django e-commerce platform with product catalog, image galleries, user accounts, shopping cart, wishlist, loyalty points system, weekly drop scheduling, and live purchase notifications. Built from scratch to match the brand's unique shopping experience.

DjangoPostgreSQLREST APIE-commerceLoyalty System

Real Estate Platform with Automated Import

Django platform with automatic synchronization from external data sources, advanced search filters, and SEO-optimized URL structure. Automated publishing reduced time costs dramatically and increased organic traffic through structured data and clean architecture.

DjangoCeleryPostgreSQLSEOData Pipeline

06 / WHO THIS IS FOR

Who This Service Is For

Startups that need a custom MVP -- your idea does not fit into WordPress or Wix, and you need a real web application built properly from day one
Businesses outgrowing spreadsheets -- you manage inventory, orders, or customer data in Excel and need proper internal tools
Companies needing a REST API for their mobile app, third-party integrations, or frontend SPA
E-commerce businesses that need custom features beyond what Shopify or WooCommerce can offer
Teams that need admin panels and dashboards for data management, reporting, and operational oversight

If your business needs software that does exactly what you need -- no more, no less -- custom development is the answer. Book a free consultation to discuss your project.

07 / PRICING

Web Application Development Pricing

Transparent pricing based on project scope. All prices include development, testing, deployment, documentation, and 30 days of post-launch support. You own the code.

Simple Web App

€2,000 / from

Admin panel or basic CRUD

Landing page with admin panel
Basic data management (CRUD)
User authentication
Docker deployment
2-3 weeks delivery
30 days support

Standard Web Application

€5,000 / from

Full app with roles and API

Full-featured web application
Role-based access control
REST API
Third-party integrations
Responsive design
4-6 weeks delivery
30 days support

Complex Web Platform

€12,000 / from

Multi-module platform

Multiple modules and user types
Advanced integrations
Background processing
Performance optimization
Analytics dashboard
8-14 weeks delivery
60 days support

Need a custom scope? Get in touch for a tailored proposal within 24 hours.

Frequently Asked Questions

Why Django for web application development?

Django is the most productive framework for building business web applications. It includes authentication, admin panel, ORM, form handling, and security features out of the box. This means faster development, lower cost, and fewer bugs. Django powers Instagram, Pinterest, and Mozilla -- it scales from MVP to enterprise without switching frameworks.

How long does it take to build a custom web application?

A simple web app takes 2-3 weeks. A standard application with auth, roles, API, and integrations requires 4-6 weeks. Complex multi-module platforms take 8-14 weeks. Every project starts with a discovery phase where I provide a detailed timeline and fixed-price estimate before development begins.

Can you build both frontend and backend?

Yes. For most business applications, I build server-rendered frontends with Django templates, HTMX for interactivity, and Tailwind CSS for styling. This is faster to develop and simpler to maintain than a separate SPA. For apps that need a rich JavaScript frontend, I build the backend API and coordinate with a frontend developer.

Do you handle hosting and deployment?

Yes. I deploy using Docker on DigitalOcean, AWS, or any VPS provider. Deployment includes Nginx, SSL, automated backups, CI/CD pipelines, and monitoring. I provide documentation so your team can manage deployments independently after handoff.

How much does web application development cost?

A simple web app starts from EUR 2,000. Standard applications cost from EUR 5,000. Complex platforms start from EUR 12,000. I provide a fixed-price estimate after the discovery phase. For a detailed cost breakdown, see my Django development cost guide.

08 / YOUR DEVELOPER

About Kirill Strelnikov

Kirill Strelnikov is a freelance Python and Django developer based in Barcelona, Spain. He has built 15+ custom web applications for clients across Europe, including SaaS platforms, e-commerce stores, real estate portals, and business management tools. His core stack is Django, PostgreSQL, Redis, Celery, and Docker.

He works with fixed-price contracts. Communication in English, Spanish, and Russian.

Learn more on the about page or explore the full portfolio.

Get Your Quote

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