Custom web development company for bespoke websites and web apps
Web application development, SaaS and bespoke web design built around your business
When off-the-shelf platforms do not fit, we build what does. Our developers design and build bespoke websites, customer portals, SaaS products and web apps with React, Node.js and Python, from MVP to full platform.
When you need custom development
If any of these sound familiar, we can help.
Your process is unique
Standard software forces your team to work around it.
Spreadsheets everywhere
Key work runs on spreadsheets and email.
Systems do not talk
Data is copied between tools by hand.
You have a product idea
You need an MVP built and launched quickly.
Your platform cannot scale
Your current system slows down as you grow.
You want a unique site
A template cannot deliver the experience you have in mind.
Our custom development services
Everything you need to build, launch and grow, from one team.
Web application development
Custom web apps for internal teams, customers and partners.
Bespoke web design
Unique websites designed and built from scratch.
SaaS & MVP development
Product discovery, MVP build and scaling for start-ups and SaaS.
Portals & dashboards
Customer portals, booking systems and admin dashboards.
React & Node.js development
Modern front ends and APIs built for speed and scale.
AI features
AI chatbots, automation and machine learning built into your app.
APIs & integrations
Connect your app to ERP, CRM, payment and third-party tools.
Support & scaling
Hosting, monitoring, updates and new features after launch.
Our custom web development process
A clear, step-by-step plan, so you always know what we are doing and why.
Discovery
We learn about your business, customers and goals before writing a line of code.
Plan & quote
A clear scope, timeline, milestones and an itemised quote.
Design
Wireframes and designs focused on your brand and on conversion.
Development
Clean, scalable code built on the right platform, with regular updates.
Testing & launch
Testing on every device and browser, SEO-safe redirects and a monitored go-live.
Support & growth
Ongoing support, maintenance and improvements after launch.
Live websites we have worked on
Real client projects. Click any card to visit the site.
MyRoof AI
Custom AI-powered web application.
- AI-powered web app
- Custom development
CBF Bank
Custom website for a financial services company.
- Custom development
Dar Alfkhamah Jewellery
Odoo website for a jewellery brand, connected to WhatsApp and Odoo CRM automation for enquiries.
- Odoo website
- WhatsApp + CRM automation
What our clients say
“The team developed a custom solution for our website and integrated AI features into the project. They understood our requirements and suggested improvements that made the system easier to use. The development process was organized and communication was consistent. Very pleased with the final result.”
“We asked AdvertX Agency to create an AI automation solution for our business. They helped automate repetitive customer and internal processes through custom workflows. This has reduced a lot of manual work for our team. Very impressed with their understanding of AI and business automation.”
“We needed a custom AI chatbot for our website and AdvertX Agency handled the project professionally. They understood what information our customers usually ask for and built the bot around those needs. The automation has saved our team a lot of time. Great experience working with their development team.”
Why choose AdvertX for custom web development
Experienced developers, plus SEO and ads in-house
Your site is built SEO-ready and conversion-focused, and the same team can grow it with SEO and paid ads after launch.
Real, live client websites
Our work is public. See the portfolio and visit the sites yourself.
One project manager
A single point of contact, clear milestones and honest updates from start to finish.
Support after launch
Maintenance, fixes and new features once your site is live, so it keeps performing.
Custom Web Development FAQs
Custom web development means building a website or web app from scratch around your business needs, instead of using a ready-made template or platform.
It depends on features, integrations and scale. We start with a free consultation and a clear, phased quote, often beginning with an MVP.
Start by writing down the problem you want to solve and your must-have features. Then speak to a development company that can show live projects. We offer a free consultation to scope your project.
We mainly use React, Node.js and Python, chosen to fit your project, team and long-term plans.
Yes. We can build the whole project or work alongside your in-house developers, designers and product owners.
Ready to build something that sells?
Tell us about your project. We will review it for free and send a clear plan and an itemised custom web development quote.
Prefer email? contact@advertxagency.co.uk