"Our in-house development team are always ready to innovate, mixing technologies to build new features."
Ciprian Visan
Head of Development
Our Approach
Our core approach keeps bespoke development structured and on track.
We work with PHP, Ajax, ASP, Python, JavaScript, MySQL, HTML and CSS, depending on the project’s needs – every build is different.
Valuable Feedback
Client feedback is always welcome, and we rely on it to create work our clients love. It’s all part of building a strong relationship with our customers.
Bespoke Development may include:
- Custom API Integrations to combine processes
- Website Features & Plugins to make your site unique
- CRM Automation to ease customer communications
- Secure Dashboards for administration and more.
Research & Investigation
Starting with your ideas, target audience and business plans, we identify what makes this project special. This supports concept design, fitting key features into the optimal flow for user experience. You’ll see the structure and design in wireframes and mock-ups for approval before the build.
Building & Testing
We test as we go, using automation and testing the code ourselves. Regular testing catches any bugs early on, reconciling them before they can create further issues. Once the build is complete, we test it again to confirm that it all works together.
Smooth Launch, Every Time.
Our devs follow a strict launch procedure before we schedule the project for launch. Once the product is live, we continue to test to catch any teething problems early. This includes visual testing as well as checking all forms, live payments, email functions, broken URLs, redirects, and cookies.
Post-Launch Care 
For 2 months after the launch, we stay with you to monitor logs, analyse traffic and perform A/B testing. This drives program optimisations that evolve the project so it can thrive. While we strongly recommend our Maintenance packages, beyond this period, this initial care makes sure everything works as intended.
Custom web development for all businesses
Offer your customers an efficient and engaging experience with the help of custom software developers at eSterling.
You might need a simple brochure website, CRM or an eCommerce online shop.
More complex projects include custom API integration, plugins, modules, extensions, large business platforms or secured administration dashboards for specific flows and features.
Simplify your operations with the right application.
Usually the payment method depends on the nature of the project. Payment providers on our shortlist include Stripe, PayPal, Opayo (SagePay), DekoPay, Klarna, DivideBuy, Realex (Global Payments), Worldpay and SumUp.
We can always use simple methods like “Pay by bank transfer” or “Pay on delivery”. It’s safe to say we’ve worked with all major payment providers: we’ve built plugins, modules, extensions and custom API integrations for all of the major players in this market.
Shipping is the type of service people ignore, but it can make or break your business, so we always make this feature a high priority.
We’ve integrated custom web development projects with all major national and international shipping companies. For us, integrating with DPD, DHL, PalletForce, Royal Mail, ShipStation, EasyShip and a lot of regional shippers is not a problem, so you can be confident in delivery services.
We’ve also built complex automated shipping systems, printing shipping labels straight from your customer database with just a few clicks.
Due to our unique research approach and experienced development & design teams, we treat each project identically and we simply convert the idea into a fully functional website, web-app or business platform.
We build brochure websites at various levels of complexity, CRM systems, eCommerce solutions, bespoke projects, bespoke integrations, API’s, plugins, modules, extensions and large business platforms or secured administration dashboards for specific flows and features.
Our list of bespoke work covers a variety of applications and features including custom form creation, digital signatures, document generation, 2FA modules, advanced search bars, trade and merchant interfaces, import/export, data manipulation features and multi-level MVC business platforms which are fully integrated with 3rd parties.
Multi-language and multi-currency websites are also present in our portfolio and we explore the full potential of AI and auto-translators to make your site truly international and receive payments in local currencies.
Of course! We are custom API developers at our core. We build new integrations and use existing APIs to integrate your website with third party applications.
The main purpose of an integration between 2 or more stand-alone software products is to create a smooth flow and reduce workload, time and costs.
For example, a simple API integration can link a website with a payment provider, a stock management system, a courier system and a piece of accounting software. By having all four services under the same umbrella, you can receive an order that is paid for online, recieve updated stock information for this order, print a shipping label and invoice the order from the same interface in under 1 minute!
We’ve worked with and integrated over 50 different API’s such as Microsoft 360, Amazon FBA, eBay, DHL, DPD, Xero, SagePay, Google (for analytics & metrics, enhanced ecommerce tracking, product feeds, docs, maps, booking and calendar) MailChimp, DekoPay, Klarna, Stripe, PayPal, EposNow, booking and reservation systems, e-ticketing and many more.
The standard process for each bespoke development project has many granular stages to ensure nothing is missed. These can be separated into sections: design, build, testing, feedback, launch, and live testing.
Bespoke development is complex, and stages include:
- Initial project presentation – first discussion
- Putting together a sitemap
- Initial project “flat design” – mock-up
- Putting together the wireframe and layout major features
- Start building the major features
- Create secondary features on top of main ones
- Import content (static pages, products, images, videos etc)
- Implement “on-site” SEO requirements
- First functional testing stage
- Implementing testing feedback and fixes
- Second functional testing stage
- Design all visual elements and brand identity
- First design testing stage
- Implementing design testing feedback and fixes
- Second design testing stage
- General testing before the project is proofed to client
- Project is released on a proof domain for the client to see
- Discuss client feedback and implement changes
- Implement client feedback and changes
- Test design and functionality after client feedback
- Client acceptance and set a “go-live” date
- Pre-launch checks and testing
- Create backup, install certificates and pre-requisites before launch
- “Go-live”
- Live testing
- Log tracking, error monitoring and traffic data analysis
- Suggest optimisations and changes according to discoveries (data driven)
- Backup and monitor the website
- Project review
- Permanent client communication and recommendations to improve conversion rate
