Logoleetsoft
Services

Services

  • Web Development
  • Mobile Development
  • Custom Software Development
  • AI & Automation
  • SEO, AEO & GEO Optimization
  • MVP Development
  • Dedicated Development Team
  • API Development & Integration
  • QA & Software Testing
  • Cloud Deployment & Infrastructure
  • Legacy Software Modernization
  • Software Architecture Consulting
  • E-commerce Development
  • Data Engineering & Analytics

Industries

  • Automotive Software Development
  • Fitness & Wellness App Development
  • FinTech Software Development
  • Healthcare & Wellness Software
  • Real Estate & PropTech
  • Logistics & Supply Chain Software
  • EdTech Software Development
  • Travel & Hospitality Software
  • Retail Technology & POS
  • Insurance Software Development
  • EN
  • ES
  • RU
  • UA
  • EN
  • ES
  • RU
  • UA

Web Development Services Built by a Senior Team, Not a Bench

We build production web platforms for companies that need it done right the first time. Our web development services cover frontend development, backend development, CMS integration, and API work, delivered by the senior engineers who will actually maintain what they build. We've shipped 8 real case studies and keep a limited number of projects running at any time, so quality never slips.

100K

Monthly active users, Zeekr Ukraine

When companies come to us for web development

A new product needs to launch and the internal team is stretched across other priorities. Bringing in a dedicated web development team keeps the roadmap moving without pulling engineers off existing work.

An existing website or web app needs to grow. New features, new integrations, or a rebuild the current codebase can no longer support all fall under custom web development, not a quick patch.

A previous vendor left mid-project or delivered something that doesn't hold up, and someone needs to take over an existing codebase without starting from zero.

A marketing site needs to become a real product. CMS-driven content, regional sub-sites, and interactive experiences go well beyond what a template can offer.

Web development services we provide

01
Frontend development
Component-driven UIs in React or Vue, responsive across every screen and built to match real design systems, not a generic component library.
02
Backend development
API design, business logic, and data layers in Node.js or Python. Every backend is built for the traffic and integrations your product actually needs.
03
CMS & content platforms
Multi-site, multi-region content management. We've shipped this with Wagtail and Django, so non-technical teams can update content safely without touching code.
04
API development & integrations
Connecting your web application to payment providers, CRMs, analytics tools, and internal systems, with proper error handling instead of a fragile happy-path integration.
05
E-commerce development
Catalogs, checkout, and order management, with real delivery and payment integrations instead of a generic plugin bolted onto a theme.
06
Performance optimization
Core Web Vitals, image and asset delivery, and render performance work. A slow site loses the traffic and ad spend it took real effort to earn.

What a slow page actually costs

How much does page speed matter for conversions? A lot. Bounce probability climbs sharply once load time passes the first second, and mobile users are the least patient of all.

+32%
+90%
+123%
3 seconds5 seconds10 seconds

Increase in bounce probability vs. a 1-second baseline load time. Source: Google web performance research, widely cited across 2025 industry studies

Zeekr Ukraine

Official brand website for a premium EV market entry

Built from scratch for Zeekr's Ukraine market entry, this custom web development project includes a Vue.js frontend, in-browser 3D vehicle viewers, and a Wagtail and Django CMS running per-city regional sub-sites from one shared admin. The platform now serves 100,000 monthly active users.

Vue.js · Wagtail · Django · 3D Viewers · Multi-site CMS

Read the case study

How we work with an existing team or codebase

Most web development pages assume a greenfield build. In practice, most projects start with something that already exists: a codebase, a team, or both, and our web development services are built around that reality.

We start with a technical audit before writing any code, covering what's there, what's fragile, and what can be reused. If you already have an in-house team, we scope our part explicitly so there's no overlap or ambiguity about who owns what.

If we're taking over an existing codebase, we say upfront whether it's in workable shape or needs a rebuild. We don't quietly inherit technical debt and let it become a surprise for you later.

Tech stack

Technologies used to deliver a responsive, CMS-driven premium EV website with 3D vehicle experience and regional sub-sites.

Frontend
Vue.js, Component-driven UI, Responsive Layout, Design Tokens, Global Zeekr Brand System
3D Rendering
In-browser 3D Viewers, Interactive Vehicle Models, No Plugin Dependency
Backend / CMS
Wagtail, Django, Multi-site CMS, Shared Admin, Region-specific Content

Our development process

  1. 01

    Discovery & technical audit

    Understand the goal, the existing system (if any), and what "done" actually means before any code is written.

  2. 02

    Scope & architecture

    Frontend and backend split, data model, and integration points defined and agreed before development starts.

  3. 03

    Development

    Iterative builds with regular check-ins, so you see working software throughout the project, not just a status report at the end.

  4. 04

    QA

    Cross-browser and cross-device testing against the agreed scope before anything ships.

  5. 05

    Launch

    Deployment, DNS and hosting handoff, and a final pass on performance and Core Web Vitals.

  6. 06

    Support

    Post-launch fixes and iteration, scoped separately once the product is live and real usage starts surfacing the next priorities.

Frequently asked questions

How much does web development cost?+

It depends on scope. A marketing site and a CMS-driven multi-region platform are very different projects, so we give a real estimate after the discovery call instead of a generic range.

Can you work with our existing codebase or team?+

Yes. We start with a technical audit, then scope our part explicitly so it's clear what we own versus what your team owns.

What technologies do you use for frontend and backend?+

React or Vue on the frontend, Node.js or Python on the backend, depending on what fits the project. See the tech stack above for what we've actually shipped with.

Will the website be mobile-responsive and SEO-friendly?+

Yes. Responsive layout and crawlable, server-rendered content are part of every web development project we deliver, not an optional add-on.

Do you offer ongoing maintenance and support after launch?+

Yes, scoped separately from the initial build once the product is live.

Who owns the source code after the project ends?+

You do. There's no vendor lock-in on the code we write for you.

Need a web platform built right the first time?

Tell us what you're building: a new product, a rebuild, or an existing codebase that needs a team.

  • Mobile Development

    Native iOS/Android and cross-platform apps built for real users.

  • Custom Software Development

    Custom CRM, dealer management, and business software that runs real operations.

  • AI & Automation

    Automation and applied data/AI features integrated into real products.

  • SEO, AEO & GEO Optimization

    Technical SEO, structured data, and AI answer engine optimization built into your site.

  • MVP Development

    Fast, senior-built MVPs that stay solid enough to become the full product.

  • Dedicated Development Team

    Direct access to senior engineers, working as an extension of your team.

Shall we discuss your idea?
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Web DevelopmentMobile DevelopmentCustom Software DevelopmentAI & AutomationSEO, AEO & GEO OptimizationMVP DevelopmentDedicated Development TeamAPI Development & IntegrationQA & Software TestingCloud Deployment & InfrastructureLegacy Software ModernizationSoftware Architecture ConsultingE-commerce DevelopmentData Engineering & Analytics
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Our offices

Lamana St. 18, 49000 Dnipro, Ukraine

C. de Bailén, 41, Centro, 28005 Madrid, Spain — ILab

Kamelia 47, 8240 Sunny Beach, Bulgaria — R&D office

Contacts

sales@leetsoft.dev
+380 73 758 17 72
+34 663 00 35 61