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

Custom Software Development Built Around Your Business Systems

We build custom software that runs real operations: a CRM platform powering a multi-location auto-service network, and a cloud-native dealer management platform spanning inventory, sales, service, and CRM across multiple regions. Our custom software development services leave you with working software, and source code, that you actually control.

Custom software development services we provide

01
CRM development
Customer management, scheduling, and service tracking built around how your team actually works. We built exactly this for a Prague auto-service network.
02
Dealer & inventory management systems
Multi-module platforms covering inventory, sales, service, and spare parts across regions, not a single-location tool stretched too far.
03
Backend architecture & API design
Data models and service boundaries decided deliberately, weighing monolith against microservices and single-tenant against multi-tenant instead of defaulting to a template.
04
Third-party & legacy integrations
Connecting new software to ERP, telephony, messaging, or existing databases without breaking what already works.
05
Legacy system modernization
Taking over an existing codebase, assessing what's salvageable, and modernizing it without a risky full rewrite where one isn't needed.
06
Cloud deployment & scalability
Containerized, cloud-native deployment built to handle growth across locations or regions from day one.

When companies come to us for custom software development

Off-the-shelf tools stop fitting the business. Spreadsheets and generic SaaS products can't model how the operation actually works anymore, and every workaround adds more risk.

Data lives in silos across locations, teams, or systems that don't talk to each other, which makes reporting and day-to-day operations harder than they should be.

A previous system needs modernizing. The business logic is right, but the codebase can't be extended safely without breaking something else.

Multiple systems need to become one. CRM, inventory, and operations data end up spread across tools that should really be a single custom software platform.

DriveLab

CRM development for a Prague auto-service network

Customer management, appointment scheduling, service tracking, and business analytics for a network of auto service centers, with real-time data synchronization across every location.

React · TypeScript · Node.js · PostgreSQL · Redis

Read the case study

Zeekr DMS

Multi-region dealer management system

A cloud-native dealer management platform for Zeekr Ukraine, covering inventory, sales, service, spare parts, and CRM, with ERP, telephony, and messenger integrations delivered across a multi-region dealer network on two-week sprints.

React · Python · ERP Integration · Containerized Services

Read the case study

How we approach architecture decisions

Every custom software development project starts with the same question: what shape does this system actually need? Monolith versus microservices, single-tenant versus multi-tenant, build versus integrate an existing tool. These decisions get made explicitly, based on your scale and team, instead of defaulting to whatever happens to be trendy.

On the Zeekr DMS platform, that meant containerized services sharing a core, with configuration handled per dealer rather than a separate deployment for every location. It's the kind of decision that's cheap to make correctly upfront and expensive to unwind later.

What a CRM that actually fits changes

Does business software pay for itself? For most teams, yes, when it's built around how the operation actually works instead of being bent to fit a generic template.

+29%
+34%
+42%
SalesTeam productivityForecast accuracy

Reported average improvement after CRM adoption. Source: CRM adoption research, widely cited across industry reports, 2025

Tech stack

Technologies used to build a responsive CRM platform with real-time synchronization and business analytics.

Frontend
React, TypeScript, Responsive UI
Backend
Node.js, Express
Database
PostgreSQL, Redis
Infrastructure
Cloud Hosting, Real-time Sync

Our engagement model

  1. 01

    Discovery & technical audit

    Understand the current systems, data model, and what the software actually needs to do.

  2. 02

    Architecture & scope

    Explicit decisions on system shape, integrations, and delivery phases, agreed before development starts.

  3. 03

    Development

    Sprint-based delivery, with a two-week cadence on our multi-region work, backed by regular working builds.

  4. 04

    QA & integration testing

    Testing against real data flows and third-party integrations, not just isolated units.

  5. 05

    Deployment

    Cloud rollout, with a rollback plan and monitoring in place before go-live.

  6. 06

    Support & scaling

    Ongoing support scoped separately once the system is live, including scaling to new locations or regions as needed.

Security, compliance, and code ownership

You own the source code we write. There's no license lock-in and no dependency on us continuing to work with you after handoff.

Data handling, including access control, storage, and what actually gets collected, is scoped explicitly at the discovery stage and matched to what the project genuinely requires rather than a generic checklist.

Frequently asked questions

How much does custom software development cost?+

It depends on scope and integrations. A single CRM module and a multi-region dealer platform are very different projects, so we give a real estimate after discovery.

Who owns the source code and IP after the project ends?+

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

Can you integrate with our existing systems, such as ERP, CRM, or legacy databases?+

Yes. We've built ERP, telephony, and messenger integrations into a live multi-region platform.

Can you take over or modernize an existing legacy codebase?+

Yes. We assess what's salvageable first and favor modernization over a risky full rewrite whenever that's the right call.

What engagement models do you offer?+

Project-based delivery for well-scoped builds, or an ongoing dedicated team for systems that keep evolving after launch.

Do you provide support and maintenance after launch?+

Yes, scoped separately once the system is live.

Need custom software built around how your business actually runs?

Tell us what systems you're working with and what's not fitting anymore.

  • Web Development

    Frontend, backend, CMS, and API work for production web platforms.

  • Mobile Development

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

  • 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?
Logoleetsoft

All rights reserved

Company

TeamWorkPrivacy Policy

Services

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
View all services & industries →

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