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Custom Software Development

DDI Development is a reliable provider of the web and mobile solutions for startups, nonprofits, big and middle size enterprises. With more than 100 completed projects under our belt, the team of versatile experts have enhanced the expertise in building e-learning platforms, recruitment and financial systems, CRMs and e-commerce web sources, etc.

  • Min project size
    $10,000+
  • Hourly rate
    $25 - $49 / hr
  • Employees
    50 - 249
  • Locations
    Warszawa, Poland
  • Year founded
    Founded 2007

1 Locations

  • Warszawa , Poland

Select Focus Area
Application Platforms
Amazon Application Development Framework
40%
Linux server
25%
Heroku
20%
Azure Platform
10%
Windows server
5%
Frameworks and CMS
Django
32%
.NET
11%
CodeIgniter
6%
Zend PHP
6%
Programming & Scripting
PHP
15%
Python
15%
ASP
10%
C#
10%
Java
10%
Objective C
10%
SQL
10%
AJAX
5%
Industries
Information technology
50%
Business services
20%
Education
15%
Financial services
15%
Clients
Small Business (<$10M)
80%
Midmarket ($10M - $1B)
20%

Pricing Snapshot

Min. project size $10,000+
Avg. hourly rate $25 - $49 /hr
Rating for cost 4.9 /5

Most Common Project Size

$50,000 - $199,999 based on 5 reviews
< $49,999 $50,000 - $199,999 $200,000 - $999,999 > $1,000,000

Select a service to see pricing information

Highly Rated Similar Providers

DDI Development Review Insights

Overall Review Rating

4.8
  • Quality 4.9
  • Schedule 4.6
  • Cost 4.9
  • Willing to Refer 4.9

Top Mentions

Review Highlights

  • Reliable in Challenging Conditions

    Despite challenging external conditions, DDI Development maintained reliable delivery and did not let circumstances affect their commitment to project timelines and quality, earning client trust.

  • Strong Client Relationships

    Clients appreciated DDI Development's commitment to acting as true partners, not just vendors. Their dedication to understanding client needs and providing personalized solutions fostered long-term collaborations and trust.

  • Flexible and Adaptable Approach

    DDI Development demonstrated flexibility in adapting to changing project requirements and client circumstances, maintaining project alignment and success even in challenging environments.

  • Positive Feedback and Client Satisfaction

    Clients expressed high satisfaction with DDI Development's work, citing positive feedback from end-users and stakeholders, reinforcing the company's reputation for delivering quality solutions.

  • Scalability and User Adoption

    Platforms developed by DDI Development were noted for their scalability and ease of use, leading to increased user adoption and course completion rates, particularly in Learning Management Systems.

  • Room for Improvement in Deliverables

    One review indicated potential room for improvement in the quality of deliverables and deadline management, suggesting that DDI Development could enhance consistency in these areas.

DDI Development Reviews

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DMS, Web App & Mobile App Dev & Design for Healthcare Firm

  • Custom Software Development Mobile App Development UX/UI Design
  • Amazon Application Development Framework
  • $50,000 to $199,999
  • July 2023 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"What truly sets DDI Development apart is how every team member is committed to the project's success."

Jan 29, 2026
CEO, CallCareForms
Benjamin K.
Verified
  • Other industries
  • Pittsburgh, Pennsylvania
  • 1-10 Employees
  • Online Review
  • Verified

DDI Development has developed and designed a Document Management System (DMS) for a healthcare firm. The team has created a form builder, a web app, a mobile app, and a permission-based access system.

LMS Platform Development for Project Mgmt Company

  • Digital Engineering UX/UI Design Web Development
  • Usability Testing
    +5
  • $50,000 to $199,999
  • Oct. 2024 - May 2025
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

“They were so proactive in anticipating our needs that they exceeded our expectations at every stage.”

Sep 12, 2025
IT Director, PMCentersUSA
Alex Kagan
Verified
  • Education
  • Pittsburgh, Pennsylvania
  • 11-50 Employees
  • Online Review
  • Verified

DDI Development built a new LMS platform for a project management company. The team created a fully functional system with all the required features. They also provided user guides and technical support.

Custom Software Dev for Mobile App Development Company

  • Custom Software Development Web Development
  • NodeJS
    +1
  • Confidential
  • Nov. 2022 - Sep. 2023
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"Their professionalism and responsiveness were instrumental in the project's success."

Jul 5, 2024
IT Partner, SOLIT
Srbuhi Simonyan
Verified
  • Other industries
  • Yerevan, Armenia
  • 11-50 Employees
  • Online Review
  • Verified

A mobile app development company hired DDI Development to design and develop a custom document management system. The team integrated advanced features and ensured robust security protocols.

Frontend and Backend Development for e-Commerce Provider

  • E-Commerce Development
  • $10,000 to $49,999
  • Feb. 2016 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They have been able to solve problems where other web developers had failed."

Feb 1, 2017
CEO, Bluehack
Marco Dallatomasina
Verified
  • Other industries
  • Genoa, Italy
  • 1-10 Employees
  • Online Review
  • Verified

DDI Development provides long-term technical repair solutions for an e-commerce site’s frontend and backend. They currently manage QA and web updates while adding developers and advising transitions.

Platform Development For Boutique Management Consultancy

  • Web Development
  • Confidential
4.0
Quality
4.0
Schedule
3.0
Cost
4.5
Willing to Refer
4.5

"They're able and willing to be flexible with their clients."

Nov 18, 2015
Founder, We Build Concepts
Foris Hoppe
Verified
  • Other industries
  • Amsterdam, Netherlands
  • 1-10 Employees
  • Phone Interview
  • Verified

DDI Development lent development skills to a management company's database and platform back-end. The project primarily involved work in PHP, JavaScript, and Angular JS.

Developed E-Learning Platform For Education Startup

  • Custom Software Development
  • $200,000 to $999,999
4.5
Quality
5.0
Schedule
4.5
Cost
5.0
Willing to Refer
5.0

"DDI built an award-winning platform certified by the UN."

Nov 11, 2015
Commercial Director, Educational Startup
Anonymous
Verified
  • Education
  • London, England
  • 1-10 Employees
  • Phone Interview
  • Verified

DDI Development built an e-learning web platform for a management company. Projects mainly involved wireframing, front- and back-end development, API integration, and quality assurance.

Mobile App Development & Design for Fitness Company

  • Application Testing Mobile App Development UX/UI Design
  • $50,000 to $199,999
  • Apr. 2024 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They don't just execute the plan; they act as true technical partners."

Mar 5, 2026
Executive, RuckIt Fitness
Anonymous
  • Information technology
  • Richmond, Virginia
  • 1-10 Employees
  • Online Review

DDI Development has been hired to develop a mobile fitness app for iOS and watchOS using Swift and SwiftUI. The team has also built the app's UX and features, including a subscription management system.

Showing 1-7 of 7 Reviews

Locations (1)

Humańska 8 WarszawaPoland 00-789

50 - 75

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ConsultUSA

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Alex Kagan

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