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Yellow! GNU is a Romanian software engineering and project delivery company within the Matrix Rom group, building on more than 30 years of experience in business and enterprise software development.
We help startups, growing businesses and enterprises design, develop, integrate and modernize software systems. Our focus is on practical engineering, dependable delivery and long-term technical partnerships.
Our projects are delivered through our own engineering team and shared technical resources across the Matrix Rom group, combining dedicated project ownership with broader technical expertise.
Our Core Expertise
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Custom Software Development: Enterprise applications, backend platforms, SaaS solutions, REST APIs and legacy modernization.
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Fintech & Open Banking: Banking API integration, consent management, secure financial data connectivity and processing.
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Web & Mobile Applications: Enterprise portals, dashboards, Android, iOS and cross-platform solutions.
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Data Engineering & Applied AI: Database migration, data integration, AI-assisted matching, intelligent workflows and proof-of-concept development.
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Cloud & Connected Systems: Cloud-native applications, system integration, IoT and connected-device platforms.
Technologies: Java, Spring Boot, C++, C#, .NET, Angular, React, PHP, Laravel, SQL, Oracle, Cassandra, Kotlin and Swift.
Engagement Models
We offer independent project delivery, dedicated engineering teams and technical consulting for software modernization and integration.
Our combined experience spans fintech, healthcare, construction, telecommunications, e-commerce and enterprise software.
For the Israeli market, we collaborate with Software Outsourcing, our local business development partner.
Yellow! GNU — Engineering Expertise. Reliable Delivery.
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Min project size
$5,000+
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Hourly rate
$25 - $49 / hr
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Employees
10 - 49
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Locations
București, Romania
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Year founded
Founded 2017
1 Locations
- București , Romania
Service Lines
- Web Development
- 15%
Select Focus Area
- Application Platforms
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- Amazon Application Development Framework
- 20%
- Azure Platform
- 20%
- Windows server
- 20%
- Linux server
- 10%
- Other app platform
- 10%
- Cloud Computing Focus
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- Google Cloud
- 35%
- AWS Consulting Services
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- AWS DevOps
- 20%
- AWS IoT
- 20%
- AWS Managed Cloud
- 20%
- AWS Migrations
- 20%
- AWS Security
- 20%
- Azure Consulting Services
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- Azure DevOps
- 20%
- Azure Development
- 20%
- Azure IoT
- 20%
- Azure Migrations
- 20%
- Azure Security
- 20%
- CMS Focus
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- WordPress CMS
- 85%
- Joomla CMS
- 5%
- Wix CMS
- 5%
- Cybersecurity focus
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- Cloud Security
- 35%
- Cybersecurity Technologies
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- SecureAuth
- 55%
- Auth0
- 35%
- Okta
- 10%
- E-commerce Systems
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- WooCommerce
- 75%
- Magento
- 10%
- Other ecommerce systems
- 10%
- PrestaShop
- 5%
- Frameworks and CMS
- Mobile Focus
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- Consumer Mobile App Development
- 10%
- Enterprise Mobile App Development
- 10%
- Mobile Commerce
- 10%
- Mobile Platforms
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- Programming & Scripting
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- AJAX
- 20%
- C#
- 20%
- HTML5
- 20%
- JavaScript
- 20%
- PHP
- 20%
Industries
- Information technology
- 25%
- Financial services
- 20%
- Education
- 15%
- Automotive
- 10%
- Business services
- 10%
- Medical
- 10%
- Sports
- 5%
- Supply Chain, Logistics, and Transport
- 5%
Clients
- Small Business (<$10M)
- 70%
- Midmarket ($10M - $1B)
- 25%
- Enterprise (>$1B)
- 5%
Pricing Snapshot
Min. project size
$5,000+
Avg. hourly rate
$25 - $49
/hr
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Packages we offer:
Custom Web Application
We deliver modern web applications tailored to your business goals. Start simple with WordPress, scale with WooCommerce, or build a custom Laravel solution. Perfect for service-based businesses, online stores, or startups growing into platforms.
Small
small businesses online presence or custom CMS
$4,500
/total
Medium
web site with product catalog, cart, and order
$10,500
/total
Large
Custom application, full control, business logic
$19,000
/total
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Our Story
Yellow! GNU was established in 2017 as part of the Matrix Rom group, building on over 30 years of software engineering experience. We bring together our own developers and shared engineering resources to deliver reliable software solutions for international clients. We believe in collaborative problem-solving, knowledge sharing and long-term partnerships. From enterprise integrations to web, mobile and connected platforms, our goal is to build technology that delivers real business value.
What Sets Us Apart
Engineering Heritage
30+ years of combined software engineering experience through Matrix Rom.Collaborative Delivery
One coordinated engineering team combining Yellow! GNU and Matrix Rom expertise.Enterprise Integration Expertise
Proven experience with complex backend systems, financial APIs and connected platforms.Locations (1)
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