From complex ideas to scalable digital products
From architecture to deployment, we design and develop reliable backend infrastructures that power growth, efficiency, and long-term stability.
About us
We don't just write code,
we build foundations.
We specialize in designing and developing custom software tailored to your business goals. From robust web platforms and scalable APIs to advanced AI and video recognition systems, our expertise spans the full technology stack.
We combine strong engineering principles with modern tools to build reliable, high-performance solutions that last.
Our Expertise
We turn complex challenges into elegant, scalable systems.
Increase Revenue
We help you turn technology into measurable profit. Through optimized user experiences, smart automation and scalable software design, your products attract more customers, retain them longer.
Understand Data
Transform raw data into insight and action. We design data pipelines, dashboards and AI models that give you a clear view of performance, customer behavior and operational trends.
Scale Systems
Your growth shouldn't be limited by your infrastructure. We build and optimize cloud architectures that handle increasing demand smoothly, ensuring high performance, reliability and cost efficiency as your business expands.
Futureproof Security
Security is built into everything we deliver. From authentication and encryption to access control and compliance, we design systems that protect data, users and reputation: ready to meet evolving security standards.
Optimize Delivery
Speed and quality go hand in hand. Our development process focuses on automation, CI/CD and agile practices to shorten release cycles, reduce downtime and deliver consistent value without compromising stability.
Expansion & Growth
We help you adapt your digital presence for new audiences and regions. Whether through localization, multi-currency support or tailored user experiences, we make your products ready for global reach.
Latest Projects
Real systems. Real impact.
Clasora
20,000+worldwide active users
A comprehensive e-learning platform connecting students with tutors worldwide. We built a scalable real-time matching system, video conferencing integration, and payment processing infrastructure supporting multiple currencies.
Voluntarius
10,000+worldwide active users
We redesigned the backend architecture to support multi-tenant operations and asynchronous event handling. The result: reduced API response time by 42% and enabled seamless scaling to thousands of concurrent users.
DuckPond
Growing platform
Describe a change to an app in plain words, try it in a live preview, and send it to the maintainers as a pull request. We built the AI agents that make the change, the sandboxed preview behind every request, and the GitHub pull request flow that keeps the maintainers in control of what ships.
Industries
Specialized solutions for industries we know best.
Tourism & Events
Event management platform and multilingual AI chatbot built for tourism boards, destination marketing organizations, hotels, and travel platforms.
Education
Learning management systems, student platforms, and educational technology solutions that enhance teaching and learning experiences.
Software & Developer Tools
AI-assisted development platforms, sandboxed preview environments, and GitHub-native tooling for open-source maintainers, software teams and developer-platform companies.
FAQ's
Your questions,
Explore our FAQs to learn more about our process, pricing, and how we can bring your vision to life. If there is still some questions you have, you can write us a email on office@c9group.dev
We focus on backend-heavy systems, from SaaS platforms and data infrastructures to complex integrations and custom APIs. If it requires thoughtful architecture, performance optimization, or large-scale deployment, it's in our zone.
Knowledge Hub
Articles & Insights
Data & CloudEuropean alternatives to AWS and Azure in 2026: 24 providers checked
The same two workloads priced on 24 cloud providers headquartered in Europe and on AWS and Azure in Frankfurt, then checked for what the price leaves out: zones, database standbys, ownership, SLAs and onboarding.
Data & CloudHetzner Cloud in 2026: a review for teams leaving AWS or Azure
A privately held German host with near-free bandwidth and dedicated servers next to the cloud, but no managed database, no managed Kubernetes, no availability zones and a hard 2026 for its prices and capacity.
Data & CloudOVHcloud in 2026: an honest review for teams leaving AWS or Azure
OVHcloud includes instance egress in every European region and sells everything from managed PostgreSQL to H100 GPUs, but outside Paris and Milan every region is a single zone.
Data & CloudScaleway in 2026: an honest review for teams leaving AWS or Azure
Of the European-controlled providers we checked, Scaleway has the widest catalogue of AWS-style managed services and charges nothing per gigabyte for egress, but its managed database keeps the standby in the same data centre.
Let's build a system that scales, and keeps working.
Whether you're scaling an existing system or starting from scratch, we'll help you design a product that's stable, fast, and future-proof.
Schedule a MeetingNo obligation. We reply within one business day.