Software development services in Bucharest
Cyber Den is a Bucharest software studio that ships production web applications, mobile apps and SaaS platforms — as your product team or as a white-label subcontracting partner when you need extra engineering capacity.
01What we do
A small studio with the range of a senior product org.
From a blank repo to a product in the App Store — or a white-label sprint for your agency — we cover the full surface so you can plug us in without months of ramp-up.
Full-stack products, shipped end to end
We take an idea from a blank repo to production — web, mobile and API. One senior team that owns architecture, delivery and the boring details that make software feel effortless.
- Web & mobile (React / React Native)
- Auth, payments, search & realtime
- Design systems & UI engineering
Turn a workflow into a business
Multi-tenant, billable, reliable. We've built QR-menu ordering, kindergarten ops platforms and pet-health systems — we know how to make a SaaS that scales and pays for itself.
- Multi-tenant architecture
- Subscriptions & Stripe / Viva billing
- Admin, analytics & audit trails
Infrastructure that scales quietly
Deployments, CI/CD, observability and cost control on AWS, Azure and beyond — set up once so your team can focus entirely on shipping.
- AWS · Azure · Docker · Terraform
- GitHub Actions & Azure Pipelines
- Hardening & security reviews
Live data, payments and the hard plumbing
Websockets, push notifications, payment rails and third-party carriers. The unglamorous integrations that make a product actually work in the real world.
- WebSockets & live order flows
- Stripe, Viva & carrier integrations
- Push notifications & i18n
02How we work
Plug in without months of ramp-up.
Agencies, startups and product companies hire us when they need senior engineers who can own delivery — not just tickets.
Subcontracting & white-label
You keep the client relationship. We join your Slack, match your process and ship under your brand — scoped sprints or ongoing capacity.
End-to-end product builds
From architecture through App Store and cloud deployment. One senior team owns the full stack so nothing falls between frontend and backend.
Scoped sprints
A fixed module, integration or MVP slice with a clear deliverable and timeline. Ideal when you need capacity for a specific milestone.
Need a scoped quote?
Tell us what you're building or the team you're scaling. We reply within 1–2 working days.