Software development company
For more than 15 years, we have built web, mobile and cloud applications. Our engineers combine deep expertise with AI and modern tools to deliver reliable software quickly.
Sofia, Bulgaria · European Union
AI and modern engineering
Tools we use
Claude CodeOur team keeps pace with advances in AI and software development. We use AI coding tools such as Claude Code and Codex to understand existing code, build prototypes, write code and tests, review changes and keep documentation up to date. We also manage multiple AI agents that work in parallel on separate tasks. Our engineers draw on their experience to decide how to apply these tools, oversee the agents' work and check the results, and every release to production needs their approval. This helps us choose the right approach, solve complex problems and deliver reliable software quickly.
Services and technologies
We build new products, add engineers to existing teams and support software that is already running.
Claude CodeBusiness systems, customer portals and back-office tools built around your workflows.
iOS and Android apps for phones and tablets, native or cross-platform, connected to your back-end systems.
Front-end & back-end
Mobile
AI services
We build and deploy applications on Google Cloud and Microsoft Azure, with Docker and Kubernetes, and connect them to your other systems.
Cloud and DevOps
Data and blockchain
We maintain and improve the software we build, adding new features and adapting it as your business needs evolve.
Communication channels
Some of our
clients
VaubanOur work
We have built software for clients in healthcare, city parking, telecoms, TV and music, agriculture, finance and retail, and our own product for education.
Accepted · Education · Our own product
Accepted (getaccepted.io (opens in a new tab)) is our own product. It helps International Baccalaureate (IB) and A-level students choose universities and prepare their applications. Where entry requirements are recorded, it compares them with the student's subjects and predicted grades. Students can use it on their own or with their school. If their school uses Accepted, their counsellor can see their profile and shortlist.
Telelink City Services · City parking · Bulgaria
We built a parking system for one of the largest cities in Bulgaria, hosted on Microsoft Azure. Drivers paid for parking in a mobile app or by SMS, and residents and businesses managed their parking subscriptions online. The operator's teams ran customer service, accounting and the call centre from one back office, and used mobile apps in the street.
emedSwiss · Healthcare · Switzerland
We develop the software that emedSwiss offers as emedSaaS. emedSaaS is a Swiss platform that digitalizes medical and administrative work in outpatient medicine and home care. Patients, doctors, nurses, therapists and other care providers share medical data in real time.
The platform runs in a web browser and on phones and tablets, in French, German, English and Italian. It is hosted in Switzerland on Kubernetes. Users sign in through a Swiss healthcare identity service, and the platform exchanges data with health insurers and receives laboratory results directly.
Switzerland
emedBilling is medical billing software for doctors and medical practices in Switzerland. We took over its maintenance and development. We improved the billing process to bring it up to the standard of Switzerland's leading medical billing software, and we keep developing new features.
Bulgaria / United Kingdom
Native iOS and Android phone and tablet apps for a telecom operator's OTT service, which streamed TV over the internet. Viewers could watch live and catch-up TV, use the TV guide and choose video on demand. The apps connected to the Minerva TV platform and played video protected by digital rights management (DRM).
Switzerland
ADA, a platform for the secure, private exchange of Swiss farm data, with a mobile authorization app. Built with Kubernetes and Hyperledger Fabric.
Bulgaria / United Kingdom
A platform that distributes music to online stores and mobile partners worldwide, with label, artist and report management. Built with Angular and CodeIgniter.
Switzerland
A web-based medical record system for long-term anti-ageing and preventive treatment.
Ireland
A data warehouse that turns foreign exchange (Forex) trading data into business reports. Built with Java, Oracle and IBM Db2.
Switzerland
A website and content management system.
Switzerland
An events and meetings module for a B2B trading marketplace. Built with Meteor.
Bulgaria
A corporate website, online tools and a speed-test app for Blizoo, a Bulgarian telecom operator.
Switzerland
A loyalty system that shops and brands share, with a point-of-sale app, a customer portal and an administration module. Built with Java EE.
About us
SunnySoft (Sunny Soft Ltd.) has been developing software in Sofia, Bulgaria, since 2008. We work with international clients and have built software for companies in Switzerland, the United Kingdom, Ireland and Bulgaria.
We build custom applications that need careful business analysis and complex system design, and we support them after launch.
How we work
How we start, the two ways we can work together, and support after launch.
Tell us about your business, your users and what you want to change. Together we agree on the next step.
We work at a fixed price when your requirements are clear and you want us to deliver the whole application. We work on a time and materials basis when the scope is still being defined or for long-term projects. This gives you flexibility to adjust requirements and priorities as the project evolves.
After launch, we maintain, support and improve the software.
Contact
Tell us about your project: a new mobile app, a web platform or engineers to join your team. We'll get back to you by email.
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