Backend engineering
Build the foundations your product needs. We design and develop APIs, business logic and data models, or extend the systems you already have.
- Python, FastAPI & Django
- SQLAlchemy & PostgreSQL
- Custom web applications
Independent software engineering
Backend engineering, integrations and production support to help your team build, connect and run dependable software.




Build something new, connect existing systems or bring experienced engineers into your team. We help you move the work forward.
Build the foundations your product needs. We design and develop APIs, business logic and data models, or extend the systems you already have.
Make your systems work together. Connect payments, booking platforms and third-party services, with the failure handling real workflows need.
Understand what is failing and why. We investigate backend issues, maintain existing applications and help make releases more dependable.
Move a defined piece of work forward or bring us into your team. Work directly with engineers who can connect implementation with delivery.
Engineering experience
Our founder brings hands-on experience in digital insurance and industrial software to every engagement.

Digital insurance
Backend engineering & delivery leadership
Payments, claims and quote processing. FastAPI, SQLAlchemy and AWS, alongside team and release management.
Explore the contributionIndustrial software
L3 support engineering
L3 support engineering and backend development, with experience of DeviceLink agents and the demands of supporting software in use.
Explore the contributionA selection of our contributions to wider products and the applications we’ve built for businesses.

T3K / LEAP
Python and FastAPI backend contribution within the wider product team.

SpeedFit
Payment integration and business-process automation.
A small team, direct communication and a practical approach to getting useful software into people’s hands.
We discuss the outcome, review the existing system and identify the constraints that shape the work.
You get a clear scope, sensible milestones and the trade-offs behind our technical choices.
Working software and regular feedback keep progress visible and decisions close to your team.
Tests, documentation and release support help your team use, operate and extend what we build.
Have something more specific in mind?
Reach out
Yes. We can review the relevant parts of your application, understand its constraints and agree a focused piece of work, from extending an API to investigating a production issue.
We can deliver a defined scope or work alongside your engineers. The engagement can include backend development, integrations, maintenance or technical delivery coordination.
Python, FastAPI and Django are central to our backend work, supported by SQLAlchemy, PostgreSQL and AWS. We also build with TypeScript, React and Next.js where the project calls for them.
Raddiene is based in Croatia and works remotely with international teams, including UK and US businesses. We agree communication routines and working-hour overlap around the engagement.