The backbone of your application.
Built cleanly, whatever the stack.
Whether it's a webshop, an internal tool, or a system that needs to serve a small restaurant just as well as an industrial company, our team is not locked into .NET alone. We build backends and APIs with .NET/C# or Python, whichever fits your existing landscape and requirements.
Why Zeitcode for backend & APIs
Polyglot development, not single-stack thinking. We pick the technology based on your problem, not the other way around.
.NET and Python, not either-or
Enterprise microservices in .NET/C#, data-heavy processing or AI integration often in Python. We use what actually fits your task instead of forcing every problem into one stack.
Authentication that holds up
Federation-based authentication, cleanly separated permissions, and interfaces that survive a security audit — drawn from projects in banking and insurance.
Services that scale independently
Instead of one monolithic block: clearly cut services that deploy independently and scale on their own when needed.
Third-party integrations without drama
Payment providers, ERP, CRM, or industry-specific systems: we have experience wiring up all kinds of external interfaces cleanly and maintainably.
A backend that doesn't slow your frontend down
Fast, well-documented interfaces, whether it's Next.js, Flutter, or a third party consuming them.
Fast response times under load
Efficient data processing, thoughtful caching, and database access patterns that stay performant as data volume grows.
Clear, documented APIs
REST or GraphQL interfaces with clear structure and documentation, so your frontend team or external partners can work with them productively.
Microservices where they make sense
Not every project needs ten services. We choose granularity to match team size and complexity, not to follow a trend.
Data-heavy processes under control
Python-based processing of large data volumes, optimized build and batch pipelines when standard frameworks hit their limits.
How your backend project runs
Four phases, from requirements to production.
Phase 1
AnalysisRequirements & data model
- ✓Clarify functional requirements and interfaces
- ✓Define the data model and system boundaries
Phase 2
ArchitectureStack choice & service boundaries
- ✓.NET or Python chosen by requirement, not preference
- ✓Services and interfaces clearly scoped
Phase 3
ImplementationAPIs, tests, security review
- ✓Implementation with automated tests
- ✓Security review before go-live
Phase 4
Go-liveDeployment & hand-off
- ✓CI/CD integration and production rollout
- ✓Documentation and technical hand-off
Step by step, with clear outcomes per phase.
Voices from backend projects
Short excerpts from projects with strict requirements on performance and security.
“Our old interface had grown organically for years and was barely documentable. The new API is clearly structured, our frontend team gets by without follow-up questions, and adding new endpoints no longer costs us any nerves.”
“We were unsure whether Python could handle our volume. Processing now runs noticeably faster than before, and the code is cleaner than our old setup ever was.”
- ✓Clear APIs frontend teams can use without follow-up questions
- ✓Stable performance even as data volume grows
- ✓No stack dogma — just the right choice for the problem
Services in detail
From a brand-new API to modernizing a backend that's grown out of control.
API & backend from scratch
A new backend for a website, app, or internal system — whether a webshop, a booking system, or an industry-specific tool.
- ✓Data model and API design from a single team
- ✓Stack choice by requirement, not by trend
- ✓Tests and documentation from day one
Third-party system integrations
Connections to payment providers, ERP, CRM, or industry software, cleanly encapsulated instead of bolted on as a special case.
- ✓Robust error handling for external outages
- ✓Clear ownership boundaries between systems
- ✓Traceable logging when things go wrong
Rework an existing backend
Refactor a backend that has grown hard to maintain, or migrate it step by step onto a more modern stack.
- ✓Incremental modernization instead of a risky rebuild
- ✓Technical debt reduced deliberately
- ✓Live operations stay stable throughout
Questions about backend & APIs
Answers on stack choice, security, and the typical project flow.
Still have a question?