Enterprise Applications, Backends & APIs
Business logic your company can rely on.
When a critical process depends on a long-established application, a new user interface alone is not enough. We develop enterprise applications, backends and APIs that implement your business rules reliably. Clear data models, traceable permissions and testable interfaces provide the foundation for new products and more efficient workflows.

Your options
Services that move your project forward
Model business processes
We translate business rules, exceptions and responsibilities into an understandable model. Conflicting requirements are clarified before their technical implementation.
A shared understanding across business specialists, developers and the acceptance team.
Backend and domain logic
We develop services with clear responsibilities and appropriate transaction boundaries. Cases of error and simultaneous changes are dealt with explicitly.
Important business transactions remain traceable even with complex processes.
APIs for products and partners
APIs have documented contracts, versioning rules and appropriate access controls. Usage limits and error responses are part of the design.
Internal teams and partners can integrate your functions in a targeted manner.
Data and migration
We plan data models, data quality checks and migration together. Reconciliation and fallback procedures reduce the risk of an uncontrolled cutover.
An auditable transition from existing data to the new application.
Performance and operability
We examine relevant load profiles and bottlenecks. Logging, metrics and business validation checks support ongoing operations.
You can assess agreed operational targets using specific test results.
Delivery and maintainability
Automated tests, documented architecture decisions and repeatable deployments accompany development. Operational knowledge is transferred to the responsible team.
An application that can be operated and further developed in an orderly manner.
Where to start
Enterprise Applications, Backends & APIs Use cases
Three example situations show how we can help.
Replace core manual processes
Today, price calculation, approvals or order processing are coordinated in tables. A specialist application bundles rules and work steps with comprehensible statuses.
Enabling new digital products
An existing system is to supply new channels. A suitable backend provides central functions and separates product logic from individual interfaces.
Extend Critical Application
New business areas require additional rules and interfaces. We delineate changes and secure existing processes with suitable regression tests.
From requirements to results
A clear process with agreed milestones
Understand the business domain
Together, we look at processes, exceptions, data, and critical decisions.
Define architecture
We document system boundaries, interfaces, quality goals and the first feasible stage.
Deliver features
Working functionality is delivered in agreed stages, with tests and demonstrations of the business workflows.
Prepare for operation
Load checks, migration, documentation and responsibilities are coordinated before the start of production.
Your benefit
What you receive
- An agreed domain model and prioritized requirements.
- Backend functions and documented interfaces.
- Auditable migration and testing for agreed business processes.
- Architecture and operational documentation for your teams.
Ways to work with us
Choose a starting point that fits your needs. We agree the scope and required effort in a tailored proposal.
Backend and API design
For a sound decision: business boundaries, quality goals and an implementable architecture proposal.
Request a quote: Backend and API designApplication development
For a specific product: Implementation of coordinated business processes, APIs, tests and handover to operations.
Request a quote: Application developmentTargeted enhancements
For existing systems: additional functions, interfaces or the elimination of a known bottleneck.
Request a quote: Targeted enhancementsSYNEDAT PLATFORM
Platform experience for your project
We use these selected tools in SYNEDAT PLATFORM or its delivery processes. We adapt suitable practices to your project and align their integration with your existing systems.
From source code to verified artifacts
Azure DevOps · GitLab · Jenkins · Harbor · Nexus
Version control, build processes and artifact repositories make software versions traceable. Our platform approach connects these activities with defined checks and approvals. For your project, we select tools that fit your teams and existing processes.
A clear delivery process and traceable software versions.
Developer access and shared knowledge
Backstage · code-server · Structurizr · Swagger UI
A service catalog, suitable development environments, architecture views and API documentation help teams find their way and work together. The focus is on useful workflows and maintained information. An additional portal alone does not remove an organizational bottleneck.
Less time searching and an easier start for development teams.
Quality and the software supply chain
SonarQube · Trivy · Dependency-Track · DefectDojo · Renovate · Syft · Cosign
Code quality, vulnerabilities, dependencies and artifact provenance require different checks. Findings need to be linked to the product and delivered version, with a defined process for resolving them. Automated checks complement reviews and informed decisions.
Security and quality information that teams can act on.
Questions before you get started
Can you work within our existing architecture?
Yes. We examine the existing technology, quality goals and dependencies. An enhancement can focus on a defined area. Required preparation and known risks are stated in the proposal.
How do you ensure correct business behavior?
We develop concrete examples and acceptance criteria with the responsible specialists. Automated tests and regular demonstrations check important rules and exceptional cases. Open decisions are documented.
Is a fixed price possible?
For a sufficiently defined scope, a suitable contract model can be discussed. If there are open requirements, an analysis or a step-by-step approach with a transparent backlog and agreed budgets is recommended first.
How do you deal with complex approval workflows and exceptions?
We describe states, roles and permissible transitions together with the department. Particularly critical exceptions are given concrete examples and tests. This makes it possible to understand rules that were previously only known to individual employees.
Can the application handle high load peaks?
We agree realistic load profiles and acceptable response times, then assess them with appropriate tests. Scaling, database access and background processing are designed accordingly. Performance commitments must be based on the actual workload.
How do you verify data migration?
We examine sources, field mappings and data quality issues in advance. Trial migrations, record counts and business checks on representative samples verify the result. Cutover windows and fallback procedures are agreed with the responsible teams.
Can our developers collaborate on the implementation?
Yes. We coordinate responsibilities, reviews, development standards and joint working methods. Joint implementation and targeted knowledge transfer help your team to continue the architecture and functions afterwards.
Who will be responsible for maintenance and operation after launch?
This is agreed before the introduction. Your internal teams can take over the operation; additional support can be arranged separately. Documentation, access, monitoring and escalation channels are handed over according to the selected model.
Discuss your next step
Which business logic needs a better technical basis?
Outline the process and today's application. We clarify which development or extension best supports your goals.
Enterprise Applications, Backends & APIs
Your next step
Tell us what you need. We will route your enquiry to the right team and discuss the next steps with you.
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