Discovery
Clarify the business context, users, constraints, and existing technical landscape.
Independent IT engineering
Technology built for useful work.
CET Leonhardt GmbH designs and develops dependable digital systems—from focused software products to connected infrastructure.
Company overview
Clear thinking for complex technical systems.
CET Leonhardt GmbH works at the point where software, operations, and business processes meet. The focus is practical: understand the real problem, reduce avoidable complexity, and create systems that remain understandable after delivery.
Areas of expertise
01
Custom software
02
Web applications
03
Cloud & infrastructure
04
Systems integration
05
Workflow automation
06
Technical consulting
Custom software development
Software shaped around the work—not the other way around.
Purpose-built applications can replace fragmented tools, clarify operational workflows, and create a stable foundation for new capabilities. Delivery may include discovery, architecture, interface design, implementation, testing, documentation, and deployment planning.
Web application engineering
Accessible interfaces. Durable foundations.
Web applications are engineered as complete systems: responsive user interfaces, secure data flows, reliable service boundaries, and maintainable deployment practices.
Attention extends beyond feature delivery to keyboard access, readable content structures, predictable behavior, and performance across real devices.
Cloud & infrastructure
Operational clarity from environment to deployment.
Infrastructure work can include environment design, deployment workflows, service configuration, observability, backup planning, and technical documentation.
Integration & automation
Connect systems. Remove repetitive friction.
Integration work helps information move consistently between applications, services, and teams. Workflow automation can reduce manual transfer, establish validation, and make exceptions easier to see and resolve.
Interfaces
APIs and service boundaries
Data flows
Validation and transformation
Operations
Repeatable workflows
Security-conscious engineering
Security considered throughout delivery.
Security is treated as an engineering concern rather than a final checklist. Relevant practices may include dependency review, least-privilege access, input validation, secrets handling, safe defaults, and documented operational responsibilities.
The appropriate controls depend on the system, data, threat model, and operating environment.
Delivery process
A visible path from context to dependable operation.
Planning
Translate priorities into a practical architecture, delivery sequence, and definition of quality.
Development
Build in reviewable increments with clear interfaces, documentation, and version control.
Testing
Verify behavior, accessibility, security assumptions, and operational readiness.
Support
Maintain, observe, and evolve the delivered system as requirements change.
Illustrative use cases
Examples of where focused engineering can help.
These are illustrative scenarios, not claims about completed client projects.
A shared operational workspace
Replace scattered spreadsheets with a controlled application for review, status tracking, and structured handovers.
Connected business systems
Synchronize selected records between established tools while making failures and exceptions visible.
A staged platform renewal
Reduce risk by replacing an aging system in deliberate increments rather than through one disruptive change.
Engineering principles
Quality that can be understood and maintained.
- Simple boundaries before clever abstractions
- Accessibility as a core quality attribute
- Testing proportionate to risk
- Documentation close to decisions
- Observable behavior in production
Collaboration
Direct communication, explicit decisions.
Effective technical work depends on shared context. Collaboration is structured around clear written decisions, regular review points, visible risks, and language suited to both technical and business participants.
Frequently asked questions
Practical questions, answered directly.
What kinds of projects can CET Leonhardt GmbH support?
The offering covers custom software, browser-based applications, infrastructure, integration, automation, technical consulting, and ongoing maintenance.
Can work begin with an existing system?
Yes. An engagement can start with a review of an established codebase, infrastructure environment, integration landscape, or workflow.
How is project scope defined?
Scope is shaped around business priorities, technical constraints, dependencies, delivery risks, and the level of certainty available at the outset.
Is ongoing support available?
Maintenance and support can be planned alongside delivery, including updates, issue investigation, documentation, and measured improvements.
Contact information