We architect, secure
and scale backend
systems.
Rudolf Run Ltd is an enterprise software architecture and security consultancy. We help organizations stabilize complex systems, harden security posture and modernize technology at scale.
What We Deliver
Deep expertise across the full spectrum of backend engineering — from architecture design and application security to production performance and cloud infrastructure.
Software Architecture
Design and implementation of scalable, maintainable backend architectures — from API-first design to distributed systems handling millions of daily requests.
- API-first & service-oriented design
- Multi-tenant platform architecture
- Distributed systems & microservices
- Technical governance & code quality
Application Security
Security-by-design methodology for systems in compliance-sensitive, high-trust environments — penetration-tested with consistently minimal findings.
- Authentication & authorization (JWT, OpenID, TOTP, API Keys)
- API hardening & threat mitigation
- Security audits & merge request reviews
- Encryption & secure data handling
Technical Consulting
Strategic advisory and hands-on delivery for organizations facing complex technical challenges — from project recovery to long-term embedded engineering partnerships.
- System stabilization & project recovery
- Requirements engineering
- Quality assurance & CI/CD strategy
- Team onboarding & knowledge transfer
Cloud Architecture
Cloud-native and hybrid architecture design with deep AWS expertise — including serverless, container orchestration and live database migrations.
- AWS infrastructure (RDS, ECS, Lambda)
- Serverless & container architectures
- Database migration under live production
- Cost optimization & scaling strategies
Performance Engineering
Optimization of system throughput, search performance and resource utilization — proven on platforms processing more than 3 million API requests daily.
- Full-text search & database query optimization
- Database performance analysis
- Backend profiling & bottleneck resolution
- Caching & data access strategies
System Modernization
Legacy system migration and code modernization without disrupting production — including major database migrations (MS SQL → MarkLogic → AWS RDS).
- Legacy code refactoring
- Incremental migration strategies
- Technology stack upgrades
- Zero-downtime transformation
Enterprise Expertise, Delivered Independently
We combine the depth of a senior architecture practice with the agility and directness of an independent consultancy.
Rudolf Run Ltd was founded to provide enterprise organizations with direct access to senior-level software architecture and security expertise — without the overhead of large consultancies.
Our engagements are built on long-term trust and measurable impact. We don't advise from the sidelines — we take ownership of critical systems, write production code, and serve as the quality and security gate. Our flagship enterprise engagement started as a three-month project recovery and has grown into 8+ years of architecture leadership.
From unblocking delayed projects to serving as the long-term architecture backbone, our track record — spanning global industrial corporations, DAX-30 board software, healthcare platforms, industrial logistics and e-commerce systems — demonstrates that deep expertise and hands-on commitment deliver results that scale.
Hands-On Delivery
Architecture and production code, not just slides
Long-Term Ownership
8+ years in our flagship enterprise engagement
Security-First
Every decision evaluated through a security lens
Enterprise Proven
Platforms with >3M daily API requests, DAX-30 clients
Software Engineering
Clients Served
Covered
Platform Operations
Selected Projects
A selection of project engagements across enterprise architecture, security and system modernization.
Backend architecture, security and performance ownership for a global multi-tenant enterprise platform processing more than 3 million API requests daily across multiple time zones. Stabilization of a delayed project, followed by ongoing architecture leadership. Responsible for backend architecture decisions, database migrations (MS SQL → MarkLogic → AWS RDS/MySQL), authentication design (JWT, OpenID, TOTP, API Keys), API hardening and serving as the primary quality and security gate for all merge requests.
Cross-platform secure cloud storage applications for iOS, Android, Windows Store and Windows Desktop — deployed in compliance-sensitive environments at DAX-30 corporations. End-to-end encryption under strict German data protection standards, modular architecture with swappable platform implementations and high testability. Fully automated CI/CD pipelines with static analysis, unit tests, complexity metrics, gated check-in, cloud UI testing and beta distribution.
Software for an innovative medical prevention device, integrating multiple clinical sensors — ECG, weight, blood pressure, bone density and Kinect-based body measurement — into a multi-display touchscreen interface. Plugin architecture with MEF/Prism for extensibility, real-time video stream projection with matrix distortion, and Bluetooth/USB/COM-Port device communication. Deployed at multiple major German automotive corporations.
Full-scale ERP and warehouse management system covering the entire business process chain — from order intake and production planning to high-bay warehouse picking optimized by route, frequency, FIFO and batch logic. Intelligent order suggestions based on historical sales data accounting for seasonality and perishable goods. Dashboards, analytics, BMECAT/DATEV exports, Outlook integration and scheduled server processes. Approximately one million lines of code serving around 50 concurrent users.
Multilingual webshop system on ASP.NET with complex pricing models, separate B2B and B2C entry points, and role-specific views and workflows. Voucher and discount systems, cross-selling, bestsellers, PayPal and credit card integration. Shop-in-shop capability for corporate clients with budget management. Custom SEO-friendly URL provider with landing pages and redirects. Back-office for product management and sales analytics.
Headless real-time software controlling an automated package sorting facility with multiple routing switches. Processes image and barcode data from high-speed scanners with simultaneous asynchronous processing to meet strict reaction time requirements. Server-side barcode lookup and PLC-controlled routing decisions. Deployed and operated at facilities in Germany and Denmark.
Built on Proven Technologies
We work with battle-tested technologies chosen for reliability, security and long-term maintainability.
TypeScript
C# / .NET
ASP.NET / MVC
Docker / Kubernetes
Terraform / IaC
Azure / Serverless
MS SQL Server / Azure SQL
Oracle
SQLite / SQL-CE
JWT / TOTP / API Keys
Role & Tenant-Based ACL
Encryption & Secure Data Handling
Event-Driven Architecture
Domain-Driven Design (DDD)
CQRS / MVVM
TDD & Code Quality
Jenkins / CI/CD Pipelines
SonarQube / Code Quality Gates
AWS CloudWatch / Graylog
Xamarin / .NET MAUI
Windows, iOS & Android
Redis
MongoDB / MarkLogic
DynamoDB
How We Work
Flexible engagement models tailored to the challenge at hand.
Long-Term Architecture
Embedded architecture and engineering partnership for complex, ongoing platform development. Multi-year commitments with deep system ownership.
Stabilization & Recovery
Targeted intervention for delayed, failing or at-risk projects. Fast assessment, clear action plan, and hands-on delivery to get systems back on track.
Security Assessment
Comprehensive review of application security posture, authentication flows and API attack surface — with actionable remediation roadmap.
Industries We Serve
Deep domain experience across regulated, high-scale and mission-critical enterprise environments.
Automotive & Manufacturing
Custom business-critical software systems for industrial operations, including ERP integration and real-time tracking.
Healthcare & Public Sector
Data integration platforms for clinical systems with strict data protection and high availability.
Finance & E-Commerce
Transaction-heavy backends with payment processing, fraud prevention and real-time auditability.
Logistics & Supply Chain
ERP integration, warehouse management and distributed architectures connecting shop-floor to enterprise.
Enterprise Security Software
Security-critical applications for board-level communication in compliance-sensitive environments.
Regulatory & Compliance
Systems designed under strict security governance with audit trails, encryption and role-based access control.
From First Call to Delivery
A structured, transparent engagement process designed to create impact fast and sustain it long-term.
Discovery Call
We listen to your challenges, understand the landscape and determine if there's a fit. No commitment — just a focused conversation.
Technical Assessment
We review existing architecture, codebase and infrastructure to identify risks, bottlenecks and quick wins.
Architecture Proposal
A clear plan covering system design, security strategy, migration path and delivery milestones — aligned with your business goals.
Hands-On Delivery
We write production code, implement architecture decisions, conduct security reviews and ship — embedded in your team and processes.
Ongoing Ownership
Long-term architecture stewardship, security gate ownership and knowledge transfer — ensuring systems remain stable as they scale.
Ready to Strengthen Your Architecture?
Whether you need long-term architecture leadership, a security review, or help stabilizing a critical system — we're ready to engage.