Enterprise .NET Architecture & Legacy Modernization

Helping Companies Modernize Legacy Business Systems Safely

ERK Systems helps organizations analyze and modernize legacy .NET and SQL Server systems without disrupting operations.

  • Architecture audits for fragile or aging business-critical systems
  • Modernization strategy for legacy .NET, SQL Server, APIs, and integrations
  • Senior technical advisory for companies that need clarity before costly changes
  • 30+ years of software engineering, architecture, and project leadership experience
ERK Systems enterprise software solutions diagram
Core Services

Three Clear Services. No Confusion.

Enterprise buyers do not want a long list of mixed capabilities. They want to understand exactly what problem we solve.

Service 01

Legacy System Architecture Audit

A structured review of your current architecture to identify risks, hidden dependencies, database issues, and modernization constraints.

Starting from €500
  • System architecture review
  • Dependency and integration mapping
  • SQL Server and performance observations
  • Actionable recommendations
Request Consultation
Service 02

.NET Modernization Strategy

A practical roadmap for evolving legacy .NET and SQL Server systems without reckless rewrites or unnecessary business disruption.

Scope-based pricing
  • Modernization roadmap
  • Migration sequencing
  • Architecture redesign guidance
  • Technical decision support
Request Consultation
Service 03

Fractional CTO / Architecture Advisor

Senior technical guidance for organizations that need architecture leadership, modernization support, and experienced judgment without a full-time CTO hire.

Monthly retainer / scope-based
  • Architecture review and decision support
  • Guidance for teams and leadership
  • Vendor and solution evaluation
  • Strategic technical oversight
Request Consultation
Pricing note:
The Architecture Audit is the only service presented with a public starting price because it can be offered as a clearer fixed-scope engagement. Modernization Strategy and Fractional CTO / Architecture Advisor work are priced based on system complexity, business risk, and required involvement.
Other Services

Additional Enterprise Software Services

These are additional services aligned with our capabilities, in a more focused way.

Business Analysis & Technical Planning

  • Requirements analysis
  • System planning
  • Technical documentation
  • Project scoping and solution definition

Web Application Development

  • Enterprise web platforms
  • Business process applications
  • Admin and operations dashboards
  • Blazor and ASP.NET-based solutions

Mobile Application Development

  • Business mobile apps
  • Field operations applications
  • Cross-platform solutions with Xamarin / MAUI
  • Mobile extensions of enterprise systems

Desktop & Internal Business Applications

  • Internal operational tools
  • Desktop-based business systems
  • Legacy desktop modernization
  • Integration with databases and existing systems

API, Services & System Integration

  • Web APIs and service architecture
  • Third-party system integration
  • Data exchange services
  • Interconnection of business platforms

Project Management & Technical Coordination

  • Technical project management
  • Architecture coordination
  • Team guidance and delivery supervision
  • Communication between business and engineering
Ready-Made Solutions

Productized Software Solutions for Faster Client Delivery

Beyond consulting and architecture services, ERK Systems can tailor selected ready-made solutions for organizations that want a faster path to deployment, validation, and commercial use.

Why this works better for enterprise buyers

Decision-makers respond more strongly to business-ready offers than to raw code assets. For that reason, these are positioned as deployable solutions with a clear use case, operational value, and adaptation path.

Each solution can be customized, white-labeled, integrated with existing systems, and delivered as a client-specific engagement with support for architecture review, rollout planning, and future extensions.

ERK Systems ready-made solutions
Case-Style Solution 01

Remote Support & Device Control Platform

A custom remote assistance platform for Windows and Android environments, built around WebRTC-based connectivity with desktop host/client applications and an Android remote endpoint.

Business use case Enable support teams to access, assist, and troubleshoot distributed devices remotely without relying on generic third-party tooling.
  • Remote screen streaming and session control
  • Mouse, keyboard, clipboard, audio, and file transfer workflows
  • Android screen capture and accessibility-driven remote input
  • Own signaling, trust, STUN, and TURN server components

Best for: IT support providers, managed services, internal enterprise helpdesks, remote maintenance teams, and device support operations.

Request Demo
Case-Style Solution 02

Private Video Conferencing, Chat & Simulcast Platform

A self-hosted conferencing solution with multi-user participation, chat, role-based flows, invite and redirect logic, and a broader media stack for controlled private deployments.

Business use case Give organizations a branded and controlled conferencing environment when privacy, ownership, or deployment flexibility matter more than public SaaS convenience.
  • Conference channels with master, client, plus-client, and wall display modes
  • SignalR-based real-time coordination and chat-ready architecture
  • TURN credential service, gateway, redirector, and WebRTC-ready client apps
  • Suitable for private events, internal broadcasting, and branded video environments

Best for: conferences, education providers, corporate events, municipalities, associations, and organizations that want their own controlled communication platform.

Request Demo
Case-Style Solution 03

Zoom Recording Bulk Export Utility

A focused utility designed to download Zoom video assets in bulk based on the target user email, helping teams export and organize meeting recordings more efficiently.

Business use case Streamline internal archive, compliance, and content-management workflows for organizations that need to retrieve and organize large volumes of recorded meeting content.
  • Bulk-oriented workflow for Zoom video retrieval
  • Local export to a predefined download folder
  • Practical fit for archive, compliance, and content management processes
  • Can be positioned as an internal productivity tool or an operational utility

Best for: training teams, compliance workflows, media operations, back-office support, and organizations managing high volumes of Zoom recordings.

Request Demo

Need one of these adapted for your organization?

Request a demo or solution inquiry to discuss customization, white-label options, deployment model, integration needs, and commercial delivery scope.

Request Demo / Solution Inquiry
About

Robert Karydis — Founder, ERK Systems

Software architect with more than 30 years of experience in enterprise software engineering, system architecture, project management, and delivery of business-critical applications.

ERK Systems helps organizations analyze and modernize complex legacy .NET and SQL Server systems safely.

What ERK Systems Focuses On

  • Legacy .NET system analysis
  • SQL Server architecture review
  • Modernization strategy and migration planning
  • Senior technical advisory

Why Clients Work With Me

  • 30+ years of engineering and delivery experience
  • Strong understanding of long-lived enterprise systems
  • Focus on risk reduction and business continuity
  • Ability to bridge management concerns and technical reality
Expertise

Enterprise Experience That Supports Real Modernization Work

Our value is not “I know tools.” The value is “I understand how fragile systems evolve, fail, and can be modernized safely.”

Architecture & Analysis

  • Software architecture assessment
  • System boundary and dependency mapping
  • Modernization risk analysis
  • Technical documentation and planning

Engineering Depth

  • C#, .NET, ASP.NET MVC, Blazor
  • SQL Server design and performance review
  • Web services, APIs, distributed systems
  • Enterprise application design and evolution

Leadership & Delivery

  • Project management and technical planning
  • Guidance for development teams
  • Support for complex technical decisions
  • Business continuity during system change
Process

A Simple, Corporate Engagement Path

Because clients do not want vague promises. They want a clear process and a rational next step.

1

Initial Consultation

We discuss your system, business constraints, operational risks, and what is driving the need for change.

2

Architecture Assessment

I review the architecture, integrations, dependencies, and database concerns to understand where the real risk lives.

3

Recommended Path Forward

You receive a practical strategy for modernization, stabilization, or senior technical guidance based on your actual environment.

FAQ

What Companies Usually Want to Know

Do you recommend full rewrites?

Not automatically. In many enterprise environments, full rewrites are riskier than most organizations expect. The safer path is often to understand the system first and modernize it in controlled stages.

Can you help if our system is undocumented?

Yes. That is common. Many legacy systems contain undocumented dependencies, embedded database logic, and operational assumptions that need to be reconstructed before change begins.

Do you only advise, or can you also support our team?

Both. I can provide architecture advisory, modernization planning, and technical guidance for internal teams or external vendors.

Why choose ERK Systems instead of a large consulting firm?

Because many organizations need sharp, experienced technical judgment without the overhead, bureaucracy, and inflated cost of a large consultancy.

Need clarity on a legacy .NET or SQL Server system?

ERK Systems helps companies understand fragile systems, reduce technical risk, and define safe modernization paths.

Schedule Consultation
Contact

Start a Professional Conversation

If your organization is dealing with a legacy platform, architecture uncertainty, or a risky modernization decision, send a short note with the situation.

Contact Details

ERK Systems is based in Greece and positioned for serious B2B consulting engagements around enterprise software architecture and legacy modernization.

Location Athens, Greece
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