.NET Modernization, Integration & Development

Application Modernization & Integrations

Modernize legacy .NET systems, integrate them with the platforms your business runs on, and build new capability where modernization isn't enough. Without the big-bang rewrite or the risk of losing what works.

Start a Conversation

Modernization isn't always a rewrite. Some applications can be migrated to Azure with minimal changes. Others need incremental refactoring, targeted rewrites, or integration work to connect them to the systems your business runs on. And sometimes the right answer is to build something new alongside what already exists.

I help organizations assess what they have, build the business case for what needs to change, define the roadmap, and lead the execution. This includes integrating existing systems with CRM, ERP, and data platforms, and building new applications when modernization or off-the-shelf options aren't the right fit.

My deepest development experience is in .NET on the Microsoft stack, and that's where the most direct fit lives. For modernization and development work on other stacks, I take the architecture and engagement-leadership role rather than writing the code.

When Your Platform Becomes the Thing Holding You Back

There's a particular kind of frustration that comes from knowing your application is the bottleneck. The software that built the business, the platform that got you your first customers and your first revenue, is now the thing slowing everything down. It's running on an older version of .NET Framework that's approaching or past end of life. Deploying changes takes too long and carries too much risk. The team has parts of the codebase they're afraid to touch because nobody fully understands them anymore. Every quarter, the gap between what the business needs and what the platform can deliver gets wider.

The pressure to modernize builds from multiple directions at once. Enterprise customers ask about your security posture, and the honest answers aren't reassuring. Integration with modern platforms, your CRM, your analytics tools, your partners' APIs, is brittle or requires manual workarounds. Your developers spend more time maintaining legacy code than building new capability. The technical debt isn't theoretical. It's visible in every sprint, every deployment, and every support ticket.

The temptation is to consider a complete rewrite. Start fresh, build it right this time. But full rewrites carry enormous risk. They take longer than projected, cost more than budgeted, and frequently fail outright because the scope grows beyond what anyone anticipated. The alternative, doing nothing, isn't sustainable either. The real answer is usually somewhere in between. An incremental modernization that prioritizes the highest-risk, highest-value areas first and migrates the platform piece by piece without freezing operations or betting the business on a single initiative.

Sometimes the right answer also includes building something new. A workflow that no off-the-shelf tool supports. An integration layer between systems that won't talk to each other. A new capability the legacy platform can't reasonably be extended to support. New development done right starts with architecture, not code. Clean structure, clear patterns, documentation that reflects the system as built, and a design your team can own and maintain after the engagement ends. The companies that have been burned by previous custom development efforts weren't failed by the decision to build. They were failed by the absence of architecture leadership.

What makes the difference between a modernization effort that succeeds and one that stalls is the same thing that makes new development succeed. Architecture leadership. Someone needs to assess what you have, determine the realistic path, whether that's migrating .NET Framework to modern .NET (currently .NET 10), re-platforming to Azure, refactoring critical modules, integrating with other systems, building something new, or some combination, and then guide the execution so the team isn't guessing. If your company has tried a modernization or development effort before and it failed, there's a good chance it wasn't the developers who fell short. It was the absence of a clear technical strategy and someone accountable for keeping the effort on track.

What's Included

Legacy .NET Assessment

Evaluate aging .NET Framework applications for migration paths, security risks, and modernization options, with a clear picture of what it will take to move forward.

Azure Migration

Design and lead the migration path to Azure for applications currently running on-premises or in co-located environments.

Incremental Refactoring

Plan and lead an incremental modernization that reduces technical debt without disrupting operations or requiring a freeze on new work.

New Application Development

Architect and lead the build of new applications when modernization isn't the right path. .NET on the Microsoft stack for hands-on builds. Architecture-led oversight for engagements on other stacks. For workflows that off-the-shelf tools don't fit, or for capability the legacy platform can't reasonably be extended to support. Designed for your team to own and maintain long-term.

Platform Integrations

Integrate your applications with CRM, ERP, and data platforms, including HubSpot, Salesforce, SAP, and custom APIs.

API Design & Development

Design and build APIs that expose your system's data and capabilities to other platforms and internal tools.

Roadmap & Business Case

Build the case for modernization or new development. Risk assessment, cost comparison, and a prioritized roadmap your organization can act on.

How Engagements Work

Modernization engagements typically run at Tier 3 during active migration or refactoring phases, then reduce to ongoing architecture advisory once the migration is complete.

Tier 3 - Transformation (multiple days/month): Active migration phases requiring close involvement in design decisions, team coordination, and implementation oversight.

Tier 2 - Core (2–3 days/month): Architecture ownership and design reviews while your team executes the migration incrementally.

Tier 1 - Advisory (~1 day/month): Ongoing architecture guidance and review after the core modernization work is complete.

Who This Is For

Companies running legacy .NET Framework applications that need to be moved to modern .NET or Azure

Organizations where the cost and risk of maintaining old systems is limiting product velocity

Businesses that need to integrate their core platform with external systems like Salesforce, HubSpot, or SAP

Companies that need purpose-built software where off-the-shelf tools don't fit how they operate

Teams that have been through a custom development effort that went wrong and need it built right the next time

Teams that have attempted modernization before but lacked the architecture leadership to succeed

Experience & Proof Points

Led full Azure migrations for production SaaS platforms. Zero unplanned downtime during transition.

25+ years of .NET and Microsoft platform experience, from architecture through implementation across financial services, healthcare, and SaaS.

Architected platforms for healthcare and financial services that have stayed in production for over a decade, meeting evolving compliance requirements throughout.

Ready to talk?

Tell me about your legacy systems and where you need to go. I'll let you know what a realistic path forward looks like.

Start a Conversation