Senior .NET delivery

Senior .NET delivery for difficult existing systems, blocked backlogs and contained projects

I help UK product teams, agencies and established businesses fix, extend and modernise live C#, ASP.NET and SQL Server applications without turning every problem into a rewrite.

Typical work includes production defects, fragile workflows, SQL and data problems, APIs and integrations, contained features and temporary senior capacity.

Available for fixed-scope delivery, confidential agency overflow and longer senior contract allocations, depending on the requirement.

Where I can help

The focus is on Microsoft-stack systems that already matter to operations or revenue. For contained work, the aim is to define the smallest useful piece that can reduce risk or unblock delivery; longer requirements can be handled as an agreed contract or agency allocation.

Legacy .NET application rescue and support

Production defects, fragile workflows, ageing code and undocumented behaviour in live C#, ASP.NET and SQL Server applications. The aim is the smallest reliable intervention, not a rewrite for its own sake.

Explore application rescue and bug-fix work

C#, SQL Server and data problem-solving

Slow queries, brittle stored procedures, failed imports, malformed exports, reporting problems and recurring manual corrections. The work is scoped around the affected workflow, data and expected result.

Explore SQL and data-flow fixes

APIs, integrations and contained feature delivery

Defined backlog items, administration workflows, REST API changes and third-party integrations. For contained work, scope and acceptance criteria are agreed up front, with testing and handover matched to the change.

Explore contained feature delivery

Senior .NET capacity for teams and agencies

A defined workstream or longer allocation for a product team or agency that needs experienced C#/.NET delivery. Confidentiality, client boundaries and handover are agreed up front.

Send your capacity requirements

Common situations

Situations where I can help

The service is designed for operational blockages, delivery pressure and fragile parts of live systems that need experienced .NET ownership.

  • A long-standing production defect is blocking users or internal staff.
  • An import or export regularly needs manual correction.
  • A blocked backlog item or defined workstream cannot get priority from the core team.
  • An API integration needs repairing or extending.
  • A legacy workflow is slow, brittle or poorly validated.
  • SQL queries or data processes are creating operational friction.
  • A product team needs temporary senior .NET capacity while hiring or clearing delivery pressure.
  • An agency needs confidential overflow help on an agreed piece of work.

Existing systems

Legacy application support without forcing a rewrite

Older software does not automatically need replacing. Where an existing application still supports the business, targeted maintenance can reduce operational risk and remove the defects or bottlenecks causing the most friction. IncaStack works within the current architecture where practical, documents the boundary and identifies larger risks without turning every engagement into a re-platforming project.

For evidence of direct product and production ownership, see selected delivery work and Craig's background.

Not sure how far the change should go? Read the legacy application modernisation guide for a practical way to compare contained improvement, subsystem replacement and a full rewrite.

  • C# and ASP.NET production defects
  • SQL Server queries, stored procedures and data processes
  • Import, export and reporting failures
  • Legacy validation and workflow problems
  • Third-party and API integration changes
  • Contained features blocked by core-team capacity

Ways to engage

Match the engagement to the work

A known defect, integration or feature may suit contained fixed-scope delivery. If the cause or safest delivery boundary is unclear, the first step is to establish what needs investigating before a larger piece of work is agreed. Longer requirements can be handled as an agency or senior contract allocation.

Where this delivery model works best

The strongest engagements have a real operational or delivery problem, an accountable owner, enough access to investigate safely and a sensible boundary for the first piece of work.

Usually a good fit

  • Existing live C#, ASP.NET or SQL Server applications with defects, modernisation risk or blocked backlog work
  • Product teams that need a contained outcome or temporary senior .NET capacity
  • Agencies needing confidential overflow or a clearly defined client-delivery boundary
  • Longer contract assignments where responsibilities, access and working arrangements can be defined

Less likely to be a fit

  • Vague platform ideas requiring extensive unpaid discovery
  • Twenty-four-hour or open-ended support without agreed service levels and appropriate cover
  • Rewrite-first projects before lower-risk interventions have been assessed
  • Work with no practical route to the code, environments, data or an empowered decision-maker

Have a difficult .NET system, blocked backlog item or capacity gap?

Send the current situation, desired outcome and any important constraints. I will review the requirement directly and let you know what information is needed to take it further.