Existing application bug-fix sprints
Fix a contained group of defects affecting forms, permissions, validation or day-to-day workflows, then hand over with clear notes and test evidence.
DetailsSenior .NET developer · Derbyshire · Remote across the UK
Senior .NET developer for difficult existing systems and contained delivery
I work directly with UK product teams, agencies and established businesses on C#, ASP.NET and SQL Server applications—fixing difficult problems, extending or modernising existing systems, delivering integrations and contained features, or adding senior capacity for a defined period.
Looking for a business website? Explore website projects.
Senior developer, direct delivery
UK-based and remote-friendly
Fixed-scope work or contract allocations
Production-focused testing and handover
Featured product
CertNudge: a live SaaS product built end to end
I designed, developed and launched CertNudge, a UK landlord-compliance platform built with ASP.NET Core, SQL Server and Azure. It provides direct evidence of product design, multi-tenant application development, integrations, scheduled workflows, document generation and live deployment.
- Multi-tenant account and organisation structure
- Automated certificate reminders and secure document storage
- PDF compliance-pack generation
- EPC and payment integrations
- Azure deployment and production support
CertNudge is live and used by paying customers. It demonstrates the same practical approach I bring to client delivery: understand the workflow, choose the right level of solution, implement and test it, then document and hand over the work clearly.
.NET delivery
Focused help for live systems
Import, export and data-flow fixes
Correct brittle mappings, unreliable exports and repetitive cleanup work so operational teams spend less time repairing data manually.
DetailsContained feature delivery for existing .NET apps
Deliver one agreed feature in the current codebase with explicit scope, acceptance criteria and a practical handover.
DetailsSenior .NET contract and agency overflow capacity
Add experienced C#, ASP.NET, SQL Server and Azure delivery to an existing team for an agreed period, or hand over a clearly bounded piece of work when internal capacity is tight.
Explore contract and overflow optionsBespoke software development for practical business needs
Bespoke software is useful when spreadsheets, disconnected tools or an unsuitable off-the-shelf platform are creating repeated work. IncaStack can design and build the smallest reliable system that fits the real workflow, from an internal web application to a customer portal or connected reporting tool.
Internal tools and workflow applications
Replace repeated manual steps with a focused, database-backed system.
Customer and staff portals
Provide secure access to information, documents, actions or status updates.
Connected business systems
Integrate APIs, data sources and existing platforms so information moves reliably.
How work starts
Clear enough to move quickly, structured enough to stay controlled
Start with a useful brief. Share the problem, current system, constraints and desired outcome. I will confirm whether the work is a good fit, identify dependencies and put a clear boundary around the delivery.
Then deliver against that boundary. The agreed work is implemented and tested against its acceptance criteria, followed by concise change notes, deployment support and any agreed follow-up.
The best fit
IncaStack works best where there is a real operational or commercial problem, a decision-maker who can define the outcome and a practical route to the systems or content involved.
Usually a good fit
- Existing live applications with contained defects or backlog work
- Teams needing senior .NET capacity for a defined period or backlog
- Businesses with a weak booking, quotation or enquiry journey
- Projects with clear ownership and realistic budgets
- Work where direct communication and accountable handover matter
Less likely to be a fit
- Undefined platforms requiring extensive discovery before a budget exists
- Undefined on-call support with no agreed scope, priorities or availability expectations
- Speculative work with no decision-maker
- Projects expecting unlimited revisions or permanent unpaid support
- Custom booking or payment software under a standard website budget
Have a .NET system, backlog item or contained project that needs to get finished?
Send the current situation, desired outcome and any important constraints. You will receive a direct response from Craig.