Senior .NET software development & integrations (remote)

Start here: Paid Initial Review

The fastest way to get value: a short, paid review to understand the issue and agree next steps. Ideal for integration problems, older systems, reporting issues, or “we need a safe plan”.

Initial Review (paid)

• 90-minute call + brief written notes (1–2 pages) explaining what I found and what I recommend next
• Clear priorities: what to fix first vs. what can wait, with an estimate for the next piece of work
• Works well for: webhook issues, connecting to third-party systems, SQL performance, improving older applications

Next step: click Pay for the review — after payment you’ll be redirected to book a time.

Pay for the review  |  Already paid? Book a time  |  Questions?

Services

A) Full-stack .NET development

• New features and maintenance for ASP.NET / ASP.NET MVC and .NET Framework (some .NET Core)
• Improving older systems without disrupting day-to-day operations
• Support when something breaks, and clear fixes to prevent it happening again

B) Integrations & automation

• Connecting your system to other systems (REST APIs and SOAP/web services)
• Making webhooks reliable (so you don’t get duplicates, missing updates, or constant retries)
• Helping teams diagnose problems faster with better logging and simple monitoring

C) Data, SQL Server & reporting

• Speeding up SQL Server queries and fixing data issues
• Improving reports and exports, including older reporting setups
• Pragmatic improvements: indexes, query tuning, safe rollouts

D) Documents & Office-format outputs

• Generate Word/Excel/PDF outputs for packs, reports, and customer documents
• Template-based documents you can generate on demand
• Improve reliability and performance of existing document-generation pipelines

Ways to work

1) Piecemeal blocks (small, contained work)

• Bug fixes, small enhancements, integration tweaks, reporting adjustments
• Best when you already know what you want done

2) Fixed-scope sprint (best value)

• 1–2 weeks, defined deliverables, minimal disruption
• Ideal for fixing a problem end-to-end, modernising part of an older system, or rebuilding a report/process

3) Retainer (ongoing support)

• Monthly hours for support plus steady improvements
• Good for teams that need reliable senior help without hiring

FAQ

Do you work with confidential systems?

Yes. You can remove or mask sensitive details. I focus on what the system is doing, what’s going wrong, and the safest way to fix it.

How quickly can you start?

Often within 1–2 weeks for small items. If you’re dealing with a live issue, mention urgency in the email.

How does remote working happen?

Typically via Teams/Meet plus access to relevant logs/screenshots and, if needed, a test environment or a small example. I provide clear handover notes.

Book / contact

Book the paid Initial Review: Pay & book

Already paid? Book a time here

Email: hello@opensesameprojects.org

UK-based. Remote delivery.