Stabilising an old codebase
Fixing bugs, patching dependencies and keeping a working system reliable without introducing risk through unnecessary rewrites.
Microsoft and Dynamics 365
Hire a Microsoft .NET developer in Dubai
Keeping an older .NET Framework system running safely, and planning its move to modern, cross platform .NET, rather than adding features on a version past its support date.
- 4.7 Google rating
- 200+ clients
- In Dubai since 2018
45 minutesto a fixed written quote
A fair number of Dubai businesses that search to hire a Microsoft .NET developer in Dubai are not starting something new, they are looking after something old: a Windows desktop tool, an internal line of business system, or a website built years ago on the .NET Framework, still running and still doing its job, but increasingly surrounded by libraries, hosting options and security expectations built for a newer runtime. This page is written specifically for that situation, rather than for greenfield development.
The .NET Framework is the older, Windows only runtime, distinct from modern .NET, the cross platform line Microsoft now releases every year and actively develops. Framework still runs, and Microsoft has not announced its outright removal from Windows, but it gets no new capabilities, which leaves two honest options: maintain what exists carefully, or plan a deliberate move to modern .NET. A good developer for this role can do either, and should be able to tell you plainly which one your system actually needs.
What this role covers
Typical work for a Microsoft .NET developer
Two connected jobs, not one generic developer role.
Assessing migration readiness
Reviewing what the application actually depends on, including Windows specific APIs, before recommending a path forward.
Porting to modern .NET
Moving the application, or a component of it, onto the current .NET release, addressing breaking changes as they appear.
Replacing unsupported technology
Finding a modern equivalent for a .NET Framework only feature that has no direct match in current .NET.
Security patching
Keeping an older system’s dependencies current enough to close known vulnerabilities, even while it stays on Framework.
Cloud and container readiness
Preparing a migrated application to run in a container or on Azure, which .NET Framework applications generally cannot do natively.
Skills that matter
What to check before you hire a Microsoft .NET developer
Experience with old code, not just new frameworks.
These are the rows worth checking before you hire a Microsoft .NET developer in Dubai for legacy work specifically.
| Skill or tool | What good looks like | Why it matters |
|---|---|---|
| .NET Framework fluency | Genuinely comfortable reading and safely changing an older codebase, not just current .NET | Legacy code has different conventions, and unfamiliarity here causes accidental breakage |
| Migration assessment | Can identify Windows specific dependencies and third party libraries that will not simply carry across | An honest assessment upfront avoids a migration that stalls halfway through |
| Current .NET release awareness | Knows which release is long term support and which is nearing its end of support date | Building new work on a version about to lose support creates the same problem you are trying to fix |
| Testing an old system | Writes tests around existing behaviour before changing it, especially where none currently exist | Untested legacy code is easy to break in ways that are not immediately visible |
| Judgement about scope | Willing to say plainly that a full rewrite is not worth it for a given system | Not every legacy application needs to move, and a developer should say so when true |
Microsoft’s own guidance on upgrading .NET applications sets out several upgrade paths depending on what the existing application depends on, which is worth reading before agreeing a scope with any developer.
Ways to work with us
Bringing in a Microsoft .NET developer
A scoped project suits most of this work well: an assessment, a migration, or a defined stabilisation effort, delivered with documentation and handed over. A dedicated developer suits a system that needs ongoing maintenance over time rather than a single piece of work. Recruitment support suits a business that wants to hire a Microsoft .NET developer in Dubai directly, where we help write the role and run the technical assessment. Consulting fits a business unsure whether to maintain, migrate or replace a system, and wants an independent view before committing budget either way.
Which model, roughly
- Project: an assessment, migration or stabilisation, then handover
- Dedicated: ongoing maintenance of a system that keeps evolving
- Recruitment support: the developer joins your own payroll directly
- Consulting: an independent view before you commit to a direction
Assessing a candidate
How to assess a Microsoft .NET developer
Checks aimed specifically at legacy system judgement.
Use these checks directly, or ask us to run them as part of recruitment support when you hire a Microsoft .NET developer in Dubai through that route.
Ask for an example of a legacy system they maintained
What broke, what they changed, and how they avoided breaking something else in the process.
Walk through your own dependency list together
A candidate who can spot a Windows specific dependency or an abandoned library in your stack, live, is showing real experience rather than rehearsed answers.
Ask them to describe a migration path for a small sample
Given a short description of an old component, ask what they would check before recommending a rewrite versus a smaller fix.
Probe their view on rewrites
A candidate who always recommends a full rewrite regardless of the system is a warning sign as much as one who never does.
Check testing habits around legacy code
Ask specifically how they add safety around code with no existing tests before changing it.
Certifications
Certifications worth asking for
There is no current Microsoft certification specific to .NET Framework maintenance.
This is worth knowing before you hire a Microsoft .NET developer in Dubai and go looking for a credential that simply does not exist.
No dedicated Microsoft .NET certification
Microsoft’s certification catalogue does not currently offer a credential focused on .NET Framework maintenance or migration specifically, so treat this as a skill to verify through real examples rather than a badge to ask for.
What to look at instead
A working knowledge of Microsoft’s own migration documentation, and a portfolio of real legacy systems the developer has kept running or moved forward, tells you far more than any certificate would here.
UAE considerations
UAE points worth raising with a Microsoft .NET developer
Where legacy systems and UAE rules actually meet.
Raise both of these before you hire a Microsoft .NET developer in Dubai for a system that already touches real customer data.
Data protection on an older system
An old .NET Framework application that still holds customer or staff records is covered by Federal Decree Law No. 45 of 2021 exactly the same as a brand new one, and an outdated dependency is a common way that kind of system falls short of it.
A path toward Azure for a .NET developer
Since Microsoft operates Azure regions inside the UAE, a migration off .NET Framework is often also the point where a business can move a system into the country for the first time, rather than treating the two decisions separately.
However you choose to hire a Microsoft .NET developer in Dubai, this page sits in our Microsoft and Dynamics 365 category, part of the wider hire developers in Dubai section. Once a system is genuinely rebuilt on modern .NET, our ASP.NET developer page covers ongoing web development on the current framework, and our C# developer page covers the language itself outside .NET Framework specifically. If the destination is Azure, our Azure developer page picks up from there, and our general cloud services page is a reasonable starting point if the cloud decision is not yet settled.
Straight answers
Frequently asked questions
What is the difference between .NET Framework and modern .NET?
The .NET Framework is the older, Windows only runtime that shipped with Windows for years. Modern .NET, the current release line Microsoft now ships annually, is cross platform and actively developed, while .NET Framework receives no new features. A lot of business software in the UAE still runs on the older one.
Is our .NET Framework application at risk right now?
Framework itself is tied to the Windows version it ships with and is not being retired outright, but it receives no new capabilities and many libraries around it have moved on. The real risk is usually a dependency, a hosting platform or a security requirement that no longer fits, which a .NET developer can assess directly.
Do we need to rewrite everything to move to modern .NET?
Not necessarily. Microsoft's own guidance describes upgrade paths that range from a straightforward retarget to a fuller redesign, and the right path depends on what your specific application uses. A proper assessment before committing to a rewrite is worth the time.
Can a .NET developer keep maintaining our current system while we plan a move?
Yes, and that is a common, sensible starting point: stabilise and support what exists, while planning the migration separately rather than rushing both at once under pressure.
Should a new project start on .NET Framework or modern .NET?
Modern .NET, essentially always. Framework has not received new features for years and a new project has no reason to take on that limitation from day one.
What does a fixed quote for this work include?
Once we understand the application, its dependencies and your priorities, whether that is stability, a migration, or both, we scope the work in writing before anyone starts.
Sources
- Microsoft: .NET and .NET Core official support policy accessed 14 September 2026
- Microsoft Learn: Upgrade .NET apps overview accessed 14 September 2026
- Microsoft Learn: .NET Upgrade Assistant overview (deprecated) accessed 14 September 2026
Fixed price, in writing
Send your brief. Get a scope and a price within 45 minutes.
- One fixed number, agreed in writing before work starts
- No obligation, and no pressure to sign
- English and Arabic work, with proper right to left layout
- One team for design, marketing, web, media and copy
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