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In-house feel, nearshore

C# Developers

Senior C# engineers working British hours on the systems your business runs on. .NET has deep roots in UK enterprise, so most of what we staff is extending something established rather than starting from nothing.

  • Current .NET and the older Framework estates alike
  • Services, APIs and internal platforms
  • Working your hours, embedded in your team
Hire C# Developers
Software engineer working at a dual-monitor dev workspaceWeb ApplicationsWindows & Desktop AppsDatabase IntegrationTesting & DevOps

TRUSTED BY 300+ENGINEERING TEAMS

Virgin Experience Days
Salmon
Hotelplan
Willo
Travelex
Tidal
Scorpion
Vector
Virgin Experience Days
Salmon
Hotelplan
Willo
Travelex
Tidal
Scorpion
Vector
Ask our AI anything
Client onboarding call with a Cloud Employee engineer joining the team

Our service

C# engineers embedded in your UK team

We match engineers on what your codebase actually is rather than the newest version, because a migration from .NET Framework breaks on dependencies and Windows-specific pieces rather than on the language. Cloud Employee is the employer of record, so you get a committed employee rather than a contractor.

  • SQL Server and Entity Framework, tested on performance
  • Azure where your estate already sits
  • Automated tests and CI pipelines as standard

Automated tests and CI pipelines as standard

End to end .NET

  • Build and maintain secure, high-performing REST and gRPC services.
  • Web ApplicationsC# developers experienced with ASP.NET and modern UI frameworks.
  • Engineer reviewing code on screen
  • Windows & Desktop AppsLegacy or modern WPF/WinForms support for internal tools or systems.
  • Development team collaborating in the office
  • Database IntegrationDeep SQL Server knowledge - migrations, stored procedures & tuning.
  • Microservices & ArchitectureEvent-driven and modular design for scalable .NET systems.
  • Testing & DevOpsUnit tests, CI/CD pipelines, and Azure DevOps integration.

The alternative

Get speed, fit and in-house feel without the hiring grind.

Cloud EmployeeIn-house hiringDev agenciesFreelancers
Speed to hire-
Flexibility to scale-
Developer fit (embedded)-
Full-time, only for you--
No overhead or upfront fees--

Solid lime = yes · outline lime = partial · grey dash = no

Vetting

You see two people - not 200 CVs.

Engineers vet engineers

A senior engineer runs a live technical conversation on the candidate's real stack, not a recruiter working from a keyword list.

Live coding, not take-homes

Real problems solved in front of an assessor, with anti-cheating checks. You see how they actually work, not what they submitted overnight.

A full profile, not a CV

Every candidate arrives with a CV, interview summary, coding-test breakdown and rate in pounds. You decide on evidence.

Every tab is a stage a candidate has to clear. Six of them, all run by our own internal engineers at Cloud Employee, before you see a name.

  • Overview
  • CV
  • Tech interview
  • Coding test
  • Psychometric
  • Soft skills

Scored by people. We use AI to cross-check our own consistency - never to decide who reaches your shortlist.

Vetted senior c# engineer candidate profile

Luka M.

Vetted

Senior C# Engineer · C# · .NET · Azure · 6 yrs · Zagreb, Croatia (GMT+1)

£4,900/moAvailable in 2 weeks

Assessment

Six years in production Python, the last three on LLM systems - retrieval pipelines, eval suites, and agent tooling for UK fintech. Owns delivery end to end.

Coding test88%
Live interviewStrong
PsychometricTop 9%
Stack
Python · LangGraph
English
C1 fluent
Overlap
8 hrs UK
Notice
2 weeks

AI in practiceShips with Copilot and Claude Code daily, and rewrote 40% of the generated code in his observed task - the judgement is his, the tooling only makes him faster.

Career history

2023 - now

Senior AI Engineer

UK payments platform · 40-person product team

Built the retrieval assistant now resolving 30% of tier-1 tickets; owns its eval suite and guardrails.

2020 - 2023

Backend Engineer, Python

Travel booking SaaS · Zagreb

Moved fraud scoring onto a real-time feature pipeline; cut false declines by 18%.

2019 - 2020

Data Engineer

Agency · Python, Postgres, AWS

  • Python
  • FastAPI
  • LangGraph
  • pgvector
  • Evals & tracing
  • AWS
  • Docker

Technical interview

Assessed by Marco R., Principal Engineer

12 Jun 2026
55 min · live call

System design4 out of 5
Code quality5 out of 5
Debugging4 out of 5
Communication5 out of 5

"Walked me through an assistant that was quietly hallucinating refund policy, how he caught it in evals, and what he got wrong on the first fix. Hire-ready for a senior seat."

Live coding test

Repair a failing async pipeline

Python 3.12 · pytest · observed screen share

88
score

Tests passed
21 / 21
Time used
62 of 90 min
Anti-cheat flags
0

retrieval.py · submitted diff

- hits = index.query(q, k=50)+ hits = index.query(rewrite(q), k=50, filter=tenant)+ hits = rerank(hits, q)[:8]  # recall 0.62 -> 0.91+ assert_context_budget(hits, max_tokens=6000)

Psychometric · technical thinking

How he reasons under a real deadline - not a personality quiz.

Top 9%of engineers
we test

Abstract reasoning92
Problem decomposition88
Attention to detail90
Learning agility94
Risk awareness82
  • Systems thinker
  • Root cause over quick patch
  • Asks before assuming

A 45-minute reasoning test, scored against the 4,000+ engineers we have already placed. Our assessors do the marking - AI only flags where our own scoring looks inconsistent.

Soft skills · working with your team

Communication5 out of 5
Ownership5 out of 5
Collaboration4 out of 5
Takes feedback4 out of 5
Spoken English
C1 · assessed on call
References
2 of 2 verified

"He raised the payment edge case nobody else had spotted, in writing, two days before release."

Reference check · former tech lead, UK payments platform

This is what you receive - not a CV.

Ask our AI anything

Why Cloud Employee

Engineers who learn the estate and stay in it

Business systems reward continuity more than almost anything else we staff. 97% of our engineers stay beyond two years, supported by a 1,000 pound annual learning budget and dedicated Talent Success Managers, at 50 to 75% less than a comparable British hire.

  • Vetted on delivered systems rather than a CV
  • Working your hours and onboarded to your stack
  • Continuing support from our operations team
Long-tenure engineering team at work

More than developers

We handle onboarding, payroll and retention, with a UK-based account manager as your point of contact.

Fully supported

We handle the rest so your engineers can focus on building.

Engineer in a performance review sessionPerformance reviews
Team member handling payroll and compliancePayroll & compliance
Dual-monitor engineering workstation and equipmentEquipment
Engineering team in a modern office workspaceWorkspace
Molly and Daniel on a welcome-to-the-team onboarding call

In-house, without the friction

No upfront fees. No lock-in contracts.

  • No placement or upfront fees
  • Rolling 30-day contract, cancel anytime
  • One monthly rate, everything included

What role are you hiring for?

Pick one to start - you'll see matching engineers at the end.

  • 300+ teams built
  • 97% stay 2+ years
  • Replace if it isn't working

Got questions?

The questions CTOs and founders ask.

Can't find your question?

Ask our AI chatbot, trained on every sales call we've had.

Open chat

Typically 50 to 75% less than a comparable British hire once salary, employer national insurance, pension, recruitment fees and overheads are counted. We do place UK-based C# developers, and some clients want exactly that. Most end up with engineers in Eastern Europe, the Philippines or Latin America instead, because the quality is equal and the cost is not, and Eastern Europe suits a British team particularly well at roughly an hour from London. The intent is the best quality-to-cost ratio we can find, strong engineers at a sustainable price.

C# is Microsoft's flagship language for the .NET platform, a statically typed, garbage-collected language used for web services, desktop software, cloud workloads and games. Teams choose it for the combination of a mature ecosystem and a modern language; ASP.NET Core is genuinely cross-platform now, runs happily in Linux containers, and the tooling remains among the best anywhere. It suits organisations that value long-term maintainability, strong typing that catches mistakes at compile time, and first-class Azure integration.

Prioritise architectural judgement, async discipline and data-access literacy over encyclopaedic language knowledge, because AI assistants have made syntax recall the cheapest skill in the room. A strong C# developer today designs services around clear boundaries, understands dependency injection as a design principle rather than a ritual, and knows where Entity Framework Core will quietly generate a terrible query. Look for fluency with async and await beyond the happy path, deadlocks, cancellation and what actually happens under load. Modern language features matter less as trivia than as signals someone keeps current.

Put a realistic service design in front of them and listen for trade-offs, because .NET makes it easy to look competent while building something unmaintainable. Ask them to design an API with a background processing component, then push on failure, what happens when the queue backs up, when the database is slow, when a message arrives twice. Have them review a short piece of flawed code with an EF Core query problem and an async pitfall hidden in it; spotting both is a strong signal.

Yes on both counts, though the demand is steady and unglamorous rather than fashionable. C# underpins an enormous amount of business software, finance, logistics, healthcare and government among it, and those systems are maintained and extended for decades, which keeps the market durable through hype cycles. Building on it is worth it if you want a platform that will still be well supported, well documented and easy to hire for in ten years.

They do, and we would worry about a C# developer who did not, since assistants now handle scaffolding, test generation and boilerplate faster than any human. Soundness comes from what surrounds that speed. We assess during vetting whether a candidate uses AI tooling well, which in practice means watching whether they review generated code against the type system, write tests that would catch a hallucinated behaviour, and refuse to paste anything they cannot explain. .NET helps here; strong typing and compiler warnings make careless generation visible early.

A CTO-led process rather than a recruiter-driven one, which matters for C# because enterprise CVs can look identical while the engineers behind them differ enormously. Every candidate faces a technical assessment, live pair programming with a senior engineer on realistic .NET problems, a cultural fit screen and a psychometric assessment we built for software engineers specifically. Pairing is where the truth surfaces; you cannot fake fluency with async code or service design in a live session. We test how candidates use AI tools in their work, but people make every decision.

You are typically interviewing matched candidates within 7 working days of a requirements call, and developers are often embedded and pushing code within about two weeks. From there it is a rolling monthly contract with 30 days' notice, one monthly fee, and no placement charges. You can scale up or down as the work changes, and you pay nothing to interview.

There is a two-week money-back guarantee, and if you want to continue we replace the developer free of charge. In practice this rarely comes up, because you interview a shortlist of two candidates who have already passed a CTO-led technical assessment and a live pair programming session, so the fit question is largely settled before anyone starts.

Proof, not promises

Hear from our customers

In their words

What the difference feels like