English 
Português
To hire a .NET developer, first define whether your project needs someone specialized in modern .NET (versions 8, 9 or 10) or in legacy .NET Framework; then choose the hiring model (in-house employee, contractor, staff augmentation or outsourcing), assess candidates with a practical test followed by a code walkthrough, and calculate the total cost of the hire, not just the salary.
Hiring a .NET developer has become a strategic task for companies that rely on enterprise systems, integrations and web applications built on Microsoft’s platform. The challenge is familiar to any IT manager: according to Brasscom, Brazil’s technology market needed 665,403 professionals between 2019 and 2024, while only 464,569 graduated between 2018 and 2023.
In 2026, there is an added sense of urgency. Microsoft ends support for .NET 8 and .NET 9 on November 10, 2026; from that date on, these versions no longer receive security fixes. Companies running systems on these versions need professionals who can lead the migration to .NET 10.
In this guide, you will learn which .NET profile to hire, how much it costs, which hiring model best fits your situation, how to assess candidates technically and which red flags to watch for.
What a .NET developer does and why they are in such high demand
A .NET developer is a professional who builds, maintains and evolves applications on Microsoft’s .NET platform, mainly using the C# language, for the web, APIs, desktop systems, mobile apps and cloud solutions.
The platform sits at the core of many enterprise systems: ERPs, financial systems, e-commerce platforms, customer portals and application integrations. According to the Stack Overflow Developer Survey 2025, ASP.NET Core is used by 19.7% of developers; C#, in turn, is part of the work of 27.8% of respondents and 29.9% of professional developers.
This relevance, combined with the talent shortage, explains why good .NET professionals often receive several offers at once. Brasscom itself lists back-end developers (the area where .NET is strongest) among the most sought-after profiles in the market.
Before hiring: define the .NET developer profile you need
The most common mistake when hiring a .NET developer is treating the platform as a single thing. Before opening the position, answer three questions: which .NET version your system uses, how much autonomy the professional needs and which area they will work in.
Modern .NET or .NET Framework: not the same professional
In practice, the .NET ecosystem is split into two markets. On one side, modern .NET (formerly .NET Core, now in versions 8, 9 and 10), which is cross-platform and cloud-oriented. On the other, .NET Framework (version 4.x), used in enterprise systems built between the mid-2000s and 2016, which run only on Windows. According to JetBrains research compiled by FOSS Post, 35% of .NET developers still use .NET Framework regularly.
| Criterion | Modern .NET (8, 9, 10) | .NET Framework (4.x) |
|---|---|---|
| Typical technologies | ASP.NET Core, Entity Framework Core, Docker, Linux, Azure, microservices | Web Forms, WCF, ASP.NET MVC 5, Windows Server, IIS |
| When to hire | New products, APIs, cloud applications, migrations | Maintenance of legacy systems that will not be migrated yet |
| Risk of hiring the wrong profile | A professional without command of asynchronous programming, containers and dependency injection | A professional unfamiliar with legacy specifics who underestimates the maintenance effort |
Mind the deadline: .NET 8 and .NET 9 lose support on November 10, 2026, and Microsoft recommends migrating to .NET 10, an LTS release supported until November 2028. For a safe migration, the ideal profile is someone who knows both ends of the process. If your system is in this situation, the migration does not need to wait for a three-month hiring process: NextAge builds the migration team and can take over system maintenance after the upgrade.
Junior, mid-level or senior?
| Level | Autonomy | Typical tasks | When it makes sense |
|---|---|---|---|
| Junior | Low; needs close supervision | Specific fixes, simple screens and endpoints, tests | Teams that already have technical leadership and time for mentoring |
| Mid-level | Medium; solves known problems independently | Complete features, integrations, performance improvements | Continuous evolution of already structured systems |
| Senior | High; makes technical decisions with business impact | Architecture, migrations, code review, mentoring | Critical projects, legacy modernization, teams without a technical reference |
A practical rule: if your company has no internal technical leadership, your first .NET hire should not be a junior.
Most common specializations
Beyond seniority, it is worth defining the area of work: back end and APIs (the most in demand); full stack, with Blazor or with an Angular or React front end; desktop and mobile, with .NET MAUI; cloud, with a focus on Azure; and legacy system modernization.
Skills a good .NET developer should have
A good .NET developer combines technical command of the platform, engineering practices (testing, version control, automation) and critical use of artificial intelligence tools.
Essential technical skills:
- modern C#, including LINQ, pattern matching and asynchronous programming (async/await);
- ASP.NET Core for building Web APIs and web applications;
- Entity Framework Core and SQL (SQL Server is the most common in the ecosystem);
- dependency injection and architecture principles (Clean Architecture, DDD, SOLID);
- automated testing with xUnit or NUnit;
- Git and CI/CD pipelines (Azure DevOps or GitHub Actions);
- Docker and a working knowledge of Kubernetes;
- cloud experience, mainly Azure;
- application security: authentication, authorization and OWASP best practices.
Soft skills:
- clear communication with business areas;
- autonomy to propose solutions, not just execute tasks;
- willingness to review colleagues’ code and have their own code reviewed;
- care with documentation.
One point deserves special attention: the use of AI. According to the Stack Overflow Developer Survey 2025, 51% of professional developers use AI tools daily, yet 46% distrust the accuracy of these tools. In 2026, knowing how to use GitHub Copilot is the bare minimum; what sets a developer apart is the ability to review, test and fix what the AI generates.
How much it costs to hire a .NET developer in Brazil
The cost of hiring a .NET developer goes far beyond salary: it includes payroll taxes, benefits, time-to-fill, onboarding and the risk of a bad hire.
According to a HUNT IT survey published in February 2026, these are the ranges practiced in the Brazilian market (CLT refers to formal employment under Brazilian labor law; PJ refers to contractors billing through their own company):
| Profile | CLT (monthly salary) | PJ (monthly billing) |
|---|---|---|
| Junior .NET/C# developer | R$ 5,000 to R$ 7,000 | R$ 07,000 to R$ 10,000 |
| Mid-level .NET/C# developer | R$ 08,000 to R$ 12,000 | R$ 10,000 to R$ 15,000 |
| Senior .NET/C# developer | R$ 13,000 to R$ 18,000 | R$ 16,000 to R$ 24,000 |
| Tech lead | R$ 18,000 to R$ 28,000 | R$ 24,000 to R$ 38,000 |
The cost that does not show up in the salary
When comparing models, also consider:
- Payroll taxes and benefits: under CLT, the monthly cost to the company is significantly higher than the gross salary. [Insert NextAge example: a senior CLT developer earning R$ X costs the company about R$ Y per month.]
- Time-to-fill: a direct hire takes, on average, 45 to 90 days, including sourcing, interviews and the candidate’s notice period. During that time, the project stalls or overloads the current team.
- Onboarding: until the professional understands the system and the business, productivity is partial.
- A bad hire: restarting the process means repeating all the costs above.
- Management: someone has to monitor deliveries, quality and deadlines day to day.
In-house, contractor, freelancer or outsourcing: which hiring model to choose
The best model for hiring a .NET developer depends on three factors: whether the demand is ongoing or one-off, how much time you have to recruit and whether there is internal technical leadership to manage the professional.
| Criterion | In-house (CLT) | Contractor or freelancer (PJ) | Traditional staff augmentation (body shop) | NextAge’s Staff Augmentation |
|---|---|---|---|---|
| Time to start | 45 to 90 days | Variable | A few weeks | A few weeks |
| Who manages | Your company | Your company | Your company | A dedicated NextAge tech lead |
| Labor risk | Your responsibility | Exists if there is subordination | Low | Low |
| Flexibility to scale | Low | Medium | Medium, with rigid contracts | High, with a flexible contract |
| Guarantee if it does not work | New hiring process | New hiring process | Usually with penalties | 15 risk-free days; cancellation without penalty |
In-house hiring (CLT) is the best choice for the strategic, long-term core of your technology team, as long as you have time to recruit and the structure to retain the professional.
Contractors or freelancers (PJ) work for one-off, well-defined demands when there is already someone technical to oversee the work. In long relationships with subordination, however, this model may create labor risk under Brazilian law.
Traditional staff augmentation (body shop) addresses the talent shortage, but usually shifts all management of the professional to the client; in addition, contracts tend to be rigid and carry penalties even when results do not materialize.
NextAge’s Staff Augmentation is suited for companies that need qualified .NET professionals quickly, without running a hiring process and without taking on day-to-day technical management. NextAge created Outsourcing precisely for this scenario: vetted professionals, a tech lead dedicated to each project and 15 days to test the service risk-free (if delivery does not match what was promised, you can cancel without penalty).
A shortcut to decide: if the demand is ongoing and you have time for a two- to three-month process, hire in-house; if it is a project or a demand peak and you have an internal tech lead, go with a contractor or staff augmentation; if you are short on time or technical management, NextAge’s Staff Augmentation tends to be the safest path.
Step by step to hire a .NET developer
Hiring a .NET developer well requires a short, objective process led by someone able to assess the candidate technically. These are the nine recommended steps:
- Map the problem, not just the position. List the system involved, the .NET version, the expected deliverables and the deadline. This defines the profile more precisely than any list of requirements.
- Write a lean job description. Stick to about seven essential requirements, state the .NET version explicitly and disclose the salary range. US recruiting firm KORE1 reports a case in which cutting a job description from 19 to 7 requirements took the search from 11 weeks with no qualified candidates to 4 qualified candidates in 9 days.
- Choose the right channels. Beyond LinkedIn, search .NET communities, tech events, GitHub repositories, referrals from your own team and specialized partners.
- Run a short screening. In 15 minutes, one question handles much of the filtering: which .NET version do you work with today? The answer reveals whether the candidate is in the modern ecosystem or in legacy.
- Use an AI-compatible practical test. Since virtually every candidate uses tools like Copilot, the test should be short and followed by a conversation in which the professional explains and defends the decisions they made.
- Conduct technical and cultural interviews. Always have someone technical in the room; also assess communication, autonomy and fit with the company’s way of working.
- Check references. Ask what the professional delivered and whether their former manager would hire them again.
- Send the offer quickly. Good .NET professionals receive other offers; make yours within 48 hours of the last interview.
- Plan onboarding. Ensure access, a technical point of contact and a first deliverable within two weeks.
With NextAge’s Outsourcing 2.0, steps 3 to 7 are already taken care of: every professional is trained and validated on internal projects before being assigned to a client.
Interview questions for .NET developers
Good interview questions for .NET developers assess how the candidate reasons through real problems, not just whether they memorized concepts.
| Question | What a good answer shows |
|---|---|
| What is the difference between Singleton, Scoped and Transient lifetimes in dependency injection? | Command of ASP.NET Core fundamentals and care about state leaking between requests |
| In which situations can async/await cause deadlocks, and how do you avoid them? | Real experience with asynchronous programming |
| How would you solve an N+1 query problem in Entity Framework Core? | Concern for performance and knowledge of the ORM |
| What changes when migrating an application from .NET Framework 4.8 to .NET 10? | Modernization mindset, awareness of dependencies and risks |
| How do you secure a Web API? | Knowledge of authentication, authorization, validation and rate limiting |
| Tell me about a production incident you resolved. | Maturity, investigation method and ownership |
| How do you review AI-generated code before shipping it? | Critical use of tools like Copilot |
| How would you structure tests for a critical business rule? | Quality culture and automated testing |
| Monolith or microservices for this scenario? Why? | Ability to weigh trade-offs rather than follow trends |
| How would you explain a technical decision to someone on the business side? | Communication and awareness of impact |
Not technical? How to assess candidates anyway
Managers without a technical background can still run part of the assessment: ask the candidate to explain one of their projects in plain language, request examples with numbers (reduced response time, processed volume, failures prevented) and notice whether the answers are concrete or generic. For the technical assessment itself, it is best to involve a specialist. If no one on your team can do this analysis, NextAge offers a free assessment of your operation: you walk away with the right profile defined and an action plan.
Red flags in candidates and vendors
Spotting red flags early prevents months of rework and the costs of a bad hire.
In the candidate:
- cannot say which .NET version they work with;
- cannot explain their own code or their own technical test;
- has no experience with automated tests on any project;
- has a portfolio made only of tutorials;
- answers scenario questions with memorized definitions.
In the staff augmentation or outsourcing vendor:
- swaps the presented professional after the contract is signed;
- offers no replacement guarantee;
- charges cancellation penalties even without delivery;
- prevents direct contact between the client and the developer;
- leaves all technical management to the client.
How NextAge helps you hire .NET developers
NextAge helps companies hire .NET developers through Outsourcing 2.0, a proprietary IT team allocation methodology designed to solve the problems of traditional outsourcing.
In practice, the model addresses the main challenges covered in this guide:
- Against slow recruiting: vetted .NET professionals, assigned in [insert actual average time], without a 45- to 90-day hiring process.
- Against the risk of a bad hire: 15 days to test the service risk-free, with cancellation without penalty if delivery does not match what was promised.
- Against the lack of technical management: each project has a dedicated tech lead, so your team can focus on the business.
- Against contractual rigidity: a flexible contract to scale the team up or down as demand changes, with the option of building complete squads (developers, QAs, Scrum Masters, tech leads and UX/UI designers).
The difference from a body shop lies in accountability for results: in the traditional model, the client receives professionals and handles management alone; with Outsourcing 2.0, NextAge vets the professionals, monitors performance and shares responsibility for deliveries with the client. According to the company, the methodology enables teams to achieve up to 40% higher productivity at no additional cost.
Founded in 2007, NextAge has more than 19 years in the market, over 600 clients served and a presence in more than 10 countries, with clients such as Sicredi, XP, WEG, Scania and Benner.
Talk to an Outsourcing 2.0 specialist and find out how to have a .NET team delivering within the first few weeks.
Frequently asked questions about hiring a .NET developer
How much does it cost to hire a .NET developer?
A senior .NET developer in Brazil earns R$ 13,000 to R$ 18,000 under a CLT employment contract and bills R$ 16,000 to R$ 24,000 as a contractor (PJ), according to HUNT IT (February 2026). The total cost to the company is higher, since it includes payroll taxes, benefits, time-to-fill and onboarding.
How long does it take to hire a .NET developer?
A direct hire usually takes 45 to 90 days, including sourcing, interviews and the candidate’s notice period. In models such as Outsourcing 2.0, where professionals are already vetted, allocation happens within a few weeks.
Is it better to hire a .NET developer as an employee or as a contractor?
Formal employment (CLT) is best suited for strategic, long-term positions focused on retention. Contractors (PJ) work for one-off, well-defined demands. For companies that need speed without taking on labor risk or technical management, outsourcing is a third alternative.
How can I assess a .NET developer without a technical background?
Ask the candidate to explain their own projects in plain language, request results with numbers and check references. For the technical assessment, rely on an internal specialist or a partner such as NextAge, which vets professionals before allocation.
What is the difference between .NET Framework and .NET 10?
.NET Framework (version 4.x) is Microsoft’s original platform, which runs only on Windows and is mainly used in legacy systems. .NET 10 is the current version of modern .NET: cross-platform, cloud-oriented and supported until November 2028.
Do I need to migrate my system from .NET 8 to .NET 10?
Yes, if the system needs to keep receiving security updates. Microsoft ends support for .NET 8 and .NET 9 on November 10, 2026; after that, applications keep running, but new vulnerabilities will no longer be patched.
What is NextAge’s Staff Augmentation?
NextAge’s Staff Augmentation is an IT team allocation methodology created by NextAge that combines vetted professionals, a dedicated tech lead, a flexible contract and 15 risk-free days. Its goal is to solve the problems of traditional outsourcing, such as management being shifted to the client and rigid contracts.
Is it worth outsourcing .NET development?
It is worth it when the company needs speed, lacks technical leadership available to manage new professionals or faces demand that varies throughout the year. For the strategic, permanent core of the team, direct hiring is still recommended.
Conclusion
Hiring the right .NET developer starts with correctly defining the profile (modern or legacy, junior or senior), continues with choosing the hiring model that best fits your current situation and ends with a technical assessment that goes beyond the résumé. With support for .NET 8 and .NET 9 ending in November 2026, getting this choice wrong, or taking too long to make it, can be costly.
If your company needs qualified .NET professionals quickly and safely, discover NextAge’s Outsourcing 2.0 and talk to a specialist about your scenario.
