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.NET Development Services

Partner Up with .NET Professionals

With a track record of 220+ large-scale .NET projects, ScienceSoft is a one-stop shop to get secure and high-performing .NET apps that bring fast ROI.

.NET Application Development Services - ScienceSoft
.NET Application Development Services - ScienceSoft

.NET software development services cover the design, implementation, testing, evolution, integration, and modernization of applications using the .NET platform. A mature and impact-focused IT firm, ScienceSoft understands the unique needs of customers from 30+ industries and addresses them with tailored .NET-based solutions — fast and at 20–50% reduced cost.

Why Leverage .NET Platform

Free distribution and cross-platform development.

Modular apps for facilitated deployment & maintenance.

Cleaner code with more focused units due to OOP.

A robust set of security features, mechanisms and practices, including code access security, role-based access, cryptographic services, GuardRails.

Designed to be highly scalable, allowing apps to handle a large number of users and data without compromising performance or stability.

A versatile ecosystem: special tools for desktop, web, mobile apps, games, IoT and ML-based solutions, multiple extensions and frameworks for different business needs.

~35% of apps are running on the .NET Framework. Source: Statista

Shortlisting .NET Application Development Companies for Your Project?

Consider ScienceSoft's .NET development track record:

  • ~5-8

    years of .NET project management expertise held by each PM

  • 1.5-2x

    faster development due to high productivity and outstanding .NET proficiency

  • 20-50%

    project cost reduction with Agile, DevOps & component reuse

Custom .NET Development Services

.NET application development services are a way to complete a wide range of .NET (Dot NET) tasks and projects with professional quality, faster and at a lower cost.

Equipped with hands-on knowledge of 31 industries, our business analysts handle needs assessment and high-level scope definition of your .NET project, while dedicated PMs from our Project Management Office outline project requirements, tech stack, schedule, and more in the detailed project documentation.

Our comprehensive UX design process, which includes thorough research, in-depth story mapping, and rigorous usability testing of wireframes and prototypes, culminates in visually appealing and polished UI design that guarantees widespread adoption of your .NET software. 

We offer professional .NET Core, ADO.NET and ASP.NET development services to build secure, scalable, really fast and feature-rich web solutions. These solutions can range from simple websites to complex enterprise software.

We use Xamarin and .NET Core to build applications that can run on different mobile platforms. With the help of Xamarin, our team overcomes any obstacles of cross-platform development and tailors UIs to the original look-and-feel of iOS and Android.

We use .NET Core, Windows Forms, WPF and UWP to build beautiful, robust and reliable desktop apps that run on Windows, Linux, and macOS.

Our integration architects and developers can establish secure, reliable, and fast connections between your .NET applications and other internal/external software solutions. We can build custom integration points (including using Azure and AWS integration services) or use ready-to-use ESBs/iPaaS of different providers (Talend, Boomi, MuleSoft, Informatica).

ScienceSoft’s cloud consultants, .NET developers, and DevOps engineers can help you create a pragmatic cloud adoption strategy and execute fast, smooth, and reliable migrations of .NET applications to the cloud without unplanned disruptions and with maximum value to your business. We are cloud-agnostic and will find the best suitable option for you out of the main clouds: AWS, Azure, GCP, Rackspace, DigitalOcean.

ScienceSoft’s .NET experts proficiently handled large-scale modernization of 20-year-old apps (!). We thoroughly investigate legacy code and infrastructures, restore documentation, describe and implement meaningful, reasonable improvements. These improvements can include architecture and tech stack updates, performance and security enhancement, enabling web and mobile access, improving UI/UX, adding CI/CD, and more.

ScienceSoft’s 75+ QA experts rely on a robust quality management system backed by ISO 9001 and perform functional, performance, usability, security, exploratory, and other types of testing. With our proprietary Integrated Manual and Automated Testing (IMAAT) approach, we help you reduce testing costs in your .NET project while ensuring its high test coverage.

We provide L1, L2, and L3 support for your .NET apps as well as comprehensive maintenance services that include performance optimization, compliance management, and security monitoring. We also ensure the continuous evolution of your .NET software, which may include adding AI, AR/VR, IoT, blockchain, and other advanced modules.

How To Outsource .NET Development to ScienceSoft

1. Request analysis (1 week)

We discuss your .NET development needs with you and define a cooperation model (team augmentation, dedicated team or full outsourcing).

Tip: Make sure to discuss the integrations your future software needs for our .NET integration architects to draft an integration plan. If required, our developers and DevOps experts will continue with delivering all planned integrations.

2. (Optional) Screening & interviews (2-5 days)

For a team augmentation model, we provide you with developers’ CVs and arrange interviews with the candidates you shortlist.

3. SLA preparation (2 weeks)

We set up communication between our developers and you and deliver the service scope steps that were defined in the SLA.

Tip: Feel free to list custom KPIs you want to monitor in your .NET project so that we can add them to our KPI set. We give you access to our log tools and send you regular progress reports to ensure full transparency of cooperation.

4. Cooperation launch (1-2 days)

We set up communication between our developers and you and deliver the service scope steps that were defined in the SLA.

*Tip: As costs and time of fully outsourced development depend on the scope of a .NET project, we recommend opting for an MVP to achieve minimized budget and fast time to market (2-3 months).

The Financial Times Includes ScienceSoft USA Corporation in the List of the Americas’ Fastest-Growing Companies 2023

For the second year in a row, ScienceSoft USA Corporation ranks among 500 American companies with the highest revenue growth. This achievement is the result of our unfailing commitment to providing high-quality IT services and creating best-value solutions that meet and even exceed our clients’ expectations.

Choose Your Cooperation Model

ScienceSoft is a flexible ASP.NET development company that offers different cooperation models to perfectly meet your .NET project needs.

Team augmentation with .NET developers

Get over skill deficiency or bridge staff gaps in your project with the professional assistance of ScienceSoft’s .NET developer(s).

Pricing model: T&M by an hourly rate (rate depends on the work scope and a developer's seniority level).


Dedicated .NET team

Hire a team of skilled .NET developers managed by ScienceSoft’s PMO to deliver your .NET project on time and on budget.

Pricing model: T&M by an hourly rate or T&M with a cap (when cost mitigation is a higher priority than flexibility).


Entrust implementation, support, and evolution of your .NET project to ScienceSoft’s BAs, UX/UI designers, developers, PMs and QAs.

Pricing model*: Fixed price (for finite requirements) or T&M by an hourly rate (for long-term cooperation).


Our development process is described in details here: How we develop software at ScienceSoft

Software We Develop with .NET

Diverse types of software and software components

Diverse underlying technologies

Diverse purposes

Diverse business functions

  • Business & project management
  • Sourcing & stock management
  • Asset management
  • Sales, marketing & customer service
  • Corporate finance management
  • Business analytics
  • HR, talent & productivity management
  • Security & emergency

Our Selected .NET Projects

Their dedication and commitment to excellence are impressive.

We first contacted ScienceSoft because we needed senior-level expertise in .NET and DevOps, and we needed it quickly. We've been working with ScienceSoft for almost a year and it has been a great experience throughout. The team is very professional, well-organized, and is always on top of the finer details. We're impressed by their passion for solving problems and implementing improvements. This is exactly what a long-term, harmonious partnership should look like.

Custom .NET Solutions for 30+ Industries

Custom .NET development is suitable for any mid-sized or large business when an existing product or online service doesn’t properly address the specific needs of the organization. With a profound knowledge of business, technology, and market trends, we develop tailored software for 30+ industries. Click on the icons below to learn more about our .NET experience in a specific industry.

We build ERPs, MES, SCMs, production planning apps, OEE solutions, vendor and partner portals, product data and lifecycle management, inventory management, remote service software, and more.

We provide custom EHR/EMR, HIE apps, care coordination and telemedicine apps, medical image analysis software, lab management solutions, in vitro diagnostics software, and more.

We build banking apps, payment apps, money transfer apps, loan processing systems, insurance software, claim management systems, investment apps, mortgage and treasury systems, ATM security & network protection systems.

We create e-stores and marketplaces, online shopping carts, headless commerce (with ecommerce platform or CMS at the core), catalogs and showrooms, mCommerce apps, warehouse management and order management solutions, loyalty management apps.

We deliver fleet management, route planning & optimization, and shipping document management solutions.

We build VoIP, video messaging and web conferencing apps, IPTV apps, as well as network planning, optimization and virtualization apps, and telecoms operations management solutions.

Customers About ScienceSoft as a .NET Development Company

ScienceSoft offers resources of high caliber skilled in Microsoft Azure, .NET, mobile, and Quality Assurance. Over the past three years, Lixar was very pleased with the service provided by ScienceSoft development teams and executive management. For accelerated project timelines which require skilled resources, ScienceSoft is a .NET software development company that your team should consider.

ServicePulse, LLC commissioned ScienceSoft to help us develop an AI-based software product for a limited number of clients to calculate software development efficiency and customer satisfaction score. ScienceSoft’s team undertook the development of our product from scratch and showed deep expertise in the .NET environment and AWS and Azure services. They delivered software in time and with the required quality.

ScienceSoft’s developers used the microservices approach to ensure our Azure-based product’s scalability; selected and implemented techs that guaranteed high availability and fault-tolerance. The new software performs stably even under heavy load, which helps offer high-quality user experience. ScienceSoft proved to be a reliable .NET application development company.

Architecture Patterns We Design


  • Microservices
  • Multi-tenancy
  • Headless (Decoupled)
  • Serverless
  • DDD
  • CQRS


  • PWA
  • SPA
  • MVC
  • MVVM
  • Reactive
  • Micro-frontends

Our .NET Software Architecture Sample

Our .NET Software Architecture Sample


How We Ensure Code Quality

Coding best practices

  • Adherence to .NET coding guidelines.
  • Adherence to data security practices (ISO 27001).
  • Descriptive names for all variables and in-code comments.
  • Code documentation.
  • Code split into short and focused units.
  • Use of version control tools.
  • Ensured code portability.

Unit testing

  • Unit tests are created as part of a functional requirements specification.
  • Tests verify code behavior in response to the input of standard, boundary, and incorrect values.
  • Tests are rerun after each significant code change to guarantee proper performance.

Code review practices

  • Ad hoc review.
  • Peer review.
  • Code walkthrough.
  • Code inspection.

Code quality metrics

  • Maintainability Index (MI).
  • Cyclomatic Complexity (CC).
  • Depth of Inheritance.
  • Class Coupling.

See our code sample

.NET Software code example


Skills that Drive Our .NET Application Development Services

.NET development services typically rely on technologies such as C#, Visual Basic, ASP.NET, WPF, Xamarin, Entity Framework, and Visual Studio.

A more comprehensive tech stack is available here: Technologies

Frequently Asked Questions

Do you support 'you build it, you run it' model?

Yes, we offer dedicated .NET teams ready to take full technical ownership of the project and be responsible for everything from planning and development to infrastructure setup and management.

What is the difference between .NET Framework, .NET Core and .NET?

In 2002, Microsoft created .NET Framework as a development platform specifically for Windows applications. In 2014, Microsoft introduced .NET Core, a cross-platform version of .NET that could be used on Linux, macOS, and Windows. .NET Core was also open-source and designed with cloud computing in mind. The name .NET Core was retained for versions up to 3.1, but the subsequent version was named .NET 5.

Who manages the project?

We have a strong full-scale PMO with ample experience in complex, large-scale .NET projects. The majority of our projects are managed by our in-house project managers.

However, we can also provide a dedicated .NET development team to be fully or partially managed by you. We minimize management efforts on your side by ensuring high transparency of the development process and proactive risk management.

How can I keep track of the project progress?

We give you access to a secure project extranet so that everyone involved in the project can access the latest documentation and other key deliverables. Depending on the project, they may include a software prototype, a product backlog (a discrete list of features with screenshots and testing criteria, bug fixes and infrastructure changes to be delivered), a sprint schedule (a plan of what features, fixes and changes will be delivered in what sprint), and more.

Every week, we hold status meetings. Also, a dedicated project manager will always be ready to answer any questions.

How do you scope software development projects?

ScienceSoft's approach to project scoping is designed to minimize risk, align expectations, and deliver exactly what the client needs. We deeply analyze your processes and conduct detailed stakeholder interviews to elicit complete requirements. We openly discuss scope constraints to avoid unrealistic expectations and potential client frustration. We also prevent uncontrolled scope creep by meticulously documenting project scope and assessing the impact of any requested changes.

How do you estimate the costs of software development projects?

We always strive to give you the most accurate estimates possible. To achieve this, we consider the pooled experience of our experts with 7–20 years in IT, historical costs of similar projects we completed, industry-average costs, and more. When a thorough discovery isn't feasible, we employ early estimation techniques to provide a rough figure. This helps our clients understand the expected investments, even for projects with high levels of uncertainty. Check more about our estimation process.