.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.

Shortlisting .NET Application Development Companies for Your Project?

Leverage ScienceSoft’s high-quality .NET development services based on:

  • 19 years in C# and .NET programming.
  • Microsoft partner status since 2008.
  • 220+ successful large-scale .NET projects launched.
  • 60+ .NET developers, full-scale PMO.
  • Certified Azure and AWS Solution Architects, Certified Azure Developers on board.

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.

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.

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 discuss the services you need within the chosen cooperation model in detail and reflect them in a Service Level Agreement.

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).

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

Our Selected .NET Projects

Software We Develop with .NET

Diverse types of software and software components

  • Web, mobile, and desktop apps
  • Embedded systems
  • Databases
  • APIs
  • Libraries

Diverse underlying technologies

  • IoT
  • Big data
  • AI and ML
  • Blockchain

Diverse purposes

  • Custom enterprise software for employees, vendors, partners, and clients
  • SaaS/XaaS
  • Software products

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

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

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).


Full .NET project outsourcing

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).


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

View all customer reviews

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.
View all customer reviews

Why Choose Our .NET Development Services

  • ~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

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.

All about our Software Development