C#.NET Software Development

We help companies who develop software using .NET Framework platform. What our clients like about us is that we work with literally any .NET technology, and have experience developing for multiply business domains.

We have over 1m of hours of experience in development using Microsoft .NET Framework technology. Our team creates clean optimised code, and the rates are competitive


  • C#.NET
  • C++
  • WPF
  • MVC
  • Azure
  • Mono
  • Postgre
  • SQLite
  • MongoDB
  • DevExpress
  • JavaScript
  • Bootstrap


  • Cloud storage management software
  • Data security and backup software
  • Applications for finance, banking, and insurance companies
  • Document management systems
  • CRM systems
  • Advertising campaign automation tools
  • Data analysis and Statistics software
  • Components for professional graphic design software
  • Professional software for medical institutions
  • Consumer electronics software
  • Internet of Things
  • Payment systems
  • Installers


We help companies to feel confident when releasing software to end users. What our clients like about us is our approach where we decrease cost of bugs for them by identifying issues on the early stages of software development process.

We set our focus on the following in-demand QA services:

  • Testing of software products and enterprise-level software systems
  • Testing of the software developed with us
  • Ruby automated scripts, Cucumber Framework

This is where we have the most recent expertise:

  • templates
  • ready-to-use scripts
  • knowledge of the most popular Frameworks


  • Installation testing
  • Functional testing
  • Compatibility testing
  • UI testing
  • Usability testing
  • Localisation testing
  • Load and Performance testing
  • Stress testing
  • System testing
  • Security and Penetration testing
  • Support for the A/B testing


  • Manual Testing
  • Automated Testing, scripts for Test Frameworks
  • Web Testing across multiple browsers, platforms, and environments
  • Mobile Testing on various mobile devices


  • Selenium
  • JMeter
  • Postman
  • SoapUI
  • Firebug
  • TestFlight
  • Continuos integration with TFS
  • TeamCity
  • GitHub
  • Amazon
  • VMWare
  • SQL Server

Project Infrastructure

  • Jira and Confluence
  • Wiki
  • TFS
  • RedMine
  • FogBugs
  • VersionOne
  • BaseCamp
  • Bugzilla
  • Microsoft Dynamics CRM
  • Trac

Dmytryy Andrushchenko

Head of QA Department

We worked with the software department of a Fortune 500 company on a development project. The main concern we faced was the quality of their releases. Plus, they wanted to keep current customers happy and gain new ones, instead of paying extra money for additional support and fixing low-quality code. In software, this means that any issues need to be solved and a fix delivered quickly. From the beginning we understood we needed a solid process. So we implemented several key processes/steps. For example, code reviews and continuous integration. We also set the focus to finding issues earlier rather than in later development stages. As a result, the project manager was really happy with the quality and timing of the releases. And also, customers who still had complaints/bugs could have them solved quickly because of the maintainability of the code.


  • 50+ Active Salesforce certifications
  • Experience in building highly loaded Salesforce Solutions
  • Salesforce Development Training Center
  • 9.58 point Client Satisfaction


  • Apex
  • Visulaforce
  • Lightning
Web Apps
  • HTML5
  • CSS3
  • AngularJs
  • REST
Salesforce Solutions
Highliy loaded Salesforce Solutions

Oleksandr Andrushchenko


As Official Consulting partner of Salesforce we ensure great user experience, enhance interactivity of Salesforce Applications, and provide a full set of Salesforce Implementation Services.


  • Custom Salesforce Solutions
  • AppExchange Products Development and Support
  • Lightning Components Development (UI)
  • External Data Services Systems Integration
  • Salesforce Mobile Development
  • Performance Tuning

Salesforce Administration and Configuration


  • Data Model and AppExchange packages configuration management
  • Security model implementation
  • Building Automation Processes
  • Reports and Dashboards Design and Implementation
  • Maintaining Data Quality, designing data management processes
  • Managing Users, troubleshooting User Issues
  • Custom Applications Maintenance and Support
  • Providing User Training

Web and Mobile Application Development

We help our clients to build high-quality, responsive web and mobile applications that look and work great on every device. What our clients like about us is that we deliver the solution which attracts and keeps users.


  • Popular frameworks
  • Responsive, mobile-friendly web design
  • Popular CMS and e-commerce engines
  • Payment processors
  • Integration with third-party APIs
  • Integration with CRM software, marketing analyzers
  • API driven development
  • Secure code-based hosting configuration
  • Focus on performance and stability


  • Social communities
  • Real-estate
  • Finance
  • Healthcare
  • Education
  • Entertainment, kids
  • Marketing
  • E-commerce

Web Development

  • HTML5
  • CSS3
  • JavaScript
  • AngularJS
  • Node JS
  • PHP


  • iOS
  • Android
  • Xamarin
  • Cocoa Touch
  • Objective-C
  • Cocos2d
  • PhoneGap
  • Sencha Touch

What we do

  • Portals for general public and communities, portals for specific industry or area of interest, video portals
  • E-commerce platforms integrated with any 3rd-party payment system (PayPal, 2CheckOut, Amazon Payments, Authorize.Net, WorldNet TPS)
  • High-load social networks and social communities
  • WordPress based websites integrated with all popular social networks (Facebook, Twitter, LinkedIn, SlideShare, Google+, and others) by means of custom extensions and/or applications
  • Native and cross-platform mobile applications that work on iOS and Android
  • End-to-end solutions that include standalone cloud-based backend, web-based frontend and mobile applications
  • Smooth linking/integration of legacy software to iOS and Android applications
  • Combining our experience and existing third-party APIs for fast and cost-effective development

Get In Touch

Please leave your details and we will contact you to understand how we can be of assistance
skype: Team4Dev
phone: +1 (213) 220-30-52 (9am - 6pm PST)

111 Ocean blvd, city of Long Beach, Los Angeles county, CA

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