Test us.

Angular, .NET, SQL, Java.
What are you looking for today?

Need a developer?



Hire our developers on a freelance basis with peace of mind. We provide a 15 Day Money Back Guarantee and a 100% transparent monthly bill.

...Or do you require a whole team?



Growth is at the core of your business. Scale your team as you wish - we have an abundance of expert developers ready to help you.
Mobile development

We provide customized solution in developing mobile compatibility sites as well as native mobile applications in the field of promotions, shopping, banking, news, services etc. in any desired platform like Android, IOS, Blackberry, etc.

Web development

As the pace of technology accelerates - we'll provide you with the necessary infrastructure & tools your business requires to scale.

DataBase Management & Administration

We offer our expertise from the configuration and design phase to optimizing and monitoring the performance of your database. Our goal is to guarantee the performance, integrity, and security of your database.

Mobile, Web, Data

Anything missing? Let us know

We are expert in:

Custom eCommerce
Custom software development (web and desktop)
Mobile development (iOS & Android)
Database development
UX / UI Design
Front End Development
Back End Development
AI/Machine Learning
Project Management
Quality Assurance

Programming languages:

.NET (C#, ASP .NET MVC, Web API, WPF)
SQL
PHP
Java
Javascript
Ruby
Python
Kotlin
Objective - C
SWIFT

IDEs:

Visual Studio
Studio Management
Net Beans
Xcode
Android Studio
Eclipse
IntelliJ IDEA

Platforms:

Windows
Linux
MacOS
Android
iOS
Other smart products

Frameworks, libraries, API tools:

.Net Core
Symfony
Entity Framework
Angular
VueJS
React JS
NodeJS

Testing approaches, frameworks​:

API, Manual, Automation testing, Mobile testing
Test case management
Unit testing
Regression testing, Localization testing, Black Box testing, Exploratory testing,
Usability testing (UX/UI), Functional testing, Stress testing, Performance testing,
Compatibility testing

Testing tools:

Selenium,
BrowserStack,
Postman,
Charles Proxy,
Kobiton, Appium,
Zephyr,
Tunnel Bear,
TestRail

Cloud:

Microsoft Azure
Amazon Web Services
Heroku

Databases:

MS SQL, ,
Oracle,
MySQL,
PostgreSql,
MongoDB,
Firebase,
DynamoDB,

Web Servers and containers:

IIS
Apache
Nginx

Integration, build, VC​:

TeamCity
Octopus
Jenkins
Docker
Git

Hire the right team today
with Principal

We're highly experienced on the German energy sector & mainly focus on data-lake & analytics related projects.

You'll hear back from us in the next 12 hours.

We speak your language

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We speak your language

Get a remote interpreter to attend the Daily, the Sprint Review or any other important meeting.

Start with 3 hours FREE
with any developer you hire.

FIND OUT MORE

Frequently asked questions

Once we learn what your developer needs are, we interview our pool of profiles and match you with the best suited option. Then, you review the developer's profile and accept or decline. If you accept, we start work right away. If you decline, we will find you another match until you are fully satisfied.
Yes. Even though our developers work mostly remotely, you can communicate your needs directly to the developer appointed to your project/s.
Dissatisfaction is not an option for us. If, for whatever reason you are not satisfied with our developer/s we will see to is that a better suited one is appointed to your project. Ultimately, we also offer a 10 day, full money back guarantee.
Yes, all our developers have at least a working proficiency level in the English language.
Absolutely. Our team is carefully screened for your security and we only work with trusted programs/ networks.