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Offer summary
(Summary generated by AI based on the full job description)
Project involves building a web application to replace POSEOR (Access 97) and migrating reports to the Central Warning Database. Required stack: .NET / .NET 10, Angular, MS SQL Server and REST APIs; optional: RabbitMQ, Azure Service Bus, Kafka. Responsibilities include designing and implementing backend, frontend, databases, integrations with external systems (EDR/SERWO2), security, CI/CD in Azure DevOps and working with Git/Git Flow. Contract 01.10.2026–31.12.2026, rate up to 130 PLN/h, remote work, occasional travel to Warsaw.
(Remote) FullStack Developer (.NET + Angular) 3 months
Company: SQUARE ONE RESOURCES sp. z o.o.
from: 24 September 2026
to: 24 October 2026
120 - 130 złnet (+ VAT)/ hr.B2B contract (full-time)
Salary details
basic salary
Offer parameters
level:senior
working mode:remote
location:Warszawa, Masovian
Warszawa, Masovian
Requirements
Expected technologies
.NET
Angular
TypeScript
JavaScript
HTML
CSS
Microsoft SQL Server
Git
Azure DevOps
RabbitMQ
Kafka
Optional technologies
Azure DevOps
RabbitMQ
Apache Flink
Our requirements
- at least 5 years of professional experience as a backend .NET and frontend Angular developer
- strong knowledge of .NET / .NET 10
- good knowledge of MS SQL Server and SQL
- practical experience in designing and consuming RESTful APIs
- solid knowledge of Angular, TypeScript and JavaScript
- good knowledge of HTML5 and CSS3
- experience in developing responsive layouts and understanding of UX/UI principles
- experience with Git and Git Flow and working with team-based repositories
- knowledge of CI/CD, particularly Azure DevOps
- experience with Jira
- ability to work effectively in a team and prepare technical documentation
Optional
- experience with RabbitMQ
- knowledge of Azure Service Bus
- experience with Apache Kafka
- experience integrating applications with external systems
- experience working on modernization or replacement of legacy applications
Your responsibilities
- designing and developing a modern web application using .NET and Angular
- developing backend services, business logic and REST APIs
- designing and developing relational databases using MS SQL Server
- integrating the application with external systems and services
- implementing application security mechanisms
- preparing and configuring development and test environments
- analyzing existing POSEOR reports and translating them into the new solution
- developing new reports based on data from the Central Warning Database
- developing responsive and user-friendly interfaces
- performing internal functional and integration testing
- supporting business acceptance and testing activities
- preparing technical and project documentation
- working with Git and Git Flow
- supporting CI/CD processes using Azure DevOps
- collaborating with developers, testers, business stakeholders and other project participants
About the project
Project focused on replacing the existing POSEOR application, currently based on Access 97, with a modern web-based solution.
Develop a new application and migrate existing reporting functionality to data provided by the Central Warning Database.
Serve as the target source for warning-related data, including ad-hoc, permanent and one-timewarnings, provide full data archiving and integration with cooperating systems including EDR/SERWO2.
Analysis of existing POSEOR reports, definition of their equivalents in the new solution, preparation of requirements, and implementation of reports based on the new data source
What we offer
- occasional business trips to Warsaw, if required
- cooperation from 1 October 2026 to 31 December 2026
- working hours: 08:00–16:00 or 09:00–17:00 CET
- rate of up to PLN 130/hour
- online recruitment process via MS Teams
- an opportunity to work on a greenfield-style modernization project involving .NET, Angular, REST APIs and MS SQL
- the opportunity to contribute to the development of a new solution replacing a legacy application
Benefits
- remote work opportunities
- sharing the commuting costs
Recruitment stages
- 1.Interview via MS Teams
SQUARE ONE RESOURCES sp. z o.o.
At Square One Poland we link IT experts with the business. With over 25 years of experience, we specialize in recruitment processes on a global scale. Despite years of experience, we still have a startup DNA and this is our advantage. Our offices are located in London and Warsaw, however, we can reach clients from all over the world, from start-ups to big worldwide corporations.
This is how we work
(Remote) FullStack Developer (.NET + Angular) 3 months
120–130 zł / hr. (B2B)
I apply to:
SQUARE ONE RESOURCES sp. z o.o.
Warszawa, Masovian
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