Praca w miastach:Praca IT Warszawa•Praca IT Kraków•Praca IT Wrocław•Praca IT Szczecin•Praca IT Poznań•Praca IT Lublin•Praca IT Katowice•Praca IT Bydgoszcz•Praca IT Łódź•Praca IT Białystok•Praca IT Toruń•Praca IT Gdańsk
Stanowiska:Grafik komputerowy praca•Tester gier praca•Programista praca•Tester oprogramowania praca•Frontend Developer praca•Data scientist praca•Tester manualny praca•Tester praca•Analytics praca•Tester aplikacji praca•Programista java praca•Web developer praca
Technologie i narzędzia:Python praca•Cyberbezpieczeństwo praca•Java praca•Bazy danych praca•Cisco praca•C++ praca•Javascript praca•SQL praca•Business Intelligence praca•Delphi praca•Wordpress praca•Testowanie aplikacji praca•C# praca•PHP praca
Specjalizacje:Backend praca•Devops praca•Frontend praca•Full-stack praca•GameDev praca•Mobile praca•Embedded praca•Architecture praca•QA/Testing praca•Security praca•AI/ML praca•Big data science praca•Helpdesk praca•IT admin praca•Agile praca•Product Management praca•Project Management praca•UX/UI praca•Business analytics praca•SAP & ERP praca•System analytics praca•PO/PM praca•Scrum master praca•Analityka praca•Data analytics & BI praca
Offer summary
(Summary generated by AI based on the full job description)
The project involves designing and maintaining high-quality applications using C#, React, Next.js, and PostgreSQL. It focuses on creating scalable software solutions and collaboration in agile teams. Responsibilities include independently delivering tasks, participating in Agile processes, database optimization, and applying best software development practices.
from: 9 July 2026
to: 8 August 2026
150 - 170 złnet (+ VAT)/ hr.B2B contract
Salary details
basic salary
Offer parameters
level:senior
working mode:remote
location:Warszawa, Masovian
Warszawa, Masovian
Requirements
Expected technologies
C#
React.js
Next.js
PostgreSQL
Optional technologies
AWS
Microsoft Azure
Our requirements
- 7+ years of commercial experience in C# development
- Strong knowledge of modern software development practices
- Professional experience with React
- Experience with Next.js
- Experience working with PostgreSQL
- Ability to work independently as part of an agile team
- Strong problem-solving skills and attention to detail
- Good communication skills and a proactive approach
Optional
- Experience with cloud platforms (e.g., Azure, AWS, or similar)
- Experience working with distributed systems or scalable architectures
Your responsibilities
- Developing and maintaining high-quality applications using C#
- Designing and implementing scalable software solutions
- Collaborating with frontend developers, product owners, and other stakeholders
- Working with modern web technologies, including React and Next.js
- Designing and optimizing database solutions using PostgreSQL
- Taking ownership of assigned tasks and delivering solutions independently
- Participating in agile ceremonies and contributing to team improvements
- Applying best practices in software development, testing, and code quality
About the project
As a Senior C# Developer, you will be responsible for designing, developing, and maintaining high-quality software solutions.
You will work closely with an agile development team, taking ownership of technical challenges and contributing to the continuous improvement of development processes.
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
Senior C# Developer
150–170 zł / hr. (B2B)
I apply to:
SQUARE ONE RESOURCES sp. z o.o.
Warszawa, Masovian
Need more information?
- Make sure the body of the offer doesn’t already include what you’re looking for.
- Ask a question if you need more information you’re interested in.
- We’ll forward your question to the employer and aim to provide a response within 3 business days.