Backend .NET Developer

Creatio; Polska; On-site; PLN 180,000 - 240,000; Full time

Job summary

Creatio, a global CRM and workflow platform provider, is seeking a Backend .NET Developer to join the Core Domain. You will contribute to the core business process platform, delivering scalable and customizable solutions that automate workflows and drive innovation.

You will work in a SCRUM team, write high-quality code in C#/.NET 8+, implement Web APIs, and collaborate with product managers. Proficiency in EF Core, SQL databases, Git, and testing is expected; English at upper-intermediate or

Qualifications

• Proficient in C# and .NET 8+.
• Strong knowledge of OOP principles (SOLID, DRY, KISS).
• Experience building Web APIs with EF Core.
• Experience with Git and CI workflows.
• Skilled in unit and API testing (NUnit, Postman).
• Experience with MS SQL Server or PostgreSQL.

Responsibilities

• Designing, coding, testing, and debugging software according to specifications and requirements.
• Transforming the system design into actual software by writing code and implementing features.
• Collaborating with stakeholders and product managers.
• Conducting unit tests, integration tests, and system tests.
• Participating in scrum team activities.

Skills

C# / .NET 8+

OOP Principles (SOLID, DRY, KISS)

ASP.NET MVC / Core

Entity Framework

Web APIs

Git / Version control

Unit testing (NUnit)

API testing (Postman)

Databases: MS SQL Server / PostgreSQL

English: Upper-Intermediate

Tools

Postman

NUnit

Mocking frameworks

Job description

Creatio is a global vendor ofan agentic CRM & workflow platform with no-code and AI at its core. We help organizations automate customer and operational workflows achieving the fastest time-to-value and the highest ROI on the market. Millions of workflows run on Creatio daily, supporting thousands of clients in over 100 countries. Genuine care for our clients and partners is at the heart of our DNA.

We’re proud to be recognized by top industry analysts as aLeader and Strong Performer in multiple Gartner and Forrester reports.

In 2025, Creatio was named to Inc.’s Best Workplaces list,recognizing our commitment to employee wellbeing and a strong workplace culture.

Who We’re Looking For:

We are seeking an innovative Backend .NET Developerto join our Core Domain for collaborating within Scrum teams. As a Software Developer at Creatio, you will contribute to the core business process platform, delivering scalable and customizable solutions that empower organizations to automate workflows and drive innovation.

Our teams are focused on the using best engineering practices. We provide the AI SDLC for all our engineering teams and have a wide range of AI practices in use.

Responsibilities:

• Designing, coding, testing, and debugging software according to specifications and requirements.
• Transforming the system design into actual software by writing code and implementing features.
• Collaborating with stakeholders and product managers.
• Conducting unit tests, integration tests, and system tests.
• Participating in scrum team activities.

Requirements:

• Confident in C# and .NET 8+.
• Strong knowledge of OOP and principles like KISS, SOLID, DRY.
• Hands-on experience with ASP.NET MVC/Core,Entity Framework and building Web APIs.
• Experience with Git, including branching, merging, and rebasing.
• Familiar with unit testing and mocking (NUnit, Mock). and API testing (Postman).
• Experience working with databases (MS SQL Server, PostgreSQL).
• Experience with AI technologies and solutions is a plus, but not required.
• English level — Upper-Intermediate (spoken and business writing) or higher.

What you should expect from us:

• Growth & Development: Clear career paths, mentorship opportunities, and access to continuous learning to help you reach your full potential.
• Flexibility & Well-Being: We provide flexible work arrangements and initiatives that empower you to manage your schedule effectively, stay productive, and thrive both personally and professionally.
• Recognition & Impact: A culture that celebrates achievements, values your ideas, and empowers you to make real contributions from day one.
• Innovative Culture: Be part of a company that embraces new ideas, modern technologies, and bold thinking to stay ahead of the curve.
• Benefits & Rewards Package: We provide competitive compensation and benefits designed to support you and your family. Our rewards approach goes beyond salary, recognizing your contributions and commitment. The exact package may vary depending on your country of residence and employment type.