Senior .NET Developer with Fintech EXP!

Margo Group; Warszawa; Hybrid; PLN 180,000 - 240,000; Full time

Job summary

Margo Group in Łódź, Poland, is seeking a Senior .NET Developer to design, build and maintain critical backend applications for a secure, enterprise-scale financial environment.

This role offers technical autonomy, robust engineering practices, and a modern, stable workplace with a hybrid model requiring only two days per month in the office; the start date is 15 June 2026.

Qualifications

• Senior backend developer with strong .NET experience in backend systems.
• Proficient in C# and .NET architecture.
• Experience in enterprise-scale financial applications is a plus.

Responsibilities

• Design, develop and maintain critical backend applications.
• Contribute to architectural discussions and drive technical decisions.

Skills

.NET

C#

Backend development

Job description

Are you a seasoned software engineer looking to drive impactful backend solutions within a secure, large-scale enterprise environment? A leading international financial institution is seeking a Senior .NET Developer to join a highly specialized engineering team. In this role, you will play a pivotal part in designing, developing, and maintaining critical applications that support sophisticated financial operations. This is an exceptional opportunity for a senior professional who thrives on technical autonomy, values robust engineering practices, and is looking for a stable yet modern environment where their architectural input truly matters.

Join the Team

This position is based out of our modern office space in Łódź, Poland, and offers an excellent work-life balance through a highly flexible hybrid work model requiring only 2 days per month in the office.

The targeted start date for this vacancy is 15 June 2026.

If you are a senior technical expert looking to elevate your career within an institution that values data discretion, engineering excellence, and structural stability, we want to hear from you.

Take the next step in your professional journey.