Senior Fullstack Developer .NET + React

Madiff; Warszawa; On-site; PLN 260,000 - 420,000; Full time

Benefits offered by this job

Healthcare

Job summary

Madiff is seeking a Senior Fullstack Developer to join a new banking project focused on a microfactoring platform. The role combines backend development in C#/.NET with frontend work in React within a Scrum team to deliver high-quality software.

You will contribute to solution architecture, performance optimisation and work with legacy systems where needed, collaborating with Developers, Testers, Analysts and Product Owner.

Qualifications

• Minimum 5 years commercial .NET development experience.
• Debugging and profiling.
• Performance analysis.

Responsibilities

• Develop software in C#/.NET.
• Develop frontend functionality in React.
• Analyse and develop existing code.
• Work with legacy applications where required.
• Participate in solution architecture.
• Design and develop new functionality.
• Debug and profile applications.
• Work with relational databases and T-SQL.
• Work with asynchronous communication patterns.
• Cooperate closely with Developers, Testers, Analysts and Product Owner.
• Maintain code quality and development standards.

Skills

C#/.NET

React

Debugging

Profiling

Performance analysis

Tools

T-SQL

Job description

We are looking for a Senior Fullstack Developer to join a new banking project focused on developing a microfactoring platform. The role combines backend development in C#/.NET with frontend development in React, working across microservices and existing applications while contributing to solution architecture, performance optimisation, and high-quality software delivery within a Scrum team.

Responsibilities

• Develop software in C#/.NET
• Develop frontend functionality in React
• Analyse and develop existing code
• Work with legacy applications where required
• Participate in solution architecture
• Design and develop new functionality
• Debug and profile applications
• Work with relational databases and TSQL
• Work with asynchronous communication patterns
• Cooperate closely with Developers, Testers, Analysts and Product Owner
• Maintain code quality and development standards

Requirements

• Minimum 5 years commercial .NET development experience
• Debugging and profiling
• Performance analysis

Nice to have

• Banking or financial services experience
• Automated testing
• Work in a multinational environment on international projects
• Comprehensive healthcare
• Long-term B2B contract with a stable project pipeline