FullStack .NET/ReactJs Developer

Net

Warsaw, Warszawa

ITDS

800 - 1 100PLN

Net per day - B2B

Full-time

B2B

Senior

Hybrid

Tech stack

Polish

C1

English

B2

.Net

advanced

C#

advanced

React

regular

Entity Framework

regular

JavaScript

regular

TypeScript

regular

SQL

regular

Microservices

regular

Swagger

nice to have

Job description

Warsaw based opportunity with hybrid work model (1 day in the office/week)

As a FullStack Developer you will be working for our client, a leading organization in the banking sector that is undergoing continuous digital transformation. You will support the development of modern online banking platforms by contributing to scalable, secure, and high-performance web applications. The project involves building new features and optimizing existing systems using the latest technologies in .NET and React. You will be part of a collaborative development team focused on clean code, innovation, and software quality.

Your main responsibilities:

• Develop web applications using .NET and React technologies

• Perform code reviews and suggest improvements

• Write unit tests to ensure software reliability

• Ensure high performance and security of the application

• Collaborate closely with developers, testers, and analysts

• Design and build scalable microservices

• Participate in improving the system’s architecture

• Document REST APIs using Swagger

• Optimize application performance

• Support the continuous improvement of development practices

You're ideal for this role if you have:

• Proficiency in object-oriented programming in C# and JavaScript/TypeScript

• Experience with React and related frontend technologies

• Solid understanding of RESTful Web Services and .NET

• Practical experience with Entity Framework

• Knowledge of microservices architecture and implementation

• Familiarity with GIT and version control workflows

• Ability to write clean, efficient, and testable code

• Understanding of SQL and database query optimization

• Experience with unit testing frameworks and practices

• Good grasp of distributed system concepts

• Apache Kafka from a developer’s perspective

We offer you:

ITDS Business Consultants is involved in many various, innovative and professional IT projects for international companies in the financial industry in Europe. We offer an environment for professional, ambitious, and driven people. The offer includes:

• Stable and long-term cooperation with very good conditions

• Enhance your skills and develop your expertise in the financial industry

• Work on the most strategic projects available in the market

• Define your career roadmap and develop yourself in the best and fastest possible way by delivering strategic projects for different clients of ITDS over several years

• Participate in Social Events, training, and work in an international environment

• Access to attractive Medical Package

• Access to Multisport Program

• Access to Pluralsight

• Flexible hours & remote work

Published: 09.08.2025

Office location