Senior Full-Stack Engineer - .NET/React

MWDN; Warszawa; On-site; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Flexible working hours

29 days PTO

Free English classes

HR support

Independent contractor legal support

Job summary

MWDN is a global IT outstaffing company delivering teams for clients across Israel, the USA, Great Britain, and Western Europe. We are seeking a Senior Full Stack Engineer to design, develop, and maintain scalable web apps with .NET and React, collaborating with Product, QA, UX/UI, and other engineering teams to deliver high-quality solutions.

You will focus on architectural design, code quality, API development, and system performance while following Agile practices and contributing to best

Qualifications

• 5+ years of experience in full-stack software development.
• Strong experience with .NET / C#.

Responsibilities

• Design, develop, and maintain scalable full-stack applications using .NET and React.
• Build high-quality, reusable, and maintainable code for both backend and frontend components.
• Develop and integrate RESTful APIs and backend services.
• Collaborate with Product, UX/UI, QA, and other development teams to deliver end-to-end solutions.
• Participate in system design, architecture discussions, and technical decision-making.
• Optimize application performance, scalability, and security.
• Troubleshoot, debug, and resolve technical issues across the full stack.
• Work with Docker, deployment pipelines, and monitoring tools to support reliable application delivery and operations.
• Conduct code reviews and mentor junior developers.
• Follow Agile development methodologies and software development best practices.

Skills

Full-stack development

.NET / C#

React

JavaScript/TypeScript

REST APIs

SQL databases

Git

CI/CD

OO design

Problem solving

Independent work

English

Tools

Docker

Git

CI/CD

Job description

MWDN is a global IT outstaffing company delivering teams for clients across Israel, the USA, Great Britain, and Western Europe. We are seeking a Senior Full Stack Engineer to design, develop, and maintain scalable web apps with .NET and React, collaborating with Product, QA, UX/UI, and other engineering teams to deliver high-quality solutions.

You will focus on architectural design, code quality, API development, and system performance while following Agile practices and contributing to best