Senior Full Stack Engineer (.NET/React)

Nix

Poland; Ukraine (Poland, Ukraine) Remote permanent

Posted: February 27, 2026

Job Description

N-iX is a global software development company founded in 2002, connecting over 2,400+ tech professionals across 40+ countries. We deliver innovative technology solutions in cloud computing, data analytics, AI, embedded software,IoT, and more to global industry leaders and Fortune 500 companies. Join us to create technology that drives real change for businesses and people across the world.

Our client is a technology company specializing in Learning Management Systems (LMS), delivering scalable, cloud-based digital learning solutions for enterprise customers. Their platform supports training, compliance, and continuous learning initiatives across distributed organizations.

We are looking for a Senior Full Stack Engineer with strong expertise in .NET and modern front-end technologies to join the team and contribute to the evolution of this cloud-native platform.

Responsibilities:

• Design and develop scalable backend services using C# / .NET

• Build and maintain a message-based microservices architecture

• Develop and enhance React-based front-end applications

• Implement real-time functionality using SignalR

• Manage application state using Redux and RTK Query

• Contribute to cloud-native solutions deployed in Microsoft Azure

• Leverage generative and agentic AI tools (e.g., GitHub Copilot) to improve engineering efficiency

• Collaborate with cross-functional teams to deliver high-quality, scalable software

Requirements:

• 5+ years of experience with C# and modern .NET

• Proven experience working with message-based microservices architecture

• Solid hands-on experience with Microsoft Azure

• Strong production experience with React

• Practical experience with Redux and RTK Query

• Experience with SignalR

• Hands-on experience using generative AI tools for software development (e.g., GitHub Copilot)

• Strong understanding of clean architecture and distributed systems

We offer*:

• Flexible working format - remote, office-based or flexible

• A competitive salary and good compensation package

• Personalized career growth

• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)

• Active tech communities with regular knowledge sharing

• Education reimbursement

• Memorable anniversary presents

• Corporate events and team buildings

• Other location-specific benefits

*not applicable for freelancers

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