Senior .NET Full-Stack Engineer – AI-Driven, Remote

N-iX; Kraków; Hybrid; PLN 150,000 - 210,000; Full time

Benefits offered by this job

Flexible remote/onsite format

Competitive compensation

Personal growth

Mentorship and tech talks

Education reimbursement

Team events

Centers of excellence access

Job summary

N-iX in Kraków is seeking a Senior Full Stack Developer to join our AI-oriented software team. You will work on high-performance apps with a focus on system integrations and API-driven solutions, using C#, Angular, .NET Core and Azure.

You’ll contribute across the full stack, implement scalable back-end services, design RESTful APIs, and collaborate in Scrum ceremonies to deliver quality software for European clients in an AI-first project.

Qualifications

• 5+ years of experience with Microsoft stack (.NET C#, SQL Server).
• Strong knowledge of .NET Core, HTML, CSS, JavaScript, Angular, Azure.
• Experience designing APIs and backend integrations.
• Experience integrating with third-party systems.
• Familiarity with OAuth2/JWT authentication.

Responsibilities

• Work on business requests and development improvements.
• Develop, test, document and maintain our application back end build scalable and reusable code.
• Provide realistic estimates for requests, fixes and new ideas.
• Create unit tests.
• Write clear and precise technical documentation.
• Manage realistic work deadlines.
• Participate in all the scrum ceremonies and be part of the team performance and continuous improvement.
• Design and maintain integrations between internal and external systems.
• Develop and evolve RESTful APIs used for system-to-system communication.
• Ensure reliability, performance, and data consistency across integrations.
• Own integration-related technical decisions, including security and data exchange approaches.

Skills

C#

Angular

SQL Server

REST APIs

Git

Azure

Microservices

OAuth2/JWT

Tools

Jira

Job description

N-iX in Kraków is seeking a Senior Full Stack Developer to join our AI-oriented software team. You will work on high-performance apps with a focus on system integrations and API-driven solutions, using C#, Angular, .NET Core and Azure.

You’ll contribute across the full stack, implement scalable back-end services, design RESTful APIs, and collaborate in Scrum ceremonies to deliver quality software for European clients in an AI-first project.