Senior .NET Full Stack Engineer (with Angular)

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

This is a great opportunity for an experienced Senior Full Stack Developer to join our Software Development team, being part AI oriented team. Our team includes technical leadership, development, architecture, quality, product and project management roles.

We are looking for a Senior Full Stack Developer comfortable with C# and Angular, with a proven history of building high-performance apps with a strong focus on system integrations and API-driven solutions.

Our clients are developing a modern B2B platform for the automotive industry, designed to digitalize and simplify complex business processes. The solution connects different stages of the automotive service and procurement journey, replacing fragmented and manual activities with more streamlined digital workflows. The project operates in the European market and is being designed with further growth and scalability in mind. This is AI First project with massive usage of AI DLC practices.

Key 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

Knowledge and Experience:

• 5+ years of experience of Microsoft development stack including; .NET C#, SQL Server T-SQL
• Important: .Net Core, SQL Server, HTML, CSS, JavaScript, Git, Angular, Azure, SOLID principles, Microservices architecture, Design principles, Jira
• Strong experience in API design and backend integrations
• Hands-on experience integrating with third-party systems
• Good understanding of authentication and authorization mechanisms (OAuth2, JWT, API keys)
• Experience with asynchronous or event-driven communication patterns
• Ideally, you will have experience working with Scrum methodology in a variety of contexts; different team sizes, organizational cultures, distributed development, etc.
• Up to 1 year of experience with AI

Personal Attributes:

• Self-organizing problem solver
• Able to think outside the box (open thinking)
• Strong ability to work effectively in a team. Collaborating, motivating and energizing others (Team player)
• Encourage and drive others to deliver high-quality, cutting-edge software
• You will have attention to detail and have a proactive ethos
• Always looking for continuous improvement
• Excellent verbal and written communication skills, in English

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