Senior .NET Backend Developer (AWS)

Knowit is a leading Nordic IT consultancy firm, dedicated to helping our clients achieve their business goals through advanced technological solutions. With over 4,500 professionals across various business areas, we specialize in software development, IT consulting, and digital transformation, all aimed at creating sustainable futures. Knowit is listed on the Stockholm Stock Exchange and operates in 21 countries, providing cutting-edge solutions and exceptional client service.

For our customer, Danish manufacturer of branded toys, we’re looking for motivated and highly skilled .NET Developer, that is change ready and open to assist on a wide variety of tasks depending on team priorities. The position is remote with an opportunity to travel to the client's office in Denmark once in a while. We are looking for candidates living in Poland.

Core Responsibilities:

• Build efficient and reusable backend applications and services using .NET, with a strong focus on quality, security, and scalability.

• Work in an agile, cross-functional product team, collaborating across a full value-chain of software products.

• Promote good development practices, including clean code, documentation (e.g., decision records, technical designs), and clear definitions of done.

• Participate in code reviews and knowledge sharing with fellow engineers.

This is a great opportunity to join a recently formed team in a key area of the product development process. Our current tech stack is based on AWS, .NET, and JavaScript. While this is our foundation, we're always looking forward — and we welcome your input on new technologies and ideas that can take our solutions to the next level.

Do you have what it takes?

• Solid hands-on experience with .NET, building robust and maintainable backend services.

• Experience in developing and deploying cloud-native solutions on AWS.

• Good understanding of consuming APIs (REST).

• Comfortable working with modern frontend technologies (e.g., React, Next.js) is a plus.

• Strong written and verbal communication skills in English.

It’s also a plus if you have:

• Familiarity with Domain-Driven Design principles.

• Experience with infrastructure-as-code tools and CI/CD pipelines on AWS.

• An eye for system design and performance optimization.

• A growth mindset and a collaborative spirit — eager to learn and support your teammates.

What can we offer:

• B2B business contract.
• Possibility to work from the office (Warsaw, Łódź, Bydgoszcz), hybrid, or remotely - depending on your capabilities and preferences.
• Flexible working hours - you can start your day between 7 and 10.
• Organizational culture based on knowledge sharing and feedback.
• Opportunity to develop your skills - language training, technical training, soft skills, subsidies for certifications, participation in conferences on preferential terms.
• Possibility to acquire our benefits on preferential conditions.
• Necessary equipment for cooperation.