Senior.NET Developer with AWS and React

About the Position

We are looking for a Senior .NET Developer with AWS and React to join our team and contribute to the cloud transformation of a data-intensive analytical platform. In this role, you will collaborate with innovative and diverse professionals from around the world, designing scalable architectures and modernizing legacy components to ensure performance and reliability.

Responsibilities

• Contributing to the cloud transformation of a data-intensive analytical platform by designing scalable architectures and modernizing legacy components.
• Ensuring continuous technological evolution of the product by proposing and implementing modern frameworks and architectural improvements.
• Applying Service Oriented Architecture (SOA) concepts in software design and development.
• Providing timely and courteous support to platform users, ensuring issues are understood, analyzed, and resolved promptly.
• Collaborating closely with a team of software engineers, analysts, and quality engineers to design and build software solutions that meet business needs.
• Adhering to team design and coding procedures and standards.

Requirements

• Minimum 5 years of experience in software development with a strong focus on .NET technologies.
• Deep expertise in designing and implementing web services.
• Practical experience with AWS and cloud environments.
• Hands-on mastery of Redux and Context API in React applications.
• Strong understanding of software design principles and best practices.
• Advanced level of English.

Nice to Have

• Experience with C#.

We Offer

• Great Place to Work: Recognized annually since 2015.
• Stable Financial Standing: Growth from a startup to a leading IT services provider in Poland.
• Contracts with Major Global Brands: Ensuring continuous employment.
• Internal Training Center: Offering over 300 technical and soft skills training sessions annually.
• Learning Opportunities: Access to internal and external training.
• Open and Approachable Management: Regular CEO meetups and inspiration days.
• Profit Sharing: Sharing company profits with employees.
• Passion Sponsorship Program: Supporting personal hobbies and passions.
• Regular Integration Events and Travel: Over 700 events annually.
• Comfortable and Well-Equipped Offices: Located in major Polish cities.
• MySii App: Simplifying administrative tasks for employees.
• Health Insurance: Private health packages with access to over 5,000 specialists.

About the Company

Sii ensures that all hiring decisions are made solely on the basis of qualifications and competence. We are committed to equal and fair treatment of all, regardless of legally protected characteristics. At Sii, we promote a diverse and inclusive work environment, in full compliance with applicable anti-discrimination laws.