Senior .NET Developer — Cloud Analytics & AWS

Sii Poland; Województwo wielkopolskie; On-site; PLN 150,000 - 230,000; Full time

Benefits offered by this job

Great place to work

Profit sharing

Regular integration events and trips

Medical care

Centre of internal trainings

MySii app

Job summary

Sii Poland is seeking a Senior .NET Developer to join our team and drive cloud transformation of a data‑intensive analytics platform. You will design scalable architectures and modernize legacy components to ensure performance and reliability.

You will apply SOA concepts, develop web services, and work with AWS, Redux, and Context API in React applications. A strong command of English and 5+ years of software experience are required.

Qualifications

• Minimum 5 years of software development experience with a strong focus on .NET.
• Deep expertise in designing and implementing web services.
• Hands-on experience with AWS cloud environments.
• Strong knowledge of Redux and Context API in React

Responsibilities

• Contribute to cloud transformation of a data-intensive analytics platform by designing scalable architectures and modernizing legacy components.
• Ensure continuous technological evolution by proposing and implementing modern frameworks and architectural improvements.
• Apply SOA concepts in software design and development.
• Provide timely support to platform users, analyzing and resolving issues.
• Collaborate with software engineers, analysts, and quality engineers to meet business needs.
• Adhere to team design and coding procedures and standards.

Skills

.NET

Web services

Redux

Context API

English

C#

Tools

AWS

Job description

Sii Poland is seeking a Senior .NET Developer to join our team and drive cloud transformation of a data‑intensive analytics platform. You will design scalable architectures and modernize legacy components to ensure performance and reliability.

You will apply SOA concepts, develop web services, and work with AWS, Redux, and Context API in React applications. A strong command of English and 5+ years of software experience are required.