Senior .NET + React Full-Stack Engineer (Cloud & API)

Eleks; Poland; On-site; PLN 180,000 - 300,000; Full time

Job summary

ELEKS is a custom software development company delivering value to clients since 1991. We are rebuilding and modernizing digital tools, creating a scalable platform used across international markets as part of a broader modernization effort.

You will join a team focused on reusable components and simplified, intuitive modules within a unified ecosystem. We seek a senior software engineer with 7+ years of .NET Core and C# experience, strong API design, cloud exposure, and English proficiency.

Qualifications

• At least 7+ years of software development experience using .NET Core and C#.
• Experience designing, developing, and integrating REST APIs and working with third-party services.
• Solid knowledge of SQL and experience with data processing and database-driven apps.
• Hands-on experience with Microsoft Azure and cloud-based services.
• Familiarity with Git, CI/CD pipelines, and Azure DevOps.
• Experience with Playwright or similar tools for automated end-to-end testing.
• Ability to write clean, maintainable, and well-tested code.
• Good understanding of software development best practices and modern engineering principles.
• Excellent written and verbal communication skills, including the ability to present architectural decisions to stakeholders.
• Upper-Intermediate or higher level of English.

Responsibilities

• Design, develop, and maintain reliable software in line with technical requirements.
• Analyze requirements, and independently estimate and set up tasks’ acceptance criteria.
• Evaluate and coordinate tasks’ deadlines with the Technical Leader or Project Manager.
• Apply the best software development practices and coding standards to produce high-quality and performant solutions.
• Stay up-to-date with modern technology and optionally obtain professional certifications.
• Participate as a trainer or a trainee in various learning programs outside the main project.

Skills

NET Core

C#

REST APIs

Azure

SQL

Git

CI/CD

Playwright

Testing

English

Tools

Playwright

Azure DevOps

Git

CI/CD pipelines

Job description

ELEKS is a custom software development company delivering value to clients since 1991. We are rebuilding and modernizing digital tools, creating a scalable platform used across international markets as part of a broader modernization effort.

You will join a team focused on reusable components and simplified, intuitive modules within a unified ecosystem. We seek a senior software engineer with 7+ years of .NET Core and C# experience, strong API design, cloud exposure, and English proficiency.