Senior .NET Lead Developer - Data Platform & Cloud

AFRY; Województwo małopolskie; Hybrid; PLN 363,000 - 518,000; Full time

Benefits offered by this job

Private medical insurance

Life assurance

Multisport card

Hybrid work model

Job summary

AFRY is seeking an experienced Senior .NET Software Developer to join the Energy Intelligence and Digital Solutions team. You will design, build, and evolve our data intelligence platform, taking ownership of technical solutions and guiding the development team.

Based in Oxford or another AFRY European office, this hybrid role combines hands-on coding with leadership, mentoring junior developers, and driving best practices across the SDLC to deliver scalable, secure software.

Qualifications

• Experience as a Senior Software Developer in enterprise or data-driven environments.
• Strong use of .NET, C#, ASP.NET Core and modern practices.
• Solid frontend experience with React.
• Proven track record leading technical initiatives and mentoring.
• Knowledge of software architecture, cloud-based apps, scalable design.
• Experience with MS SQL Server.
• Degree in CS/Engineering or equivalent.

Responsibilities

• Lead design, development, and implementation of scalable software solutions using .NET, C#, and modern web technologies.
• Have front-end experience using React.
• Support in the software architecture decisions and ensure solutions are maintainable, secure, and aligned with long-term business objectives.
• Establish and promote engineering best practices, coding standards, and development processes.
• Support the continuous improvement of development methodologies, tools, and ways of working.
• Contribute hands-on throughout the full software development lifecycle, from design and implementation to deployment and support.
• Identify opportunities to leverage new technologies and innovative approaches that improve delivery, quality, and business value.
• Support the development of the team, providing guidance, coaching, and support to other developers.

Skills

.NET

C#

ASP.NET Core

React

Leadership

Mentoring

SQL Server

Cloud

Architecture

Education

CS/Engineering degree

Tools

Azure

CI/CD

Git

Job description

AFRY is seeking an experienced Senior .NET Software Developer to join the Energy Intelligence and Digital Solutions team. You will design, build, and evolve our data intelligence platform, taking ownership of technical solutions and guiding the development team.

Based in Oxford or another AFRY European office, this hybrid role combines hands-on coding with leadership, mentoring junior developers, and driving best practices across the SDLC to deliver scalable, secure software.