[RFO] Senior Backend Engineer (.net)

Senior Backend Engineer (.NET)

Software Mind develops solutions that make an impact for companies around the globe. Tech giants & unicorns, transformative projects, emerging technologies and limitless opportunities – these are a few words that describe an average day for us. Building cross-functional engineering teams that take ownership and crave more means we're always on the lookout for talented people who bring passion and creativity to every project. Our culture embraces openness, acts with respect, shows grit & guts and combines employment with enjoyment.

Job Description

Project – the aim you'll have:

Join a Polish–UK engineering team building a modern certification platform for the NGO sector. The product helps verify and certify selected goods within global sustainability standards, supporting transparency and responsible production.

Our cross-functional team includes .NET developers, automation testers, a DevOps engineer and a Dataverse engineer. We're looking for a skilled .NET Developer who wants to take part in a meaningful project, contribute to a high-quality codebase and collaborate closely with an international team.

Position – how you'll contribute:

• Designing and building new features and solutions from the ground up
• Creating Proof of Concepts (PoCs), technical spikes, and validating ideas
• Replacing old systems with new architecture — not maintaining legacy code
• Performing code reviews and sharing best practices
• Participating in shaping product architecture and technical direction
• Collaborating with other senior/principal developers, testers, BAs, Product Owners, and Scrum Masters
• Supporting the team with your knowledge, experience, and technical leadership

Qualifications

Expectations – the experience you need:

• At least 4+ years of commercial experience in C# and .NET Core
• Experience with Azure DevOps tools and CI/CD processes
• Solid understanding of software design principles, patterns (e.g., SOLID, DDD), and clean code practices
• Experience creating tests (unit, integration, ideally also component or contract tests)
• Practical experience with databases (SQL, MongoDB, NHibernate, Entity Framework, Azure Storage)

Additional skills – the edge you have:

• Knowledge of front-end technologies: React, JavaScript, TypeScript, CSS, Git — although in the project you'll be working closely with a dedicated front-end developer
• Experience designing new systems or working on greenfield projects
• Familiarity with event-driven architecture and distributed systems
• Knowledge of cloud solutions, especially Azure
• Willingness to share knowledge, mentor other developers, and actively participate in technical discussions

Additional Information

Our offer – professional development, personal growth:

• Flexible employment and remote work
• International projects with leading global clients
• Non-corporate atmosphere
• Language classes
• Internal & external training
• Private healthcare and insurance
• Multisport card
• Well-being initiatives

Position at: Software Mind Poland