Fullstack Engineer (.NET / React)

Technologies we use

Expected

• .NET
• React.js
• C#
• Web API
• SQL
• Microsoft SQL Server
• T-SQL

Operating system

• Windows

About the project

We are looking for a highly skilled Fullstack Engineer to design, develop, and deliver scalable applications using .NET and React technologies. If you are passionate about great design, coding standards, and DevOps automation — this is your opportunity to join a high-performing technology team.

Sounds like your kind of challenge?

This is how we organize our work

This is how we work

• at the client's site
• agile
• scrum

Your responsibilities

• Implement solutions following established design patterns and engineering best practices.
• Analyze business and technical requirements and propose effective improvements.
• Lead UI/UX enhancements to improve usability and application stability.
• Engage in DevOps automation and drive improvements in CI/CD lifecycle.
• Manage changes according to service management lifecycle principles.
• Participate in software architecture design and contribute to prototype development.
• Deliver exceptional customer support by troubleshooting and resolving issues efficiently.
• Collaborate and communicate effectively with technical and business stakeholders.
• Note: Detailed project information will be shared during the recruitment process.

Our requirements

• 7+ years of professional experience in production application development within the .NET ecosystem.
• Strong C# and Web API development expertise; knowledge of secure and scalable backend services.
• Hands-on experience with React for building interactive and high-performance web interfaces.
• Strong database design and SQL skills, particularly with SQL Server (T-SQL, query optimization, performance tuning).
• Experience in DevOps, including continuous integration, deployment, and monitoring practices.
• Solid understanding of the Software Development Lifecycle (SDLC) – from requirements gathering to production deployment and maintenance.
• Analytical mindset and exceptional problem-solving skills, with a keen eye for code quality and performance.
• Fluent English (spoken and written) required; Polish language proficiency is an advantage.

What we offer

• Flexible cooperation model
• Hybrid work setup – 6 days per month in the office in Kraków - remote days available depending on the client’s arrangements
• Collaborative team culture – work alongside experienced professionals eager to share knowledge
• Continuous development – access to training platforms and growth opportunities
• Comprehensive benefits – including Interpolska Health Care, Multisport card, Warta Insurance, and more
• High quality equipment – laptop and essential software provided

This is how we work on a project

• Continuous Deployment
• Continuous Integration
• DevOps

Benefits

• sharing the costs of sports activities
• private medical care
• sharing the costs of professional training & courses
• life insurance

Joining this project you’ll become part of Mindbox – a tech-driven company where consulting, engineering, and talent meet to build meaningful digital solutions. We’ll back you up every step of the way, accelerate your development, and ensure your skills make a difference.

Mindbox Sp. z o.o.

At Mindbox, we connect top IT talents with technology projects for leading enterprises across Europe.

Our focus is on matching your skills with work that matters – projects that use modern tech stacks, solve real business challenges, and give you space to grow. By joining us, you’ll deliver technology solutions for well-known brands, supported by the Mindbox team that values knowledge-sharing and continuous development. We make sure you have the tools, flexibility, and guidance to do your best work – and to keep moving forward in your career.