Senior Fullstack Developer

Our requirements

• Experience: Minimum 5 years of commercial software development experience.
• Backend: Very strong knowledge of C#, .NET Core / .NET 8+, ASP.NET Web API, Entity Framework Core, and SQL Server.
• Frontend & Mobile: Hands-on experience with React, React Native, TypeScript, JavaScript, HTML5, and CSS3.
• Architecture: Practical experience with microservices and cloud-native solutions.
• Microsoft Azure: Experience with services such as App Services, Service Bus, Azure SQL, and Azure DevOps.
• Containerization: Good knowledge of Docker and container workflows.
• Quality & Best Practices: Solid understanding of Clean Code, SOLID principles, and design patterns, along with experience in unit and integration testing.
• AI & Productivity: Practical use of AI programming assistants, e.g., Claude Code, GitHub Copilot, ChatGPT, or OpenAI API.
• Autonomy: Strong sense of ownership, self-discipline, and the ability to work effectively in a remote team.
• Polish language: Fluent proficiency - mandatory requirement.
• English language: Minimum B2 in speaking and writing.

Optional

• Familiarity with Domain-Driven Design (DDD) and CQRS.
• Knowledge of Azure DB and advanced Cloud/DevOps patterns.
• Interest in integrating AI/ML into commercial applications.
• Experience in fitness, health & wellness, or other B2C solutions.
• Experience publishing and maintaining apps in the App Store and Google Play.

Your responsibilities

• Develop the product end-to-end: Design, build, and maintain backend, web, and mobile solutions.
• Build the backend in .NET: Develop services and REST APIs using C#, .NET 10+, ASP.NET Web API, and Entity Framework Core, working with SQL Server.
• Create frontend and mobile apps: Implement features in React, React Native, and TypeScript, ensuring a consistent user experience across web, iOS, and Android.
• Design cloud solutions: Work with microservices architecture, Azure, and Docker containerization.
• Develop integrations: Connect the system with ABC Fitness, Stripe, and communication/notification services.
• Ensure quality: Apply Clean Code, SOLID principles, and design patterns, while writing unit and integration tests.
• Co-shape the architecture: Participate in design discussions, code reviews, and technical decision-making.
• Leverage AI in daily work: Utilize tools like Claude Code, GitHub Copilot, ChatGPT, or the OpenAI API to boost productivity without sacrificing quality.
• Support deployments: Collaborate on infrastructure configuration, documentation, testing, and mobile app publishing.

About the project

This is how we organize our work

Want to build a product that combines .NET, web, mobile, cloud, and AI?

What we offer

• Compensation: 21,000–25,000 PLN net + VAT under a B2B contract.
• Paid time off: 26 fully paid days off per year.
• Remote work: 100% remote - a model we used long before it became the standard.
• Real impact: Co-shape the architecture, technical standards, and foundations of a brand-new product.
• Experienced team: Work in an interdisciplinary environment with people who share knowledge and care about quality.
• Modern stack: Projects combining .NET, React, React Native, Azure, cloud solutions, and AI tools.
• Real growth opportunities: 90% of leadership positions at Qodeca were filled via internal promotions.
• Autonomy: Trust, space for decision-making, and ownership of results.
• Lux Med private medical care.
• MultiSport card subsidy.
• Team integration events, birthday celebrations, and holiday gifts.

Development opportunities we offer

• external training
• industry-specific e-learning platforms
• intracompany training
• mentoring
• soft skills training
• substantive support from technological leaders
• technical knowledge exchange within the company

Benefits

• sharing the costs of sports activities
• private medical care
• sharing the costs of professional training & courses
• remote work opportunities
• flexible working time
• integration events

Recruitment stages

• 1.
  Screening Interview
• 2.
  Tech Interview

QODECA sp. z o.o.