Fullstack Developer

Qodeca sp. z o.o. · Remote - Worldwide · contract · 2026-09-05

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Job description

Fullstack Developer - Qodeca sp. z o.o.

Strona firmowa

Polski

English

Fullstack Developer

Oferty pracy

Fullstack Developer

Build a modern web and mobile product for the fitness industry from scratch — from architecture and code to deployment in the App Store and Google Play.

At Qodeca, we create modern digital products for clients worldwide. We are looking for a Senior Fullstack Developer who is fluent in both. NET backend development and frontend/mobile applications based on React and React Native.

You will join an interdisciplinary team delivering a comprehensive product for a fitness industry client. You will have a real impact on technical solutions, code quality, and how thousands of users utilize the club's services on a daily basis.

The Project You Will Work On

We will design, build, test, and deploy a digital ecosystem for a fitness company, including:

- iOS and Android mobile application

- Web panel for employees

- Backend and integrations

- Complete deployment

Wymagania

What We Expect From You

- Experience: Minimum 3 years of commercial software development experience.

- Backend: Experience with C#,. NET Core /. NET 8+, ASP. NET Web API, Entity Framework Core, and SQL Server.

- Frontend & Mobile: Practical experience with React, React Native, TypeScript, JavaScript, HTML5, and CSS3.

- Quality & Best Practices: Knowledge of Clean Code, SOLID principles, and design patterns, supported by experience in unit and integration testing.

- AI & Productivity: Practical experience using AI-assisted development tools, such as Claude Code, GitHub Copilot, ChatGPT, or OpenAI API.

- Remote teamwork: Self-discipline, good work organization, and the ability to collaborate effectively in a remote team.

- Polish language: Fluent proficiency – mandatory.

- English language: Minimum B2 in speaking and writing.

Nice to Have

- Knowledge of Domain-Driven Design (DDD) and CQRS.

- Hands-on experience with microservices architecture and cloud-native solutions.

- Experience with Microsoft Azure services, such as App Services, Service Bus, Azure SQL, and Azure DevOps.

- Good understanding of Docker and containerization.

- Familiarity with Azure Cosmos 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 or maintaining applications in the App Store and Google Play.

Obowiązki

What You Will Do

- Develop the product end-to-end: Build and maintain backend, web, and mobile solutions.

- Build the backend in. NET: Develop secure and scalable services and REST APIs using C#,. NET 10+, ASP. NET Web API, Entity Framework Core, and SQL Server.

- Create frontend and mobile applications: Implement responsive and intuitive features using React, React Native, TypeScript, JavaScript, HTML5, and CSS3.

- Optimize data solutions: Develop business logic and improve SQL Server database structures using Entity Framework Core.

- Ensure code quality: Apply Clean Code, SOLID principles, and design patterns while writing reliable unit and integration tests.

- Leverage AI in daily work: Use tools such as GitHub Copilot, Claude Code, ChatGPT, or OpenAI API for code generation, refactoring, and workflow optimization.

- Collaborate with the team: Participate in technical discussions, code reviews, task estimation, and solution development within a distributed team.

- Create technical documentation: Document implemented solutions and collaborate with team members in both Polish and English.

Oferujemy

What We Offer

- Compensation: 14,000–19,000 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.

- Meaningful product: Work on a new digital ecosystem combining web, mobile, backend, and integrations.

- Experienced team: Collaborate with people who share their knowledge and care about quality.

- Modern technology stack: Work with. NET, React, React Native, Azure, cloud solutions, and AI tools.

- Real growth opportunities: 90% of leadership positions at Qodeca were filled through internal promotions.

- Autonomy and support: Take ownership of your work while receiving support from experienced team members.

Additional Benefits

- Lux Med private medical care.

- MultiSport card subsidy.

- Team integration events, birthday celebrations, and holiday gifts.

Want to grow your fullstack skills while building a product that combines. NET, web, mobile, cloud, and AI? Apply – let’s talk.

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Osoby kontaktowe

Małgorzata Galińska-Wąsik

HR Specialist

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