Fullstack Developer (Frontend-Focused)

About the project

As a Full Stack Developer, you’ll work across the entire stack, focusing on React/Next.js TypeScript frontend (~70%) and Java (Spring Boot) backend (~30%).

You’ll design engaging, performant, and accessible interfaces, build seamless API connections, and ensure full product functionality aligned with modern engineering standards in a cloud native environment.

Sounds like your kind of challenge?

This is how we organize our work

This is how we work

• at the client's site
• agile

Your responsibilities

• Develop and maintain React/Next.js (TypeScript) frontends with focus on UX performance, accessibility, and code quality.
• Implement user facing features, reusable UI components, and state management logic, following best practices and design guidelines.
• Integrate frontends with Java (Spring Boot) services and APIs – support backend data flows when needed.
• Ensure end to end delivery of product features – from API integration to UI and interaction layer.
• Collaborate with UX designers, backend engineers, and data teams to refine features and deliver complete user journeys.
• Write clean, secure, and reusable code with solid testing coverage (JUnit, Vitest, Playwright).
• Contribute to performance, observability, and code reliability standards throughout the stack.
• Note: Detailed project information will be shared during the recruitment process.

Our requirements

• Proven experience with React + TypeScript and modern frontend architecture.
• Hands on understanding of Next.js, state management, and data fetching patterns.
• Familiarity with Java/Spring Boot backend development and API integration.
• Experience collaborating on cross functional product delivery.
• Understanding of observability and monitoring tools.
• Exposure to automated testing practices across frontend and backend layers.
• Curiosity, collaboration, and a structured problem solving mindset.

Optional

• Developers with understanding of data or experience in data engineering (Spark, including event driven processing) are very welcome.
• Experience in cloud native environments.
• Practice with infrastructure as code and deployment automation.

Division of working time

What we offer

• Flexible cooperation model
• Hybrid work setup – 2 days per week in the office in Kraków
• 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

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.