Full Stack Engineer - Frontend

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

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?

What you get in return

• Flexible cooperation model
• Hybrid work setup – 2x/week 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

Daily tasks

• 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.

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.

Nice to have

• Developers with understanding of data or experience in data engineering (Spark, including event‑driven processing) are very welcome.
• Knowledge of modern frontend frameworks (Next.js) or advanced TypeScript practices.
• Experience in cloud‑native environments.
• Practice with infrastructure as code and deployment automation.

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.

Must have: React, TypeScript, Next.js, Java, Spring Boot, API, Automated testing

Nice to have: Data engineering, Spark, Cloud Native, Infrastructure as Code