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Offer summary
(Summary generated by AI based on the full job description)
The project is a cloud-native full stack product with frontend focus. Work centers on React/Next.js, TypeScript (~70%) and Java (Spring Boot) (~30%). Responsibilities include designing performant, accessible UIs, building reusable UI components, state management, API integration, end-to-end feature delivery and testing (Vitest, Playwright, JUnit). Required skills: practical Next.js experience, data fetching patterns, API integration, observability and automated testing. Offered: hybrid setup, benefits (e.g. private medical care, Multisport, life insurance), equipment and development support.
from: 14 October 2026
to: 13 November 2026
28 000 - 34 000 złnet (+ VAT)/ mth.B2B contract (full-time)
Offer parameters
level:senior
working mode:hybrid
location:Kraków, Lesser Poland
Kraków, Lesser Poland
Requirements
Expected technologies
React.js
TypeScript
Next.js
Java
Spring Boot
Operating system
Windows
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.
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.
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 siteagile
Division of working time
- 70%React/Next.js TypeScript Frontend
- 30%Java (Spring Boot) Backend
This is how we work on a project
- Continuous Deployment
- Continuous Integration
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.
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
Benefits
- sharing the costs of sports activities
- private medical care
- sharing the costs of professional training & courses
- life insurance
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.
Fullstack Developer (Frontend-Focused)
28k–34k zł / mth. (B2B)
I apply to:
Mindbox Sp. z o.o.
Kraków, Lesser Poland
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